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#20
July 5th 15, 09:55 PM
posted to rec.aviation.soaring
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Use of ridge lift for tow - review of procedure/protocol
On Friday, July 3, 2015 at 6:01:02 PM UTC+3, Dan Marotta wrote:
There was an article in Soaring back in the 80s, I believe, which discussed rope tension during tow.* It's not very much for a glass glider (20 lb) and I wouldn't think more than 40 lb. or so for a drag master (2-33).* There's no harm in releasing at that tension.* On a cross-country tow, yes. Not when climbing at 700 fpm at 70 knots! Then you've got to add 1/10th of the glider weight from the climb to the 1/40th of the glider weight from the drag. i.e. more like 100 lb tension than 20 lb (for a modern single seater with a bit of water) 
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