PERFORMANCE AND NOISE SUPPRESSION TESTS OF A WATER CANNON
Additional laboratory tests were conducted with a high pressure water cannon which had previously been developed for rock tunneling experiments. Pulsed jets were fired against copper samples to correlate crater volume with input energy. Research was conducted to devise a method for measuring the water jet velocity when air at atmospheric pressure was used in the exponential nozzle prior to firing. The nozzle design was modified in order to provide improved performance when air is used instead of vacuum in the nozzle. An improved jet noise suppressor was tested in shots against 2 ft. cubes of Barre granite. Peak noise intensity was reduced to 124 DB at 26 ft. (8 m) range.
- See also PB-233 006.
Terraspace, Incorporated304 North Stonestreet Avenue
Rockville, MD USA 20850
Washington, DC USA 20590
- Cooley, W C
- Publication Date: 1974-9
- Pagination: 35 p.
- TRT Terms: Cratering; Excavation and tunneling; Fracture mechanics; Hydraulic jetting; Noise control; Nozzles; Rock excavation; Rock mechanics; Tunneling; Water cannons
- Uncontrolled Terms: Noise reduction
- Old TRIS Terms: Hydraulic jets
- Subject Areas: Bridges and other structures; Construction; Geotechnology; Highways; Maintenance and Preservation;
- Accession Number: 00090048
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: TR-406-2 Final Rpt.
- Contract Numbers: DOT-FR-20042
- Files: TRIS, USDOT
- Created Date: Apr 22 1975 12:00AM