Add to ORKGPrediction techniques which can be or have been applied to subsonic rotors, and methods for designing helicopter rotors for reduced broadband noise generation are summarized. It is shown how detailed physical models of the noise source can be used to identify approaches to noise control
The increasing demand for cuts in environmental pollution is driving aircraft manufacturers towards ...
Noise is an environmental concern and due to the increasing interest in helicopters as an alternati...
A new approach to reducing low frequency, in-plane harmonic noise of helicopter rotors is explored t...
Experimental and related analytical results on model rotor rotational and broadband noise obtained i...
For low speed rotors, it is shown that unsteady load models are only partially successful in predict...
The research objective of this dissertation is to advance the understanding of rotorcraft broadband ...
It is not sufficient to optimize a rotor design in terms of a single noise level calculated for a si...
This thesis describes a frequency domain formulation for predicting the broadband self-noise due to ...
Mathematical analysis procedures for predicting the main and tail rotor rotational and broadband noi...
This paper briefly reviews rotorcraft noise mechanisms and their approximate importance for differen...
The features of existing wind tunnels involved in noise studies are discussed. The acoustic characte...
An essential prerequisite to reducing the acoustic detectability of military rotorcraft is a better ...
The helicopter acoustics program at NASA Langley has included technology for elements of noise contr...
Results of the initial phase of a research project to study the design constraints on helicopter noi...
Recent theoretical work on sound sources in subsonic turbomachinery is applied to the correlation of...
The increasing demand for cuts in environmental pollution is driving aircraft manufacturers towards ...
Noise is an environmental concern and due to the increasing interest in helicopters as an alternati...
A new approach to reducing low frequency, in-plane harmonic noise of helicopter rotors is explored t...
Experimental and related analytical results on model rotor rotational and broadband noise obtained i...
For low speed rotors, it is shown that unsteady load models are only partially successful in predict...
The research objective of this dissertation is to advance the understanding of rotorcraft broadband ...
It is not sufficient to optimize a rotor design in terms of a single noise level calculated for a si...
This thesis describes a frequency domain formulation for predicting the broadband self-noise due to ...
Mathematical analysis procedures for predicting the main and tail rotor rotational and broadband noi...
This paper briefly reviews rotorcraft noise mechanisms and their approximate importance for differen...
The features of existing wind tunnels involved in noise studies are discussed. The acoustic characte...
An essential prerequisite to reducing the acoustic detectability of military rotorcraft is a better ...
The helicopter acoustics program at NASA Langley has included technology for elements of noise contr...
Results of the initial phase of a research project to study the design constraints on helicopter noi...
Recent theoretical work on sound sources in subsonic turbomachinery is applied to the correlation of...
The increasing demand for cuts in environmental pollution is driving aircraft manufacturers towards ...
Noise is an environmental concern and due to the increasing interest in helicopters as an alternati...
A new approach to reducing low frequency, in-plane harmonic noise of helicopter rotors is explored t...