Telescoping Cavitator

This patent application discloses a high speed underwater projectile configuration that includes a cylindrical telescoping cavitator design capable of providing projectile nose shape change where such change to the projectile nose tip geometry results in supercavitation and a concomitant vaporous ca...

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1. Verfasser:	Gieseke, Thomas J
Format:	Report
Sprache:	eng
Schlagworte:	CAVITATION CYLINDRICAL BODIES CYLINDRICAL CAVITATOR PISTONS CYLINDRICAL TELESCOPING CAVITATORS DRAG REDUCTION Fluid Mechanics HYDRODYNAMICS LONG RANGE(DISTANCE) MINE NEUTRALIZATION NOSE TIPS PATENT APPLICATIONS PISTONS PRIMARY CAVITATORS PROJECTILE NOSE SHAPE CHANGE PROJECTILE NOSES RETRACTABLE RETRACTABLE CAVITATOR PISTONS SECONDARY CAVITATORS SUPERCAVITATION TELESCOPING STRUCTURES TORPEDO COUNTERMEASURES UNDERWATER GUN SYSTEMS UNDERWATER MINES Underwater Ordnance UNDERWATER PROJECTILES VAPOROUS CAVITIES
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creator	Gieseke, Thomas J
description	This patent application discloses a high speed underwater projectile configuration that includes a cylindrical telescoping cavitator design capable of providing projectile nose shape change where such change to the projectile nose tip geometry results in supercavitation and a concomitant vaporous cavity in the water that reduces projectile drag resistance while maximizing projectile range and where the projectile nose tip further includes a retractable cavitator piston feature. The projectile nose is designed to house a cylindrical cavitator piston that protrudes forward from the projectile and is held in place until launch. Velocity induced hydrodynamic forces on the forward face of this cavitator piston cause the piston to start moving aft and to gradually cause the piston to retract into the projectile nose, until a larger, secondary cavitator is exposed to the vaporous cavity.
format	Report
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The projectile nose is designed to house a cylindrical cavitator piston that protrudes forward from the projectile and is held in place until launch. Velocity induced hydrodynamic forces on the forward face of this cavitator piston cause the piston to start moving aft and to gradually cause the piston to retract into the projectile nose, until a larger, secondary cavitator is exposed to the vaporous cavity.</description><language>eng</language><subject>CAVITATION ; CYLINDRICAL BODIES ; CYLINDRICAL CAVITATOR PISTONS ; CYLINDRICAL TELESCOPING CAVITATORS ; DRAG REDUCTION ; Fluid Mechanics ; HYDRODYNAMICS ; LONG RANGE(DISTANCE) ; MINE NEUTRALIZATION ; NOSE TIPS ; PATENT APPLICATIONS ; PISTONS ; PRIMARY CAVITATORS ; PROJECTILE NOSE SHAPE CHANGE ; PROJECTILE NOSES ; RETRACTABLE ; RETRACTABLE CAVITATOR PISTONS ; SECONDARY CAVITATORS ; SUPERCAVITATION ; TELESCOPING STRUCTURES ; TORPEDO COUNTERMEASURES ; UNDERWATER GUN SYSTEMS ; UNDERWATER MINES ; Underwater Ordnance ; UNDERWATER PROJECTILES ; VAPOROUS CAVITIES</subject><creationdate>2009</creationdate><rights>Approved for public release; distribution is unlimited.</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,780,885,27565,27566</link.rule.ids><linktorsrc>$$Uhttps://apps.dtic.mil/sti/citations/ADD020419$$EView_record_in_DTIC$$FView_record_in_$$GDTIC$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Gieseke, Thomas J</creatorcontrib><creatorcontrib>DEPARTMENT OF THE NAVY WASHINGTON DC</creatorcontrib><title>Telescoping Cavitator</title><description>This patent application discloses a high speed underwater projectile configuration that includes a cylindrical telescoping cavitator design capable of providing projectile nose shape change where such change to the projectile nose tip geometry results in supercavitation and a concomitant vaporous cavity in the water that reduces projectile drag resistance while maximizing projectile range and where the projectile nose tip further includes a retractable cavitator piston feature. The projectile nose is designed to house a cylindrical cavitator piston that protrudes forward from the projectile and is held in place until launch. Velocity induced hydrodynamic forces on the forward face of this cavitator piston cause the piston to start moving aft and to gradually cause the piston to retract into the projectile nose, until a larger, secondary cavitator is exposed to the vaporous cavity.