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A Scale Model Investigation of the Effect of Jet Configuration on Skin Friction for the MK-40 Torpedo

Waid, R. L. (1952) A Scale Model Investigation of the Effect of Jet Configuration on Skin Friction for the MK-40 Torpedo. California Institute of Technology , Pasadena, CA. (Unpublished) http://resolver.caltech.edu/CaltechAUTHORS:20150506-102103438

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Abstract

An analytical study, combining jet diffusion patterns and jet velocities, indicates that there are four methods of eliminating the clinging jet phenomenon which occurs on the Mk-40 Torpedo Test Vehicle. It is shown that extension of the nozzles along the existing nozzle axis appears to present the simplest method of design improvement. Experiments were conducted on a modified model of the Mk-40 to verify the analysis. It was found that for the operational jet-to-model velocity ratio, (U/V) of 2, a nozzle extension of 6 nozzle diameters is the minimum required to provide cling-free performance. All experiments and calculations were made for the case of a body without exhaust ports or gas discharge.


Item Type:Report or Paper (Project Report)
Additional Information:Department of the Navy Bureau of Ordnance Contract NOrd-9612. Report No. E-12.6.
Group:Hydrodynamics Laboratory
Funders:
Funding AgencyGrant Number
Department of the Navy Bureau of OrdnanceNOrd-9612
Record Number:CaltechAUTHORS:20150506-102103438
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20150506-102103438
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57266
Collection:CaltechAUTHORS
Deposited By: Kristin Buxton
Deposited On:06 May 2015 17:38
Last Modified:06 May 2015 17:38

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