Mailing List lml@lancaironline.net Message #44459
???: Paul Lipps <elippse@sbcglobal.net>
??????: <marv@lancaironline.net>
?????????: prop drag
??????: Tue, 16 Oct 2007 15:05:32 -0400
???: <lml@lancaironline.net>
The effective pitch of a fixed-pitch prop, in inches, is TAS, mph, times 1056 divided by rpm. Use this at several speeds to get an idea of your EP. Your prop, depending on its area, will be running a CL of about 0.3 to 0.6. , or an AOA of about 3 deg. to 5 deg relative to the zero-lift alpha.  then from this, calculate the rpm you would need in a glide at your best glide speed
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