Accession Number:

ADA326026

Title:

A Comparison of Lifting-Line and CFD Methods with Flight Test Data from a Research Puma Helicopter.

Descriptive Note:

Technical memo.,

Corporate Author:

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION MOFFETT FIELD CA AMES RESEARCH CENTER

Personal Author(s):

• Bousman, William G.
• Young, Colin
• Toulmay, Francois
• Gilbert, Neil E.
• Strawn, Roger C.

Report Date:

1996-10-01

Pagination or Media Count:

349.0

Abstract:

Four lifting-line methods were compared with flight test data from a research Puma helicopter and the accuracy assessed over a wide range of flight speeds. Hybrid CFD methods were also examined for two high-speed conditions. A parallel analytical effort was performed with the lifting-line methods to assess the effects of modeling assumptions and this provided insight into the adequacy of these methods for load predictions.

Descriptors:

• *FLIGHT TESTING
• *COMPUTATIONAL FLUID DYNAMICS
• *HELICOPTERS
• AERODYNAMIC CHARACTERISTICS
• FLIGHT SPEEDS

Subject Categories:

• Aerodynamics
• Helicopters
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE