United States. Army. Signal Corps · Washington · leaf 30
hat the flight efficiency of the airplane will be - w«.vt i A-cK., Fig. 11. spoiled. Besides, an undue and dangerous stress is being thrown upon other wires. 1. Where spars are concerned, there is an exception known as the arch . For instance, in the case of the Maurice Farman, the spars of the… … ukIL q_ll Fig. 12. to bend down a little. This would produce a dangerous bending stress, but as long as the wood is arched, or at any rate kept from bending downward, it will remain in direct compression and no danger can result. 2. Struts and spars must be symmetrical; by that I mean that the…
Aeronautics, Military
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