Accession Number : AD0354995

Title :   Techniques for Improving Reliability of Air Droppable Sonar Transponder Buoys.

Descriptive Note : Memo Rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Diehl, Walter C. ; Galli, Lewis G.

Report Date : OCT 1964

Pagination or Media Count : 16

Abstract : An air droppable transponder buoy for use with the LORELI technique has been developed. These units were originally designed to be dropped from altitudes of 150 feet and speeds of 150 kts. The main purpose of the study was to modify the buoys to slow down the rate of descent and to promulgate a clean water entry, thereby reducing the impact forces. Several approaches to the problem were attempted. A small nylon parachute, attached to the float section, was highly successful. (Author)

Descriptors :   *SONAR BEACONS, AIR DROP OPERATIONS, PARACHUTE DESCENTS, BUOYS, RELIABILITY.

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE