ClassID:

72611

B64D33/06 - CPC Classification

Classification description:

Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of exhaust outlets or jet pipes Silencing exhaust or propulsion jets

Recent Application in this class:
#1
20260125159
2026-05-07

Aircraft and Method for Operating

#2
20260077875
2026-03-19

TURBO-COMPOUNDED ENGINE WITH EXHAUST DUCT ACOUSTIC ARRANGEMENT

#3
20260049717
2026-02-19

COWL ASSEMBLY FOR A GAS TURBINE ENGINE

#4
20260018154
2026-01-15

ASSEMBLY OF ACOUSTIC COMPONENT SECTORS

#5
20260008238
2026-01-08

METHOD FOR FORMING A SOUND ATTENUATION STRUCTURE PROVIDED WITH S-SHAPED CELLS

#6
20250282485
2025-09-11

AIRCRAFT ACOUSTIC PANEL WITH PERFORATED CAVITY WALLS

#7
20250236406
2025-07-24

DISSIMILARLY SHAPED AIRCRAFT NOZZLES WITH TANDEM MIXING DEVICES, AND ASSOCIATED SYSTEMS AND METHODS

#8
20250236386
2025-07-24

ROTORCRAFT WITH POWERPLANT EXHAUST SOUND ATTENUATION

#9
20250230930
2025-07-17

COOLED VARIABLE AREA NOZZLE FOR AN AIRCRAFT ENGINE

#10
20240425192
2024-12-26

TURBO-COMPOUNDED ENGINE WITH EXHAUST DUCT ACOUSTIC ARRANGEMENT

#11
20240367809
2024-11-07

INLET AND OUTLET AIR GEOMETRY AND COMPONENTS TO REDUCE NOISE FROM AN AIRCRAFT COMPONENT ENCLOSURE

#12
20240360793
2024-10-31

ACOUSTIC PANEL WITH ACTIVE IMPEDANCE CONTROL

#13
20240327017
2024-10-03

Exhaust System for Aerial Vehicle

#14
20240253804
2024-08-01

ACOUSTICALLY-TREATED AIR EJECTION NOZZLE FOR A NACELLE

#15
20240217668
2024-07-04

ENGINE EXHAUST CENTER BODY WITH ACOUSTIC ATTENUATION

#16
20240208664
2024-06-27

EXHAUST DUCT FOR HYBRID AIRCRAFT POWERPLANT

#17
20240101264
2024-03-28

REDUCED BULK ACOUSTIC TREATMENT PANEL FOR A TURBOJET ENGINE

#18
20240077046
2024-03-07

EXHAUST CENTERBODY ASSEMBLY

#19
20240034481
2024-02-01

ACTIVE SOUND ATTENUATION FOR AIRCRAFT ELECTRICAL SYSTEM

#20
20230408091
2023-12-21

Cowl assembly for a gas turbine engine

#21
20230365246
2023-11-16

ACOUSTIC PANEL FOR AN AIRCRAFT PROVIDING NOISE ATTENUATION OVER A WIDE FREQUENCY BAND BY COMBINING TWO RESONATORS, AND ACOUSTIC PANEL MANUFACTURING METHOD

#22
20230312121
2023-10-05

ACOUSTIC PANEL COMPRISING AT LEAST TWO CELLULAR STRUCTURES WHICH ARE NESTED ONE INSIDE THE OTHER, AIRCRAFT HAVING AT LEAST ONE SUCH ACOUSTIC PANEL

#23
20230260498
2023-08-17

ACOUSTIC SUPPRESSION SYSTEM

#24
20230234717
2023-07-27

AIRCRAFT CONTROL SYSTEM, AIRCRAFT CONTROL METHOD, AND STORAGE MEDIUM

#25
20230211890
2023-07-06

Multi-core acoustic panel for an aircraft propulsion system

#26
20230203975
2023-06-29

Mixer and mobile body

#27
20230197048
2023-06-22

In-seat active noise cancellation system for moving vehicles

#28
20230175458
2023-06-08

MULTI-CORE ACOUSTIC PANEL FOR AN AIRCRAFT PROPULSION SYSTEM

#29
20230112668
2023-04-13

Dissimilarly shaped aircraft nozzles with tandem mixing devices, and associated systems and methods

