Acoustic pinger for use in high speed water entry test bodies

Details Acoustic pinger for use in high speed water entry test bodies Acoustic pinger for use in high speed water entry test bodies

1988-02-29

1989-05-09

Kyle, Deborah L.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367 2, 367152, 367165, 73170A, H04R 102

Patent

active

048294942

ABSTRACT:
Tracking and location of a high speed water rentry vehicle is assured by the inclusion of an acoustic source. An acoustic generator in the form of a piezoelectric transducer is potted in polyurethane and fills a volume aft of a disc-shaped wall in the re-entry vehicle. The potting compound couples the acoustic generator to the metal skin to enable acoustic transmission from the vehicle to the tracking range. Optionally, a layer of material is interposed between the potting compound and the vehicle's metal skin to aid in acoustically coupling the generator's output to the metal skin. No structural modifications of the entry vehicle are required yet the pinger is capable of sustaining re-entry shock.

REFERENCES:
patent: 3846744 (1974-11-01), Renna et al.
patent: 4007633 (1977-02-01), Thompson
patent: 4449211 (1984-05-01), Schmidt et al.
patent: 4463454 (1984-07-01), Hemond et al.
patent: 4523122 (1985-06-01), Tone et al.
patent: 4545041 (1985-10-01), Tim et al.
patent: 4731763 (1988-03-01), Wagner
Exploring Subsurface Waves with Neutrally Buoyant Floats, by Pochapsky, Hon Laboratories.

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