Accession Number:

AD0711665

Title:

INVESTIGATION OF THE RECIRCULATION REGION OF A FLOW FIELD CAUSED BY A JET IN GROUND EFFECT WITH CROSSFLOW

Descriptive Note:

Final rept. 19 Mar-30 Apr 1970

Corporate Author:

ARO INC ARNOLD AFS TN

Personal Author(s):

• Binion, Jr, T. W.

Report Date:

1970-09-01

Pagination or Media Count:

30.0

Abstract:

A wind tunnel investigation was conducted in the Low Speed Wind Tunnel VSTOL to determine the velocities in the recirculation region of the flow field produced by the interaction of a jet impinging on a ground plane with crossflow. Axial and vertical velocity component measurements were obtained with a forward-scattering laser Doppler velocimeter. Test results provide two- component velocity fields and indicate that the jet-to-free-stream velocity ratio is much more important in determining the flow field than the magnitude of the individual velocities.

Descriptors:

• *GROUND EFFECT
• *VERTICAL TAKEOFF AIRCRAFT
• FLOW FIELDS
• HOVERING
• INTERACTIONS
• VELOCITY

Subject Categories:

• Aerodynamics
• VSTOL
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE