Re: SO stuff

From: Bill Gowen <b.gowen_at_earthlink.net>
Date: Mon, 16 Oct 2006 13:17:25 -0400

I'm impressed! The only way I can calculate the angle for a can formed prop is to use one of Fred Rash's programs.

  ----- Original Message -----
  From: wombat_eagle
  To: Indoor_Construction_at_yahoogroups.com
  Sent: Monday, October 16, 2006 12:47 PM
  Subject: [Indoor_Construction] SO stuff


  Sorry if this comes thru twice, my confuser acted up.

  My engineeering group is building "little squares", they should have
  the flying surfaces done tomorrow. We're using a 6% simplex airfoil.

  Gee, I feel for the 40 + foot ceiling problem, we're flying in a 22 ft
  gym with llittle tornados under the ceiling vents strong enough that
  they can blow the plane to the floor from 20 ft up.

  As part of the course, they are having to design their own props using
  cottage cheese cartons or sheet plastic formed on a tincan in an oven.
  They will have to calcualte tilt angle to get an approx helical
  pitch, then mount with bamboo spars fitted toa bit of plastic stir
  stick for the hub with the shaft running in a wire pigtail. Poor
  kids. (:_")

  I'm thinking of building a static thrust gage, any ideas or thoughts ?

  wombat



   

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Received on Mon Oct 16 2006 - 10:23:48 CEST