Test Summary of the NASA High-Lift Common Research Model Half-Span at QinetiQ 5-Metre Pressurized Low-Speed Wind Tunnel

Abstract

A summary and selected results from experimental testing of the NASA 10% scale semi-span High-Lift Common Research Model (CRM-HL) at the QinetiQ 5m pressurized low-speed wind tunnel (5mWT) are presented. There were many objectives of this test, the primary being to collect data to define a set of reference landing and takeoff configurations for dissemination and use within the CRM-HL ecosystem. A database of force, moment, pressure and surface flow visualization data were collected to support several objectives: aerodynamic sensitivity to high-lift device positioning, Reynolds number effects on configuration selection, isolation of the effects of various components of the reference configuration (e.g. landing gear, nacelle, horizontal tail, etc.), and limited repeatability data for uncertainty quantification assessment. Some results were compared to data collected at the NASA Langley Research Center 14x22 Foot wind tunnel to assess half-model effects and facility differences. Half-model effects were further studied with the use of wind tunnel floor blowing to change the boundary layer profile and assess the effects on model aerodynamics. Flow visualization data were gathered with fluorescent mini-tufts and UV oil. Finally, initial demonstration and development of new Particle Image Velocimetry (PIV) and Model Deformation Measurement (MDM) capabilities at the 5mWT facility were performed.