#30
20230088770
2023-03-23

Acoustic treatment panel comprising acoustic cells of different volumes obtained from cylindrical and identical main tubes, aircraft comprising such an acoustic treatment panel

#31
20230041941
2023-02-09

METHODS AND SYSTEMS OF MITIGATING HIGH-SPEED JET NOISE

#32
20220389838
2022-12-08

Acoustic structure with floating interior skin

#33
20220380060
2022-12-01

VARIABLE MIXING NOZZLE DESIGN FOR JET NOISE REDUCTION

#34
20220325680
2022-10-13

Thrust reverser cascade including acoustic treatment

#35
20220325678
2022-10-13

LOBED MIXER NOZZLES FOR SUPERSONIC AND SUBSONIC AIRCRAFT, AND ASSOCIATED SYSTEMS AND METHODS

#36
20220275772
2022-09-01

Laminates of polysilazane and carbon fiber reinforced polymer

#37
20220274714
2022-09-01

Muffler

#38
20220268236
2022-08-25

Supersonic aircraft and method of reducing sonic booms and jet noise

#39
20220268178
2022-08-25

Gas turbine system and movable body including the same

#40
20220252021
2022-08-11

Thrust reverser cascade including acoustic treatment

#41
20220243638
2022-08-04

Muffler for small engines

#42
20220220923
2022-07-14

Thrust reverser cascade including acoustic treatment

#43
20220161940
2022-05-26

Aircraft exhaust muffler with a vacuum insulation

#44
20220135216
2022-05-05

Arrowhead aircraft

#45
20220055765
2022-02-24

Exhaust System For Aerial Vehicle

#46
20210371119
2021-12-02

Systems and methods for supressing noise from an aircraft engine

#47
20210262364
2021-08-26

Internal structure of a primary exhaust duct having a separator of which the geometry varies depending on the temperature

#48
20210256947
2021-08-19

ACOUSTIC CORES AND METHODS FOR SPLICING ACOUSTIC CORES

#49
20210102513
2021-04-08

Acoustic attenuation panel for an aircraft jet engine nacelle

#50
20210031935
2021-02-04

Supersonic aircraft and method of reducing sonic booms

#51
20210003074
2021-01-07

Profiled structure and associated turbomachine

#52
20200407051
2020-12-31

Hybrid power tri-propeller helicopter apparatus

#53
20200369402
2020-11-26

Double inlets exhaust system for unmanned aerial vehicle

#54
20200342843
2020-10-29

METHOD FOR MANUFACTURING AN ACOUSTIC ABSORPTION STRUCTURE USING AT LEAST ONE CAUL PLATE, ACOUSTIC ABSORPTION STRUCTURE OBTAINED FROM SAID METHOD AND AIRCRAFT COMPRISING SAID ACOUSTIC ABSORPTION STRUCTURE

#55
20200339243
2020-10-29

Acoustic treatment structure for an aircraft propulsion unit nacelle

#56
20200291891
2020-09-17

Core air flow to equalize temperature differential

#57
20200164998
2020-05-28

Acoustic absorption structure comprising a liquid drainage system and propulsive assembly comprising such an acoustic absorption structure

#58
20200132018
2020-04-30

Laminates of polysilazane and carbon fiber reinforced polymer

#59
20200095938
2020-03-26

Composite aerospace component

#60
20200072161
2020-03-05

LOW-FREQUENCY-SOUND-ABSORBING STRUCTURE FOR A PRIMARY NOZZLE OF A TURBOMACHINE OF AN AIRCRAFT

#61
20190344901
2019-11-14

Optimizing aircraft control based on noise abatement volumes

#62
20190337632
2019-11-07

Aircraft propulsion system assembly including one or more acoustic panels

#63
20190161200
2019-05-30

Acoustic attenuation panel for an aircraft propulsion unit and propulsion unit including such a panel

#64
20190161199
2019-05-30

Acoustic panel with structural septum

#65
20190152618
2019-05-23

Ring of turbojet vanes including an acoustic treatment structure

#66
20190112066
2019-04-18

Structural panel with splice joint between adjacent core structures

#67
20180354636
2018-12-13

Optimizing aircraft control based on noise abatement volumes

#68
20180229829
2018-08-16

Method for forming a structural panel

#69
20180148187
2018-05-31

Acoustic attenuation structure with a plurality of attenuation degrees for a propulsion assembly of an aircraft

#70
20170297733
2017-10-19

Unmanned Helicopter

#71
20170292453
2017-10-12

Acoustic attenuation panel for a turbojet engine nacelle

#72
20170283032
2017-10-05

Aircraft including a wing with improved acoustic treatment

#73
20170240300
2017-08-24

Methods of repairing an acoustic sandwich panel and acoustic sandwich panel repair kits therefor

#74
20170122255
2017-05-04

CHEVRON SYSTEM FOR GAS TURBINE ENGINE

#75
20170113806
2017-04-27

Sound attenuation apparatus and method

#76
20170107909
2017-04-20

Gas ejection duct with acoustic treatment, an aircraft, and a method of fabricating such a duct

#77
20170022904
2017-01-26

Sound attenuation apparatus and method

#78
20170022903
2017-01-26

Sound attenuation apparatus and method

#79
20160368616
2016-12-22

Pylon with noise attenuating fairing

#80
20160368615
2016-12-22

Acoustic panel assembly with a folding chamber

#81
20160318606
2016-11-03

Extremely quiet short take-off and landing (STOL) aircraft

#82
20160222917
2016-08-04

Nacelle for an aircraft engine with variable section nozzle

#83
20160160869
2016-06-09

Plated polymer compressor

#84
20160130011
2016-05-12

Jet noise suppressor

#85
20160076400
2016-03-17

Noise suppression apparatus and methods of manufacturing the same

#86
20160061115
2016-03-03

Core cowl for a turbofan engine

#87
20160001890
2016-01-07

APU exhaust system

#88
20150367953
2015-12-24

Acoustic liner

#89
20150345395
2015-12-03

Turbofan engine with variable exhaust cooling

#90
20150290920
2015-10-15

Method of manufacturing septum cap

#91
20150233298
2015-08-20

REDUCTION IN JET FLAP INTERACTION NOISE WITH GEARED TURBINE ENGINE

#92
20150165872
2015-06-18

Air exhaust device for vehicle body panel

#93
20150108250
2015-04-23

Acoustically treated thrust reverser track beam

#94
20150107225
2015-04-23

Variable immersion lobe mixer for turbofan jet engine exhaust and method of fabricating the same

#95
20140373927
2014-12-25

Low shock strength propulsion system

#96
20140299710
2014-10-09

Hover-capable aircraft

#97
20140097271
2014-04-10

Aircraft engine with an apparatus for pulsating expiration of gas into the exhaust nozzle

#98
20140084080
2014-03-27

Infrared suppressing exhaust system

#99
20130232948
2013-09-12

Noise-reducing engine nozzle system

#100
20130174572
2013-07-11

Method for cooling a thermal protection floor of an aft aerodynamic fairing of a structure for mounting an aircraft propulsion system

#101
20130081900
2013-04-04

Silencer for an auxiliary power unit of an aircraft

#102
20130062424
2013-03-14

Low shock strength propulsion system

#103
20130056553
2013-03-07

Turbojet engine outlet lobe mixer with guiding protrusions, and method of mixing airflows

#104
20130043343
2013-02-21

Method of processing acoustic waves emitted at the outlet of a turbo engine of an aircraft with a dielectric-barrier discharge device and aircraft comprising such a device

#105
20130032663
2013-02-07

Device for reducing noise from jet-pylon interactions on jet engines

#106
20130009002
2013-01-10

Turboshaft engine supporting pylon covered with a porous material and turboshaft engine/pylon assembly

#107
20130001009
2013-01-03

Eductor exhaust silencer assembly with bypass gasflow

#108
20120273611
2012-11-01

Exhaust silencer with baffles

#109
20120193441
2012-08-02

Aircraft engine nozzle

#110
20120186224
2012-07-26

Aircraft jet engine comprising a system for reducing the noise generated by the ejection of the gases

