Attempt to measure sonic boom caustics from supersonic HVAR rocket sleds. [Mach 1. 25]

Technical Report · Fri Jun 01 04:00:00 EDT 1979

OSTI ID:6145695

Reed, J W

Fifteen rocket sled tests were performed in an attempt to measure extreme overpressure magnifications in the sonic boom caustic created by accelerating supersonic vehicles. These sleds with 25-HVAR-rocket motors were accelerated to about 425 m/s, Mach 1.25, on a 1500-m track. It was finally established that sonic-boom bow waves from these events were not strongly focused by propagation to 600 to 900 m from the track. It appears that nonlinear acoustic aperture effects prevented sharp focusing. Only 15 to 30% overpressure magnifications were recorded by an array of pressure gages. 32 figures, 15 tables.

• Research Organization: Sandia Labs., Albuquerque, NM (USA)
• DOE Contract Number: EY-76-C-04-0789
• OSTI ID: 6145695
• Report Number(s): SAND-78-1541
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450000 -- Military Technology
Weaponry
& National Defense
657004* -- Theoretical Physics-- Acoustics-- (-1987)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELERATION
ACOUSTICS
AIR TRANSPORT
ATMOSPHERIC EXPLOSIONS
ENGINES
EXPLOSIONS
FOCUSING
GROUND LEVEL
LEVELS
NONLINEAR PROBLEMS
ROCKET ENGINES
SHOCK WAVES
SOUND WAVES
SUPERSONIC TRANSPORT
TRANSPORT