3 Answers
RPM and boost
Asked by: eaglectl@yahoo.com 3863 views Aerodynamics, Aircraft Systems, General Aviation
CFI quoting a poorly-done old POH, or perhaps
just regurgitating what his CFI taught him -- has told you that the first power reduction after
takeoff should be to 25 inches and 2,500 RPM. Leaving aside the issue of whether this is really a
good procedure, let's assume you take off and dutifully pull the throttle back from about 29
inches, to exactly 25 inches. Then you pull the prop control back from 2,700 to 2,500.you are
surprised to see the MP rise to 26 inches or so as the RPM comes down. please explain the phenomena behind it
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