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<span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div 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class="mw-page-title-main">Arresting gear</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. 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dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Cable used to rapidly decelerate an aircraft as it lands</div> <p class="mw-empty-elt"> </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:US_Navy_020312-N-7265D-005_F-14.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d2/US_Navy_020312-N-7265D-005_F-14.jpg/290px-US_Navy_020312-N-7265D-005_F-14.jpg" decoding="async" width="290" height="207" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d2/US_Navy_020312-N-7265D-005_F-14.jpg/435px-US_Navy_020312-N-7265D-005_F-14.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d2/US_Navy_020312-N-7265D-005_F-14.jpg/580px-US_Navy_020312-N-7265D-005_F-14.jpg 2x" data-file-width="2100" data-file-height="1500" /></a><figcaption>An <a href="/wiki/F-14_Tomcat" class="mw-redirect" title="F-14 Tomcat">F-14 Tomcat</a> descends to make an arresting gear landing on the flight deck of <a href="/wiki/USS_Theodore_Roosevelt_(CVN-71)" title="USS Theodore Roosevelt (CVN-71)">USS <i>Theodore Roosevelt</i> (CVN-71)</a> in 2002</figcaption></figure> <p>An <b>arresting gear</b>, or <b>arrestor gear</b>, is a mechanical system used to rapidly <a href="/wiki/Acceleration" title="Acceleration">decelerate</a> an aircraft as it <a href="/wiki/Landing" title="Landing">lands</a>. Arresting gear on <a href="/wiki/Aircraft_carrier" title="Aircraft carrier">aircraft carriers</a> is an essential component of <a href="/wiki/Naval_aviation" title="Naval aviation">naval aviation</a>, and it is most commonly used on <a href="/wiki/CATOBAR" title="CATOBAR">CATOBAR</a> and <a href="/wiki/STOBAR" title="STOBAR">STOBAR</a> aircraft carriers. Similar systems are also found at land-based airfields for expeditionary or emergency use. Typical systems consist of several steel wire ropes laid across the aircraft landing area, designed to be caught by an aircraft's <a href="/wiki/Tailhook" title="Tailhook">tailhook</a>. During a normal arrestment, the tailhook engages the wire and the aircraft's <a href="/wiki/Kinetic_energy" title="Kinetic energy">kinetic energy</a> is transferred to hydraulic damping systems attached below the carrier deck. There are other related systems that use nets to catch aircraft wings or <a href="/wiki/Landing_gear" title="Landing gear">landing gear</a>. These <i>barricade</i> and <i>barrier</i> systems are only used for emergency arrestments for aircraft without operable tailhooks. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arresting_gear&action=edit&section=1" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:HMS_Furious-19.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3d/HMS_Furious-19.jpg/220px-HMS_Furious-19.jpg" decoding="async" width="220" height="164" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3d/HMS_Furious-19.jpg/330px-HMS_Furious-19.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3d/HMS_Furious-19.jpg/440px-HMS_Furious-19.jpg 2x" data-file-width="740" data-file-height="552" /></a><figcaption><a href="/wiki/Fairey_III" title="Fairey III">Fairey III-F</a> aircraft landing on board British aircraft carrier <a href="/wiki/HMS_Furious_(47)" title="HMS Furious (47)">HMS <i>Furious</i></a> circa early 1930s. Arresting gear wires are visible above the flight deck</figcaption></figure> <p>Arresting cable systems were invented by <a href="/wiki/Hugh_Armstrong_Robinson" class="mw-redirect" title="Hugh Armstrong Robinson">Hugh Robinson</a><sup class="noprint Inline-Template" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Manual_of_Style/Dates_and_numbers#Chronological_items" title="Wikipedia:Manual of Style/Dates and numbers"><span title="The time period mentioned near this tag is ambiguous. (April 2013)">when?</span></a></i>]</sup> and were used by <a href="/wiki/Eugene_Ely" class="mw-redirect" title="Eugene Ely">Eugene Ely</a> on his first landing on a ship—the <a href="/wiki/Armored_cruiser" title="Armored cruiser">armored cruiser</a> <a href="/wiki/USS_Pennsylvania_(ACR-4)" title="USS Pennsylvania (ACR-4)">USS <i>Pennsylvania</i></a>, on 18 January 1911. These early systems had cables run through pulleys and attached to dead weights, such as sandbags. More modern arresting cables were tested on <a href="/wiki/HMS_Courageous_(50)" title="HMS Courageous (50)">HMS <i>Courageous</i></a> in June 1931, designed by Commander <a href="/wiki/C._C._Mitchell" title="C. C. Mitchell">C. C. Mitchell</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>Modern <a href="/wiki/List_of_aircraft_carriers_of_the_United_States_Navy" title="List of aircraft carriers of the United States Navy">U.S. Navy aircraft carriers</a> have the Mark 7 Mod 3 arresting gear installed, which have the capability of recovering a 50,000-pound (23 t) aircraft at an engaging speed of 130 knots (240 km/h; 150 mph) in a distance of 344 feet (105 m) in two seconds.