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q horsepower

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Euro-Motors

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Apr 28, 2008, 3:47:23 AM4/28/08
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Is the horsepower the same from an airplane as like from a
motorcycle?
if yes i wonder why airplane engines are still so big to
produce 100 hp against 100 horsepoer from a motorcyle
regards
willy


NoSpam

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Apr 28, 2008, 6:04:39 AM4/28/08
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Un-geared aircraft engines turn the prop directly so the prop tip speed
becomes the limiting factor. The tip of a 6 foot prop turning at 2700RPM
is travelling at about 580mph. To get the power at low RPM you need a
big engine (or a gearbox).

Dave

neha

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May 18, 2008, 7:25:13 PM5/18/08
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Horse power from big cubic inches is very reliable horse power, horse
power from high RPM is a bit more fickle.
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