Flow Field Survey Near the Rotational Plane of an Advanced Design Propeller on a JetStar Airplane
Walsh, Kevin Robert (1985) Flow Field Survey Near the Rotational Plane of an Advanced Design Propeller on a JetStar Airplane. Technical Report NASA TM-86037, Research Engineering, NASA Dryden Flight Research Center.
Full text available as: |
Abstract
An investigation was conducted to obtain upper fuselage surface static pressures and boundary layer velocity profiles below the centerline of an advanced design propeller. This investigation documented the upper fuselage velocity flow field in support of the in-flight acoustic tests conducted on a JetStar airplane. Initial results of the boundary layer survey showed the evidence of an unusual flow disturbance, which was attributed to the two windshield wiper assemblies on the aircraft. The assemblies were removed, eliminating the disturbances from the flow field. This report presents boundary layer velocity profiles at altitudes of 6096 and 9144 m (20,000 and 30,000 ft) and Mach numbers from 0.6 to 0.8, and it investigates the effects of windshield wiper assemblies on these profiles. Because of the unconventional velocity profiles that were obtained with the assemblies mounted, classical boundary layer parameters, such as momentum and displacement thicknesses, are not presented. The effects of flight test variables (Mach number and angles of attack and sideslip) and an advanced design propeller on boundary layer profiles - with the wiper assemblies mounted and removed - are presented.
| EPrint Type: | NASA Technical Memorandum |
|---|---|
| Keywords: | Advanced design propeller, Boundary layers, Fuselage aerodynamics, Velocity profiles |
| Subjects: | (01 - 09) Aeronautics: (02) Aerodynamics Aircraft/Project: C-140 JetStar |
| ID Code: | 571 |
| Deposited On: | 30 January 2006 |
| Additional Information: | 28 pages. |
