Re: Cat. 1 and & 2 glider weights (wings)?

From: Bill Gowen <wdgowen_at_earthlink.net>
Date: Sat, 25 Feb 2006 11:49:18 -0500

FWIW

Chris and I went to the Emory University gym this morning to do glider testing. The wind from the A/C was so strong that flight times were meaningless, but there was some useful info gathered. The bottom of the concrete beams at Emory are 35' up. I was able to get within about a foot of them with my light Cat 1 SCLG which weighs somewhere around 1.5g. My 2.2g glider wasn't working hard to get to the bottom of the beams, so I still don't know how high that one will go. I don't remember what my standard wings weigh but I think it's about 1g for the light one and 1.5 for the heavier one

My 7g unlimited would get a couple of feet from the bottom of the beams on 2 strands of .090ish rubber. My pull tab broke when I tried to go to 4 strands. This glider has a 1/16" wing and didn't seem to be unhappy about what was being asked of it.

Chris ballasted his big unlimited and was able to get close to the beams. He still had a very impressive sink rate even with the ballast.

.
  ----- Original Message -----
  From: Bruce McCrory
  To: Indoor_Construction_at_yahoogroups.com
  Sent: Saturday, February 25, 2006 11:19 AM
  Subject: [Indoor_Construction] Cat. 1 and & 2 glider weights (wings)?


  I'm finding a bit of confusion with what the wing weights and ultimate
  model weights should be for various gliders I'll be testing soon.

  My targets for wing weights have been about 1 gram for a Cat. 1 (25-
  26') ceiling; and for the Cat. 2 ceiling there seems to be some
  conflict in "ideal" wing weight.

  The Cat. 2 ceiling is 37'. It sounds like most of the numbers for
  weights I've seen on this list are for sites of slightly over Cat. 1
  max. Or, are you guys pushing the minimum weight and not reaching full
  height?

  Second, can fuse weight compensate for somewhat light wing to get
  higher altitude?

  Thanks,
  Bruce
  (with a half-dozen wings and fuses... Which to which?)






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Received on Sat Feb 25 2006 - 08:49:21 CET