Matronics Email Lists :: View topic - pant and fairings on mains

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

pant and fairings on mains

Matronics Email Lists Forum Index -> Lightning-List

View previous topic :: View next topic

Author Message

wb2ssj(at)frontiernet.net
Guest

Posted: Fri Mar 06, 2009 5:35 am Post subject: pant and fairings on mains

Nick or Mark,

 I have been looking at the wheel pant and  fairings and how they are mounted. When the wheel is on the ground the angle and  caster is one thing, but when in the air and they hang down is another. We  wouuld want the pants and fairings straight as we are flying for the least  amount drag. How has this being done ?  Tex

   [quote][b]

- The Matronics Lightning-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Lightning-List

N1BZRich(at)aol.com
Guest

Posted: Fri Mar 06, 2009 6:06 am Post subject: pant and fairings on mains

Tex, 

     If you don't mind, let me make a comment.  The  angle will change, but the alignment with the relative wind should not.  So  where is the drag increase?  Does a rain drop have more drag if it is  rotated slightly?  The key is to align the gear leg fainings and wheel  pants with the relative wind for least drag.  For the pants, that alignment  should be in both the "pitch" axis and the "yaw" axis. Roll should not  matter for that "rain drop" wheel pant.  

 Blue Skies,

 Buz

 Need a job? Find employment help in your area.

  [quote][b]

- The Matronics Lightning-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Lightning-List

Bill Strahan

Joined: 20 Aug 2008
Posts: 145

Posted: Fri Mar 06, 2009 3:20 pm Post subject: Re: pant and fairings on mains

I don't think he's referring to roll, so much as pitch.  Obviously, the roll angle doesn't really affect these things.



I would say figure out what the attitude of the plane is in max throttle level flight.  Hopefully that will be the speed in cruise with the pants, so that is the angle to shoot to duplicate.  Measure the angle on a repeatable point...perhaps the center console?  There are nice digital tools for measuring that angle.



Then, jack the plane up so the gear is free to assume the same position it would in flight, and mount the wheel pants so they are level in that attitude.  For the main gear fairings, they also need zero yaw relative to the airframe, but I would assume the nose pant would self-center to some extent.

- The Matronics Lightning-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Lightning-List

Display posts from previous:

	Matronics Email Lists Forum Index -> Lightning-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum