Wayne Paul wrote:

..... For example, a Schreder HP-14's
40:1 glide ratio is decreased to 2:1 when the flaps are lowered to 90
degrees.

Wow! That's an amazing change.

...This gives an approach angle of 30 degrees which requires the nose
to be 45 degrees below the horizon.

I think you've got this a little backwards - if the approach angle is 30
degrees, the nose can't be BELOW that - you'd have a negative angle of
attack. I think that the nose would be somewhere in the 20 degree down
range, to provide a positive AOA of somewhere around 10 degrees. 20
degrees nose down is VERY down, however - it would certainly LOOK like
you're pointing straight down.....

--
Marc J. Zeitlin
http://marc.zeitlin.home.comcast.net/
http://www.cozybuilders.org/
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