#111
20120151899
2012-06-21

Morphing structure and method

#112
20120061510
2012-03-15

Aircraft engine exhaust nozzle system for jet noise reduction

#113
20120055735
2012-03-08

Acoustic attenuation method based on acoustic ray deflection theory and a muffler

#114
20120031520
2012-02-09

Insulation assembly for use with an auxiliary power unit having an exhaust muffler

#115
20110303786
2011-12-15

Silencer for an auxiliary power unit of an aircraft

#116
20110268560
2011-11-03

Gas turbine engine

#117
20110203254
2011-08-25

Gas ejection cone for an aircraft turbojet equipped with a device for generating turbulence in a primary flow limiting jet noise

#118
20110108357
2011-05-12

Acoustic panel for an ejector nozzle

#119
20110005858
2011-01-13

Noise-reduced aircraft engine and method for reducing noise emissions of an aircraft engine

#120
20100326060
2010-12-30

Device and method for controlling vortex structures in a turbulent air jet

#121
20100276225
2010-11-04

Apparatus and method for improving the damping of acoustic waves

#122
20100264261
2010-10-21

AIRCRAFT DRAG MANAGEMENT STRUCTURE

#123
20100247304
2010-09-30

Exhaust plenum for a turbine engine

#124
20100175383
2010-07-15

Dilating fan duct nozzle

#125
20100170261
2010-07-08

Engine noise

#126
20100043389
2010-02-25

Low shock strength propulsion system

#127
20100031628
2010-02-11

Jet flow discharge nozzle and jet engine

#128
20100018212
2010-01-28

Dilating fan duct nozzle

#129
20100011777
2010-01-21

Morphing structure and method

#130
20100006697
2010-01-14

LOW NOISE AIRCRAFT

#131
20090314885
2009-12-24

System, method and apparatus for fluidic effectors for enhanced fluid flow mixing

#132
20090107557
2009-04-30

Low shock strength inlet

#133
20090084889
2009-04-02

Aircraft having a reduced acoustic signature

#134
20090057493
2009-03-05

Noise-shielding wing configuration

#135
20080272228
2008-11-06

Jet engine nozzle exit configurations, including projections oriented relative to pylons, and associated systems and methods

#136
20080236939
2008-10-02

Exhaust silencer assembly

#137
20080217101
2008-09-11

Turboshaft engine that reduces rear noise emissions

#138
20080190096
2008-08-14

Fluid mixer with an integral fluid capture ducts forming auxiliary secondary chutes at the discharge end of said ducts

#139
20080185216
2008-08-07

Helicopter gas turbine engine with sound level lowered by ejector hush kitting

#140
20080120979
2008-05-29

Morphing structure

#141
20080078863
2008-04-03

Thermally compliant APU exhaust duct arrangements and associated systems and methods

#142
20080078159
2008-04-03

Wet active chevron nozzle for controllable jet noise reduction

#143
20080060343
2008-03-13

Asymmetric serrated nozzle for exhaust noise reduction

#144
20070246604
2007-10-25

Integrated engine exhaust systems and methods for drag and thermal stress reduction

#145
20060207826
2006-09-21

Composite muffler for use with airborne auxiliary power unit

#146
20060101807
2006-05-18

Morphing structure

#147
20060043236
2006-03-02

Integrated axially varying engine muffler, and associated methods and systems

#148
20050172611
2005-08-11

Sinuous chevron exhaust nozzle

#149
20050103933
2005-05-19

Variable cam exhaust nozzle

#150
15626012
2020-07-28

High flow plug nozzle apparatus and method of using the same

#151
15153442
2017-08-15

Broadband acoustic panels coupled with large secondary cavities to attenuate low frequencies

#152
15130398
2017-07-11

Acoustic panel with corrugated baffles and septums

#153
15052097
2017-05-23

Methods of repairing an acoustic sandwich panel and acoustic sandwich panel repair kits therefor

#154
14708382
2016-10-18

Acoustic structures with multiple degrees of freedom