A full-span subscale force-test model of the Gulfstream Peregrine design is shown mounted to the forced-oscillation test apparatus in the Full-Scale Tunnel to determine the effects of leading-edge modifications on aerodynamic damping in roll for angles of attack near stall. The orange segments along the wing leading edges are discontinuous, drooped airfoil segments. The test setup is typical of that used to measure roll damping on free-flight-size models. (NASA L-84-10439)
Unknown author<span style="display: none;">Unknown author</span>
2019-07-16
<a href="//commons.wikimedia.org/wiki/File:Cave_of_the_Winds.pdf" class="image"><img alt="Cave of the Winds.pdf" src="https://upload.wikimedia.org/wikipedia/commons/thumb/7/7c/Cave_of_the_Winds.pdf/page1-1275px-Cave_of_the_Winds.pdf.jpg" decoding="async" width="1275" height="1650" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/7/7c/Cave_of_the_Winds.pdf/page1-1913px-Cave_of_the_Winds.pdf.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/7/7c/Cave_of_the_Winds.pdf/page1-2550px-Cave_of_the_Winds.pdf.jpg 2x" data-file-width="1275" data-file-height="1650"></a>