Add to ORKGBased on reasonable estimates of flow conditions occurring in an axial fan, acoustic radiation from various noise sources is evaluated. Results of computations on two specific fans are presented, and relative significance of the various sources is examined
ABSTRACT This paper describes a technique for the investigation of noise sources correlated to tip c...
This study investigates the causal relationship between flow aerodynamics and radiated noise in low-...
A major source of the noise generated by high bypass ratio aircraft fan engines is the unsteady pres...
An analytical study was made of some possible rotor alone noise sources of dipole, quadrapole and mo...
Fan noise including its generation, radiation characteristics, and suppression by acoustic treatment...
The method of computing radiated noise from a ducted rotor due to inflow distortion and turbulence a...
We describe a mechanical/acoustic study of a short-ducted axial flow fan. The purpose is to compare ...
A formula is obtained for the total acoustic power spectra radiated out the front of the fan as a fu...
The noise generated by inlet turbulence impinging on a subsonic axial flow fan was studied as a func...
Hand calculation procedures for predicting aerodynamic noise from propellers, rotors, and lift fan
With the objective to improve the understanding of the dominant fan noise source mechanisms a compre...
The objective of this work was to conduct an experimental and numerical investigation of the noise r...
Results of recent NASA research to reduce aircraft turbofan noise are described. As the bypass ratio...
Results of an experimental investigation at the Ames 40- by 80-Foot Wind Tunnel of fan rotor alone d...
An existing fan stage was redesigned to reduce stator lift fluctuations and was acoustically tested ...
ABSTRACT This paper describes a technique for the investigation of noise sources correlated to tip c...
This study investigates the causal relationship between flow aerodynamics and radiated noise in low-...
A major source of the noise generated by high bypass ratio aircraft fan engines is the unsteady pres...
An analytical study was made of some possible rotor alone noise sources of dipole, quadrapole and mo...
Fan noise including its generation, radiation characteristics, and suppression by acoustic treatment...
The method of computing radiated noise from a ducted rotor due to inflow distortion and turbulence a...
We describe a mechanical/acoustic study of a short-ducted axial flow fan. The purpose is to compare ...
A formula is obtained for the total acoustic power spectra radiated out the front of the fan as a fu...
The noise generated by inlet turbulence impinging on a subsonic axial flow fan was studied as a func...
Hand calculation procedures for predicting aerodynamic noise from propellers, rotors, and lift fan
With the objective to improve the understanding of the dominant fan noise source mechanisms a compre...
The objective of this work was to conduct an experimental and numerical investigation of the noise r...
Results of recent NASA research to reduce aircraft turbofan noise are described. As the bypass ratio...
Results of an experimental investigation at the Ames 40- by 80-Foot Wind Tunnel of fan rotor alone d...
An existing fan stage was redesigned to reduce stator lift fluctuations and was acoustically tested ...
ABSTRACT This paper describes a technique for the investigation of noise sources correlated to tip c...
This study investigates the causal relationship between flow aerodynamics and radiated noise in low-...
A major source of the noise generated by high bypass ratio aircraft fan engines is the unsteady pres...