In the framework of the Design & Development (D&D) Phase of the NH90 helicopter programme, a wind tunnel test project is being carried out using various sub-scale models to determine the aerodynamic behaviour of the vehicle. The NH90 helicopter is being developed in a cooperative programme by four European nations: France, Germany, Italy and The Netherlands. NLR, in close cooperation with DLR and DNW has successfully completed testing of a powered NH90 helicopter model (scale 1:4) in the Large Low speed Facility of the German Dutch Windtunnel DNW. A unique feature of the wind tunnel model was the integration of a scaled down powered rotor system and engine flow simulation module in one test set-up. The model allowed simulataneous gathering of both rotor and installed engine performance data. Prior to wind tunnel testing, the model was subjected to a series of elaborate functional tests. The wind tunnel tests were primarily aimed at evaluating the engine air intake characteristics, exhaust gas recirculation and IR signature. Testing was performed in a wide range of forward, sideward and rearward flight conditions. A large number of test parameter were acquired, ranging from rotor quantities like hub and blade loads, and rotor blade angles (pitch, flap and lead-lag) to air intake pressure distribution, exhaust gas and fuselage skin temperature. A high level of repeatability of the most import test parameters was achieved, demonstrating the quality of test results gained.
NH90 Helicopter Model Rotor and Engine Installation Wind Tunnel Test in DNW
1997
10 pages
Report
No indication
English
NH90 Helicopter Model Rotor and Engine Installation Wind Tunnel Test in DNW
British Library Conference Proceedings | 1997
|NH90 helicopter model rotor and engine installation wind tunnel test in DNW
Tema Archive | 1997
|NH90 Helicopter Development Wind Tunnel Programme
NTIS | 1997
|The NH90 Helicopter Development Wind Tunnel Programme
British Library Conference Proceedings | 1997
|