1954•Unpublished venueRequires access

Effects of Rigid Spoilers on the Two-dimensional Flutter Derivatives of Airfoils Oscillating in Pitch at High Subsonic Speeds

James C Monfort, John A Wyss

Abstract

Report presenting a study of the effects of spoilers with fixed heights equal to 2.5 to 4 percent of the airfoil chord on the aerodynamic lift and moment flutter derivatives of oscillating two-dimensional airfoils. Results regarding the typical effects of spoiler deflection, effects of Mach number, and aerodynamic torsional instability boundaries for fixed spoiler heights as affected by airfoil profile are provided.

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Key concepts: Airfoil, Flutter, Aerodynamics, Chord (peer-to-peer), Transonic, Mach number, Pitching moment, Aerodynamic center