Flow-Field, Aerodynamic Loads, and Separation Trajectory Tests on the MK-84 and SUU-54 Super HOBOS Guided Weapons with the F-4C and A-7D Parent Aircraft at Mach Numbers 0.65 to 1.60
Abstract
Wind tunnel tests were conducted with 0.05-scale models of the F-4C and A-7D aircraft and Super HOBOS stores to study parent-aircraft flow-field, store aerodynamic loading, and store separation characteristics. Free-stream aerodynamic characteristics were determined for both the MK-84 and SUU-54 Super HOBOS with fin tips retracted and extended at angles of attack up to 44 deg. Additional free-stream data were obtained on the MK-84 store with only one fin tip extended. Flow angularity measurements were made under the left- and right- wing inboard pylons and centerline of the F-4C and under the left- and right- wing center pylons of the A-7D up to 20 ft away from the pylons for aircraft angles of attack up to 16 deg and sideslip angles of 0 and 9 deg. Aerodynamic loads data were obtained on the MK-84 store with fin tips retracted and extended at the same positions in the aircraft flow fields where flow angularity measurements were made. Separation trajectories for the MK-84 and SUU-54 Super HOBOS with tips retracted were initiated from the F-4C inboard wing pylons and A-7D center and outboard wing pylons at simulated altitudes from sea level to 40,000 ft for dive angles from 0 to 60 deg and at Mach numbers from 0.65 to 1.6. Aircraft angle of attack ranged from -1 to 10 deg. Trajectories for the extended-tip configurations of the Super HOBOS were initiated at a point 3.5 ft below the pylons, using initial positions and velocities as determined from the corresponding separation trajectories for the retracted-tip configurations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1974
- Accession Number
- AD0923424
Entities
People
- J. B. Carman
Organizations
- Arnold Engineering Development Complex