Date: 09 Sep 98 04:12:35 From: Richard Rea <email@example.com> Organization: ArosNet Internet Services References: 1
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Andrew Goldfinger wrote in message ... >Recently, at IAD I saw a display of a Junkers Trimotor Airliner (IIRC it >was the Ju52, or some similar designation). It had one rotary engine on >the nose, and one on each wing. The wing mounted engines appeared to be >canted slightly outwards. Does anyone know why this was done? I >speculate that it may have been to make the effective thrust vectors of >the engines go through the center of mass, and therefore improve engine >out performance. If so, why is this not done with modern airplanes? The Ju52 was originally a twin-engined passenger airplane, and when the third engine was put on the nose it became the Ju52-3M. BMW made the radial engines used. As for splaying the engines outward it may be to improve engine-out performance (I have heard conflicting, anecdotal reports of the early BMW radial engines not being very reliable). What I remember most about the Ju52-3M was that it was a very rugged airplane. There was a story about flying a Ju52-3M low through the jungle (Africa?) with the wings cutting through the trees, undergrowth, etc., creating a makeshift landing strip.