Subject: Extended PSRU
From: ACRE
Date: 7/14/2003, 4:22 PM


Vance W Jaqua wrote:

This is where a reduction drive with offset from the engine centerline
provides a benefit, Each inch of offset buys you two inches of prop
diameter. - (Gee! would this make an EZ in side profile look like
the famous BD5?)   :)   - Vance

Good idea. Get one of Ken's tried and true 3:1 cog belt reduction units and have
Ken lengthen the output shaft by about a foot. Ken could use something like this four
inch output shaft without the planetary to stiffen the output shaft in torsion.

That will make one hell of a pusher PSRU. Could help with the prop-in-wing-wake
problem.

Paul Lamar


At this time the EZ's and the like have no pitch change under power, one of the really bad characteristics of the 'viggen, which
I believed lead to more than one crash.
Canards are very pitch sensetive to begin with. If moving the C/L of the engine up to use a bigger prop or get more ground
clearance was a no brainer they'd all be doing it anyway.
...Chrissi

You can't extend the gear and you can't raise the thrust line so Burt
has designed you into a box.

Well you will just have to bear the canard cross then.

Paul Lamar
 
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