A review of aerodynamic noise from propellers, rotors, and lift fans
Hand calculation procedures for predicting aerodynamic noise from propellers, rotors, and lift fans
SEARCH · Engineering Papers
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Hand calculation procedures for predicting aerodynamic noise from propellers, rotors, and lift fans
Existing computer program improved capability for predicting performance of ducted fan in uniform axial flow
Ducted fan interference analysis for transport aircraft
Manual for computer program for predicting performance of ducted fans
V/STOL aircraft lift fan noise reduction and suppression
Wind tunnel tests of V/STOL transport model with six wing mounted lift fans
Aerodynamic performance, and noise measurements of highly loaded low speed fan
Transonic wind tunnel tests to determine wake effect of tip-mounted fan-jet engine on reducing tip vorticity of unswept symmetrical panel
Lift fan propulsion systems for civil VTOL aircraft
Wind tunnel investigation of V/STOL transport model with four pod-mounted lift fans
Nacelle induced flutter effects in elastodynamic scaled model of fan jet transport aircraft mounted in wind tunnel
Low pressure ratio lift fan propulsion system for intercity VTOL transports, considering thrust, safety, noise, weight, components, speed, turbine and transmission
Operating noise of fans is reduced by adding part span vanes to vane row of stator, reducing the number of full span vanes and maintaining a vane-to-blade ratio of about 2 to 1.
Simulating downstream flow blockage doors in bypass air duct of turbofan engine with axial flow fan rotor
Acoustic properties of supersonic fan with short blade span
Psychoacoustic evaluation of modifications to DC-8 aircraft nacelles to reduce fan-compressor noise - Part 6
Economic impact of modifications to DC-8 aircraft nacelles to reduce fan-compressor noise - Part 5
Static tests of noise suppressor configurations of DC-8 aircraft nacelle modifications to reduce fan-compressor noise levels - Part 3