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#9
October 22nd 06, 12:50 AM
posted to rec.aviation.ifr
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Percent power altitude
Jim Macklin wrote
5 and 7 thousand Running on (faulty) memory again, Jim? How about 7,500' and about 12,500', ISA of course. See my previous replies to this thread for a real chart answer. The formula answer is: bhp at altitude equals bhp at sea level times the quantity (density ratio minus the quantity(1 minus density ratio divided by 7.55)) Works out to 76% at 7,500' and 64% at 12,500', or thereabouts. Bad information is worse than no information at all. Bob Moore 
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