ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Investigation on characteristics of store release from internal bay in supersonic flow under flow control
Received date: 2014-09-16
Revised date: 2014-10-08
Online published: 2015-01-09
Supported by
National Level Project
To solve the problem of safety release of internal bay at supersonic condition (Mach number Ma>3), two methods of flow control which are suitable for supersonic internal bay with a large curvature contour are proposed in this paper. About the two different flow control methods, one uses a rod spoiler, and the other uses a jet screen. In order to verify their effectiveness, comparison and analysis of supersonic store release in four different ways including gravity release, ejection release, gravity release with rod spoiler and gravity release with jet screen is presented through a series of simulation, by using six degrees of freedom moving body by leveraging the overset gridding technique and Navier-Stokes solution based on k-ω turbulence model. Based on the result, dynamic characteristics of store separation with flow control obviously change at free stream Mach number Ma∞>3. The following conclusions can be reached based on pitch/yaw property during store dropping: the rod spoiler is favorable to safe separation; the jet screen has application potential; however, parameters of jet screen should be designed in optimum according to specific condition, otherwise store may be induced to an attitude divergence in pitch.
Key words： flow control; supersonic; internal bay; store separation; numerical computation
GUO Liang , WANG Chun , YE Bin , XIE Yunkai , TONG Mingbo . Investigation on characteristics of store release from internal bay in supersonic flow under flow control[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015 , 36(6) : 1752 -1761 . DOI: 10.7527/S1000-6893.2014.0325
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