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Class Information
Number: 181/218
Name: Acoustics > Sound-modifying means > Muffler, fluid conducting type > Reaction engine type > Ground installation silencer
Description: Subject matter wherein the fluid conducting device is a fixed structure with an opening to receive the tail end of a jet engine exhaust nozzle.










Patents under this class:

Patent Number Title Of Patent Date Issued
8230967 Vane type silencers in elbow for gas turbine Jul. 31, 2012
8225592 Microjet noise suppression system for jet engines Jul. 24, 2012
8015758 Noise insulation device for aircraft Sep. 13, 2011
7918310 Noise attenuation device for reducing jet engine noise during testing Apr. 5, 2011
7717229 Gas turbine exhaust sound suppressor and associated methods May. 18, 2010
7516815 Arrangement for the generation of sonic fields of a specific modal composition Apr. 14, 2009
7383918 Noise suppressor exhaust sound attenuation overhaul and repair kit Jun. 10, 2008
6539702 Gas turbine exhaust passage and damper system for same having a non-enclosed porous peripheral wall Apr. 1, 2003
6092621 Methods and apparatus for suppressing engine test cell howl Jul. 25, 2000
6016888 Stable flow enhancements for ground runup enclosure Jan. 25, 2000
5856640 Sound suppression cushion Jan. 5, 1999
5715672 Exhaust silencer panel for gas turbine Feb. 10, 1998
5650599 Noise cancellation method and apparatus Jul. 22, 1997
5422443 Rocket exhaust disrupter shapes Jun. 6, 1995
5377534 Ground test installation for the jet engines of an airliner Jan. 3, 1995
5127609 Jet blast deflector fence Jul. 7, 1992
4987970 Device for collecting the exhaust gas jet of an aircraft reactor and a testing installation for aircraft reactors Jan. 29, 1991
4958700 Protective facility for suppressing noise produced at high gas flows by engines installed on aircraft Sep. 25, 1990
4940392 Jet pump with stabilized mixing of primary and secondary flows Jul. 10, 1990
4753319 Exhaust silencer for high-power gas turbines Jun. 28, 1988
4747467 Turbine engine noise suppression apparatus and methods May. 31, 1988
4733751 Rocket exhaust disrupter Mar. 29, 1988
4573551 Exhaust gas duct for gas turbines Mar. 4, 1986
4505483 Inflatable seal for opening in building wall Mar. 19, 1985
4471924 Blast deflecting fence Sep. 18, 1984
4169517 Device serving the noise control of sound energy radiated from the jet engines of an aircraft operated on the ground in stationary position Oct. 2, 1979
4168763 Sound suppressor apparatus Sep. 25, 1979
4128769 Eductor muffler Dec. 5, 1978
4122912 Dry cooled jet aircraft runup noise suppression system Oct. 31, 1978











 
 
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