Research on vectoring thrust test technology in low-speed wind tunnel

A vectoring thrust test system for YF-1 6 standard model has been developed by FD-09 low-speed wind tunnel laboratory of China Academy of Aerospace Aerodynamics (CAAA).The maximum 2 .0 MPa compressed air flow through vectoring thrust pipe and j etted from nozzle can be generated to simulate the influence of the vectoring thrust j et on the aerody-namic characteristics of the whole plane.The system takes the full advantage of the existing high angle of attack device to achieve convenient conversion between the ventral and the dorsal air-sup-ply.The range of angle of attack can be adjusted from-6 degree to 90 degree,and the maximum Nozzle Pressure Ratio (NPR)is more than 5 .In tests an ordinary balance,a vectoring thrust force measurement sensor and other instruments are applied to obtain the influence of the j et flow on the aerodynamic characteristics of the whole plane and the nozzle aerodynamic performance. This paper describes the vectoring thrust test system design,the instruments and devices employed,and the typical results obtained.The system can be used for proj ect tests after making further improvements in sting interference correcting;sensor calibration in jetting status and pipe optimization design.