ClassID:

72025

B64C21/08 - 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 adjustable

Recent Application in this class:
#1
20260103302
2026-04-16

Offset Drag Reduction Device

#2
20260054863
2026-02-26

Offset Drag Reduction Device

#3
20250319960
2025-10-16

BLADE TIP VORTEX CONTROL

#4
20250290529
2025-09-18

ADJUSTABLE FLOW CONTROL SYSTEMS

#5
20250282473
2025-09-11

AERIAL VEHICLE FLUID CONTROL SYSTEM WITH MULTI-WAY FLOW REGULATOR

#6
20250223982
2025-07-10

Pneumatic System Flow Balancing Architecture and Method

#7
20250214698
2025-07-03

AIRCRAFT AIRFRAME COMPONENT WITH AIR SYSTEM

#8
20240294249
2024-09-05

Machine and process for activation of flow control device

#9
20240262517
2024-08-08

Aircraft Electric Motor Cooling System

#10
20240246661
2024-07-25

Flow control ducted fans

#11
20240150026
2024-05-09

FLUIDIC PROPULSIVE SYSTEM

#12
20240116625
2024-04-11

AIRFOIL WITH AUGMENTED LIFT

#13
20240076034
2024-03-07

Aerial vehicle fluid control system with multi-way flow regulator

#14
20240076033
2024-03-07

Aerial vehicle fluid control system integrated with gas turbine engine

#15
20240068495
2024-02-29

ADJUSTABLE FLOW CONTROL SYSTEMS

#16
20240067348
2024-02-29

Hybrid electric hydrogen fuel cell engine

#17
20240043111
2024-02-08

AN AIRCRAFT WING PROVIDED WITH A TRAILING EDGE REGION

#18
20230294820
2023-09-21

Leading edge structure for a flow control system of an aircraft

#19
20230294819
2023-09-21

Leading edge structure for a flow control system of an aircraft

#20
20230272810
2023-08-31

Arrangement for influencing liquid flow and a method

#21
20230264807
2023-08-24

Arrangement for influencing liquid flow and a method

#22
20230219681
2023-07-13

Rotating airfoil assembly with opening formed therein to eject or to draw air

#23
20230166831
2023-06-01

Aerodynamic control surface

#24
20230137457
2023-05-04

BLADE TIP VORTEX CONTROL

#25
20230106444
2023-04-06

Control system for an aircraft and a method of operating the control system

#26
20220349391
2022-11-03

Variable-porosity panel systems and associated methods

#27
20220315208
2022-10-06

Vehicle control

#28
20220297844
2022-09-22

Hybrid electric hydrogen fuel cell engine

#29
20220297823
2022-09-22

Braking force generation device, wing, and aircraft

#30
20220194563
2022-06-23

Stall trigger system

#31
20220169362
2022-06-02

Aircraft drag reduction system including an internally cooled motor system and aircraft using same

#32
20220097829
2022-03-31

Performance evaluation system of an aircraft component

#33
20220063796
2022-03-03

Aircraft equipped with a distributed propulsion system having suction and pressure fans

#34
20220048612
2022-02-17

Leading edge structure for a flow control system of an aircraft

#35
20220017209
2022-01-20

Flap pressure shape biasing

#36
20220017207
2022-01-20

Methods and apparatus for accelerating an aircraft fuselage boundary layer via a fan powered by an auxiliary power unit of the aircraft

