ClassID:

72311

B64C2230/28 - CPC Classification

Classification description:

Boundary layer controls at propeller or rotor blades

Recent Application in this class:
#1
20260125152
2026-05-07

ROTOR AND ROTORCRAFT

#2
20240124131
2024-04-18

AIRCRAFT GENERATING LARGER THRUST AND LIFT BY FLUID CONTINUITY

#3
20230303239
2023-09-28

APPARATUS AND METHOD FOR FLUID MANIPULATION

#4
20230027852
2023-01-26

System and method of rotor management

#5
20220324554
2022-10-13

Propeller-driven helicopter or airplane

#6
20220041269
2022-02-10

Flow control method and rotary wing unit

#7
20220009618
2022-01-13

Active lift control device and method

#8
20210300540
2021-09-30

Ducted fans having fluidic thrust vectoring

#9
20210300539
2021-09-30

Ducted fans having edgewise flow augmentation

#10
20210300538
2021-09-30

Fluidic roll control systems for use in forward flight

#11
20210300531
2021-09-30

Fluidic yaw control systems for use in hover

#12
20210237858
2021-08-05

Aircraft generating larger lift by reduction of fluid resistance

#13
20200198763
2020-06-25

Aerodynamic Regulation of Airscrew-, Fan- and Wind Turbine Blades with Bores and/or Cutting and/or Notching

#14
20200070956
2020-03-05

Aerodynamic Regulation of Airscrew-, Fan- and Wind Turbine Blades with Bores and/or Cutting and/or Notching

#15
20200017198
2020-01-16

Aircraft generating larger lift by reduction of fluid resistance

#16
20200001980
2020-01-02

Aircraft generating larger thrust and lift by fluid continuity

#17
20180346108
2018-12-06

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

#18
20180148162
2018-05-31

AIRCRAFT HAVING A DRAG COMPENSATION DEVICE BASED ON A BOUNDARY LAYER INGESTING FAN

#19
20180111677
2018-04-26

Tip jet orifice for aircraft brown out mitigation

#20
20170297697
2017-10-19

Rotorcraft including auxiliary propulsor positioned to ingest boundary layer flow

#21
20170274993
2017-09-28

Aerial vehicle with different propeller blade configurations

#22
20170274983
2017-09-28

Aerial vehicle propulsion mechanism with coaxially aligned and independently rotatable propellers

#23
20170274982
2017-09-28

Telescoping propeller blades for aerial vehicles

#24
20170274979
2017-09-28

Aerial vehicle propulsion mechanism with coaxially aligned propellers

#25
20170029102
2017-02-02

Methods and systems for rotary wing active flow control

#26
20160052627
2016-02-25

Noise reducing profile for helicopter rotor blade tracking wedges

#27
20150040538
2015-02-12

Rotor noise suppression

#28
20140255184
2014-09-11

System and method for reducing rotor blade noise

#29
20130327879
2013-12-12

High speed compound rotary wing aircraft

#30
20130101392
2013-04-25

Propulsive system

#31
20120292441
2012-11-22

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

#32
20120256056
2012-10-11

Oscillatory vorticity generator and applications thereof

#33
20120145824
2012-06-14

Pylon for fixing an aircraft engine having unducted pusher propellers

#34
20120070288
2012-03-22

Rotor blade with integrated passive surface flap

#35
20110014058
2011-01-20

PROPELLER

#36
20100260614
2010-10-14

Wind turbine blade with submerged boundary layer control means comprising crossing sub-channels

#37
20100209257
2010-08-19

Wind turbine blade with submerged boundary layer control means

#38
20090189023
2009-07-30

AERODYNAMIC HIGH-PERFORMANCE PROFILE FOR AIRCRAFT

#39
20070252047
2007-11-01

Surface flow diverting and static charging ducted pores on wing or blade tip to reduce wake and BVI noise

#40
20060110257
2006-05-25

Ceiling fan blade

#41
20060006290
2006-01-12

Vorticity cancellation at trailing edge for induced drag elimination

#42
20050207895
2005-09-22

Aerofoils

#43
16158146
2021-11-02

Anti-sound production using adjustable propeller blades