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Old 05-28-2013, 06:07 PM   #539 (permalink)
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Originally Posted by Frank Lee View Post
I was thinking of the old Clark Y from 1922:

What does the 20% Clark look like overlayed?
Frank,Al printed your image for me and then I enlarged it,along with an image -reverse.
Joining them up in mirror-image they create the contour of a streamline body of revolution of L/D= about 2.617 which would be separation-free as a half-body near the ground.It would have Cd 0.08,allowing for ground proximity,and sides tapered and rolled like a Spitfire wingtip.
I like it.And it doesn't have my 'bumpy' lines!
Hucho might say it's a smidge long,but if one were to to use this contour it would hardly make for any regrets.
PS I meant 20%,not 29%.The edit feature does not allow for correcting it.Sorry for confusion.
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Last edited by aerohead; 05-28-2013 at 06:09 PM.. Reason: number correction
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