#37
20220017206
2022-01-20

Fairing for folding wing tip

#38
20210380228
2021-12-09

Gas sensing for fixed wing drones using scoops

#39
20210362840
2021-11-25

Active flow control systems and methods for aircraft

#40
20210300540
2021-09-30

Ducted fans having fluidic thrust vectoring

#41
20210300539
2021-09-30

Ducted fans having edgewise flow augmentation

#42
20210300538
2021-09-30

Fluidic roll control systems for use in forward flight

#43
20210300532
2021-09-30

Fluidic split flap systems for yaw control in forward flight

#44
20210300531
2021-09-30

Fluidic yaw control systems for use in hover

#45
20210300530
2021-09-30

Fluidic roll control systems for use in hover

#46
20210214072
2021-07-15

Vertical tail unit for flow control

#47
20200407043
2020-12-31

Axial flow ducted fan with a movable section

#48
20200391853
2020-12-17

Flow control systems having movable slotted plates

#49
20200369376
2020-11-26

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

#50
20200189724
2020-06-18

System to promote accelerated boundary layer ingestion

#51
20200148335
2020-05-14

SYSTEMS AND METHODS FOR ACTIVE CONTROL OF SURFACE DRAG

#52
20200130816
2020-04-30

Apparatus, aircraft and method for moving a wing tip device away from a load-alleviating configuration

#53
20200102066
2020-04-02

Flow guide body for an aircraft

#54
20200096023
2020-03-26

Phase tailoring for resonant flow devices

#55
20200072259
2020-03-05

Methods and apparatus for controlling flow fields

#56
20200055591
2020-02-20

Aerodynamic body having perforated skin

#57
20200047875
2020-02-13

Methods, systems, and apparatuses for in-line variably porous surfaces

#58
20200031456
2020-01-30

Systems and methods for active control of surface drag

#59
20200025225
2020-01-23

Swirling jet actuator for control of separated and mixing flows

#60
20190337630
2019-11-07

Aircraft having an aft engine

#61
20190337609
2019-11-07

Fluid systems that include a co-flow jet

#62
20190329859
2019-10-31

Aircraft drag reduction system and internally cooled motor system and aircraft using same

#63
20190329858
2019-10-31

Aircraft drag reduction system and internally cooled electric motor system and aircraft using same

#64
20190315459
2019-10-17

AERODYNAMICS INFLUENCING DEVICE FOR AN AIRCRAFT AND AIRCRAFT

#65
20190283866
2019-09-19

Leading edge structure for a flow control system of an aircraft

#66
20190248475
2019-08-15

Active flow control systems and methods for aircraft

#67
20190176971
2019-06-13

Deployable assembly for a propulsor

#68
20190136881
2019-05-09

Methods and apparatus for controlling flow fields

#69
20190107039
2019-04-11

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

#70
20190106202
2019-04-11

Vertical tail unit for flow control

#71
20190106201
2019-04-11

Vertical tail unit for flow control

#72
20190055006
2019-02-21

Embedded engines in hybrid blended wing body

#73
20190024608
2019-01-24

Acoustic cavity tailored synthetic jet

#74
20180346108
2018-12-06

Active flow control for ducted fans and fan-in-wing configurations

#75
20180339784
2018-11-29

Variable geometry engine inlet for high speed aircraft

#76
20180334247
2018-11-22

Aircraft and flight control mechanisms used on aircraft

#77
20180334246
2018-11-22

Flight control mechanisms and methods of operating aircraft with flight control mechanisms

#78
20180265208
2018-09-20

AIR INTAKE STRUCTURE AND AIRFLOW CONTROL SYSTEM

#79
20180231032
2018-08-16

Phase tailoring for resonant flow devices

#80
20180209452
2018-07-26

Swirling jet actuator for control of separated and mixing flows

#81
20180201361
2018-07-19

Lifting surface

#82
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

#83
20180170526
2018-06-21

Methods and apparatus to extend a leading-edge vortex of a highly-swept aircraft wing

#84
20180155013
2018-06-07

Aircraft airflow modification device and vortex generator arrangement for an aircraft

#85
20180148164
2018-05-31

Lifting surface of an aircraft for increasing the generated lift force

#86
20180134373
2018-05-17

Integral component with an active flow control device

#87
20180105258
2018-04-19

Method and system for delaying laminar-to-turbulent transition in high-speed boundary layer flow

