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#1
October 21st 06, 04:33 PM
posted to rec.aviation.ifr
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Percent power altitude
Anyone tell me at what altitude I get 75% and 65% power respctively
(with full throttle, normally aspirated). 
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#2
October 21st 06, 06:00 PM
posted to rec.aviation.ifr
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Percent power altitude
You don't have a POH?
On 10/21/2006 10:33 AM, Doug wrote the following: Anyone tell me at what altitude I get 75% and 65% power respctively (with full throttle, normally aspirated).
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#3
October 21st 06, 06:42 PM
posted to rec.aviation.ifr
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Percent power altitude
Doug wrote
Anyone tell me at what altitude I get 75% and 65% power respctively (with full throttle, normally aspirated). See the graph at: http://www.kellyaerospace.com/articl...bocharging.pdf Bob Moore
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#4
October 21st 06, 06:46 PM
posted to rec.aviation.ifr
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Percent power altitude
Mitty wrote
You don't have a POH? You know, he might not even have an airplane. He just asked a question and expected an answer, not a wise crack. No POH required, answer is not aircraft specific, see: http://www.kellyaerospace.com/articl...bocharging.pdf Bob Moore
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#5
October 21st 06, 08:01 PM
posted to rec.aviation.ifr
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Percent power altitude
In article .com,
"Doug" wrote: Anyone tell me at what altitude I get 75% and 65% power respctively (with full throttle, normally aspirated). Depends on the engine, depends on the OAT (density altitude).
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#6
October 21st 06, 08:10 PM
posted to rec.aviation.ifr
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Percent power altitude
john smith wrote
Depends on the engine, depends on the OAT (density altitude). Not on the engine as long as it's "normally aspirated' as specified in the OP. Bob Moore
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#7
October 21st 06, 10:16 PM
posted to rec.aviation.ifr
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Percent power altitude
5 and 7 thousand
"Doug" wrote in message oups.com... | Anyone tell me at what altitude I get 75% and 65% power respctively | (with full throttle, normally aspirated). |
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#8
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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#9
October 22nd 06, 01:06 AM
posted to rec.aviation.ifr
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Percent power altitude
In article ,
Bob Moore wrote: 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. OK, I'm confused. Full throttle, 64%, is 12,500' for any engine? How come my cherokee 140 couldn't even get to 12,500'? What am I overlooking? -- Bob Noel Looking for a sig the lawyers will hate
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#10
October 22nd 06, 01:26 AM
posted to rec.aviation.ifr
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Percent power altitude
Bob Noel wrote
Bob Moore wrote: Works out to 76% at 7,500' and 64% at 12,500', or thereabouts. OK, I'm confused. Full throttle, 64%, is 12,500' for any engine? How come my cherokee 140 couldn't even get to 12,500'? What am I overlooking? :-) The wing, of course. :-) Bob Moore
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