Brian,
I'm sure that William Mills will give you chapter-and-verse.
But can you publish here your performance figures (including fuel burn
if available) plus geometry of prop (diameter and twist distribution).
I have a number of figures collected over the years from details that
have been published by others. I'll dig them out, but they don't relate
specifically to variable pitch props.
Duncan McF.
----- Original Message -----
From: Brian and Pat Tarmar
To: europa-list@matronics.com
Sent: Thursday, February 08, 2007 8:09 PM
Subject: Europa-List: Trigear 912s Performance Figures
Having just completed the test flying programme for PFA approval with
a Woodcomp "Varia" 1700mm mechanically adjustable VP propeller on my
Trigear with Rotax 912S, I would be very interested to hear some
performance figures for other types of VP and constant speed propellers
(no bull**** please!), so that comparisons can be made. I have this
prop on sale or return from the UK agent, so can go to another model if
necessary. The Woodcomp "Varia" has 2 scimitar blades and is adjusted
by means of a simple cable arrangement in the cockpit and weighs no more
than the Warpdrive it replaces. So far we are very pleased with the
smoothe and quiet operation, an increase of 10 knots in cruising speed
and better take-off performance - but how does it match the more exotic
beasts? I hope you can assist.
Brian Tarmar G-OBJT Classic with 912S XS firewall forward
I choose Polesoft Lockspam to fight spam, and you?
http://www.polesoft.com/refer.html
|