Research on the influence of aerodynamic characteristics of the front column beam on rocket sled test objects

DOI:	10.11809/bqzbgcxb2023.02.014
Keywords:	rocket sled; front column; position of beam; aerodynamic characteristics; numerical analysis
Abstract:	In order to determine the position of the front column beam of a dual track rocket sled at a running speed of 800 m/s, this paper solves a three dimensional steady N S equation through SST turbulence model, simulates rocket sleds of five different beam heights, and analyzes the flow field around the beams and aerodynamic characteristics of the test objects. The results show that installation height of the beam has influences on the flow direction of the beam rectifier, the maximum pressure value and position on the rectifier surface, the interaction shock wave between the test objects and the rocket sled, the aerodynamic lift of the test objects, the pressure center coefficient of the test objects, and the surface pressure distribution of the test objects. Besides, the design comparison table between the installation height of the beam and the mass center coefficient of the test objects are obtained for the purpose of the average working load of each explosive bolt during the operation of the rocket sled and the stabilized flying attitude of the test objects after separation of the rocket sled.
Published:	2023-02-28
PDF HTML