A preliminary analysis of the penalties associated with piercing a wing torsion box with a grid of holes

Report (1959)

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Published Date

31-01-1959

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National Aeronautical Establishment Laboratory Report LR-236

Abstract

This analysis relates to a conventional aircraft that is modified by the addition of fans housed in the wing plane to provide means for vertical take-off and landing. The influence of a grid of holes in the wing torsion box, on top level speed, is inferred by the torsional stiffness criterion for wing divergence. The probable weight penalty incurred in restoring the stiffness to its original, or an intermediate value, is estimated.

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