Allison T38

[1] Developed as a stand-alone single section of the T40 (Model 500) twin engine to aid in development of the T40, the T38 started life with a 19-stage axial compressor, eight can type combustion chambers, a 4-stage turbine driving the compressor and the extension shaft to the reduction gearbox.[2] Initially rated at 2,000 shp (1,500 kW) the T38 first ran in 1947 and flew in the nose of a Boeing B-17 Flying Fortress test-bed on 19 April 1949, rated at 2,250 shp (1,680 kW).The engines fitted to the Convair CV-240-21 Turboliner were rated to 2,750 shp (2,050 kW) equivalent.[2] In 1951, the United States Air Force decided that the production version of the Beechcraft XT-36 trainer—then in the mockup stage and designed for the Pratt & Whitney R-2800—would be retrofitted with the T38 when the engine entered full-scale production, which was anticipated to occur in 1955–1960.[3] Although the only other aircraft slated to receive the T38 as a production engine, the Convair T-29E, was cancelled, the T38 did power a converted Convair CV-240 (the CV-240-21 Turboliner, a project that would be abandoned due to engine problems), and was fitted in the nose of the McDonnell XF-88B to drive experimental supersonic propellers.
TurboshaftUnited StatesAllison Engine CompanyCV-240-21 TurbolinerMcDonnell XF-88BAllison T40Allison T56Boeing B-17 Flying FortressConvair CV-240-21 TurbolinerUnited States Air ForceBeechcraft XT-36mockupPratt & Whitney R-2800Convair T-29EConvair CV-240Piasecki YH-16A TransporterBoeing B-17TurbopropgearboxCombustorsTurbineOctaneGasolineDry sumpscavenge pumpOverall pressure ratioSpecific fuel consumptionPower-to-weight ratioList of aircraft enginesGeneral Accounting Officeaircraft enginesV enginesVG-1410V-1710V-3420TurbojetsTurbofansAE 3007AR.168RTurbopropsTurboshafts250/T63AE 2100variantsPropfan578-DXUnited States militarydesignation systemLHTEC T800APW T800Adaptive cycle engines