Gyroscopic Instruments for Instrument Flying (1938)
NASA Technical Reports Server (NTRS) · leaf 39
N. A.C.A. Technical Note No. 662 Figs. 1,3 Hi w … K/nperctfurc chorr?be> pi/mp . r I Figure 3.-Top y/eu/ of turn indicator test apparatus. T is the turn indicator and TT is o turn fable.
NASA Technical Reports Server (NTRS)
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