Preliminary Investigation of Modifications to Conventional Airplanes to Give Nonstalling and Short-Landing Characteristics (1933)
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torily, it is known that at least one airplane, the McDonnell entry to the Guggenheim safe-airplane contest, has been repeatedly landed at vertical veloci- ties up to about 20 feet per second without difficulty. It can therefore be assumed that with careful design the landing-gear problem will not… … Figure 3.—The Verville AT airplane with the full limited control in use are much shorter In this connection, each of the airplanes tested had than the distances required for the shortest conven- an attitude in the "landing glide" with which a satis- tional-type landings. Thus it seems likely that…
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