Open Access

ARTICLE

Numerical Simulation about the Characteristics of the Store Released from the Internal Bay in Supersonic Flow

Xiaohui Cheng¹, Haiqing Si^1,*, Yao Li¹, Peihong Zhang²

1 College of General Aviation and Flight, Nanjing University of Aeronautics and Astronautics, Nanjing, 21100, China
2 China Aerodynamics Research and Development Center, Mianyang, 621000, China

* Corresponding Author: Haiqing Si. Email:

(This article belongs to this Special Issue: Numerical Methods in Engineering Analysis, Data Analysis and Artificial Intelligence)

Computer Modeling in Engineering & Sciences 2023, 136(2), 1729-1742. https://doi.org/10.32604/cmes.2023.022694

Received 21 March 2022; Accepted 02 September 2022; Issue published 06 February 2023

Abstract

To understand the influence of the initial release conditions on the separation characteristics of the store and improve it under high Mach number (Ma = 4) flight conditions, the overset grid method and the Realizable turbulence model coupled with an equation with six degrees of freedom are used to simulate the store released from the internal bay. The motion trajectory and the attitude angle of the store separation under the conditions of different centroid, velocity, height and control measures are given by the calculated result. Through analysis, the position of the centroid will affect the separation of the store, which needs to be considered in the design. Increasing the launching height is conducive to the separation of the store. If the store has an initial velocity, it can leave the internal bay more quickly and reduce the probability of collision with the wall. Cylindrical rod and slanted aft wall control measures can improve the attitude of the store and make the store fall more smoothly.

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