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Differences between automotive & airplane engines
"Alan Baker" wrote in message ... In article .com, wrote: I don't know. But whatever rotational speed it turns at, you can convert that into any other rotational speed and still be getting 40 hp. You can't say the same about torque. Right. Horsepower is equal to torque multiplied by RPM times a constant. For any given horsepower if torque goes up the RPM must go down and vice versa. Of course, if you know any two of HP, torque, or RPM you can easily find the third. Gearing adds weight and wear points. However, many aircraft engines have been geared. It does get a little tricky, since the prop serves as the flywheel, so you are putting your gears inbetween the crankshaft and the flywheel. That is not a good place for gears if you hope for reasonable service life! Highflyer Highflight Aviation Services Pinckneyville Airport ( PJY ) |
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