Closed-circuit wind tunnel LLF

aeronauticalmodel support

THE LARGE LOW-SPEED FACILITY (LLF) IN MARKNESSE IS AN INDUSTRIAL WIND TUNNEL FOR THE LOW-SPEED DOMAIN. Type of wind tunnel Closed circuit, atmospheric, continuous low-speed wind tunnel with one closed wall and one configurable (slotted) wall test section and an open jet. Click on the picture for an interactive view. - Main Features Remotely controlled sting support system with four degrees of freedom for models with internal balance External six-component balance Floor-based model support system for open jet testing with three degrees of freedom AUXILIARY SYSTEMS Compressed air supply with a capacity of 5 kg/s continuously at 80 bar Vacuum system Moving belt ground plane for ground simulation Microphone traversing system Microphone wall arrays Typical tests Configuration studies, database creation (civil and military transport aircraft, fighters, helicopters, spacecraft, cars and trucks) Engine integration studies with air-powered simulators Turbofan-powered aircraft by means of TPS Propeller-driven aircraft Air exhaust simulation with compressed air Air intake surveys for fighters and helicopters Aeroacoustic and performance testing on rotorcraft models Aeroacoustic testing on full-scale aircraft components (landing gears, wings) Aeroacoustic investigations on scaled turbofans Full-scale cars and trucks (drag and aeroacoustics)