Grey, C. G. (Charles Grey), 1875-1953 · London, "The Aero" · leaf 69
at thesame time till, at the bottom of a long section (or deep)plane, the lower strata are simply diving into very resilientcushions of slightly compressed air, which already have?arapid motion outwards and downwards past the rear, orlower, edge of the plane, and so these lower currents dovery… … Now, obviously, as the angle increases, as in fig. c, thewind currents will strike a more glancing blow and willglide off more easily. The first stratum will thus havea still greater advantage over the lower strata, which bythis time are doing next to nothing in the way of support-ing the plane.…
Airplanes
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