<sup id="cite_ref-A&S_2015_2-0" class="reference"><a href="#cite_note-A&S_2015-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 52">: 52 </span></sup> The system is designed to absorb theoretical maximum energy of 47.5 million foot-pounds (64.4 MJ) at maximum cable run-out. </p><p>Prior to the introduction of the <a href="/wiki/Angled_flight_deck" class="mw-redirect" title="Angled flight deck">angled flight deck</a>, two systems were used (in addition to deck cables) to keep landing aircraft from running into parked aircraft further forward on the flight deck: the barrier and the barricade. If the aircraft tailhook failed to catch a wire, its landing gear would be caught by a 3-to-4-foot-high (0.9 to 1.2 m) net known as the <i>barrier</i>. If the aircraft caught a wire upon touchdown, the barrier could be quickly lowered to allow aircraft to taxi over it. The final safety net was the <i>barricade</i>, a large, 15-foot-high (5 m) net that prevented landing aircraft from crashing into other aircraft parked on the bow. Barriers are no longer in use, although ground-based arresting gear are sometimes called "barriers". Barricades are still in use aboard carriers, but they are only rigged and used in emergencies. </p> <div class="mw-heading mw-heading2"><h2 id="Operation">Operation</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arresting_gear&action=edit&section=2" title="Edit section: Operation"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Aircraft_Carrier_3-wire.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/40/Aircraft_Carrier_3-wire.jpg/220px-Aircraft_Carrier_3-wire.jpg" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/40/Aircraft_Carrier_3-wire.jpg/330px-Aircraft_Carrier_3-wire.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/40/Aircraft_Carrier_3-wire.jpg/440px-Aircraft_Carrier_3-wire.jpg 2x" data-file-width="1259" data-file-height="839" /></a><figcaption>A cross-deck pendant milliseconds after an aircraft nose-wheel passes over it. The arched supports are <a href="/wiki/Leaf_spring" title="Leaf spring">leaf springs</a> that raise the pendant above the flight deck.</figcaption></figure> <p>A normal arrestment is accomplished when the arresting hook of an incoming aircraft engages one of the deck pendants.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> When a landing aircraft engages a deck pendant, the force of the forward motion of the landing aircraft is transferred to a purchase cable, which is routed via sheaves to the arresting engine, located in a machinery room below the flight deck or on either side of the runway. As the deck pendant and the purchase cable are pulled out by the aircraft being arrested, the <a href="/wiki/Kinetic_energy" title="Kinetic energy">kinetic energy</a> of the aircraft is transferred to mechanical energy of the cables, and the arresting engine transfers the mechanical energy of the cables to hydraulic energy. This classic system of hydraulic arrest is now being supplanted by one using electromagnetics where the energy absorption is controlled by a turbo-electric engine. The arresting engine brings about a smooth, controlled stop of the landing aircraft. At the completion of the arrestment, the aircraft arresting hook is disengaged from the deck pendant, which is then retracted to its normal position. </p> <div class="mw-heading mw-heading2"><h2 id="Sea-based_systems">Sea-based systems</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arresting_gear&action=edit&section=3" title="Edit section: Sea-based systems"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:VA-34_KA-6D_Intruder_tailhook_approaching_arresting_cable_on_USS_Dwight_D._Eisenhower_(CVN-69)_Fleet_Ex_1990_DN-ST-90-05264.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/eb/VA-34_KA-6D_Intruder_tailhook_approaching_arresting_cable_on_USS_Dwight_D._Eisenhower_%28CVN-69%29_Fleet_Ex_1990_DN-ST-90-05264.jpg/220px-VA-34_KA-6D_Intruder_tailhook_approaching_arresting_cable_on_USS_Dwight_D._Eisenhower_%28CVN-69%29_Fleet_Ex_1990_DN-ST-90-05264.jpg" decoding="async" width="220" height="149" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/eb/VA-34_KA-6D_Intruder_tailhook_approaching_arresting_cable_on_USS_Dwight_D._Eisenhower_%28CVN-69%29_Fleet_Ex_1990_DN-ST-90-05264.jpg/330px-VA-34_KA-6D_Intruder_tailhook_approaching_arresting_cable_on_USS_Dwight_D._Eisenhower_%28CVN-69%29_Fleet_Ex_1990_DN-ST-90-05264.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/eb/VA-34_KA-6D_Intruder_tailhook_approaching_arresting_cable_on_USS_Dwight_D._Eisenhower_%28CVN-69%29_Fleet_Ex_1990_DN-ST-90-05264.jpg/440px-VA-34_KA-6D_Intruder_tailhook_approaching_arresting_cable_on_USS_Dwight_D._Eisenhower_%28CVN-69%29_Fleet_Ex_1990_DN-ST-90-05264.jpg 2x" data-file-width="2810" data-file-height="1900" /></a><figcaption>A <a href="/wiki/Grumman" title="Grumman">Grumman</a> <a href="/wiki/A-6_Intruder" class="mw-redirect" title="A-6 Intruder">A-6 Intruder</a> about to catch the #3 wire.</figcaption></figure> <p>Modern carriers typically have three or four arresting cables laid across the landing area. All U.S. carriers in the <a href="/wiki/Nimitz-class_aircraft_carrier" title="Nimitz-class aircraft carrier"><i>Nimitz</i>-class</a>, along with <a href="/wiki/USS_Enterprise_(CVN-65)" title="USS Enterprise (CVN-65)"><i>Enterprise</i></a>, have four wires, with the exception of <a href="/wiki/USS_Ronald_Reagan" title="USS Ronald Reagan">USS <i>Ronald Reagan</i></a> and <a href="/wiki/USS_George_H.W._Bush" title="USS George H.W. Bush">USS <i>George H.W. Bush</i></a>, which have only three.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Gerald_R._Ford-class_aircraft_carrier" title="Gerald R. Ford-class aircraft carrier"><i>Gerald R. Ford</i>-class</a> carriers will also have three. Pilots aim for the second wire for the three-wire configuration or third wire for the four-wire configuration to reduce the risk of landing short. Aircraft coming in to land on a carrier are at approximately 85% of full throttle. At touchdown, the pilot advances the throttles to Military (MIL) power. In the <a href="/wiki/F/A-18E/F_Super_Hornet" class="mw-redirect" title="F/A-18E/F Super Hornet">F/A-18E/F Super Hornet</a> and <a href="/wiki/EA-18G_Growler" class="mw-redirect" title="EA-18G Growler">EA-18G Growler</a> aircraft, the aircraft automatically reduces engine thrust to 70% once the deceleration of a successful arrestment is detected. This feature can be overridden by the pilot by selecting max afterburner. If the aircraft fails to catch an arresting cable, a condition known as a "<a href="/wiki/Bolter_(aviation)" class="mw-redirect" title="Bolter (aviation)">bolter</a>", the aircraft has sufficient power to continue down the <a href="/wiki/Angled_flight_deck" class="mw-redirect" title="Angled flight deck">angled flight deck</a> and become airborne again. Once the arresting gear stops the aircraft, the pilot brings the throttles back to idle, raises the hook and taxies clear. </p><p>In addition to American CVNs (nuclear <a href="/wiki/Aircraft_carrier" title="Aircraft carrier">aircraft carriers</a>), the French <a href="/wiki/French_aircraft_carrier_Charles_de_Gaulle" title="French aircraft carrier Charles de Gaulle"><i>Charles de Gaulle</i></a>, the Russian <a href="/wiki/Russian_aircraft_carrier_Admiral_Kuznetsov" title="Russian aircraft carrier Admiral Kuznetsov"><i>Admiral Kuznetsov</i></a>, the Chinese <a href="/wiki/Chinese_aircraft_carrier_Liaoning" title="Chinese aircraft carrier Liaoning"><i>Liaoning</i></a>, <i><a href="/wiki/Chinese_aircraft_carrier_Shandong" title="Chinese aircraft carrier Shandong">Shandong</a></i> and <i><a href="/wiki/Chinese_aircraft_carrier_Fujian" title="Chinese aircraft carrier Fujian">Fujian</a></i> as well as the Indian <a href="/wiki/INS_Vikramaditya" title="INS Vikramaditya"><i>Vikramaditya</i></a> and <i><a href="/wiki/Vikrant-class_aircraft_carrier" title="Vikrant-class aircraft carrier">Vikrant</a></i> are active or future aircraft carriers installed with arresting gear. </p> <div style="clear:both;" class=""></div> <div class="mw-heading mw-heading2"><h2 id="Land-based_systems">Land-based systems</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arresting_gear&action=edit&section=4" title="Edit section: Land-based systems"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Marines_working_on_aircraft_arresting_gear.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/04/Marines_working_on_aircraft_arresting_gear.jpg/220px-Marines_working_on_aircraft_arresting_gear.jpg" decoding="async" width="220" height="313" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/04/Marines_working_on_aircraft_arresting_gear.jpg/330px-Marines_working_on_aircraft_arresting_gear.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/04/Marines_working_on_aircraft_arresting_gear.jpg/440px-Marines_working_on_aircraft_arresting_gear.jpg 2x" data-file-width="998" data-file-height="1421" /></a><figcaption><a href="/wiki/United_States_Marine_Corps" title="United States Marine Corps">U.S. Marines</a> work on an arresting engine for a land based arresting system. Note reel for nylon tape in background.</figcaption></figure> <p>Land-based military airfields operating <a href="/wiki/Fighter_aircraft" title="Fighter aircraft">fighter</a> or jet <a href="/wiki/Trainer_(aircraft)" class="mw-redirect" title="Trainer (aircraft)">trainer</a> aircraft also use arresting gear systems, although they are not required for all landings. Instead, they are used for landing aircraft on short or temporary runways, or for emergencies involving brake failure, steering problems or other situations in which using the full length of the runway is not possible or safe. There are three basic types of land based systems: permanent, expeditionary, and overrun gear. </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:F-16_field_arrestment.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/68/F-16_field_arrestment.jpg/220px-F-16_field_arrestment.jpg" decoding="async" width="220" height="146" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/68/F-16_field_arrestment.jpg/330px-F-16_field_arrestment.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/68/F-16_field_arrestment.jpg/440px-F-16_field_arrestment.jpg 2x" data-file-width="3000" data-file-height="1993" /></a><figcaption>An <a href="/wiki/General_Dynamics_F-16_Fighting_Falcon" title="General Dynamics F-16 Fighting Falcon">F-16</a> makes a field arrestment.</figcaption></figure> <p>Permanent systems are installed on nearly all U.S. military airfields operating fighter or jet trainer aircraft. Expeditionary systems are similar to permanent systems and are used for landing aircraft on short or temporary runways. Expeditionary systems are designed to be installed or uninstalled in only a few hours. </p><p>Overrun gear consisting of hook cables or elastic nets known as barriers are commonly used as a backup system. Barrier nets catch the wings and fuselage of an aircraft and use an arresting engine or other methods such as anchor chains or bundles of woven textile material to slow the aircraft down. On some land-based airfields where the overrun area is short, a series of concrete blocks referred to as an <a href="/wiki/Engineered_materials_arrestor_system" title="Engineered materials arrestor system">engineered materials arrestor system</a> (EMAS) is used. These materials are used to catch the landing gear of an aircraft and slow it via rolling resistance and friction. Aircraft are stopped by the transfer of energy required to crush the blocks. Unlike other types of arresting gear, EMAS is also used at some civilian airports where the overrun area is shorter than would normally be allowed. </p><p>The first use of a barrier on a military airfield was during the <a href="/wiki/Korean_War" title="Korean War">Korean War</a> when jet fighters had to operate from shorter airfields where there was no margin for error. The system used was just a transplant of the Davis Barrier used on straight deck carriers to keep any aircraft that missed the arrest wires from crashing into the aircraft parked forward of the landing area. But instead of the more complex hydraulic system used on carriers to stop the aircraft when it hits the barrier the land based system used heavy ship anchor chains to bring the aircraft to a halt.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Components">Components</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arresting_gear&action=edit&section=5" title="Edit section: Components"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Cross_deck_pendants.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b5/Cross_deck_pendants.jpg/220px-Cross_deck_pendants.jpg" decoding="async" width="220" height="138" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b5/Cross_deck_pendants.jpg/330px-Cross_deck_pendants.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b5/Cross_deck_pendants.jpg/440px-Cross_deck_pendants.jpg 2x" data-file-width="1259" data-file-height="790" /></a><figcaption>New cross-deck pendants are coiled and ready for quick installation.</figcaption></figure> <p>The major systems that make up typical arresting gear are the hook cable or pendants, purchase cables or tapes, sheaves, and arresting engines.<sup id="cite_ref-NAVEDTRA_14310_6-0" class="reference"><a href="#cite_note-NAVEDTRA_14310-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Cross-deck_pendant">Cross-deck pendant</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arresting_gear&action=edit&section=6" title="Edit section: Cross-deck pendant"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Arresting_Gear_mechanics.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/37/Arresting_Gear_mechanics.jpg/220px-Arresting_Gear_mechanics.jpg" decoding="async" width="220" height="176" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/37/Arresting_Gear_mechanics.jpg/330px-Arresting_Gear_mechanics.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/37/Arresting_Gear_mechanics.jpg/440px-Arresting_Gear_mechanics.jpg 2x" data-file-width="3000" data-file-height="2400" /></a><figcaption>A-gear mechanics replace a leaf spring.</figcaption></figure> <p>Also known as arresting cables or wires, cross-deck pendants are flexible steel cables that are spanned across the landing area to be engaged by the <a href="/wiki/Tailhook" title="Tailhook">arresting hook</a> of an incoming aircraft. On aircraft carriers there are either three or four cables, numbered 1–4 from aft to forward. Pendants are made of wire rope with a diameter of <style data-mw-deduplicate="TemplateStyles:r1154941027">.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .den{vertical-align:sub}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}</style>1, <span class="frac">1<span class="sr-only">+</span><span class="num">1</span>⁄<span class="den">4</span></span> or <span class="frac">1<span class="sr-only">+</span><span class="num">3</span>⁄<span class="den">8</span></span> inches (25, 32 or 35 mm). Each wire rope is made up of numerous strands twisted about an oiled <a href="/wiki/Hemp" title="Hemp">hemp</a> center core, which provides a "cushion" for each strand and also supplies cable lubrication. The cable ends are equipped with terminal couplings designed for quick detachment during replacement and are able to be rapidly detached and replaced (in about 2–3 minutes on aircraft carriers).<sup id="cite_ref-NAVEDTRA_14310_6-1" class="reference"><a href="#cite_note-NAVEDTRA_14310-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> On U.S. carriers, the arresting cables are removed and replaced after each 125 arrested landings.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> Individual cables are often removed and left "stripped" in order to perform maintenance on other components of the arresting gear during aircraft recoveries (using other, on line, systems). Wire supports raise the deck pendants several inches so that they may be picked up by the tailhook of a landing aircraft. The wire supports on carriers are merely curved steel leaf springs that can flex to allow an aircraft to taxi over the installed deck pendant. On land based systems, 6-inch (15 cm) diameter "donut"-shaped rubber supports raise the cable off the runway surface approximately 3 inches (7.5 cm).<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Purchase_cables_or_tapes">Purchase cables or tapes</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arresting_gear&action=edit&section=7" title="Edit section: Purchase cables or tapes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The purchase cable is a wire rope that looks very similar to the arresting cable. They are much longer, however, and are not designed to be easily removed. There are two purchase cables per arresting cable, and they connect to each end of the arresting wire. Purchase cables connect the arresting wire to the arresting gear engines and "pay out" as the arresting wire is engaged by the aircraft. As an incoming aircraft engages the deck pendant, the purchase cable transmits the force of the landing aircraft from the deck gear to the arresting engine. The pendant (arresting wire) is "swaged" (attached) to the purchase cable by means of a loop created with <a href="/wiki/Zinc" title="Zinc">zinc</a> heated to 1,000 °F (540 °C). This onboard fabrication is considered dangerous, and it is reported the US Navy is testing the use of an automated press to accomplish it more safely.