Results 211 to 220 of about 1,176,775 (247)

Research on Helicopter Rotor Noise

1978
Abstract : Research was conducted on aspect of noise generation by helicopters. A general review of helicopter noise was prepared and published as one part of the work. Methods were developed for the analysis of high frequency broadband noise from rotors.
openaire   +1 more source

Rotor Noise: Discrete Frequency Rotor Noise

1976
openaire   +2 more sources

Rotor Noise: Panel Discussion: Rotor Noise

1976
openaire   +2 more sources

Flow confinement effects on sUAS rotor noise

Aerospace Science and Technology, 2023
Gianluca Romani, Damiano Casalino
exaly  

Beamforming of Broadband Rotor Noise

AIAA AVIATION 2021 FORUM, 2021
Stewart A. Glegg, Christopher Hickling, N. Agastya Balantrapu, Jarrod T. Banks, Humza Butt, William N. Alexander, William J. Devenport   +6 more
openaire   +1 more source

Rotor Noise: Tone Noise of High-Speed Rotors

1976
openaire   +2 more sources

Experimental study on noise reduction of a wavy multi-copter rotor

Applied Acoustics, 2020
Yannian Yang, Haitao Hu, Elias J G Arcondoulis   +2 more
exaly  

A global rotor noise control method based on near-field acoustic holography and sound field reproduction

Aerospace Science and Technology, 2022
Mengxue Shao, Xice Xu
exaly  

Experimental research of active vibration and noise control of electrically controlled rotor

Chinese Journal of Aeronautics, 2021
Taoyong Su, Jinchao Ma, Shujun Guan
exaly  

Rotor Noise: Thickness Noise of Helicopter Rotors at High Tip Speeds

1976
openaire   +2 more sources