PRESSURE COMPENSATED TRANSDUCER SYSTEM WITH CONSTRAINED DIAPHRAGM
Assignee
US Government
Filed as: UNITED STATES OF AMERICA, THE, AS REPRESENTED BY THE SECRETARY OF THE NAVY
Filed
Jul 29, 1988
Granted
Aug 18, 1992
Location
San Diego CA (SAIC/General Dynamics)
Abstract
An acoustic source apparatus has a acoustic transducer that is enclosed in substantially rigid and watertight enclosure to resist the pressure of water on the transducer and to seal the transducer from the water. The enclosure has an opening through which acoustic signals pass and over which is placed a resilient, expandable and substantially water-impermeable diaphragm. A net stiffens and strengthens the diaphragm as-well-as constrains the diaphragm from overexpansion or from migrating due to buoyancy forces. Pressurized gas, regulated at slightly above ambient pressure, is supplied to the enclosure and the diaphragm to compensate for underwater ambient pressures. Gas pressure regulated at above ambient pressure is used to selectively tune the pressure levels within the enclosure and diaphragm so that diaphragm resonance can be achieved. Controls are used to selectively fill, as-well-as vent the enclosure and diaphragm during system descent and ascent, respectively. A signal link is used to activate these controls and to provide the driving force for the acoustic transducer.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Mar 6, 1989
Rescinded
Nov 6, 1991
Duration
2 years, 8 months
Inventor
- 1JOSEPH L. PERCY
Sensitive facility: San Diego CA (SAIC/General Dynamics)
Record Details
- Patent number
- US 5140560
- Application
- 07227937
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
Browse by Assignee
US GovernmentMore from this assignee
PENTAFLUOROSULFANYLNITRAMIDE SALTS
US Government
TITANIUM ALLOY CONTAINING AL,V,MO,FE, AND OXYGEN FOR PLATE APPLICATIONS
US Government
HYDROGEN GENERATION APPARATUS FOR AN UNDERWATER VEHICLE
US Government
CONFORMING TUNING COUPLER FOR FLEXTENSIONAL TRANSDUCERS
US Government
CLOSED BRAYTON CYCLE DIRECT CONTACT REACTOR/STORAGE TANK WITH CHEMICAL SCRUBBER
US Government
CLOSED CYCLE BRAYTON PROPULSION SYSTEM WITH DIRECT HEAT TRANSFER
US Government
Related by domain
NON-LETHAL ELECTROMAGNETIC ACTIVE BODY
DIEHL MUNITIONSSYSTEME GMBH & CO., KG
METHOD AND APPARATUS FOR THE DETECTION OF OBJECTS USING ELECTROMAGNETIC WAVE ATTENUATION PATTERNS
JG TECHNOLOGIES LLC
APPARATUS FOR CONTROLLING THE POSITION AND DIRECTION OF A LASER BEAM
STRUCTURES HAVING ENHANCED BIAXIAL TEXTURE
U.S. DEPARTMENT OF ENERGY
SOLAR ARRAY AUGMENTED ELECTROSTATIC DISCHARGE FOR SPACECRAFT IN GEOSYNCHRONOUS EARTH ORBIT
SPACE SYSTEMS/LORAL, INC.
MOUNTING OF MACHINERY WITHIN A VESSEL
GEC-MARCONI LIMITED