Use of the Flow Angularity Technique for Predicting Store Separation Trajectories


Book Description

A method is being developed for solving the store separation trajectory problem by flow angularity techniques. This approach uses experimentally measured interference flow field data coupled with store free stream aerodynamic coefficients. Presently, the flow field about the inboard triple ejector rack loaded with M-117 bombs at Mach 0.85 on the F-4 aircraft is being used to predict the trajectory of other stores launched from the inboard triple ejector rack at subsonic and transonic Mach numbers. Sample comparisons of trajectories produced by the captive trajectory system are presented. This technique allows calculation of the trajectory until the store impacts on the ground. Sample miss distances caused by the interference flow field calculated using the flow angularity technique are presented for the M-117 bomb. (Author).




Validation and Expansion of the Flow Angularity Technique for Predicting Store Separation Trajectories


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This report documents the external flow fields caused by various weapon configurations on the wing of an F-4 aircraft, verifies assumptions made in the flow angularity technique, and presents the documentation for the 'Flow Angularity Computer Program' with example trajectories. The flow angularity program is presently capable of calculating the trajectories of stores off the inboard and outboard wing stations in either single, triple ejector rack, or multiple ejector rack configurations. The assumptions made in the flow angularity technique have been analyzed and generally validated as good approximations. (Author).




Store Separation


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Numerical Methods and Windtunnel Testing


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