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Wind-tunnel investigation of control-surface characteristics XVIII : a linked overhang aerodynamic balance

Robert B Liddell

Abstract

Report presenting wind-tunnel testing in two-dimensional flow to investigate the aerodynamic characteristics of a flap balanced by a large overhang linked to deflect more slowly than the flap. Three lengths of blunt-nose overhang were tested linked to a 0.30-airfoil-chord straight-contour flap on an NACA 66-009 airfoil. Results regarding lift, hinge moment, drag, pitching moment, and practical considerations are provided.

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Available abstract

Key concepts: Airfoil, Pitching moment, Wind tunnel, Chord (peer-to-peer), Aerodynamics, Angle of attack, Drag, Structural engineering