ClassID:

72021

B64C21/02 - 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

Sub-classes:
Recent Application in this class:
#1
20250236386
2025-07-24

ROTORCRAFT WITH POWERPLANT EXHAUST SOUND ATTENUATION

#2
20250010987
2025-01-09

FAN APPARATUS WITH LIFT FAN AND LOUVERED COVER

#3
20240400214
2024-12-05

Exhaust Airflow System

#4
20240391582
2024-11-28

AIRCRAFT LIFTING SURFACE AND AIRCRAFT COMPRISING SUCH LIFTING SURFACE

#5
20240300637
2024-09-12

FLIGHT VEHICLE

#6
20240218809
2024-07-04

Engine strut flow control

#7
20240150037
2024-05-09

AEROELASTIC ADJUSTMENT USING FLUTTER VECTOR STRAIN ENERGY

#8
20240124131
2024-04-18

AIRCRAFT GENERATING LARGER THRUST AND LIFT BY FLUID CONTINUITY

#9
20240109646
2024-04-04

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

#10
20230323791
2023-10-12

Flow control mechanism for nacelle of turbofan engine

#11
20230303264
2023-09-28

AIRCRAFT WITH RAM AIR TURBINE DISK WITH GENERATOR HAVING BLADE TIP INTEGRATED MAGNETS

#12
20230286647
2023-09-14

Leading edge slat

#13
20230264807
2023-08-24

Arrangement for influencing liquid flow and a method

#14
20230174221
2023-06-08

Aircraft structure and associated tools and methods

#15
20230107062
2023-04-06

EXHAUSTING OF HOT GASES FROM WITHIN AN AIRCRAFT

#16
20230033249
2023-02-02

Ducted wing propulsion system

#17
20230002036
2023-01-05

Aircraft wing with sequentially-timed bellows assembly for optimizing boundary layer control

#18
20220402620
2022-12-22

Aircraft battery system including a pressure-sensitive element sealing a battery venting region from a fluid channel

#19
20220396350
2022-12-15

Aerodynamic element, in particular for aircraft, comprising two aerodynamic parts forming an ascending profile junction

#20
20220363373
2022-11-17

Reaction jet helicopter

#21
20220349391
2022-11-03

Variable-porosity panel systems and associated methods

#22
20220324554
2022-10-13

Propeller-driven helicopter or airplane

#23
20220324553
2022-10-13

Method of and transonically operating aircraft having devices for suppressing aeroelastic instabilities

#24
20220316428
2022-10-06

APPARATUS AND METHOD FOR FLUID MANIPULATION

#25
20220234720
2022-07-28

Leading edge structure for a flow control system of an aircraft

#26
20220194575
2022-06-23

Fan apparatus with lift fan and louvered cover

#27
20210388858
2021-12-16

Method, system and apparatus for reducing fluid drag

#28
20210276708
2021-09-09

SPLIT-TILTWING AIRCRAFT AND RELATED METHODS

#29
20210245866
2021-08-12

Vortex generator system and method for assisting in store separation from a vehicle, and aircraft having vortex generator system

#30
20210237858
2021-08-05

Aircraft generating larger lift by reduction of fluid resistance

#31
20210214072
2021-07-15

Vertical tail unit for flow control

#32
20210214071
2021-07-15

Propeller and propeller blade

#33
20210209264
2021-07-08

Modeling and calculation aerodynamic performances of multi-stage transonic axial compressors

#34
20210206511
2021-07-08

CHARGING STATION AND COMBINED CHARGING STATION

#35
20210070470
2021-03-11

Take-off and landing station

#36
20210070444
2021-03-11

TRANSPORT MODULE

#37
20210070436
2021-03-11

MODULAR AIRCRAFT

#38
20210070422
2021-03-11

Noise abatement systems for retractable leading edge wing slats of an aircraft wing assembly

#39
20210039778
2021-02-11

Aircraft with versatile aviation

#40
20210003074
2021-01-07

Profiled structure and associated turbomachine

#41
20200407039
2020-12-31

WING-TO-BODY TRAILING EDGE FAIRING AND METHOD OF FABRICATING SAME

#42
20200391851
2020-12-17

Aircraft wing with bellows assembly for optimizing a boundary layer control system

#43
20200369376
2020-11-26

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

#44
20200354072
2020-11-12

Cooling duct

#45
20200346774
2020-11-05

Rotorcraft equipped with an aerodynamic device having a fairing provided with a perforated plate at an air inlet

#46
20200331592
2020-10-22

Apparatus for reducing drag of a transverse duct exit flow

#47
20200189717
2020-06-18

Cell structure and acoustic attenuation device for a nacelle of an aircraft propulsion assembly

