Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Counter-rotating_propellers> ?p ?o. }
Showing items 1 to 32 of
32
with 100 items per page.
- 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 or 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 AvantiAt 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 PiperPA-44-180SeminoleC-FLZJ02.jpg?width=300.
- Counter-rotating_propellers wikiPageID "7840468".
- Counter-rotating_propellers wikiPageRevisionID "605944453".
- Counter-rotating_propellers hasPhotoCollection Counter-rotating_propellers.
- Counter-rotating_propellers subject Category:Aircraft_engines.
- Counter-rotating_propellers subject Category:Propellers.
- Counter-rotating_propellers type AircraftEngine102687423.
- Counter-rotating_propellers type AircraftEngines.
- Counter-rotating_propellers type Artifact100021939.
- Counter-rotating_propellers type Device103183080.
- Counter-rotating_propellers type Engine103287733.
- Counter-rotating_propellers type Instrumentality103575240.
- Counter-rotating_propellers type Machine103699975.
- Counter-rotating_propellers type MechanicalDevice103736970.
- Counter-rotating_propellers type Mechanism103738472.
- Counter-rotating_propellers type Motor103789946.
- Counter-rotating_propellers type Object100002684.
- Counter-rotating_propellers type PhysicalEntity100001930.
- Counter-rotating_propellers type Propeller104011827.
- Counter-rotating_propellers type Propellers.
- Counter-rotating_propellers type Whole100003553.
- 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 label "反向旋转螺旋桨".
- Counter-rotating_propellers sameAs m.026fwp2.
- Counter-rotating_propellers sameAs Q4989905.
- Counter-rotating_propellers sameAs Q4989905.
- Counter-rotating_propellers sameAs Counter-rotating_propellers.
- Counter-rotating_propellers wasDerivedFrom Counter-rotating_propellers?oldid=605944453.
- Counter-rotating_propellers depiction PiperPA-44-180SeminoleC-FLZJ02.jpg.
- Counter-rotating_propellers isPrimaryTopicOf Counter-rotating_propellers.
