Aeronautics and astronautics – Landing gear
Reexamination Certificate
2011-06-07
2011-06-07
Eldred, J. Woodrow (Department: 3641)
Aeronautics and astronautics
Landing gear
C244S10000R, C244S1020SS, C244S1020SS
Reexamination Certificate
active
07954757
ABSTRACT:
A landing gear noise attenuator mitigates noise generated by airframe deployable landing gear. The noise attenuator can have a first position when the landing gear is in its deployed or down position, and a second position when the landing gear is in its up or stowed position. The noise attenuator may be an inflatable fairing that does not compromise limited space constraints associated with landing gear retraction and stowage. A truck fairing mounted under a truck beam can have a compliant edge to allow for non-destructive impingement of a deflected fire during certain conditions.
REFERENCES:
patent: 202634 (1878-04-01), Connor
patent: 1446531 (1923-02-01), Williams, Jr.
patent: 2129824 (1938-09-01), De Seversky
patent: 2176461 (1939-10-01), Larsen
patent: 2180462 (1939-11-01), De Seversky
patent: 2363126 (1944-11-01), Gibson
patent: 2406710 (1946-08-01), Riggles, Jr.
patent: 2652214 (1953-09-01), Cussons
patent: 2719016 (1955-09-01), Wicks
patent: 2747817 (1956-05-01), Saulnier
patent: 4027836 (1977-06-01), Seibel
patent: 5058827 (1991-10-01), Dansereau et al.
patent: 5104063 (1992-04-01), Harley
patent: 5156353 (1992-10-01), Gliebe et al.
patent: 5209434 (1993-05-01), Lo Presti et al.
patent: 5269481 (1993-12-01), Derrien
patent: 5478030 (1995-12-01), Derrien et al.
patent: 5749546 (1998-05-01), Blackner et al.
patent: 6032090 (2000-02-01), von Bose
patent: 6048477 (2000-04-01), Thorpe et al.
patent: 6173920 (2001-01-01), Meneghetti
patent: 6454219 (2002-09-01), Moe
patent: 6457680 (2002-10-01), Dobrzynski et al.
patent: 6619587 (2003-09-01), Chow et al.
patent: 6786451 (2004-09-01), Courtois et al.
patent: 2003/0102406 (2003-06-01), Chow et al.
patent: 2003/0152145 (2003-08-01), Kawakita
patent: 2003/0164423 (2003-09-01), Courois et al.
patent: 2003/0225492 (2003-12-01), Cope et al.
patent: 2004/0040797 (2004-03-01), Plude et al.
patent: 2004/0104301 (2004-06-01), Wickerhoff et al.
patent: 2223543 (1998-06-01), None
patent: 69715787 (2003-02-01), None
patent: 846540 (1998-06-01), None
patent: 1067045 (2001-10-01), None
patent: 1192077 (2004-08-01), None
patent: 1340676 (2005-06-01), None
patent: 2179282 (1998-06-01), None
patent: 2836667 (2004-07-01), None
patent: 494542 (1938-10-01), None
patent: 534522 (1941-03-01), None
patent: 745965 (1956-03-01), None
patent: 9915977 (1999-09-01), None
patent: 2319981 (2001-08-01), None
patent: 2003/504267 (2003-02-01), None
patent: WO01/04003 (2001-01-01), None
Ahuja K.K., Martin, J., Miller B., & Gu X., “On Automobile Antenne and Roof Rack Noise Control,” AIAA 93-4398, 15th AIAA Aeroacoustics Conference, Long Beach, CA, Oct. 25-27, 1993.
Carter, Guillot, Ng & Copenhaver, “Aerodynamic Performance of a High-Turning Compressor Stator with Flow Control,” AIAA 37th Joint Propulsion Conf., 2001, Salt Lake City, Utah.
Davy, R. & Remy, H., “Airframe Noise Characteristics of a 1/11 Scale Airbus Model”, 4th AIAA/CEAS Aeroacoustics Conf., Jun. 2-4, 1998, Toulouse, France.
Dobrzynski W. & Buchholz H., Full-Scale Noise Testing on Airbus Landing Gears in the German Dutch Wind Tunnel, 3rd AIAA/CEAS Aeroacoustics Conf, Paper 97-1597, May 12-14, 1997.
Dobrzynski W., Chow L.C., Guion P., &Shiells D., A European Study on Landing Gear Airframe Noise Sources, 5th AIAA/CEAS Aeroacoustics Conference & Exh., Jun. 12-14, 2000.
