Study extends initial investigation (see Engineering Index 1956, p 56, under Aircraft Propellers -- Vibrations) to obtain information on oscillating pressures at various forward speeds, power, and engine speed; effects shown as comparisons of noise emitted from rectangular and tapered blade propellers with changes in operating parameters of Mach number, power, and engine speed.
Effects of blade plan form on free-space oscillating pressures near propellers at flight Mach numbers to 0.72
NACA -- Tech Note
NACA -- Technical Note ; n 4068
1957
20 pages
Aufsatz (Zeitschrift)
Englisch
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