25 research outputs found
An Estimate of the Effect of Engine Supercharging on the Take-off Thrust of a Typical Helicopter at Different Altitudes and Temperatures
Flight Investigation of NACA D(Sub S) Cowlings on the XP-42 Airplane IV : High-Inlet-Velocity Cowling Tested in Climb with and Without Propeller Cuffs and in High-Speed Level Flight Without Propeller Cuffs
Flight Investigation of NACA D(sub S) Cowlings on the XP-42 Airplane II : Low-Inlet-Velocity Cowling With Axial-Flow Fan and Propeller Cuffs
Flight Investigation of NACA D(sub S) Cowlings on the XP-42 Airplane III : Low-Inlet-Velocity Cowling Without Fan or Propeller Cuffs, With Axial-Flow Fan Alone, and With Two Different Sets of Propeller Cuffs
Flight Investigation of the Performance and Cooling Characteristics of a Long-Nose High-Inlet-Velocity Cowling on the XP-42 Airplane
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NACA Wartime Reports
From Summary: "A method is outlined for determining in flight the weight rate of air flow to the engine equipped with a Bendix-Stromberg injection-type carburetor. The method has the advantage that no additional equipment need be inserted in the charge-air system and only a few simple measurements are necessary. The analysis of an air-box calibration of the carburetor to be used in interpreting the flight measurements is shown by an example.
Apparatus for Obtaining a Supersonic Flow of Very Short Duration and Some Drag Measurements Obtained with Its Use
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NACA Memorandum Reports
Report discussing testing to check the improvement of 3 or 4 miles per hour in the maximum speed of the P-51B airplane as a result of sealing the wing-gun access doors and flap-spar lightening holes. Large variations in speed were observed during testing, so additional testing and analysis was carried out to determine the effects of various factors that were suspected of contributing to the inconsistency of the plane's performance