Investigation of Some Factors Affecting Comparisons of Wind-tunnel and Flight Measurements of Maximum Lift Coefficients for a Fighter-type Airplane
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FLIGHT TESTS VS WIND TUNNEL TESTS↗
Engineering topics
Sweberg, Harold H
Publications and source records attributed to Sweberg, Harold H.
Note on compressibility effects on downwash at the tail at subcritical speeds
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AIRPLANES - NORTH AMERICAN P-51B WIND TUNNEL TESTS↗
Summary of Measurements in Langley Full-Scale Tunnel of Maximum Lift Coefficients and Stalling Characteristics of Airplanes
The results of measurements in the Langley full-scale tunnel of the maximum lift coefficients and stalling characteristics of airplanes have been collected. The data have been analyzed to show the nature of the effects on maximum lift and stall of wing geometry, fuselages and nacelles, propeller slipstream, surface roughness, and wing leading-edge appendages such as ducts, armaments, tip slats, and airspeed heads. Comparisons of full-scale-tunnel and flight measurements of maximum lift and stall are included in some cases, and the effects of the different testing techniques on the maximum-lift measurements are also given.
Sweberg, Harold H↗
Air-Flow Surveys in the Region of the Tail Surfaces of a Single-Engine Airplane Equipped with Dual-Rotating Propellers
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PROPELLERS - WIND TUNNEL TESTS↗
Stability and Control Tests of a 3/4-Scale Model of the XP-69 Airplane in the NACA Full-Scale Tunnel
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ELEVATORS - DEFLECTION↗
Full-Scale Tunnel Investigation of the Control and Stability of a Twin-Engine Monoplane with Propellers Operating
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LIFT, DRAG & PITCHING MOMENTS - MONOPLANES↗
The Effect of Propeller Operation on the Air Flow in the Region of the Tail Plane for a Twin-engine Tractor Monoplane
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PROPELLERS, TANDEM↗
Ground effect on downwash angles and wake location
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Katzoff, S↗
Ground Effect on Downwash Angles and Wake Location
A theoretical study was made of the reduction in downwash and the upward displacement of the wake in the presence of the ground, and some verification of theory was obtained by means of air-flow measurements made with a ground-board and image-wing combination. Methods are given for estimating the effects and numerous examples are included to illustrate the nature of these effects and to show their order of magnitude.
Katzoff, S↗