Aeronautic Instruments. Section IV : Direction Instruments (1923)
NASA Technical Reports Server (NTRS) · leaf 60
60 REPORT NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS. the tests a turn indicator and a pitching indicator were connected with their valves, ad jus ted for maximum air flow. The suction obtained at an air speed of 19.2 miles per hour was sufficient to operate the indicators in a satisfactory… … Fig. 10.—Pioneer propeller pump Fig. 11.—Pioneer electric pump In a destructive whirling test the propeller broke at a speed of 5,800 revolutions per minute. Electric pump.—The suctions in inches of water at 26° C. for various voltages are tabulated below, together with the amount of current…
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