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#1
April 1st 05, 12:47 AM
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Nice looking rake Ian.
It appears to be per the Althaus drawing? Jmi Ian Molesworth wrote: Thanks Wayne,Jim I am already aware of Johnson articles and Althaus's improved version. Neither article actually discusses any of the maths behind the design and positioning of a rake. I'm looking for a little more detail. I have a prototype rake I built and I'll be testing its operation this weekend. www.internationalsoaring.org/dragrake1.htm Regards Ian 
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#2
April 1st 05, 06:01 AM
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Pretty much.
2 * 10 pitots each over a 33mm span with a 'missing' tube a the midpoint. Gives the rake a 75mm span. The plenum chambers are seperate on each side of the wing and averaged by a tube running down the rear edge of the chamber. Ian
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#3
April 1st 05, 03:17 PM
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Do you intend to use it to find the optimum flap position?
Bob "nimbusgb" wrote in message oups.com... Pretty much. 2 * 10 pitots each over a 33mm span with a 'missing' tube a the midpoint. Gives the rake a 75mm span. The plenum chambers are seperate on each side of the wing and averaged by a tube running down the rear edge of the chamber. Ian
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#4
April 1st 05, 06:36 PM
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Yes, thats the general idea.
Ian
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