ClassID:

72024

B64C21/06 - CPC Classification

Classification description:

Influencing air-flow over aircraft surfaces by affecting boundary-layer flow by use of slot, ducts, porous areas, or the like for sucking

Recent Application in this class:
#1
20260138733
2026-05-21

APPARATUS FOR INGESTING BOUNDARY LAYER FLOW FOR AN AIRCRAFT

#2
20250353382
2025-11-20

PROPULSION SYSTEM FOR AN AIRCRAFT

#3
20250319960
2025-10-16

BLADE TIP VORTEX CONTROL

#4
20250214698
2025-07-03

AIRCRAFT AIRFRAME COMPONENT WITH AIR SYSTEM

#5
20250162709
2025-05-22

AIRCRAFT VERTICAL STABILIZER WITH AIR SYSTEM

#6
20240417082
2024-12-19

DRAG RECOVERY SCHEME USING BOUNDARY LAYER INGESTION

#7
20240286740
2024-08-29

AIRCRAFT

#8
20240253773
2024-08-01

Apparatus for ingesting boundary layer flow for an aircraft

#9
20240166340
2024-05-23

MAGNUS-EFFECT AIRCRAFT AND OPERATING METHOD THEREOF

#10
20240109646
2024-04-04

METHODS FOR OPTIMIZING BOUNDARY LAYER CONTROL (BLC) SYSTEMS AND RELATED SYSTEMS

#11
20240092494
2024-03-21

Propulsion System for an Aircraft

#12
20230323791
2023-10-12

Flow control mechanism for nacelle of turbofan engine

#13
20230294820
2023-09-21

Leading edge structure for a flow control system of an aircraft

#14
20230294819
2023-09-21

Leading edge structure for a flow control system of an aircraft

#15
20230166832
2023-06-01

Aircraft boundary layer ingestion using multiple fans and associated methods

#16
20230137457
2023-05-04

BLADE TIP VORTEX CONTROL

#17
20230075112
2023-03-09

Deflected Slip Stream Wing System with Coflow Jet Flow Control

#18
20230009263
2023-01-12

BOUNDARY LAYER SUCTION DESIGN BY USING A CORE OF A WINGTIP VORTEX FOR A LIFT-GENERATING BODY

#19
20220363370
2022-11-17

DRAG MODIFICATION SYSTEMS FOR AIRCRAFT AND RELATED METHODS

#20
20220290676
2022-09-15

CROSS FLOW FAN, LIFT GENERATION DEVICE PROVIDED WITH SAME, AND AIRCRAFT PROVIDED WITH SAME

#21
20220274688
2022-09-01

Active drag control system for an aircraft

#22
20220274687
2022-09-01

Propulsion unit with improved boundary layer ingestion

#23
20220234746
2022-07-28

Gas-electric propulsion system for an aircraft

#24
20220212805
2022-07-07

Ice protection and boundary layer suction system for an aircraft aerofoil

#25
20220097829
2022-03-31

Performance evaluation system of an aircraft component

#26
20220073199
2022-03-10

Tiltrotor propulsion system for an aircraft

#27
20220048612
2022-02-17

Leading edge structure for a flow control system of an aircraft

#28
20220041289
2022-02-10

Apparatus and method for heating an aircraft structure

#29
20210394917
2021-12-23

Flush fluid inlet designs for aero-acoustic tone mitigation of aircraft

#30
20210316844
2021-10-14

Flow control techniques for delaying or accelerating laminar-turbulent boundary-layer transition for high-speed flight vehicles

#31
20210284352
2021-09-16

Mechanically-distributed propulsion drivetrain and architecture

#32
20210261238
2021-08-26

Dual door stall correction mechanism

#33
20210239046
2021-08-05

Cooling system for power cables in a gas turbine engine

#34
20210188455
2021-06-24

Method for managing the propulsive power of an aircraft

#35
20210107631
2021-04-15

Nacelle for an aircraft aft fan

#36
20200369376
2020-11-26

Airfoil for flow control including a common inlet/outlet device connected to a porous section

#37
20200339248
2020-10-29

BOUNDARY LAYER SUCTION DESIGN BY USING WINGTIP VORTEX FOR A LIFT-GENERATING BODY

#38
20200331622
2020-10-22

Propulsion engine for an aircraft

#39
20200331591
2020-10-22

Drag recovery scheme for nacelles

#40
20200324906
2020-10-15

Propulsion system for an aircraft

#41
20200318542
2020-10-08

Engine inlet with deployable particle separator

#42
20200290730
2020-09-17

Aircraft structure for flow control

#43
20200283158
2020-09-10

Aerofoil leading edge structures

#44
20200223554
2020-07-16

Meredith Effect Boundary Layer Energisation System

#45
20200189724
2020-06-18

System to promote accelerated boundary layer ingestion

#46
20200156769
2020-05-21

Boundary layer ingestion fan system

#47
20200156768
2020-05-21

Boundary layer ingestion fan system

#48
20200156767
2020-05-21

Boundary layer ingestion fan system

#49
20200122849
2020-04-23

Gas-electric propulsion system for an aircraft

#50
20200108915
2020-04-09

ENGINE ASSEMBLY WITH POROUS SURFACE OF BOUNDARY LAYER SUCTION

#51
20200102084
2020-04-02

Active laminar flow control plenum panel arrangements and installation methods

#52
20200102083
2020-04-02

Active laminar flow control plenum panel arrangement

#53
20200102082
2020-04-02

Active laminar flow control structural plenums fastened

#54
20200085988
2020-03-19

Tiltrotor propulsion system for an aircraft

#55
20200070995
2020-03-05

Mechanically-distributed propulsion drivetrain and architecture

#56
20200070962
2020-03-05

Method for separated flow detection

#57
20200055591
2020-02-20

Aerodynamic body having perforated skin

#58
20200031455
2020-01-30

Flow body of an aircraft and aircraft

#59
20200010189
2020-01-09

TRANSVERSE FAN PROPULSION SYSTEM

#60
20200010175
2020-01-09

Active laminar flow control system with composite panel

#61
20190329896
2019-10-31

Aft engine nacelle shape for an aircraft

#62
20190329871
2019-10-31

APPARATUS AND SYSTEM FOR DRAG REDUCTION

#63
20190322377
2019-10-24

Electric propulsion engine for an aircraft

#64
20190283866
2019-09-19

Leading edge structure for a flow control system of an aircraft

#65
20190263529
2019-08-29

Apparatus and method for heating an aircraft structure

#66
20190202566
2019-07-04

Leading edge structure for a flow control system of an aircraft

#67
20190176971
2019-06-13

Deployable assembly for a propulsor

#68
20190135409
2019-05-09

Wing comprising a leading edge slat and having means for preventing the transition to a turbulent boundary layer

#69
20190118923
2019-04-25

Apparatus for laminar flow control

#70
20190107039
2019-04-11

Active control flow system and method of cooling and providing active flow control

#71
20190084692
2019-03-21

Wing comprising a leading edge having means for preventing the clogging of holes produced in the leading edge

#72
20190031363
2019-01-31

System and method for operating a boundary layer ingestion fan

#73
20180339765
2018-11-29

Dedicated fans for boundary layer ingestion

#74
20180305036
2018-10-25

Propulsion system for an aircraft

#75
20180304753
2018-10-25

Propulsion system for an aircraft

#76
20180298829
2018-10-18

Variable-geometry boundary layer diverter

#77
20180281931
2018-10-04

Electric propulsion system for an aircraft

#78
20180269760
2018-09-20

Electrical machine

#79
20180265208
2018-09-20

AIR INTAKE STRUCTURE AND AIRFLOW CONTROL SYSTEM

#80
20180257787
2018-09-13

Gas-electric propulsion system for an aircraft

#81
20180244370
2018-08-30

PASSIVE FLOW CONTROL MECHANISM FOR SUPPRESSING TOLLMIEN-SCHLICHTING WAVES, DELAYING TRANSITION TO TURBULENCE AND REDUCING DRAG

#82
20180237126
2018-08-23

Propulsor

#83
20180230945
2018-08-16

Aircraft comprising a rear fairing propulsion system with inlet stator comprising a blowing function

#84
20180208297
2018-07-26

NACELLE FOR AN AIRCRAFT AFT FAN

#85
20180201362
2018-07-19

AIRCRAFT WITH A VARIABLE FUSELAGE SURFACE FOR BOUNDARY LAYER OPTIMIZATION

#86
20180194457
2018-07-12

System for dual management of anti-icing and boundary layer suction on an aerofoil of an aircraft, including a function of collecting the anti-icing air