<sup id="cite_ref-A&S_2015_2-1" class="reference"><a href="#cite_note-A&S_2015-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 56">: 56 </span></sup><sup id="cite_ref-NAVEDTRA_14310_6-2" class="reference"><a href="#cite_note-NAVEDTRA_14310-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> On land based systems, heavy nylon tapes are used in place of purchase cables, but they serve the same function. </p> <div class="mw-heading mw-heading3"><h3 id="Sheaves">Sheaves</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arresting_gear&action=edit&section=8" title="Edit section: Sheaves"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Purchase cables or tapes run through sheaves in the flight deck or alongside of the runway to the arresting engines. Damper sheaves act as hydraulic shock absorbers that provide for the increased landing speeds. </p> <div class="mw-heading mw-heading3"><h3 id="Spray-type_arrest_gear">Spray-type arrest gear</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arresting_gear&action=edit&section=9" title="Edit section: Spray-type arrest gear"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In 1957 the concept of a piston being pulled through a tube of water was first purposed as a cheap arrest gear system for land airbases.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> In the early 1960s, the British took this basic concept and developed a spray-type arrest gear system for both land and sea use. The engine had hydraulic cylinders that moved through water filled pipe, with a smaller pipe alongside that has holes of various size along its length. The <a href="/wiki/Royal_Navy" title="Royal Navy">Royal Navy</a> claimed that there was no theoretical weight limit, but there was a speed limit.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Arresting_engines">Arresting engines</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arresting_gear&action=edit&section=10" title="Edit section: Arresting engines"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:VFA-147_FA-18C_Hornet_catching_arresting_wire_on_USS_Nimitz_(CVN-68)_971106-N-6939M-269.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b2/VFA-147_FA-18C_Hornet_catching_arresting_wire_on_USS_Nimitz_%28CVN-68%29_971106-N-6939M-269.jpg/220px-VFA-147_FA-18C_Hornet_catching_arresting_wire_on_USS_Nimitz_%28CVN-68%29_971106-N-6939M-269.jpg" decoding="async" width="220" height="268" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b2/VFA-147_FA-18C_Hornet_catching_arresting_wire_on_USS_Nimitz_%28CVN-68%29_971106-N-6939M-269.jpg/330px-VFA-147_FA-18C_Hornet_catching_arresting_wire_on_USS_Nimitz_%28CVN-68%29_971106-N-6939M-269.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b2/VFA-147_FA-18C_Hornet_catching_arresting_wire_on_USS_Nimitz_%28CVN-68%29_971106-N-6939M-269.jpg/440px-VFA-147_FA-18C_Hornet_catching_arresting_wire_on_USS_Nimitz_%28CVN-68%29_971106-N-6939M-269.jpg 2x" data-file-width="1707" data-file-height="2076" /></a><figcaption>An <a href="/wiki/F/A-18_Hornet" class="mw-redirect" title="F/A-18 Hornet">F/A-18 Hornet</a> engages the #4 wire, with the white retractable deck sheave in the foreground.</figcaption></figure> <p>Each pendant has its own engine systems that absorb and dispel the energies developed when a landing aircraft is arrested. On American <a href="/wiki/Nimitz-class_aircraft_carrier" title="Nimitz-class aircraft carrier"><i>Nimitz</i>-class</a> carriers, hydro-pneumatic systems are used, each weighing 43 <a href="/wiki/Short_ton" title="Short ton">short tons</a> (39 <a href="/wiki/Tonne" title="Tonne">t</a>), wherein oil is hydraulically forced out of a cylinder by a ram connected to the purchase cable, through a control valve.<sup id="cite_ref-A&S_2015_2-2" class="reference"><a href="#cite_note-A&S_2015-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup class="reference nowrap"><span title="Page / location: 52">: 52 </span></sup><sup id="cite_ref-NAVEDTRA_14310_6-3" class="reference"><a href="#cite_note-NAVEDTRA_14310-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> A major development in arresting gear was the constant runout control valve, which controls the fluid flow from the engine cylinder to the accumulator and is designed to stop all aircraft with the same amount of runout regardless of mass and speed. The aircraft's weight is set by each arresting gear engine's operator. During normal operations, a "single weight setting" is used for simplicity. This weight is usually the maximum landing, or "max trap", weight for the aircraft. In certain cases, usually aircraft malfunctions, which affect approach speed, a "single weight setting" is used to ensure proper energy absorption by the system. The operator is given the weight of the aircraft by the air officer in Primary Flight Control. The operator then sets the constant runout control valve to the appropriate weight setting for that aircraft. The pressure setting for the arresting gear engine remains at a constant pressure of about 400 psi (2,800 kPa). The constant runout valve (CROV) stops the aircraft, as opposed to hydraulic pressure.