A further case for variable geometry

W.A.T. Fritz Johl

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A further case for variable geometry

机译：可变几何的另一种情况

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Today, all sailplanes in any particular class look and perform more or less the same. This gives credence to the view that the necessary compromises in design and sailplane technology have reached a limit. Sailplane development is on a sort of plateau. Further, apart from perhaps boundary-layer control (BLC), there appears to be nothing in the foreseeable future that promises any significant improvement in performance. It is the purpose of this paper to, once again, encourage interest in Variable Geometry (VG) and address the controversies which prevailed in abundance during the 1970s and which apparently still survive today.

机译：如今，任何特定级别的所有滑翔机的外观和性能大致相同。这证明了在设计和水上飞机技术上的必要折衷已经达到极限的观点。 Sailplane的发展处于平稳阶段。此外，除了边界层控制（BLC）之外，在可预见的将来似乎没有任何东西可以保证性能上的任何显着改善。本文的目的是再次激发人们对可变几何（VG）的兴趣，并解决在1970年代盛行并至今仍然存在的争议。

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《The Aeronautical Journal》 |2012年第1175期|p.23-44|共22页
作者
W.A.T. Fritz Johl;
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W: all up weight (kg); S: wing area (m~2); b: wing span (m); W/S: wing loading (kg/m~2); W/b: span loading (kg/m); et al;

机译：W：全部体重（kg）;S：机翼面积（m〜2）;b：翼展（米）;W / S：机翼载荷（kg / m〜2）;W / b：跨度载荷（kg / m）;等;

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A further case for variable geometry

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