Design, modelling and analysis of a six component force balance for hypervelocity wind tunnel testing

摘要

A combination of modelling and analysis techniques was used to design a six component force balance. The balance was designed specifically for the measurement of impulsive aerodynamic forces and moments characteristic of hyper- velocity shock tunnel testing using the stress wave force measurement technique. Aerodynamic modelling was used to estimate the magnitude and distribution of forces and finite element modelling to determine the mechanical response of proposed balance designs. Simulation of balance performance was based on aerodynamic loads and mechanical re- sponses using convolution techniques. Deconvolution was then used to assess balance performance and to guide further design modifications leading to the final balance design.