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We know how to recognize a thermaling glider from far off. But the glider
can disappear during two parts of the circle even when we know where to look. And the jet jock probably does not know what to look for or to understand the significance of what (s)he sees. A thermalling glider has a moving blind spot that may be 15 seconds or more. Not much-but how much distance can a bizjet cover in 15 seconds? Remember to increase the TAS (and thus GS) by 2% per thousand feet over and above the IAS.---The jet can go from a speck to very big in that distance. -- Hartley Falbaum DG800B "KF" USA "Eric Greenwell" wrote in message news:Zn6Jg.3900$nR2.1435@trnddc03... kirk.stant wrote: Hmm, the glider is thermalling - probably the easiest thing in the air to see from another aircraft approaching. A thermalling glider should be able to see approaching aircraft more easily, too. Quite different from being run down by a faster aircraft coming up behind. We probably shouldn't be too smug at this point, until we know the facts for sure. -- Change "netto" to "net" to email me directly Eric Greenwell - Washington State, USA www.motorglider.org - Download "A Guide to Self-launching Sailplane Operation" |
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