REFLECTOR: Ailerons
cgputney at peoplepc.com
cgputney at peoplepc.com
Mon Mar 26 11:02:08 CDT 2007
Thank you Scott,
Yes, all those things were addressed during the flight test period.
None reduced the forces.
Some current Velocities have a flat aileron underside, and manageable forces.
This is exactly what happened in the Seawind test program decades ago The highly cambered airfoil used resulted in high roll forces.
So, the question remains, how do I best repair these ailerons?
Thanks again for your response.
----- Original Message -----
From: Scott Derrick
To: Velocity Aircraft Owners and Builders list
Sent: Monday, March 26, 2007 10:25 AM
Subject: Re: REFLECTOR: Ailerons
Gordon,
Some of the items below may seem stupid but I'll list them anyway.
1.) Ailerons are even when nuetral.
2.) When the ailerons are neutral, the center bellcrank is vertical
3.) almost no play between ailerons.
4.) at least standard up and down movement per plans.
5.) When ailerons are nuetral, plane on the ground, they both should be up about 1/8 inch relative to the trailing edge of the wing. In flight pressure will push them even with the trailing edge.
The ailerons will need progressively more lbs of input to move them as your speed increases, this is a natural built in feedback system that prevents you from over controlling. You should still be able to easily roll the airplane to 60/90 degrees at any speed.
Anybody done a test to see how much force is required to roll the airplane at faster and faster speeds, using a fish scale or something?
Scott
cgputney at peoplepc.com wrote:
My flight test program revealed "heavy ailerons". Movable at pattern speeds, but next to impossible at 140kts. After exchanges with Danny Maher, Scott Jones, Steve Murphree, and old Seawind newletters I decided to fill the (per plans) concave undersides with Superfil and rebalance. The required nose weights reduced aileron travel below the 2.5" so I am considering rebuilding them lighter. Any recommendations out there? Gordon Putney.
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