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Airfoil for Quickie 40 or other speed plane?

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Airfoil for Quickie 40 or other speed plane?

Old 01-28-2003, 05:16 AM
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Default Airfoil for Quickie 40 or other speed plane?

I'm designing a plane now and am designing it around my Jett FIRE .50. I've had this engine on a Diamond Dust for a couple years and the plane is getting kind of ragged! Anyways, my plane has a 42" wingspan and is 48" long. Obviously with the engine I'm using, I'm looking for something fast. I was thinking about using a NACA 0008 airfoil, but was curious if there is aything I could use that would be even faster? Thanks for any info! Matt
Old 01-28-2003, 05:28 AM
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Default Airfoil for Quickie 40 or other speed plane?

Here's what a lot of Qucikie 500 racers use:

http://www.aae.uiuc.edu/m-selig/ads/afplots/r140sm.gif

Website full of airfoils:
http://www.aae.uiuc.edu/m-selig/ads/coord_database.html
Old 01-28-2003, 07:55 AM
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Default Airfoil for Quickie 40 or other speed plane?

I talked a local racer into using a low camber sailplane airfoil on one of his designs. He was quite happy with it and said that it definetley gave a better turn with less speed loss.

If you just want to go fast then by all means use a symetrical 'foil. But if you want to race and pull lots of G's then something with a drag bucket that starts at a lift coefficient of 0 is a better bet. The bucket extending just down to Cl=0 ensures that the drag will be minimal at the very low straightaway lift requirements but you'll be way better off in the turns.

Something like an HN1033 or some of the pylon specific Martin Hepperle 'foils. I don't remember the numbers but they are on his site at.....

http://www.mh-aerotools.de/airfoils/index.htm

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