Accession Number:

AD0450184

Title:

RESEARCH AND DEVELOPMENT PROGRAM TO DEMONSTRATE THE FEASIBILITY OF A HIGH INTENSITY SOUND GENERATOR.

Descriptive Note:

Final rept. Jan 63-Feb 64,

Corporate Author:

ASTROSYSTEMS INTERNATIONAL INC FAIRFIELD NJ

Personal Author(s):

• Wiech, Raymond E., Jr.
• Preston, Harry L.
• Levy, Maurice
• Schwalb, Allen

Report Date:

1964-06-03

Pagination or Media Count:

1.0

Abstract:

The objective of this contract was to demonstrate the feasibility of using an intermittent gaseous detonation device to generate high intensity sound. A two phase program was conducted. The first phase consisted of the analysis, design and testing of a single detonation tube. The second phase consisted of the design, fabrication and testing of a multiple tube unit. Empirical studies of the effect of the tube size on the acoustical power radiated were also conducted. Results obtained at the test site were as follows Operation of the single tube unit produced peak sound pressures of 165 db at the tubeoutlet and an average value of 77 db at a distance of 1000 feet. Corresponding levels for the eight tube array were 184 db peak at the outlet and 91 db average at 1000 feet. During brief and intermittent testing intervals of the 64 tube unit instantaneous peak values of 195 db were measured at the outlet and peak values as high as 119 db were noted at 1000 feet. Author

Descriptors:

• *SOUND GENERATORS
• FEASIBILITY STUDIES
• SHOCK TUBES
• ACOUSTICS
• PROPANOLS
• DETONATION WAVES
• PRESSURE
• SOUND TRANSMISSION
• MEASUREMENT
• SHOCK WAVES
• SOUND
• PROPAGATION

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE