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Old 05-10-2002 | 06:44 PM
  #19  
EddieWeeks
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From: Baton Rouge, LA
Default Rig Crash

Kelly: I like your idea about the bleed air
in fact I like it so much I tested it years ago.
I used 45 psi of shop air, pvc pipe, a gyro and
servo connected to home made valves at the end
of the 5 foot pipe. What I found is 45 psi only
makes a few oz of thrust even with a large
volume of air. Han (AMT engine designer) told
me if you take 1 lb of bleed air you will loose
3 lbs of thrust. The AMT 450 can produce %30
bleed air but at 0.95 lbs/sec mass flow I just
don't think there is enough air to make the 2 lbs
of thrust on each axis, that I think is required
for true control.

Graig: I am very familiar with the Vertigo and
have talked a guy that has flown his many times.
I think the thrust vectoring idea just might work
but I am not going to try it. Putting fins in
a 900 mph air stream, just does not seem like
it would have enough control. I could be wrong
but I like to build things that are over built
and would rather have too much control than not
enough. And I don't care what my plane looks like
as long as it flies right.

Rig #1 biggest problem was controlling the control
(if that makes since) setting the gyro gain, took
a lot of testing.

Eddie Weeks
(one of my favorite pic)
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