A noise reduction system in a vertical takeoff and landing (VTOL) vehicle is provided. The noise reduction system is configured to: identify a noise level at which the VTOL vehicle can operate; dynamically determine a motor-specific fan RPM and a motor-specific fan pitch that will allow the vehicle to not exceed the noise level based on vehicle noise characteristics and an ambient noise level; determine whether the determined motor-specific fan RPM and motor-specific fan pitch will allow the vehicle to operate within its safety envelope; and cause a motor-specific fan RPM command and a motor-specific fan pitch command to be sent to the lifter motor controller to cause the vehicle lifter motors to operate at the determined motor-specific fan RPM and motor-specific fan pitch when it is determined that the determined motor-specific fan RPM and motor-specific fan pitch will allow the VTOL vehicle to operate within its safety envelope.
NOISE SIGNATURE PROXIMITY WARNING SYSTEM AND FEEDBACK MECHANISM FOR AIRCRAFT
2022-01-27
Patent
Electronic Resource
English
NOISE SIGNATURE PROXIMITY WARNING SYSTEM AND FEEDBACK MECHANISM FOR AIRCRAFT
European Patent Office | 2025
|Aircraft Proximity Warning Devices
SAE Technical Papers | 1969
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