Modifications of Triple Ejector Rack Geometry to Reduce Bottom Station Weapon Separation Perturbations at High Speeds.

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Abstract:

Several modifications to the geometry of the triple ejector rack were proposed to reduce the rapid nose down pitch experienced by large diameter weapons released from bottom TER stations on F-4 aircraft at high speeds. Both captive trajectory simulations and pressure distribution surveys were performed during wind tunnel evaluations of the effectiveness of each proposed modification. All testing was done at Mach 0.66 or 0.9 with Reynolds number on the order of 2 to 4 million per foot. A follow-on flight test program was conducted to determine the feasibility of employing the most promising triple ejector rack modification to improve the high speed separation characteristics of full scale SUU-30Bb dispenser munitions. Modified author abstract

Author(s):
Holmberg, John L.
Author Organization(s):
AIR FORCE ARMAMENT LAB EGLIN AFB FLA
Descriptive Note:
Final rept. Sep 72-May 73,
Pagination:
0053

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFATL-TR-73-171
Task Number(s):
112001
Project Number(s):
AF-1120
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application
Communities of Interest:
Weapons Technologies
Descriptor(s):
*Jet fighters, *Bomb ejectors, *Trajectories, External stores, Separation, Aerodynamic forces, Modification, Wind tunnel models
Field(s)/Group(s):
Attack and Fighter Aircraft, Ammunition and Explosives, Armor
Keyword(s):
F 4 aircraft, SUU 30B B dispensers
Report Date:
1973 Aug 01