#88
20180093758
2018-04-05

LOAD ALLEVIATION OF A STRUCTURE IN A FLUID FLOW

#89
20180079514
2018-03-22

Aircraft having an aft engine

#90
20180079489
2018-03-22

Airfoil for an aircraft having reduced noise generation

#91
20180057150
2018-03-01

Deployable assembly for a propulsor

#92
20180043995
2018-02-15

Active flow control systems and methods for aircraft

#93
20170361918
2017-12-21

Active flow control devices for aircraft wings

#94
20170355451
2017-12-14

Fluid systems that include a co-flow jet

#95
20170349268
2017-12-07

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

#96
20170313411
2017-11-02

Synchronization of fluidic actuators

#97
20170291688
2017-10-12

High-lift device of air vehicle

#98
20170268409
2017-09-21

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

#99
20170240271
2017-08-24

Control of hypersonic boundary layer transition

#100
20170174325
2017-06-22

Aircraft or spacecraft fluidic oscillator device

#101
20170081022
2017-03-23

Cooperative actuator system for active flow control

#102
20170066527
2017-03-09

Variable geometry flush boundary diverter

#103
20170056913
2017-03-02

Cancelling damping induced by drag in synthetic jets using performance enhancements

#104
20170016462
2017-01-19

Swirling jet actuator for control of separated and mixing flows

#105
20170001715
2017-01-05

Tile assembly

#106
20160375986
2016-12-29

Method and apparatus for robust lift generation

#107
20160298599
2016-10-13

Load compensating devices

#108
20160298574
2016-10-13

Combined inlet laminar and thrust reverser cascade efflux flow control system

#109
20160280358
2016-09-29

Hybrid flow control method for simple hinged flap high-lift system

#110
20160272301
2016-09-22

Methods and apparatus for robust lift generation

#111
20160200422
2016-07-14

Multiple controllable airflow modification devices

#112
20160185449
2016-06-30

Fluid-vectoring system

#113
20160152334
2016-06-02

Propulsion system for an aerial vehicle

#114
20160068257
2016-03-10

BOUNDARY LAYER CONTROL FOR THICKNESS AND CAMBER MORPHING OF AERODYNAMIC SURFACES

#115
20160009377
2016-01-14

Positionable ejector member for ejector enhanced boundary layer alleviation

#116
20160009374
2016-01-14

System and method for distributed active fluidic bleed control

#117
20150369266
2015-12-24

Flow control actuator with an adjustable frequency

#118
20150191244
2015-07-09

Aircraft wing with system establishing a laminar boundary layer flow

#119
20150158577
2015-06-11

Air ejection device comprising an aerodynamic profile provided with a slot obturating flexible tongue

#120
20150104310
2015-04-16

Frequency response and health tracker for a synthetic jet generator

#121
20150097467
2015-04-09

Strain amplification structure and synthetic jet actuator

#122
20150083866
2015-03-26

Apparatus and methods to operate laminar flow control doors

#123
20150053825
2015-02-26

High-lift device of air vehicle

#124
20150050147
2015-02-19

Active bleed for airfoils

#125
20150008292
2015-01-08

Flow control structure and associated method for controlling attachment with a control surface

#126
20140348668
2014-11-27

Bellows synthetic jet

#127
20140312166
2014-10-23

Helicopter and aircraft power device

#128
20140284430
2014-09-25

Synchronization of fluidic actuators

#129
20140103134
2014-04-17

Externally driven flow control actuator

#130
20140102542
2014-04-17

Flow control actuator with an adjustable frequency

#131
20140091180
2014-04-03

Systems and methods for attenuation of noise and wakes produced by aircraft

#132
20130336820
2013-12-19

Strain amplification structure and synthetic jet actuator

#133
20130327879
2013-12-12

High speed compound rotary wing aircraft

#134
20130284294
2013-10-31

Fluid actuator for influencing the flow along a flow surface, as well as blow-out device and flow body comprising a like fluid actuator

#135
20130284273
2013-10-31

Method of using an active flow control system for lift enhancement or destruction in a wind turbine blade

#136
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

#137
20130240676
2013-09-19

High lift system for an aircraft

#138
20130187009
2013-07-25

Aircraft with wings and a system for minimizing the influence of unsteady flow states