#48
20200140065
2020-05-07

Aerodynamic structure for aircraft wing

#49
20200102084
2020-04-02

Active laminar flow control plenum panel arrangements and installation methods

#50
20200062379
2020-02-27

Cavity acoustic tones suppression

#51
20200047875
2020-02-13

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

#52
20200017198
2020-01-16

Aircraft generating larger lift by reduction of fluid resistance

#53
20200001980
2020-01-02

Aircraft generating larger thrust and lift by fluid continuity

#54
20190391047
2019-12-26

Estimating fluid parameter

#55
20190389566
2019-12-26

Control system

#56
20190389561
2019-12-26

Variable camber system

#57
20190389128
2019-12-26

ROTOR BLADE

#58
20190300158
2019-10-03

Aircraft wing assembly

#59
20190283861
2019-09-19

Air inlet with integrated fluid diverter

#60
20190106202
2019-04-11

Vertical tail unit for flow control

#61
20190084692
2019-03-21

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

#62
20190031321
2019-01-31

Fluidic device

#63
20190016444
2019-01-17

Leading edge structure for a flow control system of an aircraft

#64
20180334247
2018-11-22

Aircraft and flight control mechanisms used on aircraft

#65
20180334246
2018-11-22

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

#66
20180327076
2018-11-15

Aircraft cabin noise reduction systems and methods

#67
20180305019
2018-10-25

FIXED-WING AIRCRAFT WITH INCREASED STATIC STABILITY

#68
20180298829
2018-10-18

Variable-geometry boundary layer diverter

#69
20180170557
2018-06-21

Leading edge ice-protection system

#70
20180148163
2018-05-31

CONTROL SURFACE COMPONENT FOR A HIGH-LIFT DEVICE OF AN AIRCRAFT AND PRODUCTION METHOD THEREFOR

#71
20180079489
2018-03-22

Airfoil for an aircraft having reduced noise generation

#72
20180043995
2018-02-15

Active flow control systems and methods for aircraft

#73
20180010518
2018-01-11

NACELLE AND METHOD FOR INFLUENCING FLUID FLOWS IN A NACELLE

#74
20170369147
2017-12-28

Sound absorbers for airframe components

#75
20170361939
2017-12-21

Assembly for aircraft comprising engines with boundary layer ingestion propulsion

#76
20170321603
2017-11-09

Structure ensuring attenuation of acoustic waves and thermal exchange

#77
20170174325
2017-06-22

Aircraft or spacecraft fluidic oscillator device

#78
20170137123
2017-05-18

System, Apparatus and Methods for an Airspace Plane with Shockwave Piercing Wings

#79
20170036755
2017-02-09

Gust Alleviator

#80
20170001715
2017-01-05

Tile assembly

#81
20160244148
2016-08-25

Resonant blades using an aperture for cancellation of propeller generated noise

#82
20160194073
2016-07-07

High-lift device of flight vehicle

#83
20160167769
2016-06-16

High-lift device of flight vehicle

#84
20160137290
2016-05-19

Recessed lift spoiler assembly for airfoils

#85
20160137288
2016-05-19

Aerofoil and wings for air vehicles

#86
20160068250
2016-03-10

Airfoil portion with a chamber

#87
20160031550
2016-02-04

Submerged vortex generator

#88
20160031549
2016-02-04

Cavity acoustic tones suppression

#89
20150329200
2015-11-19

Radar energy absorbing deformable low drag vortex generator

#90
20150259061
2015-09-17

Aerodynamic device

#91
20150217849
2015-08-06

Panel for controlling the aerodynamic phenomena on a body

#92
20140061387
2014-03-06

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

#93
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

#94
20140014780
2014-01-16

High-lift device of flight vehicle

#95
20130320150
2013-12-05

Wing for an aircraft, aircraft and method for reducing aerodynamic drag and improving maximum lift

#96
20130153711
2013-06-20

Minimally intrusive wingtip vortex wake mitigation using inside-mold-line surface modifications

#97
20130032663
2013-02-07

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

#98
20120280088
2012-11-08

Method of laminar flow control using a door assembly

#99
20110309201
2011-12-22

Active flow control for transonic flight

#100
20110044812
2011-02-24

AIRFOIL WITH FLOW DEFLECTOR

#101
20100303634
2010-12-02

Fluid dynamic body having escapelet openings for reducing induced and interference drag, and energizing stagnant flow

#102
20100258679
2010-10-14

High-lift system for an aircraft with a main wing and an adjustable slat

#103
20100243818
2010-09-30

Flying object for transonic or supersonic velocities

#104
20100236637
2010-09-23

Surface Ventilator For A Compliant-Surface Flow-Control Device

#105
20100181435
2010-07-22

Door assembly for laminar flow control system

#106
20100084514
2010-04-08

System and method to control flowfield vortices with micro-jet arrays

#107
20100044520
2010-02-25

Establishment of laminar boundary layer flow on an aerofoil body

#108
20080315012
2008-12-25

Method and System for Regulating Internal Fluid Flow Within an Enclosed or Semi-enclosed Environment

#109
20080272241
2008-11-06

Device for Reducing a Drag Produced by the Relative Displacement of a Body and Fluid

#110
20080217468
2008-09-11

MAST FOR AN AIRCRAFT NACELLE INCORPORATING MEANS FOR LIMITING THE APPEARANCE OF VIBRATIONS, IN PARTICULAR IN CERTAIN FLIGHT REGIMES, AT A HIGH MACH NUMBER AND LOW LIFT

#111
20080197208
2008-08-21

Membrane actuator based on ferromagnetic shape memory alloy composite for synthetic jet actuator

#112
20070205853
2007-09-06

Design of membrane actuator based on ferromagnetic shape memory alloy composite for synthetic jet actuator

#113
20070034746
2007-02-15

System for aerodynamic flows and associated method

#114
20060102800
2006-05-18

Method and apparatus for modulating flow separation

#115
20060022092
2006-02-02

System and method to control flowfield vortices with micro-jet arrays

#116
20050173591
2005-08-11

Airship and method of operation

#117
20050106017
2005-05-19

Method and system for regulating fluid over an airfoil or a hydrofoil

#118
20050106016
2005-05-19

Method and system for regulating fluid flow over an airfoil or a hydrofoil

#119
20050098685
2005-05-12

Method and system for regulating pressure and optimizing fluid flow about a fuselage similar body

#120
20050017126
2005-01-27

Slotted aircraft wing

#121
14451247
2016-04-12

Drag reduction utilizing driven micro-cavities

#122
14271477
2018-02-20

Wing leading edge architecture suitable for laminar flow

#123
11948046
2015-06-16

Hybrid (pitot-flush) air intake system for air-breathing missiles and aircraft