doppler gun used to measure the speed of movin objects..?
related to mach speed.some mr mach?
charles/chuck yeager---bell x-1---1st aircraft to cross mach 1(speed of sound) and diagram shows sonic boom.
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doppler gun used to measure the speed of movin objects..?
related to mach speed.
some mr mach?
charles/chuck yeager---bell x-1---1st aircraft to cross mach 1(speed of sound) and diagram shows sonic boom.
Post a Comment