#139
20130037658
2013-02-14

Aircraft with a control device

#140
20120299446
2012-11-29

Autonomous power generation unit for auxiliary system on an airborne platform

#141
20120280088
2012-11-08

Method of laminar flow control using a door assembly

#142
20120256049
2012-10-11

Systems and methods for attenuation of noise and wakes produced by aircraft

#143
20120223190
2012-09-06

Aerodynamic body, regulating flap or main wing or fin of an aircraft as well as a structural component with such an aerodynamic body

#144
20120222768
2012-09-06

System for global flow field management using distributed, surface-embedded, nano-scale boundary layer actuation

#145
20120104794
2012-05-03

Base drag reduction for road vehicles and ‘airdrop’ cargo aircraft

#146
20120068011
2012-03-22

Active aircraft pylon noise control system

#147
20120043428
2012-02-23

High-lift flap, arrangement of a high-lift flap together with a device for influencing the flow on the same and aircraft comprising said arrangement

#148
20120001028
2012-01-05

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

#149
20110103969
2011-05-05

Boundary layer energiser

#150
20110100475
2011-05-05

Boundary layer energiser

#151
20110024574
2011-02-03

Aerodynamic body and high-lift system comprising such an aerodynamic body

#152
20100270433
2010-10-28

Method and system for global flow field management using distributed, surface-embedded, nano-scale boundary layer actuation

#153
20100243819
2010-09-30

DEVICE FOR DELAYING BOUNDARY LAYER SEPARATION

#154
20100229952
2010-09-16

Dual bimorph synthetic pulsator

#155
20100181435
2010-07-22

Door assembly for laminar flow control system

#156
20100181434
2010-07-22

Apparatus and method for passive purging of micro-perforated aerodynamic surfaces

#157
20100176692
2010-07-15

Autonomous power generation unit for auxiliary system on an airborne platform

#158
20100116943
2010-05-13

Aircraft component exposed to streaming surrounding air

#159
20090321580
2009-12-31

Vernier active flow control effector

#160
20090294596
2009-12-03

Method of Reducing Drag and Increasing Lift Due to Flow of a Fluid Over Solid Objects

#161
20090289150
2009-11-26

Boundary layer control system and methods thereof

#162
20090261204
2009-10-22

System and method for varying the porosity of an aerodynamic surface

#163
20090014593
2009-01-15

Cooling system on the basis of suction of a boundary layer

#164
20080173766
2008-07-24

HIGH LIFT DISTRIBUTED ACTIVE FLOW CONTROL SYSTEM AND METHOD

#165
20080149205
2008-06-26

SYSTEM AND METHOD FOR REDUCING WAKE

#166
20070266707
2007-11-22

Boundary layer suction arrangement

#167
20070228222
2007-10-04

Method of improving lift of an aircraft wing

#168
20070221788
2007-09-27

Aircraft component exposed to streaming surrounding air

#169
20070095987
2007-05-03

Airfoil performance modification using synthetic jet actuators

#170
20070020099
2007-01-25

Noise reduction of aircraft flap

#171
20060273197
2006-12-07

Dual bimorph synthetic pulsator

#172
20060102801
2006-05-18

High-lift distributed active flow control system and method

#173
20060060723
2006-03-23

Simultaneous multiple-location separation control

#174
20060027711
2006-02-09

Vernier active flow control effector

#175
20060006290
2006-01-12

Vorticity cancellation at trailing edge for induced drag elimination

#176
18778637
2026-02-24

Offset drag reduction device

#177
17519359
2023-01-10

Aircraft airfoil having an internal thrust unit, and aircraft having the same

#178
17495884
2024-07-23

Micro-cavity actuator for delay of dynamic stall

#179
15425964
2022-05-24

Flow separation control device for an airfoil

#180
15425943
2022-10-18

System to control flow separation over an airfoil

#181
15259949
2019-04-16

Rolling vortex wing slat system and method of use

#182
14930712
2017-04-04

Wide fuselage aircraft with increased boundary layer ingestion