Today's Message Index:
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1. 05:35 AM - pant and fairings on mains (Tex Mantell)
2. 06:06 AM - Re: pant and fairings on mains (N1BZRich@aol.com)
3. 03:21 PM - Re: pant and fairings on mains (Bill Strahan)
Message 1
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| 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
Message 2
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| Subject: | Re: 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
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Message 3
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| 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.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=233530#233530
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