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#1
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relative climb performance
Q. All the gliders below join the same thermal at
2000 feet. In which order will they reach 5000 feet. Discuss. LS7 Discus ASW19 DG300 Libelle ASW20 LS6 John |
#2
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Depends a lot on the nature of the thermal. Weak, crummy, narrow and
turbolent ones favor some gliders while strong, wide & steady ones favor other types. -And then, of course, it depends on the wing loading, some types are good climbers at other wing loading ranges than others. - Actually, the above is just useless theory. In the real World, the Libelle always climbs better than anything you can throw at it ;-) /Lars Peder wrote in message ... Q. All the gliders below join the same thermal at 2000 feet. In which order will they reach 5000 feet. Discuss. LS7 Discus ASW19 DG300 Libelle ASW20 LS6 John |
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#4
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Thanks Eric !
But I've switched brands... |
#5
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To have any meaningful discussion you'll need to specify the wing
loading, the thermal strength, and the characteristics of the thermal (big, smooth, small, turbulent etc.). Without that input I'd assume that the glider with the lowest wing loading and slowest stall speed will win. Is that the Libelle? On the other hand I often outclimbed lighter loaded Libelles with my ASW 19. In tight and/or broken thermals pilot technique can override the differences in gliders. Andy |
#6
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OK, assume standard British 2 knot thermals. Gliders
have no water in. Thermals are small but smooth. Reason for the question....I can get L info off the net, but not climb data... John At 18:36 14 September 2005, Andy wrote: To have any meaningful discussion you'll need to specify the wing loading, the thermal strength, and the characteristics of the thermal (big, smooth, small, turbulent etc.). Without that input I'd assume that the glider with the lowest wing loading and slowest stall speed will win. Is that the Libelle? On the other hand I often outclimbed lighter loaded Libelles with my ASW 19. In tight and/or broken thermals pilot technique can override the differences in gliders. Andy |
#7
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Minimum sink speed and minimum sink rate should provide some clues.
That data should be available. The stronger the thermal the more pilot technique overrides small difference in glider sink. In large weak thermals almost nothing will prevent the lower sink rate glider climbing better and topping out higher. That effect is obvous, and frustrating to the low pilot, at contest pre-start gaggles when the max start height is greater than top of lift. Andy |
#8
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Q. All the gliders below join the same thermal at
2000 feet. In which order will they reach 5000 feet. The one being flown by the pilot who considers it "their thermal." |
#9
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to have a REALLY meaningful discussion you should have added a pilot
name next to each ship. BJS |
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