Trisonic Tests of the Multi-Swept DLR-F22 Configuration with Different Wing Planforms

Abstract

The effect of different wing planforms on the aerodynamic behavior of the DLR-F22 multi-swept delta-wing configuration was investigated in the transonic wind tunnel DNWTWG under conditions ranging from subsonic to supersonic flows. To this end, the DLRF22 model was tested in its baseline version and with four additional multi-swept wing planforms differing in LEVCON span and strake length. In separate wind tunnel entries both, the integral forces and moments, and the pressures on the leeward side of the model were determined. The test conditions were chosen to duplicate each other so that the results could be directly compared with each other. The Mach numbers considered were between M = 0.50 – 2.00 and the angle of attack, α, was varied in the range of 0° ≤ α ≤ 30°, mostly at 0° and 5° sideslip. In addition, the angle of sideslip, β, was varied at constant angles of attack up to β = ±10°. The Reynolds number, that was not explicitly changed, was in the range 1.75 – 2.45∙10^6, depending on the Mach number. Results are reviewed and discussed.