prop efficiency

From: <Warthodson_at_aol.com>
Date: Tue, 11 Feb 2014 14:53:51 -0500 (EST)

Assuming a helical fixed pitch indoor free flight prop:

1. How does prop efficiency vary as a function of prop RPM?
I.E. Is a prop more efficient during high torque launch, climb, cruise or decent?

2. Is possible to explain in simple terms how prop efficiency is affected by pitch?
I.E. At a given RPM is there an optimum pitch? Or do I need to be more specific?

3. Has it become generally accepted practice to "wash out" a typical indoor prop?

Gary Hodson
  
Received on Tue Feb 11 2014 - 11:53:52 CET