United States. National Advisory Committee for Aeronautics, United States. National Aeronautics and Space Administration · Washington : G.P.O. · leaf 99
3 4 5 6 prtssure drop . inches or mercuryFig. 17. OBSERVATIOD PAUEL … VECTOR LINKAGE(AKiVE TUNUIL) COMPENSATING TJES!STA>^CE ,(INSIDE TUNNEL) Fig. 18. The determination of true velocity is dependent upon a knowledge of the temperature anddensity of the air flowing through the observation section. The temperature is calculated onthe assumption that the expansion is…
Aeronautics
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