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- Counter-rotating_propellers abstract "Counter-rotating propellers, also referred to as CRP, found on twin- and multi-engine propeller-driven aircraft, spin in directions opposite one another.The propellers on both engines of most conventional twin-engined aircraft spin clockwise (as viewed from the pilot seat). Counter-rotating propellers generally spin clockwise on the left engine and counter-clockwise on the right. The advantage of such designs is that counter-rotating propellers balance the effects of torque and P-factor, eliminating the problem of the critical engine.In designing the Lockheed P-38 Lightning, the decision was made to reverse the counter-rotation such that the "tops" of the propeller arcs move outwards, away from each other. Tests on the initial XP-38 prototype demonstrated greater accuracy in gunnery with the unusual configuration. The counter-rotating powerplants of the German World War II Henschel Hs 129 ground attack aircraft, Heinkel He 177 heavy bomber and Messerschmitt Me 323 transport used the same rotational "sense" as the production P-38 did.Drawbacks of counter-rotating propellers come from the fact that, in order to reverse sense of rotation of one propeller, a gearbox needs to be used or the engine installation must be different. This may increase weight (gearbox), or maintenance and spare parts costs for the engines and propellers, as different spare parts need to be produced in lower numbers, compared to a conventional installation.Counter-rotating propellers should not be confused with contra-rotating propellers (propellers that share a common axis).The following aircraft have counter-rotating propellers:Single engine, chain driven propellers :The Wright FlyerTwin-engine, one engine per wing :de Havilland HornetLockheed P-38 LightningHeinkel He 177 Greif (fourth prototype onwards)Henschel Hs 129Piper PA-31 NavajoPiper PA-34 SenecaPiper PA-39 Twin Comanche C/RPiper PA-40 ArapahoPiper PA-44 SeminoleCessna T303 CrusaderBeechcraft 76 DuchessPiaggio P.180 AvantiVought V-173 Flying PancakeAt least four engines, two or more on each wing :Messerschmitt Me 323 Gigant transportAirbus A400M Atlas - first aircraft with propellers in counter-rotating pairs on each wing↑".
- Counter-rotating_propellers thumbnail Counter-rotating_propellers.gif?width=300.
- Counter-rotating_propellers wikiPageID "7840468".
- Counter-rotating_propellers wikiPageLength "3096".
- Counter-rotating_propellers wikiPageOutDegree "34".
- Counter-rotating_propellers wikiPageRevisionID "668931935".
- Counter-rotating_propellers wikiPageWikiLink Airbus_A400M_Atlas.
- Counter-rotating_propellers wikiPageWikiLink Aircraft.
- Counter-rotating_propellers wikiPageWikiLink Beech_Duchess.
- Counter-rotating_propellers wikiPageWikiLink Beechcraft_Duchess.
- Counter-rotating_propellers wikiPageWikiLink Category:Aircraft_engines.
- Counter-rotating_propellers wikiPageWikiLink Category:Propellers.
- Counter-rotating_propellers wikiPageWikiLink Cessna_303.
- Counter-rotating_propellers wikiPageWikiLink Cessna_T303_Crusader.
- Counter-rotating_propellers wikiPageWikiLink Contra-rotating_propellers.
- Counter-rotating_propellers wikiPageWikiLink Critical_engine.
- Counter-rotating_propellers wikiPageWikiLink De_Havilland_Hornet.
- Counter-rotating_propellers wikiPageWikiLink Engine.
- Counter-rotating_propellers wikiPageWikiLink Heinkel_He_177.
- Counter-rotating_propellers wikiPageWikiLink Helicopter_rotor.
- Counter-rotating_propellers wikiPageWikiLink Henschel_Hs_129.
- Counter-rotating_propellers wikiPageWikiLink Intermeshing_rotors.
- Counter-rotating_propellers wikiPageWikiLink Lockheed_P-38_Lightning.
- Counter-rotating_propellers wikiPageWikiLink Messerschmitt_Me_323.
- Counter-rotating_propellers wikiPageWikiLink P-factor.
- Counter-rotating_propellers wikiPageWikiLink Piaggio_P.180_Avanti.
- Counter-rotating_propellers wikiPageWikiLink Piper_PA-30_Twin_Comanche.
- Counter-rotating_propellers wikiPageWikiLink Piper_PA-31_Navajo.
- Counter-rotating_propellers wikiPageWikiLink Piper_PA-34_Seneca.
- Counter-rotating_propellers wikiPageWikiLink Piper_PA-40_Arapaho.
- Counter-rotating_propellers wikiPageWikiLink Piper_PA-44_Seminole.
- Counter-rotating_propellers wikiPageWikiLink Propeller_(aeronautics).
- Counter-rotating_propellers wikiPageWikiLink Propeller_(aircraft).
- Counter-rotating_propellers wikiPageWikiLink Screw-propelled_vehicle.
- Counter-rotating_propellers wikiPageWikiLink Tiltrotor.
- Counter-rotating_propellers wikiPageWikiLink Torque.
- Counter-rotating_propellers wikiPageWikiLink Vought_V-173.
- Counter-rotating_propellers wikiPageWikiLink Wright_Flyer.
- Counter-rotating_propellers wikiPageWikiLink File:Counter-rotating_propellers.gif.
- Counter-rotating_propellers wikiPageWikiLinkText "Counter-rotating propellers".
- Counter-rotating_propellers wikiPageWikiLinkText "counter-rotate".
- Counter-rotating_propellers wikiPageWikiLinkText "counter-rotating engines".
- Counter-rotating_propellers wikiPageWikiLinkText "counter-rotating propeller".
- Counter-rotating_propellers wikiPageWikiLinkText "counter-rotating propellers".
- Counter-rotating_propellers wikiPageWikiLinkText "counter-rotating".
- Counter-rotating_propellers wikiPageWikiLinkText "the propellers rotated "away" from each other".
- Counter-rotating_propellers wikiPageWikiLinkText "turn in opposite directions".
- Counter-rotating_propellers hasPhotoCollection Counter-rotating_propellers.
- Counter-rotating_propellers wikiPageUsesTemplate Template:Aircraft_gas_turbine_engine_components.
- Counter-rotating_propellers wikiPageUsesTemplate Template:Aircraft_piston_engine_components.
- Counter-rotating_propellers wikiPageUsesTemplate Template:Aviation-stub.
- Counter-rotating_propellers wikiPageUsesTemplate Template:Distinguish.
- Counter-rotating_propellers wikiPageUsesTemplate Template:Refimprove.
- Counter-rotating_propellers wikiPageUsesTemplate Template:Reflist.
- Counter-rotating_propellers subject Category:Aircraft_engines.
- Counter-rotating_propellers subject Category:Propellers.
- Counter-rotating_propellers type Article.
- Counter-rotating_propellers type Article.
- Counter-rotating_propellers type Component.
- Counter-rotating_propellers type Dynamic.
- Counter-rotating_propellers type Machine.
- Counter-rotating_propellers type Thing.
- Counter-rotating_propellers comment "Counter-rotating propellers, also referred to as CRP, found on twin- and multi-engine propeller-driven aircraft, spin in directions opposite one another.The propellers on both engines of most conventional twin-engined aircraft spin clockwise (as viewed from the pilot seat). Counter-rotating propellers generally spin clockwise on the left engine and counter-clockwise on the right.".
- Counter-rotating_propellers label "Counter-rotating propellers".
- Counter-rotating_propellers differentFrom Contra-rotating_propellers.
- Counter-rotating_propellers sameAs m.026fwp2.
- Counter-rotating_propellers sameAs Q4989905.
- Counter-rotating_propellers sameAs Q4989905.
- Counter-rotating_propellers sameAs 反向旋转螺旋桨.
- Counter-rotating_propellers wasDerivedFrom Counter-rotating_propellers?oldid=668931935.
- Counter-rotating_propellers depiction Counter-rotating_propellers.gif.
- Counter-rotating_propellers isPrimaryTopicOf Counter-rotating_propellers.