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美国政府科技报告
>AN INVESTIGATION OF A FOUR-BLADE SINGLE-ROTATION PROPELLER IN COMBINATION WITH AN NACA 1-SERIES D-TYPE COWLING AT MACH NUMBERS UP TO 0.83
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AN INVESTIGATION OF A FOUR-BLADE SINGLE-ROTATION PROPELLER IN COMBINATION WITH AN NACA 1-SERIES D-TYPE COWLING AT MACH NUMBERS UP TO 0.83
An investigation has been made of a four-blade single-rotation propeller in combination with an NACA 1-series D-type spinner-cowling combination at Mach numbers up to O.83. Characteristics of the propeller operating in the presence of the cowling are compared with the characteristics of the propeller with the spinner. Pressure distributions on the surfaces of the cowling with the propeller operating are compared with the pressure distributions on the cowling with the propeller removed. The data were obtained at a Reynolds number of 1.5 million per foot based on the wind-tunnel datum velocity.
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