#87
20180155045
2018-06-07

Cross flow fan for wide aircraft fuselage

#88
20180134373
2018-05-17

Integral component with an active flow control device

#89
20180127089
2018-05-10

Turboelectric Aircraft with Aft Propulsion

#90
20180118331
2018-05-03

Air distribution system with drag reducing inlet

#91
20180111676
2018-04-26

Motor driven cooled compressor system

#92
20180093777
2018-04-05

Translating nacelle wall for an aircraft tail mounted fan section

#93
20180093776
2018-04-05

Nacelle for an aircraft aft fan

#94
20180086438
2018-03-29

Aircraft having an AFT engine and stabilizer with a varying line of maximum thickness

#95
20180086437
2018-03-29

Aircraft having an aft engine and internal flow passages

#96
20180086436
2018-03-29

Aircraft having an aft engine and stabilizer root fillet

#97
20180065743
2018-03-08

Tiltrotor propulsion system for an aircraft

#98
20180065742
2018-03-08

Tiltrotor propulsion system for an aircraft

#99
20180057182
2018-03-01

AFT engine nacelle shape for an aircraft

#100
20180057181
2018-03-01

Nacelle for an aircraft aft fan

#101
20180057150
2018-03-01

Deployable assembly for a propulsor

#102
20180051716
2018-02-22

Thermal management system for an electric propulsion engine

#103
20180050811
2018-02-22

Propulsion engine for an aircraft

#104
20180050810
2018-02-22

Propulsion engine for an aircraft

#105
20180045205
2018-02-15

Inlet guide vane assembly for reducing airflow swirl distortion of an aircraft aft fan

#106
20180043997
2018-02-15

Inlet assembly for an aircraft aft fan

#107
20180043996
2018-02-15

Inlet assembly for an aircraft aft fan

#108
20180016000
2018-01-18

Aircraft having an airflow duct

#109
20170349268
2017-12-07

Distributed compressor for improved integration and performance of an active fluid flow control system

#110
20170341736
2017-11-30

Apparatus, system and method for drag reduction

#111
20170292523
2017-10-12

Electric propulsion engine for an aircraft

#112
20170291693
2017-10-12

ELECTRIC PROPULSION ENGINE FOR AN AIRCRAFT

#113
20170268409
2017-09-21

Active control flow system and method of cooling and providing active flow control

#114
20170259903
2017-09-14

Method, injection moulding tool for manufacturing a leading edge section with hybrid laminar flow control for an aircraft, and leading edge section with hybrid laminar flow control obtained thereof

#115
20170240271
2017-08-24

Control of hypersonic boundary layer transition

#116
20170217569
2017-08-03

System for the dual management of anti-icing and boundary-layer suction on an aerofoil of an aircraft

#117
20170217568
2017-08-03

Flow body for an aircraft for passive boundary layer suction

#118
20170197706
2017-07-13

Leading edge with laminar flow control and manufacturing method thereof

#119
20170174325
2017-06-22

Aircraft or spacecraft fluidic oscillator device

#120
20170121031
2017-05-04

Aircraft

#121
20170101191
2017-04-13

Aft engine for an aircraft

#122
20170081037
2017-03-23

AFT engine nacelle shape for an aircraft

#123
20170081036
2017-03-23

Non-axis symmetric aft engine

#124
20170081035
2017-03-23

Aft engine for an aircraft

#125
20170081034
2017-03-23

Aft engine for an aircraft

#126
20170081020
2017-03-23

ACTIVE LAMINAR FLOW CONTROL SYSTEM WITH DRAINAGE

#127
20160375988
2016-12-29

Multi-zone active laminar flow control system for an aircraft propulsion system

#128
20160332724
2016-11-17

Heat exchanger for laminar-flow aircraft

#129
20160311520
2016-10-27

Optimized nacelle profile and plenum shape for boundary layer ingestion active laminar flow control

