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Numerical calculation of transonic boattail flowA viscid-inviscid interaction procedure for the calculation of subsonic and transonic flow over a boattail was developed. This method couples a finite-difference inviscid analysis with an integral boundary-layer technique. Results indicate that the effect of the boundary layer is as important as an accurate inviscid method for this type of flow. Theoretical results from the solution of the full transonic-potential equation, including boundary layer effects, agree well with the experimental pressure distribution for a boattail. Use of the small disturbance transonic potential equation yielded results that did not agree well with the experimental results even when boundary-layer effects were included in the calculations.
Document ID
19750017797
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Technical Note (TN)
Authors
Chow, W. L.
(NASA Lewis Research Center Cleveland, OH, United States)
Bober, L. J.
(NASA Lewis Research Center Cleveland, OH, United States)
Anderson, B. H.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
June 1, 1975
Subject Category
Aerodynamics
Report/Patent Number
E-8065
NASA-TN-D-7984
Accession Number
75N25869
Funding Number(s)
PROJECT: RTOP 505-04
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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