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The Drag of Two Streamline Bodies as Affected by Protuberances and AppendagesThis report presents the results of wind tunnel tests of two airship models conducted to determine the drag coefficients at zero pitch, and the effect of fins and cars and of flat and streamlined protuberances located at various positions along the hull. During the investigation the stern of one model was rounded off to produce a blunter shape. The extreme range of the Reynolds number based on the over-all length of the models was from 1,300,000 to 33,000,000. At large values of the Reynolds number the streamlined protuberance affected the drag very little, and the additional drag caused by the flat protuberance was less than the calculated drag by the protuberance alone. The fins and cars together increased the bare-hull drag about 20 per cent.
Document ID
19930091526
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Abbott, Ira H
Date Acquired
September 6, 2013
Publication Date
January 1, 1934
Report/Patent Number
NACA-TR-451
Accession Number
93R20816
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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