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An Analytical Method for the Ditching Analysis of an Airborne VehicleA simple analytical method has been introduced for aerohydrodynamic load analysis of an airborne configuration during water ditching. The method employs an aerodynamic panel code, based on linear potential flow theory, to simulate the flow of air and water around an aircraft configuration. The free surface separating the air and water region is represented by doublet sheet singularities. Although all the theoretical load distributions are computed for air, provisions are made to correct the pressure coefficients obtained on the configuration wetted surfaces to account for the water density. As an analytical tool, the Vortex Separation Aerodynamic (VSAERO) code is chosen to carry out the present investigation. After assessing the validity of the method, its first application is to analyze the water ditching of the Space Shuttle configuration at a 12 degree attitude.
Document ID
19880053484
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Farhad Ghaffari ORCID
(ViGYAN (United States) Hampton, Virginia, United States)
Date Acquired
August 13, 2013
Publication Date
June 6, 1988
Publication Information
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
AIAA PAPER 88-2521
Meeting Information
Meeting: 6th Applied Aerodynamics Conference
Location: Williamsburg, VA
Country: US
Start Date: June 6, 1988
End Date: June 8, 1988
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
88A40711
Funding Number(s)
CONTRACT_GRANT: NAS1-17919
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Pressure coefficient
Angle of attack
Aircraft ditching
Aerodynamic properties
Flow conditions
Space shuttle
Surface modeling
Flow characteristics
Solid rocket boosters
Wind tunnels

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