Design method of engine thrust reverser

Abstract

The invention relates to a design method of an engine thrust reverser, which is applied to the engineering design of aviation medium and large turbo fan thrust reverser. The design method comprises the steps of firstly, determining the design requirements of the engine thrust reverser, and then determining engine flow parameters relevant to reverse thrust; designing a thrust reversing blade grids and runners according to the flow parameters and carrying out two-dimensional modeling, and carrying out calculation and simulation, thus obtaining reverse thrust and performance parameters of an engine of the thrust reverser; and if the result meets the design requirements of the thrust reverser, finishing, otherwise, redesigning the thrust reversing blade grids and the runners. According to the design method, the negative effects of the work of the engine thrust reverser on the performance of an engine body can be sufficiently considered, so that the problem of the negative effects can be solved in the engineering design stage; the method adopts simple processes, and is easy to operate, and the design result is verified by experiments, so that the practical engineering demands can be met.

Description

Technical field [0001] The invention belongs to the field of aeroengine design, and in particular relates to a design method of an engine thrust reverse device. Background technique [0002] As a basic configuration of large and medium-sized aircraft, the thrust reverser device has been fully applied and verified in terms of shortening the landing roll distance and improving the aircraft maneuverability and deceleration performance. [0003] At present, simulation and test methods are commonly used at home and abroad for the design and optimization of thrust reversers, and a lot of fruitful research has been carried out. However, none of the current methods have performed coupling calculations for the performance of the thrust reverser device and the engine body (or low-pressure stage fan). The performance impact of the thrust reverser device on the body and the impact of the body on the thrust reverser device , The calculation of various index parameters of the thrust reverser ha...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a design method for an engine thrust reverser, which solves the problems of low precision and large errors in the current design and calculation of thrust reverser index parameters

Images