Acoustic and aerodynamic study of a pusher-propeller aircraft modelNational Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, 1990 - Propellers, Aerial - 59 pages |
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Contents
CONCLUSIONS | 12 |
Inplane acoustic pressure with Ytail Vtail and Itail installed | 47 |
Upstream acoustic pressures with Ytail Vtail and Itail installed | 48 |
9 other sections not shown
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Common terms and phrases
10-Foot Wind Tunnel 11 BLADE-PASSAGE HARMONIC 6500 FREQUENCY acoustic pressure aerodynamic airfoil Ames Research Center angle of attack background noise blade interactions blade loading blade-passage frequency BLADE-PASSAGE HARMONIC Figure blade-passage harmonic noise blade-passage noise Block and Gentry computed direction dorsal fin Effect of Y-tail empennage and propeller empennage surface empennage trailing edge empennage wake empennage/propeller spacing Filotas floor reflections fuselage harmonic levels harmonic noise levels harmonics of blade-passage higher harmonics Home and Soderman Hz Figure increased INPUT interac interaction noise Larrabee and French m/sec Mach number measured microphone 12 monics NASA noise decay noise measured normalized peak peller propeller blade propeller interaction propeller noise Propeller-alone noise pusher propeller radiated noise relative rotational speed ROTOR shear layer shown in figure spacing between empennage strut SUBROUTINE TAIL test section three empennages turbulence unsteady blade-loading wake deficit wake turbulence wake width Wilby wind turbine windspeed Y-tail
Bibliographic information
| Title | Acoustic and aerodynamic study of a pusher-propeller aircraft model Volume 3040 of NASA technical paper |
| Authors | Paul T. Soderman, Ames Research Center |
| Publisher | National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, 1990 |
| Original from | National Aeronautics and Space Administration (NASA) |
| Digitized | Jun 26, 2009 |
| Length | 59 pages |
| Subjects | Propellers, Aerial Wakes (Aerodynamics) |
| Export Citation | BiBTeX EndNote RefMan |