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Hydrodynamic Characteristics of the 12.75 Inch Type X10 Antisubmarine Rocket

Robison, Gerald B. (1947) Hydrodynamic Characteristics of the 12.75 Inch Type X10 Antisubmarine Rocket. California Institute of Technology , Pasadena, CA. (Unpublished)

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This laboratory was requested to recommend a nose design for the 12.75-inch Antisubmarine Rocket which would give a terminal velocity of 40 feet per second. Such a nose was to have a flat face with a diameter not less than half the projectile diameter. Two designs are submitted herein. The diagram shows their outlines together with that of the original nose. Calculations indicate that either should give a terminal velocity between 47 and 48 feet per second in sea water of 60° Fahrenheit (with 23.7 lbs. of water in discharged motor tube, 45 ft/sec if empty). These nose shapes are sufficiently different to afford considerable latitude in respect to characteristics of maximum range, ricochet, cavitation, and performance in the entry bubble. It is unlikely that any other nose shape could further materially reduce the drag while other components remain unchanged. The new noses have trivial effect on the cross force coefficient developed with the original nose and all have considerable static stability.

Item Type:Report or Paper (Technical Report)
Additional Information:Report No. N-53. U.S. Bureau of Ordnance Contract NOrd 9612.
Group:Hydrodynamics Laboratory
Funding AgencyGrant Number
Department of the Navy Bureau of OrdnanceNOrd 9612
Record Number:CaltechAUTHORS:20150723-173714304
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:58998
Deposited On:13 Oct 2015 19:24
Last Modified:03 Oct 2019 08:42

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