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Six-component Force Balance for Big Expansion Ratio Nozzle Test-bed


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Six-component Force Balance for Big Expansion Ratio Nozzle Test-bed
YAO Yu1WU Hong-tao2
1. College of Aerospace Engineering; 2. College of Mechanical and Electronic Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
big expansion ratios nozzle test-beds six-component balances static calibration finite element method
V211. 752
To study the dynamic performance of a big expansion ratio nozzle with asymmetric structure, a nd measure the six-component dynamic force accurately for the thrust vectoring,a novel integrated six-component force balance is introduced in the paper based on S-bend deformation of Tbeams. By analyzing the measuring microstrain and the assembled structure of the test-bed, the balance is designed and fabricated. The static calibration is employed to obtain the matrix of working coefficients for the balance and the finite element method is included to demonstrate the presented design method. Research result shows that the presented balance has a simple structure and high precision and accuracy,which can meet the demands of a six-component force measurement for the big expansion ratio nozzle test-beds.


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Last Update: 2012-10-23