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![]() "Gary Nuttall" wrote in message ... And keep a note of how much fuel the tug has on board. How heavy the glider pilot is. How clean the glider wings are. What time of day it was. Outside Air Temperature, pressure and moisture content. Local CAPE and Lifted Index. Length of rope (and its elasticity). Power setting of tug. What mood each of the pilots were in. Stick position on ground run. Local thermal and wave activity. All can have an effect on take-off distance and climb rate. There's so many variables that I'd be dubious of any metrics developed beyond the fact that high altitude, high temperature and heavy gliders do not make a good combination. Anybody who comes up with a set of explicit numbers and sticks to them is likely to discover how often theory doesn't work in practice! Happy soaring Gary Nuttall Continues to amaze me at how much disdain glider pilots have for quantitation. I suppose that may be what draws some of them into the soaring in the first place. I also enjoy that aspect but think that attitude has gotten many powered pilots into bad situations. To think that we are immune to it because we don't have engines is naive. Casey |
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