72296 ⎘
Active noise reduction systems
VARIABLE NOISE REDUCTION SYSTEMS FOR SUPERSONIC AIRCRAFT, AND ASSOCIATED METHODS
#2METHOD OF REDUCING NOISE OF AIRCRAFT HAVING HYBRID POWER PLANTS
#3Dynamic Aircraft Routing
#4Vertical Take-Off and Landing (VTOL) Aircraft Noise Signature Mitigation
#5Dynamic Aircraft Routing
#6METHOD TO DECREASE ACOUSTIC SIGNATURE OF A HYBRID ELECTRIC PROPULSION SYSTEM
#7AIRCRAFT PART THAT COMPRISES AN ACCESS DOOR AND A FUSELAGE PART FORMING A CAVITY AND IS CONFIGURED TO REDUCE NOISE GENERATED BY THE CAVITY
#8NOISE REDUCING NOSECONE FOR AIRCRAFT
#9Vertical take-off and landing (VTOL) aircraft noise signature mitigation
#10Flying body, controller, control program, and control method
#11HELICOPTER ACTIVE NOISE SUPPRESSION DEVICE INTEGRATING SOUND ARRAY AND ON-PROPELLER CONTROL
#12PASSIVE VIBRATION DAMPING DEVICE FOR AIRCRAFT
#13Semi-Active Noise Control System for an Aircraft
#14Shroud for an air moving device
#15ELECTRONIC NOISE CANCELLATION TECHNIQUES FOR AIRCRAFT ENCLOSURES AND/OR OTHER ENCLOSURES
#16Method For Controlling Vertical Take-Off And Landing Aircraft Using Different Propeller Blade Angle Of Attack Ranges For Different Flight Modes
#17METHOD OF REDUCING NOISE OF AIRCRAFT HAVING HYBRID POWER PLANTS
#18GAS TURBINE ENGINE NOISE REDUCTION
#19Vibration-damped aircraft wheel bin
#20VARIABLE NOISE REDUCTION SYSTEMS FOR SUPERSONIC AIRCRAFT, AND ASSOCIATED METHODS
#21Urban air mobility noise reduction system and method
#22Drone noise cancellation using sound beams
#23System and method to actively morph an aircraft while in flight for sonic boom suppression and drag minimization
#24AIRCRAFT HAVING AN AIRCRAFT BODY INCLUDING A FEATURE
#25Dynamic aircraft routing
#26Unmanned aircraft and information processing method
#27Anti-torque control using fixed blade pitch motors
#28Acoustic awareness platform
#29Rotary wing aircraft with improved propulsion system
#30Method and a system for reducing the in-flight noise from a hybrid helicopter by managing the angle of incidence of its main rotor and the thrust from each propeller
#31Vertical take-off and landing (VTOL) aircraft noise signature mitigation
#32Noise mitigation system for an unducted propulsive rotor of an aircraft
#33METHODS AND SYSTEMS FOR REDUCING ROTOR ACOUSTICS OF AN AIRCRAFT
#34System and method for aircraft noise mitigation
#35Anti-torque systems for rotorcraft
#36Unmanned aircraft having reduced acoustic signatures
#37Multi-rotor noise control by automated distribution propulsion
#38Retractable leading edge wing slats having autonomously curvable airflow shield for noise-abatement
#39Systems and methods for tuning propeller noise
#40Vibration-damped aircraft wheel bin
#41Anti-torque control using fixed blade pitch motors
#42System and method for aircraft noise mitigation
#43Unmanned aircraft, information processing method, and recording medium
#44Systems and methods for acoustic radiation control
#45Modeling and reduction of drone propulsion system noise
#46Optimizing aircraft control based on noise abatement volumes
#47Dynamic aircraft routing
#48Rotor blade noise reduction system, flying object and noise reduction system
#49Systems and methods for reducing the propeller noise
#50AIRCRAFT SYSTEMS AND METHODS
#51Multi-rotor tonal noise control for UAV
#52Adaptive phase control architecture for reduction of community noise from distributed propulsion vehicles
#53Sound attenuation panel for an aircraft
#54Selectively thrusting propulsion units for aerial vehicles
#55Unmanned aerial vehicle
#56Unmanned flying object
#57Unmanned air vehicle
#58Optimizing aircraft control based on noise abatement volumes
#59Systems and methods for noise mitigation for hybrid and electric aircraft
#60Aircraft cabin noise reduction systems and methods