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (August 2019)">citation needed</span></a></i>]</sup> </p><p>Permanent and expeditionary land based systems usually consist of two arresting engines located on either side of the runway. The arresting engines apply braking force to reels holding the purchase tapes, which in turn slow the aircraft and bring it to a stop. The two most common methods used by land based arresting engines to apply the braking force are the rotary friction brake and the rotary hydraulic, or "water twister", systems. The rotary friction brake is simply a hydraulic pump coupled to the reel, which applies a graduated pressure to multi-disc brakes mounted on the reel. The rotary hydraulic system is a turbine inside a water/glycol-filled housing coupled to the reel. The turbulence generated in the water/glycol mixture by the turbine during the arrestment provides the resistance to slow the reel and stop the aircraft. Once the aircraft is released from the cable, the tapes and cable are retracted by an internal combustion engine or electric motor installed on the arresting engine.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (August 2019)">citation needed</span></a></i>]</sup> </p><p>Excessive runout during an arrestment is a condition known as a "two-block." This name is derived from naval parlance when all the line has been pulled through a pulley system, the two pulley blocks are touching, hence "two blocked". Excessive runout can be caused by improper arresting gear settings, excess aircraft gross weight, excess aircraft engagement speed, or excess airplane thrust applied during the arrestment. Off center landings also have the danger of damaging the arresting gear.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (August 2019)">citation needed</span></a></i>]</sup> </p> <div class="mw-heading mw-heading3"><h3 id="Advanced_Arresting_Gear_landing_system">Advanced Arresting Gear landing system</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arresting_gear&action=edit&section=11" title="Edit section: Advanced Arresting Gear landing system"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Advanced_Arresting_Gear" title="Advanced Arresting Gear">Advanced Arresting Gear</a></div> <p>Electromagnets are being used in the new <a href="/wiki/Advanced_Arresting_Gear" title="Advanced Arresting Gear">Advanced Arresting Gear</a> (AAG) system on American aircraft carriers. The current system (above) relies on hydraulics to slow and stop a landing aircraft. While the hydraulic system is effective, as demonstrated by more than fifty years of implementation, the AAG system offers a number of improvements. The current system is unable to capture unmanned aerial vehicles (UAVs) without damaging them due to extreme stresses on the airframe. UAVs do not have the necessary mass to drive the large hydraulic piston used to trap heavier, manned airplanes. By using electromagnetics the energy absorption is controlled by a turbo-electric engine. This makes the trap smoother and reduces shock on airframes. Even though the system will look the same from the flight deck as its predecessor, it will be more flexible, safe, and reliable, and will require less maintenance and manning.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> This system is being trialed on the <a href="/wiki/USS_Gerald_R._Ford" title="USS Gerald R. Ford">USS <i>Gerald R. Ford</i></a> and will be installed on all of the <a href="/wiki/Gerald_R._Ford-class_aircraft_carrier" title="Gerald R. Ford-class aircraft carrier"><i>Gerald R. Ford</i>-class</a> <a href="/wiki/Aircraft_carrier" title="Aircraft carrier">aircraft carriers</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Barricade">Barricade</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arresting_gear&action=edit&section=12" title="Edit section: Barricade"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Aircraft_carrier_barricade.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a3/Aircraft_carrier_barricade.jpg/220px-Aircraft_carrier_barricade.jpg" decoding="async" width="220" height="207" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a3/Aircraft_carrier_barricade.jpg/330px-Aircraft_carrier_barricade.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a3/Aircraft_carrier_barricade.jpg/440px-Aircraft_carrier_barricade.jpg 2x" data-file-width="912" data-file-height="858" /></a><figcaption>Carrier barricade in the raised position</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:US_Navy_DN-SC-93-04867_to_04876_S-3A_Viking_emergency_landing_USS_Abraham_Lincoln_(CVN-72)_animation.gif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9e/US_Navy_DN-SC-93-04867_to_04876_S-3A_Viking_emergency_landing_USS_Abraham_Lincoln_%28CVN-72%29_animation.gif/220px-US_Navy_DN-SC-93-04867_to_04876_S-3A_Viking_emergency_landing_USS_Abraham_Lincoln_%28CVN-72%29_animation.gif" decoding="async" width="220" height="141" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9e/US_Navy_DN-SC-93-04867_to_04876_S-3A_Viking_emergency_landing_USS_Abraham_Lincoln_%28CVN-72%29_animation.gif/330px-US_Navy_DN-SC-93-04867_to_04876_S-3A_Viking_emergency_landing_USS_Abraham_Lincoln_%28CVN-72%29_animation.gif 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9e/US_Navy_DN-SC-93-04867_to_04876_S-3A_Viking_emergency_landing_USS_Abraham_Lincoln_%28CVN-72%29_animation.gif/440px-US_Navy_DN-SC-93-04867_to_04876_S-3A_Viking_emergency_landing_USS_Abraham_Lincoln_%28CVN-72%29_animation.gif 2x" data-file-width="800" data-file-height="512" /></a><figcaption>A <a href="/wiki/S-3_Viking" class="mw-redirect" title="S-3 Viking">S-3A Viking</a> making an emergency landing into the barricade on the flight deck of the <a href="/wiki/USS_Abraham_Lincoln_(CVN-72)" title="USS Abraham Lincoln (CVN-72)">USS <i>Abraham Lincoln</i> (CVN-72)</a>. The aircraft was unable to make a normal arrested recovery because of damaged landing gear.