Preliminary Tests in the NACA Free-Spinning Wind Tunnel (1937)
NASA Technical Reports Server (NTRS) · leaf 6
nnel, observations are made of the air speed and tered in placing ballast to give exactly the desired rate of rotation; the air speed is taken from a calibrated values, the mass quantities are not kept within the tachometer and the rate of rotation is determined by limits of accuracy of the… … model for a permanent record of its spinning attitude TESTING TECHNIQUE and any oscillatory tendencies or unsteadiness. The Launching the model.—At the beginning of a test pictures are taken on 10 nun film at the rate of 64 per the model is mounted upon a launching spindle about second. About 10…
NASA Technical Reports Server (NTRS)
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