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In rec.aviation.piloting Kev wrote:
On Apr 16, 11:15 am, "Maxwell" wrote: "Kev" wrote in message It's going to take about 30 seconds to fly a 360 steep turn at 100kts. My wake _should_ descend about 150' during that time (300 fpm). I can't imagine a C172 wake being tall enough to stay in my way unless something else is ocurring (me descending, or the wake staying up). I am certainly no expert on the subject, but I think most of the data on wake turbulence comes from studies held at or very near the ground. My searches on the web show the opposite... or at least that there's studies both at altitude and near the ground. For examples: http://www.nasa.gov/centers/dryden/a...4-14-DFRC.html ||||| "NASA research has shown that as large aircraft move through the air, ||||| trailing vortices tend to remain spaced less than a wingspan apart while sinking at a rate of several hundred feet per minute. Over time, the sink rate will slow and their strength will taper off. Research has shown, however, that vortices can also rise during conditions of ambient thermal lifting." "Aircraft Accident Reconstruction and Litigation" By M. P. Papadakis, Barnes Warnock MacCormick, states that vortices descend 5-10 fps (30-600 fpm). Where's the data for C172 sized aircraft? People are assuming numbers for a specific type of aircraft are applicable to very different aircraft. I see no justification for this. snip rest -- Jim Pennino Remove .spam.sux to reply. |
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![]() "Mxsmanic" wrote in message ... writes: Where's the data for C172 sized aircraft? Small aircraft work the same way, since they have wings that work the same way. People are assuming numbers for a specific type of aircraft are applicable to very different aircraft. These facts are applicable to all fixed-wing aircraft. I see no justification for this. You're assuming a difference where no evidence for a difference exists. Priceless!!! You are dead wrong again. |
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In rec.aviation.piloting Mxsmanic wrote:
writes: Where's the data for C172 sized aircraft? Small aircraft work the same way, since they have wings that work the same way. People are assuming numbers for a specific type of aircraft are applicable to very different aircraft. These facts are applicable to all fixed-wing aircraft. I see no justification for this. You're assuming a difference where no evidence for a difference exists. Yes, you are quite correct; there is no differece between a 747 and a C172 in the Microsoft Flight Simulator game. -- Jim Pennino Remove .spam.sux to reply. |
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