Store separation methodology analysis
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Author
Hansen, Darcy Michael
Date
1991-09Advisor
Biblarz, Oscar
Schmidt, Louis
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Show full item recordAbstract
Various computational methods and operational computer codes used to predict the
aerodynamic coefficients and separation trajectories of aircraft stores are examined. The
semi-empirical aeroprediction code Missile DATCOM is used to obtain the coefficients
of a modeled store. These coefficients, together with the modeled ejection forces, are
used in free-stream state-space equations of motion to predict the store trajectory. The
results are compared with the Nielson Engineering and Research (NEAR) store separation
code which provides accurate trajectory profiles, for speeds below the critical speed, by
use of a vortex-lattice and panel method. Modification of the Missile DATCOM
aerodynamic coefficients provides single-point state-space prediction of the store pitch
trajectory within 30% of the NEAR code results. Store trajectories were restricted to the
first 0.2 seconds of free flight.
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