REPORT NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS. 4 The kymograph used for this test is shown in Figure 1. It was designed to be rigid and com- pact as it had to be mounted in the air stream. A special type drive3 was developed to give a … guides. Fig. 1.—N. A. C A. kymograph RESULTS. As the actual kymograph records were very numerous, and as some were too faint for clear reproduction, it was thought confusing to show all; so only a few typical ones are given in Figure 2. 90 in. p. h. so m. p. h. 70 m. p. h. 60 m. p. h. JN4h— Roll;…
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