Accession Number : AD0889312

Title :   Use of the Flow Angularity Technique for Predicting Store Separation Trajectories.

Descriptive Note : Final rept. May-Oct 71,

Corporate Author : AIR FORCE ARMAMENT LAB EGLIN AFB FLA

Personal Author(s) : Korn,Stephen C.

Report Date : OCT 1971

Pagination or Media Count : 45

Abstract : 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)

Descriptors :   (*BOMB TRAJECTORIES, PREDICTIONS), (*EXTERNAL STORES, SEPARATION), (*JET FIGHTERS, EXTERNAL STORES), SUBSONIC CHARACTERISTICS, FLOW FIELDS, DESCENT TRAJECTORIES, IMPACT PREDICTION, MISS DISTANCE, COMPUTER PROGRAMMING

Subject Categories : Attack and Fighter Aircraft
      Aerial Bombs
      Armor

Distribution Statement : APPROVED FOR PUBLIC RELEASE