Aircraft System Integration
- 1. 5 metre pressurised low-speed wind tunnel • Large size makes accurate modelling of details possible • Pressurisation gives simulation of full-scale conditions for take-off and landing of combat aircraft • Segregation of compressibility and scale effects permits more accurate prediction of full-scale performance of large transport aircraft Landing and take-off performance is of critical importance for both military and civil aircraft. The 5m pressurised low-speed wind tunnel has a simulation capability that is unique in the UK, and it provides high quality data that is of great value to the aerospace industry. A high Reynolds number facility for the investigation of flow physics and the prediction of full-scale performance. The tunnel fan
- 2. For more information please contact: Customer Contact Team QinetiQ Cody Technology Park Ively Road Farnborough Hampshire GU14 0LX United Kingdom Tel +44 (0) 8700 100942 www.QinetiQ.com © Copyright QinetiQ ltd 2002 QINETIQ/FST/CAT/PUB013051 Main characteristics and performance • Test section size: 5m x 4.2m • Speed and Pressure Range: Maximum Mach No 0.34 Maximum Pressure 3 atmospheres • Drive Power: 12 MW continuous • Turbulence level: u1 ≈ 0.08% Test techniques and equipment • Force-Measurements: 6-component underfloor balance or internal strain-gauge balance. • Pressure-Measurements: Solid-state (EPS) multiple pressure measurement. • Flow-visualisation: Fluorescent mini-tufts, surface oil- flow, photographic wake imaging, liquid crystals. • Ground-plane Simulation: False floor height remotely controlled beneath fixed model. • Particle Image Velocimetry (PIV): Non-intrusive laser technique for flowfield investigation. • Balance Calibration Machine: Computer controlled and capable of applying maximum loads to underfloor balances and strain- gauge balances. • Data Acquisition: On-line plots of processed aerodynamic coefficients. Suite of data-processing programmes to suit customer requirements. Model support and force measuring system • Interchangeable cart-mounted models for rapid model change- overs. • Two underfloor balances with rotating turntable for either floor- mounted half-model, or full-model on various strut supports. • Rear sting support with range of available 6-component strain- gauge balances. Alternative stings with range of incidence up to 90°. Roll units for model and for sting to ± l80°. • By permitting depressurisation of the test section only, the 5m wind tunnel enables rapid access for model changes thereby allowing high productivity. It is used for a wide range of tests, including research into the aerodynamics of high-lift systems. helicopters, STOVL aircraft and the development of wind-tunnel techniques. Particle Image Velocimetry (PIV) Picture taken during tests within EEC EUROWAKE programme Civil aircraft testing Helicopter testing Aerial view of wind tunnel IT