</description><subject>CAVITATION</subject><subject>CYLINDRICAL BODIES</subject><subject>CYLINDRICAL CAVITATOR PISTONS</subject><subject>CYLINDRICAL TELESCOPING CAVITATORS</subject><subject>DRAG REDUCTION</subject><subject>Fluid Mechanics</subject><subject>HYDRODYNAMICS</subject><subject>LONG RANGE(DISTANCE)</subject><subject>MINE NEUTRALIZATION</subject><subject>NOSE TIPS</subject><subject>PATENT APPLICATIONS</subject><subject>PISTONS</subject><subject>PRIMARY CAVITATORS</subject><subject>PROJECTILE NOSE SHAPE CHANGE</subject><subject>PROJECTILE NOSES</subject><subject>RETRACTABLE</subject><subject>RETRACTABLE CAVITATOR PISTONS</subject><subject>SECONDARY CAVITATORS</subject><subject>SUPERCAVITATION</subject><subject>TELESCOPING STRUCTURES</subject><subject>TORPEDO COUNTERMEASURES</subject><subject>UNDERWATER GUN SYSTEMS</subject><subject>UNDERWATER MINES</subject><subject>Underwater Ordnance</subject><subject>UNDERWATER PROJECTILES</subject><subject>VAPOROUS CAVITIES</subject><fulltext>true</fulltext><rsrctype>report</rsrctype><creationdate>2009</creationdate><recordtype>report</recordtype><sourceid>1RU</sourceid><recordid>eNrjZBANSc1JLU7OL8jMS1dwTizLLEksyS_iYWBNS8wpTuWF0twMMm6uIc4euiklmcnxxSWZeakl8Y4uLgZGBiaGlsYEpAE8KB5o</recordid><startdate>20090313</startdate><enddate>20090313</enddate><creator>Gieseke, Thomas J</creator><scope>1RU</scope><scope>BHM</scope></search><sort><creationdate>20090313</creationdate><title>Telescoping Cavitator</title><author>Gieseke, Thomas J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-dtic_stinet_ADD0204193</frbrgroupid><rsrctype>reports</rsrctype><prefilter>reports</prefilter><language>eng</language><creationdate>2009</creationdate><topic>CAVITATION</topic><topic>CYLINDRICAL BODIES</topic><topic>CYLINDRICAL CAVITATOR PISTONS</topic><topic>CYLINDRICAL TELESCOPING CAVITATORS</topic><topic>DRAG REDUCTION</topic><topic>Fluid Mechanics</topic><topic>HYDRODYNAMICS</topic><topic>LONG RANGE(DISTANCE)</topic><topic>MINE NEUTRALIZATION</topic><topic>NOSE TIPS</topic><topic>PATENT APPLICATIONS</topic><topic>PISTONS</topic><topic>PRIMARY CAVITATORS</topic><topic>PROJECTILE NOSE SHAPE CHANGE</topic><topic>PROJECTILE NOSES</topic><topic>RETRACTABLE</topic><topic>RETRACTABLE CAVITATOR PISTONS</topic><topic>SECONDARY CAVITATORS</topic><topic>SUPERCAVITATION</topic><topic>TELESCOPING STRUCTURES</topic><topic>TORPEDO COUNTERMEASURES</topic><topic>UNDERWATER GUN SYSTEMS</topic><topic>UNDERWATER MINES</topic><topic>Underwater Ordnance</topic><topic>UNDERWATER PROJECTILES</topic><topic>VAPOROUS CAVITIES</topic><toplevel>online_resources</toplevel><creatorcontrib>Gieseke, Thomas J</creatorcontrib><creatorcontrib>DEPARTMENT OF THE NAVY WASHINGTON DC</creatorcontrib><collection>DTIC Technical Reports</collection><collection>DTIC STINET</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Gieseke, Thomas J</au><aucorp>DEPARTMENT OF THE NAVY WASHINGTON DC</aucorp><format>book</format><genre>unknown</genre><ristype>RPRT</ristype><btitle>Telescoping Cavitator</btitle><date>2009-03-13</date><risdate>2009</risdate><abstract>This patent application discloses a high speed underwater projectile configuration that includes a cylindrical telescoping cavitator design capable of providing projectile nose shape change where such change to the projectile nose tip geometry results in supercavitation and a concomitant vaporous cavity in the water that reduces projectile drag resistance while maximizing projectile range and where the projectile nose tip further includes a retractable cavitator piston feature. The projectile nose is designed to house a cylindrical cavitator piston that protrudes forward from the projectile and is held in place until launch. Velocity induced hydrodynamic forces on the forward face of this cavitator piston cause the piston to start moving aft and to gradually cause the piston to retract into the projectile nose, until a larger, secondary cavitator is exposed to the vaporous cavity.</abstract><oa>free_for_read</oa></addata></record>
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language	eng
recordid	cdi_dtic_stinet_ADD020419
source	DTIC Technical Reports
subjects	CAVITATION CYLINDRICAL BODIES CYLINDRICAL CAVITATOR PISTONS CYLINDRICAL TELESCOPING CAVITATORS DRAG REDUCTION Fluid Mechanics HYDRODYNAMICS LONG RANGE(DISTANCE) MINE NEUTRALIZATION NOSE TIPS PATENT APPLICATIONS PISTONS PRIMARY CAVITATORS PROJECTILE NOSE SHAPE CHANGE PROJECTILE NOSES RETRACTABLE RETRACTABLE CAVITATOR PISTONS SECONDARY CAVITATORS SUPERCAVITATION TELESCOPING STRUCTURES TORPEDO COUNTERMEASURES UNDERWATER GUN SYSTEMS UNDERWATER MINES Underwater Ordnance UNDERWATER PROJECTILES VAPOROUS CAVITIES
title	Telescoping Cavitator
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