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ACRO E-mail Archive Thread: [IAC] two blade vs 3-blade prop

Thread: [IAC] two blade vs 3-blade prop

Message: [IAC] two blade vs 3-blade prop

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From: ULIBENNING at t-online.de (Uli Benning)

Date: Fri, 10 Nov 2000 06:55:37 UTC

Message:

  We tested exactly the difference between the two propellers by technical
measurements:
Top level speed is the same
Vertical penetration is near the same,3-blade prop is a little better due more 
thrust at low speed.
Weight is the same.
3-blade prop reduces definitly the stress on the crankshaft.
Flying Adv. figures,the most advantage is the acceleration out of slow parts
of aerobatic figures. 
On downlines you have more time for rolls due more drag=slower acceleration. 
Uli Benning German Aerobatic Team

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