#61Systems and methods for acoustic radiation control
#62Shroud for an aircraft
#63Active airborne noise abatement
#64Active noise control system in an aircraft and method to reduce the noise in the aircraft
#65Virtual aerodynamic surface systems
#66Unmanned aerial vehicle (UAV) for collecting audio data
#67Active airborne noise abatement
#68Method for masking a sound signal generated by an element of the skin of an aircraft
#69Modeling and reduction of drone propulsion system noise
#70Anti-torque control using matrix of fixed blade pitch motor modules
#71Aerial vehicle with different propeller blade configurations
#72Aerial vehicle propulsion mechanism with coaxially aligned and independently rotatable propellers
#73Telescoping propeller blades for aerial vehicles
#74Selectively thrusting propulsion units for aerial vehicles
#75Aerial vehicle propulsion mechanism with coaxially aligned propellers
#76Aerial vehicle adaptable propeller blades
#77Carbon nanotube transducers on propeller blades for sound control
#78Propeller surface area treatments for sound dampening
#79PIEZOELECTRIC TRANSDUCERS ON PROPELLER BLADES FOR SOUND CONTROL
#80Active airborne noise abatement
#81Floating motor mount for unmanned aerial vehicles
#82Flow disruption devices for the reduction of high lift system noise
#83Resonant blades using an aperture for cancellation of propeller generated noise
#84Propeller
#85Aircraft having keel tube with structure that reduces noise emissions
#86Vehicle noise control and communication
#87Audio command adaptive processing system and method
#88Aircraft air scoop systems with passive pneumatic actuators
#89Rotating shaft damping with electro-rheological fluid
#90Dynamically detecting resonating frequencies of resonating structures
#91Active aircraft pylon noise control system
#92Virtual aerodynamic surface systems
#93Propeller sound field modification systems and methods
#94Propeller sound field modification systems and methods
#95Method 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
#96Active aircraft pylon noise control system
#97Aircraft with tuned vibration absorber mounted on skin
#98Apparatus and method for improving the damping of acoustic waves
#99Noise control device
#100METHOD FOR DAMPING REAR EXTENSION ARM VIBRATIONS OF ROTORCRAFT AND ROTORCRAFT WITH A REAR EXTENSION ARM VIBRATION DAMPING DEVICE
#101Active cancellation and vibration isolation with feedback and feedforward control for an aircraft engine mount
#102Directed energy off-body heating for supersonic vehicle shockwave and sonic boom control
#103Method for damping rear extension arm vibrations of rotorcrafts and rotorcraft with a rear extension arm vibration damping device
#104Method and aircraft system for active suppression of aircraft low frequency aerostructure lateral bending modes
#105Aircraft multi-axis modal suppression system
#106Damping of vibrations
#107Anti-sound production using adjustable propeller blades
#108Noise modulation for unmanned aerial vehicles
#109Active vibration control for aerial vehicles
#110Noise control system for a ducted rotor assembly
#111Systems and methods for tuning propeller noise
#112Drone location signature filters
#113Unmanned aerial vehicle motor driving randomization for noise abatement
#114Propeller sound alteration for a drone
#115Drone noise reduction
#116Simulated ground effect for aerial vehicles
#117Adjustable propeller blade with sound flaps
#118Adjustable propeller blades for sound control
#119Active airborne noise abatement
#120Unmanned aerial vehicle motor driving randomization and feedback for noise abatement
#121Unmanned aerial vehicle motor driving randomization for noise abatement
#122External acoustic liners for multi-functional aircraft noise reduction