#130
20160298574
2016-10-13

Combined inlet laminar and thrust reverser cascade efflux flow control system

#131
20160214727
2016-07-28

Gas-electric propulsion system for an aircraft

#132
20160159465
2016-06-09

Laminar flow panel

#133
20160159464
2016-06-09

Aircraft wing rib

#134
20160152334
2016-06-02

Propulsion system for an aerial vehicle

#135
20160144949
2016-05-26

Method of controlling boundary layer flow

#136
20160137292
2016-05-19

Aerodynamic component and method for producing an aerodynamic component

#137
20160137291
2016-05-19

Modular plenum and duct system for controlling boundary layer airflow

#138
20160107746
2016-04-21

Perforated surface for suction-type laminar flow control

#139
20160075435
2016-03-17

Aircraft environmental control system air duct arrangement

#140
20160009391
2016-01-14

Stable Low Aspect Ratio Flying Wing

#141
20150360766
2015-12-17

Leading edge nose structure on the vertical stabilizer of an aircraft

#142
20150307183
2015-10-29

Aircraft environmental control system selectively powered by three bleed ports

#143
20150191244
2015-07-09

Aircraft wing with system establishing a laminar boundary layer flow

#144
20150183513
2015-07-02

Flow body, method for manufacturing a flow body and aircraft having such a flow body

#145
20150083866
2015-03-26

Apparatus and methods to operate laminar flow control doors

#146
20150083258
2015-03-26

Apparatus and methods for extending hybrid laminar flow control

#147
20150050147
2015-02-19

Active bleed for airfoils

#148
20140326834
2014-11-06

Laminar flow panel

#149
20140061387
2014-03-06

Surface element for an aircraft, aircraft and method for improving high-lift generation on a surface element

#150
20140021304
2014-01-23

Profile plate portion for use as an outer wall of a flow body, method for manufacturing a profile plate portion and flow body component comprising a suction-extraction device for fluid

#151
20130277502
2013-10-24

Flow body having a leading edge, a surface and an active flow control system and vehicle comprising at least one such flow body and an air source

#152
20130270390
2013-10-17

Aircraft having an aircraft fuselage and an air sucking fuselage component

#153
20130240676
2013-09-19

High lift system for an aircraft

#154
20130175402
2013-07-11

Air sucking vehicle tail section component or wing section component, method for producing an air sucking vehicle tail section component and a wing section component and a vehicle, especially an aircraft, with an air sucking vehicle tail section component or wing section component

#155
20130048794
2013-02-28

Wing leading edge venting

#156
20130025727
2013-01-31

Flow body, in particular for aircraft

#157
20120292441
2012-11-22

System and method for reducing the noise of pusher type aircraft propellers

#158
20120187252
2012-07-26

Device for boundary layer suction and composite component therefor

#159
20120037760
2012-02-16

Laminar flow panel

#160
20120001028
2012-01-05

Wing of an aircraft and assembly of a wing comprising a device for influencing a flow

#161
20110017426
2011-01-27

Aircraft cooling system

#162
20100294892
2010-11-25

Device for reducing the aerodynamic drag of a leading surface of an aircraft

#163
20100078522
2010-04-01

Apparatus, system and method for drag reduction

#164
20090289150
2009-11-26

Boundary layer control system and methods thereof

#165
20090266937
2009-10-29

Reduction of frictional losses in the region of boundary layers on surfaces, around which a fluid flows

#166
20090212165
2009-08-27

Passive removal of suction air for laminar flow control, and associated systems and methods

#167
20090194640
2009-08-06

Apparatus system and method for drag reduction

#168
20080023590
2008-01-31

Boundary layer pumped propulsion system for vehicles

#169
20070266707
2007-11-22

Boundary layer suction arrangement

#170
20070113403
2007-05-24

Method for increasing a blade performance (variants)

#171
20070029450
2007-02-08

Flow surface for a three-dimensional boundary-layer flow, especially on a swept wing, a swept tail plane or a rotor

#172
20060266882
2006-11-30

Cross-flow fan propulsion system

#173
20060060723
2006-03-23

Simultaneous multiple-location separation control

#174
20050178924
2005-08-18

Perforated skin structure for laminar-flow systems

#175
20050081530
2005-04-21

Arrangement for bleeding the boundary layer from an aircraft engine

#176
20050045774
2005-03-03

Laminar flow nacelle for an aircraft engine

#177
18102342
2023-11-28

Apparatus for ingesting boundary layer flow for an aircraft

#178
17567244
2022-07-26

Y-shaped airliner and associated methods

#179
14218819
2017-07-11

Parasitic drag induced boundary layer reduction system and method