Optimization Design for Thrust Reverser Cascade with a View to Reduce Noise

Abstract

reverser considered in this paper uses the natural blockage concept, with only the fan duct flow being reversed. This paper focuses on the study of the aerodynamic performance of the cascade within a cold stream thrust reverser. Aerodynamic simulations are carried out using realistic operating conditions, for idealized cascade models representing three design options. The aim of this work is to investigate whether the aerodynamic performance of the thrust reverser cascade has been improved while minimizing weight of the cascade. In addition, t1his is the first attempt of us to considering noise reduction during design of the thrust reverse. The numerical simulations show that despite a reduction in total reverse thrust for the weight reduced designs, the supersonic flow regime, which existed in the original design, was eliminated after changing vane configurations made with the 5% and 10% weight reductions. The aerodynamic performance around the cascade and in the fan duct within the thrust reverser has been improved. Moreover, the acoustic characteristics of the thrust reverser are improved too. The total reverse thrust is not significantly affected with the modified cascade.

Citation

Yao, H., Butterfield, J., Raghunathan, S., Wang, J., Cooper, R. and Benard, E. (2005), "Optimization Design for Thrust Reverser Cascade with a View to Reduce Noise", Multidiscipline Modeling in Materials and Structures, Vol. 1 No. 1, pp. 63-72. https://doi.org/10.1163/1573611054455157