The Behavior of Conventional Airplanes in Situations Thought to Lead to Most Crashes (1931)
NASA Technical Reports Server (NTRS) · leaf 14
N.A.C.A. Teclinical Note lIo.363 Fig.l Fig.l Portable instrument board carried by observer^ containing sensitive altimeter, data sheet, and six stop watches, all of which can be started simultaneously by means of the movable beam at the right.
NASA Technical Reports Server (NTRS)
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