The variation in engine power with altitude determined from measurements in flight with a hub dynamometer (1929)
NASA Technical Reports Server (NTRS) · leaf 4
THE VARIATION IN ENGINE POWER 325 Pressure, in. Hg. R.P.M. 18 22 26 30 (500 1600 260 320 380 20 40 60 .60 80 Brake horsepower Temperafure.'F Air speed, M.P.H. Fia. 1.—Data from a representative climb. Flight No. 6 of the modified DH-4 airplane wi; h a Liberty 12 engine and a standard Martin bomber… … O 2000 4000 6000 8000 lOOOO I200O Standard olfifude, ft Jig. 2.—The percentage relation of brake horsepower to altitude for three Liberty 12 engines data points to give a comparison of the two theoretical relations with the most reliable experi- mental relation. Figure 4 illustrates the variation…
NASA Technical Reports Server (NTRS)
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