</figcaption></figure> <p>The barricade is an emergency recovery system used only when a normal (pendant) arrestment cannot be made. The barricade is normally in a stowed condition and rigged only when required. To rig a barricade, it is stretched across the flight deck between stanchions, which are raised from the flight deck. Rigging the barricade is routinely practiced by U.S. carrier flight deck personnel; a well trained crew can accomplish the task in under three minutes.<sup id="cite_ref-NAVEDTRA_14310_6-4" class="reference"><a href="#cite_note-NAVEDTRA_14310-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p><p>The barricade webbing consists of upper and lower horizontal loading straps joined to each other at the ends. Five vertical engaging straps, spaced 20 feet (6 m) apart, are connected to each upper and lower load strap. The barricade webbing is raised to a height of approximately 20 feet. The barricade webbing engages the wings of the landing aircraft, wherein energy is transmitted from the barricade webbing through the purchase cable to the arresting engine. Following a barricade arrestment, the webbing and deck cables are discarded and the stanchions are lowered back into their recessed slots. Barricade engagements are rare, as tailhooks are designed to be extremely fail-safe, and an aircraft returning from combat with such severe damage would likely not be able to land. This device has been installed on all American aircraft carriers and on the French <i>Charles de Gaulle</i>, while Brazilian CATOBAR and Russian and Indian STOBAR aircraft carriers have only conventional arresting gear installed.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (October 2014)">citation needed</span></a></i>]</sup> </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arresting_gear&action=edit&section=13" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Aircraft_catapult" title="Aircraft catapult">Aircraft catapult</a></li> <li><a href="/wiki/Aviation-capable_naval_vessel" title="Aviation-capable naval vessel">Aviation-capable naval vessel</a></li> <li><a href="/wiki/Brodie_landing_system" title="Brodie landing system">Brodie landing system</a></li> <li><a href="/wiki/Modern_US_Navy_carrier_air_operations" class="mw-redirect" title="Modern US Navy carrier air operations">Modern US Navy carrier air operations</a></li> <li><a href="/wiki/Engineered_materials_arrestor_system" title="Engineered materials arrestor system">Engineered materials arrestor system</a> - a system to limit the severity of a runway excursion</li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arresting_gear&action=edit&section=14" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.gracesguide.co.uk/C._C._Mitchell">"C. C. Mitchell"</a>. Graces Guide.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=C.+C.+Mitchell&rft.pub=Graces+Guide&rft_id=https%3A%2F%2Fwww.gracesguide.co.uk%2FC._C._Mitchell&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArresting+gear" class="Z3988"></span></span> </li> <li id="cite_note-A&S_2015-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-A&S_2015_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-A&S_2015_2-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-A&S_2015_2-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMola2015" class="citation magazine cs1">Mola, Roger (June–July 2015). <a rel="nofollow" class="external text" href="https://www.airspacemag.com/military-aviation/aircraft-carriers-cable-guys-180955347/">"An Aircraft Carrier's Cable Guys"</a>. <i>Air & Space</i><span class="reference-accessdate">. Retrieved <span class="nowrap">10 May</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Air+%26+Space&rft.atitle=An+Aircraft+Carrier%27s+Cable+Guys&rft.date=2015-06%2F2015-07&rft.aulast=Mola&rft.aufirst=Roger&rft_id=https%3A%2F%2Fwww.airspacemag.com%2Fmilitary-aviation%2Faircraft-carriers-cable-guys-180955347%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArresting+gear" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKeegan1989" class="citation book cs1"><a href="/wiki/John_Keegan" title="John Keegan">Keegan, John</a> (1989). <span class="id-lock-registration" title="Free registration required"><a rel="nofollow" class="external text" href="https://archive.org/details/priceofadmiralty00keeg/page/276"><i>The Price of Admiralty</i></a></span>. New York: Viking. p. <a rel="nofollow" class="external text" href="https://archive.org/details/priceofadmiralty00keeg/page/276">276</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-670-81416-4" title="Special:BookSources/0-670-81416-4"><bdi>0-670-81416-4</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Price+of+Admiralty&rft.place=New+York&rft.pages=276&rft.pub=Viking&rft.date=1989&rft.isbn=0-670-81416-4&rft.aulast=Keegan&rft.aufirst=John&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Fpriceofadmiralty00keeg%2Fpage%2F276&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArresting+gear" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.thefreelibrary.com/OK+two+wire!+Ronald+Reagan+(CVN+76)+ramps+up+new+technology.-a090332253">"OK two wire! Ronald Reagan (CVN 76) ramps up new technology"</a>. thefreelibrary.com. 1 July 2002.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=OK+two+wire%21+Ronald+Reagan+%28CVN+76%29+ramps+up+new+technology&rft.pub=thefreelibrary.com&rft.date=2002-07-01&rft_id=https%3A%2F%2Fwww.thefreelibrary.com%2FOK%2Btwo%2Bwire%21%2BRonald%2BReagan%2B%28CVN%2B76%29%2Bramps%2Bup%2Bnew%2Btechnology.-a090332253&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArresting+gear" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHearst_Magazines1954" class="citation magazine cs1">Hearst Magazines (May 1954). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=oN0DAAAAMBAJ&pg=PA127">"<span class="cs1-kern-left"></span>'Tennis Net' Crash Barrier Halts Jets at End of Runway"</a>. <i>Popular Mechanics</i>. Hearst Magazines. p. 127.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Popular+Mechanics&rft.atitle=%27Tennis+Net%27+Crash+Barrier+Halts+Jets+at+End+of+Runway&rft.pages=127&rft.date=1954-05&rft.au=Hearst+Magazines&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DoN0DAAAAMBAJ%26pg%3DPA127&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArresting+gear" class="Z3988"></span></span> </li> <li id="cite_note-NAVEDTRA_14310-6"><span class="mw-cite-backlink">^ <a href="#cite_ref-NAVEDTRA_14310_6-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-NAVEDTRA_14310_6-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-NAVEDTRA_14310_6-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-NAVEDTRA_14310_6-3"><sup><i><b>d</b></i></sup></a> <a href="#cite_ref-NAVEDTRA_14310_6-4"><sup><i><b>e</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20141018185010/http://www.globalsecurity.org/military/library/policy/navy/nrtc/14310.pdf">"Aviation Boatswain's. Mate E. NAVEDTRA 14310 (Nonresident Training Course)"</a> <span class="cs1-format">(PDF)</span>. <i>GlobalSecurity.org</i>. Naval Education and Training Professional Development and Technology Center. July 2001. Archived from <a rel="nofollow" class="external text" href="http://www.globalsecurity.org/military/library/policy/navy/nrtc/14310.pdf">the original</a> <span class="cs1-format">(PDF)</span> on 18 October 2014.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=GlobalSecurity.org&rft.atitle=Aviation+Boatswain%27s.+Mate+E.+NAVEDTRA+14310+%28Nonresident+Training+Course%29&rft.date=2001-07&rft_id=http%3A%2F%2Fwww.globalsecurity.org%2Fmilitary%2Flibrary%2Fpolicy%2Fnavy%2Fnrtc%2F14310.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArresting+gear" class="Z3988"></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text">CV NATOPS, pp. 6–8.</span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.skybrary.aero/index.php/Runway_Arrestor_Gear_Systems">"Runway Arrestor Gear Systems - SKYbrary Aviation Safety"</a>. <i>skybrary.aero</i><span class="reference-accessdate">. Retrieved <span class="nowrap">5 September</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=skybrary.aero&rft.atitle=Runway+Arrestor+Gear+Systems+-+SKYbrary+Aviation+Safety&rft_id=https%3A%2F%2Fwww.skybrary.aero%2Findex.php%2FRunway_Arrestor_Gear_Systems&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArresting+gear" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation magazine cs1"><a rel="nofollow" class="external text" href="https://books.google.com/books?id=PeEDAAAAMBAJ&pg=PA119">"New Jet-landing Method Permits Aircraft to Stop Within 100 Yard"</a>. <i>Popular Mechanics</i>. Hearst Magazines. April 1957. p. 119.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Popular+Mechanics&rft.atitle=New+Jet-landing+Method+Permits+Aircraft+to+Stop+Within+100+Yard&rft.pages=119&rft.date=1957-04&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DPeEDAAAAMBAJ%26pg%3DPA119&rfr_id=info%3Asid%2Fen.wikipedia.org%3AArresting+gear" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.flightglobal.com/pdfarchive/view/1962/1962%20-%201369.html">"World News – Spray Type Arrest Gear"</a> <i>Flight International</i>, 9 August 1962.</span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text">Rodriguez, Carmelo. "Launch and Recovery Testing". ITEA-SAN. Turboelectric Arresting Gear. Mission Valley Hotel, San Diego. 16 June 2005.</span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Arresting_gear&action=edit&section=15" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1;min-width:0}}@media(min-width:720px){.mw-parser-output .side-box{width:238px}.mw-parser-output .side-box-right{clear:right;float:right;margin-left:1em}.mw-parser-output .side-box-left{margin-right:1em}}</style><style data-mw-deduplicate="TemplateStyles:r1237033735">@media print{body.ns-0 .mw-parser-output .sistersitebox{display:none!important}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-en-v2.svg"]{background-color:white}}</style><div class="side-box side-box-right plainlinks sistersitebox"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style> <div class="side-box-flex"> <div class="side-box-image"><span class="noviewer" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png" decoding="async" width="30" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/45px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/59px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span></div> <div class="side-box-text plainlist">Wikimedia Commons has media related to <span style="font-weight: bold; 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