Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Patent
1997-12-23
2000-10-31
Poon, Peter M.
Aeronautics and astronautics
Aircraft, heavier-than-air
Helicopter or auto-rotating wing sustained, i.e., gyroplanes
244 1N, B64C 2700
Patent
active
061389471
ABSTRACT:
An active noise control system for minimizing undesirable acoustic noise in a defined volume, wherein the undesirable acoustic noise is generated by high frequency structural vibrations emanating from a vibration source structurally coupled to the defined volume at a structural interface. The active noise control system comprises a sensor subsystem disposed in combination with the defined volume for sensing the undesirable acoustic noise in the defined volume, an actuator subsystem disposed proximal to the structural interface, and a controller functionally interconnecting the sensor subsystem to the actuator subsystem, the controller being operative to receive input from the sensor subsystem and to transmit command signals to the actuator subsystem in response thereto for generating selected high frequency counter-vibrations that are interactive with the high frequency structural vibrations to minimize the undesirable acoustic noise in the defined volume.
REFERENCES:
patent: 2361071 (1944-10-01), Vang
patent: 4562589 (1985-12-01), Warnaka et al.
patent: 4689821 (1987-08-01), Salikuddin et al.
patent: 4715559 (1987-12-01), Fuller
patent: 4819182 (1989-04-01), King et al.
patent: 4947356 (1990-08-01), Elliott et al.
patent: 5310137 (1994-05-01), Yoerkie, Jr. et al.
patent: 5316240 (1994-05-01), Girard et al.
patent: 5423658 (1995-06-01), Pla et al.
patent: 5453943 (1995-09-01), Magliozzi
patent: 5526292 (1996-06-01), Hodgson et al.
patent: 5551650 (1996-09-01), Southward et al.
patent: 5732905 (1998-03-01), Krysinski
patent: 5789678 (1998-08-01), Pla
patent: 5853144 (1998-12-01), Vincent
patent: 5895012 (1999-04-01), Krysinski et al.
Welsh William A.
Yoerkie, Jr. Charles A.
Dinh Tien
Poon Peter M.
Sikorsky Aircraft Corporation
Solomon Adam C.
LandOfFree
Active noise control system for a defined volume does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Active noise control system for a defined volume, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active noise control system for a defined volume will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2042643