Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding
Patent
1999-05-21
2000-07-11
Lobo, Ian J.
Communications, electrical: acoustic wave systems and devices
Echo systems
Distance or direction finding
G01V 138
Patent
active
060882964
ABSTRACT:
A soft-bodied, towable, active acoustic module includes a specially formed uspension fixture and a flexible faired body enclosing an active acoustic array. The suspension fixture is a Y-shaped tube having a single forward end and two trailing ends, one for attachment of a trailing tow cable and the other for attachment of the flexible, faired body. The flexible, faired body is an elongated hydrofoil having sections which allow lateral bending. The combination of the suspension feature and lateral bending feature allows the module to be deployed and recovered through shipboard undersurface deployment tubes. A weight attached to the faired body near the lower rear end balances the body to maintain a substantially vertical position during towing. Flow steps on the lower portion of the faired body reduce lateral oscillations.
REFERENCES:
patent: 3921562 (1975-11-01), Kelly
patent: 5856954 (1999-01-01), Grall
patent: 5909408 (1999-06-01), Warnan et al.
Frodyma Frederick J.
Ruffa Anthony A.
Seaman Peter E.
Stottlemyer Thomas R.
Toplosky Norman
Gauthier Robert W.
Lall Prithvi C.
Lobo Ian J.
McGowan Michael J.
The United States of America as represented by the Secretary of
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