Pratt & Whitney R-2800 Double Wasp
During the war years, Pratt & Whitney continued to develop new ideas to upgrade the engine, including water injection for takeoff in cargo and passenger planes and to give emergency power in combat.Even more was coaxed from experimental models, with fan-cooled subtypes like the R-2800-57 producing 2,800 hp (2,100 kW), but in general the R-2800 was a rather highly developed powerplant right from the beginning.[4] The R-2800 powered several types of fighters and medium bombers during the war, including the US Navy's Vought F4U Corsair, with the XF4U-1 first prototype Corsair becoming the first airframe to fly (as originally designed) with the Double Wasp[7] in its XR-2800-4 prototype version on May 29, 1940,[8] and the first single-engine American fighter plane to exceed 400 mph (640 km/h) in level flight during October 1940.The R-2800 also powered the Corsair's naval rival, the Grumman F6F Hellcat, the US Army Air Forces' Republic P-47 Thunderbolt (which unusually, for single-engined aircraft, used a General Electric turbocharger), the twin-engine Martin B-26 Marauder and Douglas A-26 Invader, as well as the first purpose-built twin-engine radar-equipped night fighter, the Northrop P-61 Black Widow.When the US entered the war in December 1941, designs advanced rapidly, and long-established engines such as the Wright Cyclone and Double Wasp were re-rated on fuel of much higher octane rating (anti-knock value) to give considerably more power.The last two were twin-engine aircraft of size, passenger capacity, and high wing loading comparable to the DC-4 - itself usually powered by the R-2000 bored-out version of the Twin Wasp - and the first Constellations, which mostly used Wright Aeronautical's large Duplex-Cyclones.
National Museum of the United States Air ForceRadial engineUnited StatesPratt & WhitneyConvair CV-240 familyDouglas A-26 InvaderDouglas DC-6Grumman F6F HellcatMartin B-26 MarauderRepublic P-47 ThunderboltVought F4U Corsairair-cooledaircraft enginedisplacementWasp family of enginesWorld War IIwater injectionWright Duplex-CycloneGnome-Rhône 18Ldistributorsspecific powerUS Navy'sUS Army Air Forces'turbochargerNorthrop P-61 Black Widowoctane ratinganti-knockKorean WarMartin 4-0-4Convair 240R-2000 bored-out versionConstellationswarbirdair showsAlaskamethanolMartin B-26A, early B series and XB-26Dignition harnessBendix-Stromberg PT-13D-4 pressure carburetorNorthrop XP-61, YP-61, and P-61A-1.General Electricturbosuperchargerfluid couplingVought F4U-5 CorsairBrewster XA-32Breguet Deux-PontsCanadair CL-215Canadair C-5 North StarConsolidated TBY Sea WolfConvair 240, 340, and 440Curtiss P-60Curtiss XF15CCurtiss C-46 CommandoFairchild C-82 PacketFairchild C-123 ProviderGrumman AF GuardianGrumman F7F TigercatGrumman F8F BearcatHoward 500Lockheed Ventura/B-34 Lexington/PV-1 Ventura/PV-2 HarpoonLockheed XC-69E ConstellationMartin PBM-5 MarinerMartin 2-0-2North American AJ SavageNorth American XB-28Northrop XP-56 Black BulletNorthrop F-15 ReporterSikorsky CH-37 MojaveSikorsky S-60Vickers WarwickVultee YA-19BMuseum of AviationRobins AFBNew England Air MuseumBradley International AirportFinnairConvair MetropolitanHelsinki AirportFlorida Air MuseumYankee Air MuseumBelleville, MichiganFlying Leatherneck Aviation MuseumMCAS MiramarCaliforniaUSS Midway MuseumSan DiegoAerospace Museum of CaliforniaPopondettaOro ProvincePapua New GuineaStrokeDry weightValvetrainPoppetSuperchargercentrifugal type superchargerinjection carburetoroctanePower-to-weight ratioPratt & Whitney WaspPratt & Whitney R-985 Wasp JuniorPratt & Whitney R-1340 WaspPratt & Whitney R-1535 Twin Wasp JuniorPratt & Whitney R-1830 Twin WaspPratt & Whitney R-2000 Twin WaspPratt & Whitney R-4360 Wasp MajorAlfa Romeo 135BMW 802Bristol CentaurusFiat A.80Fiat A.82Nakajima HomareShvetsov ASh-73Wright R-2600 Twin CycloneList of aircraft enginesethanolTaylan, Justinaircraft enginesRadial enginesR-1340R-1535R-1690R-1830R-1860R-2000R-2060