Fink M.R., Airframe Noise Prediction Methods, FAAA-RD-77-29, 1977.
Fink, Martin R. & Bailey, D.A., Model Test of Airframe Noise Reduction Concepts, AIAA 6th Aeroacoustics Conf, Jun. 4-6, 1980, Hartford, CT.
Hardin, Jay C., Toward a Comprehensive Analysis of Landing Approach Noise Sources, AIAA-97-1593-CP, 1997.
Hayes, Julie A.; Horne, W. Clifton; Soderman, Paul T. & Bent, Paul H., Airframe noise characteristics of a 4.7% scale DC-10 model, AIAA-97-1594-CP.
Heidelberg, L.J., Hall, D.G., Bridges, J.E., & Nallasamy, M., A Unique Ducted Fan Test Bed for Active Noise Control and Aeroacoustics Research, CEAS/AIAA-96-1740, May 1996.
Heller, Hanno H. & Dobrzynski, Werner M., Sound Radiation From Aircraft Wheel-Well/Landing-Gear Configurations, Journal of Aircraft, vol. 14, No. 8, 1977.
Heller, Hanno H. & Dobrzynski, W.M., Unsteady Pressure Characteristics on Aircraft Components and Far-field Radiated Airframe Noise, Journal of Aircraft, vol. 15, #12, Dec. 1978.
Jaeger, S.M., 777 Landing Gear Acoustics: Even More Preliminary Acoustic Results, NASA AST-QAT 4th Airframe Noise.
Konstadinopoulos, P., Mook, D.T., & Nayfeh, A.H. (1981), A Numerical Method for General Unsteady Aerodynamics, AIAA Atmospheric Flight Mechanics Conf, 1981.
Konstadinopoulos, P., Thrasher, D.F., D.T. Mook, Nayfeh, A.H., & Watson, L.(1985), A Vortex-Lattice Method for General, Unsteady Aerodynamics, Journal of Aircraft, 22(1),43-49.
Larssen J.V. & Devenport W.J., Acoustic Properties of the Virginia Tech Stability Wind Tunnel, Dept of Aerospace & Ocean Eng, VA Tech, Rpt VPI-AOE 263,1999.
Macaraeg M.G., Fundamental Investigation of Airframe Noise, NASA Langley Research Center Report, 1998.
Miller, Wendell R.; Meecham, William C. & Ahtye, Warren F., Large Scale Model Measurements of Airframe Noise Using Cross-Correlation Techniques, J.Acoust. Soc. Am. 71(3), Mar. 1982.
Munson A.G., A Modeling Approach to Nonpropulsive Noise, AIAA 76-525, 1976.
Piet, Jean-Francois & Elias Georges, Airframe Noise Source Localization Using a Microphone Array, AIAA-97-1643-CP.
Preidikman, S. Numerical Simulations of Interactions Among Aerodynamics, Structural Dynamics, and Control Systems, PhD thesis, VA Polytechnic Inst. & State Unv., 1998.
Rao,W.M., Feng,J., Burdisso, R.A., Wg,W.F., Experimental Demonstration of Active Flow Control to Reduce Unsteady Stator-Rotor Invention, AIAA J., vol. 39, #3, Mar. 2001, pp. 458-464.
Stoker,R.W. & Sen, R., An Experimental Investigation of Airframe Noise Using a Model-Scale Boeing 777, AIAA-2001-0987, 39th AIAA Aerospace Sciences Mtg & Exh,Jan. 8, 2001, Reno, NV.
Stoker, R.W., Recent Airframe Noise Testing Done by Boeing, Presented at the NASA AST-QAT 4th Airframe Noise Workshop, Dec. 2000.
Stoker, R.W., Underbrink, J.R. & Neubert, F.R., Investigations of Airframe Noise in Pressurized Wind Tunnerls, AIAA-2001-2107, 7th AIAA/CEAS Aeroacoustics Conf, May 28, 2001, NL.
Willshire, W.L., Jr. & Garber, D.P., Advanced Subsonic Transport Approach Noise—The Relative Contribution of Airframe Noise, NASA Tech Memo 104112, Jun. 1992.
International Preliminary Search Report on Patentability, Int. Application No. PCT/US2005/010082 dated Oct. 4, 2006.
Abeysinghe Amal
Kwan Hwa-Wan
Moe Jeffrey W.
Whitmire Julia
Eldred J. Woodrow
Goodrich Corporation
Womble Carlyle Sandridge & Rice PLLC
LandOfFree
Landing gear noise attenuation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Landing gear noise attenuation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Landing gear noise attenuation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2727930