RDS aileron Drive

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Arthur Fielding
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RDS aileron Drive

Postby Arthur Fielding » December 18th, 2016, 7:38 pm

Hi
I had been looking at the Spitfire build on this site and noticed the pictures of the servo drive to the aileron (a RDS system is used) I had not seen this before ,so whilst waiting for glue to dry, I turned up the parts and made a working system.
My question is, taken that torque is force x distance how with the drive coming from the centre of the servo ( giving zero distance in the equation ) do I work out servo torque ?
Thanks for your time
Happy Christmas
Arthur

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Rob Buckley
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Re: RDS aileron Drive

Postby Rob Buckley » December 19th, 2016, 8:24 am

Arthur,start by assuming that the servo torque is applied as a point load at the furthest point from the axis of rotation where the outside edge of the 'box' in the aileron touches the drive rod.
LMA Secretary - I've got a reasonable idea where you live!

Cary Bailey
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Re: RDS aileron Drive

Postby Cary Bailey » December 19th, 2016, 2:41 pm

Rob, does the torque not increase in value the closer the axis of rotation?
Cary

Barrie King
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Re: RDS aileron Drive

Postby Barrie King » December 19th, 2016, 8:55 pm

Cary, I think the torque is constant but the force increases as the distance decreases, and of course visa versa.

Barrie

Cary Bailey
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Location: Stoke On Trent
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Re: RDS aileron Drive

Postby Cary Bailey » January 13th, 2017, 9:32 am

Barrie, I knew it was something like that! Thanks for the info!
Cary


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