EP2022715A1 - Submarine Gegenmaßnahmenabwurfvorrichtung - Google Patents

Submarine Gegenmaßnahmenabwurfvorrichtung Download PDF

Info

Publication number: EP2022715A1
Authority: EP; European Patent Office
Prior art keywords: gas; pressurized; shutter; shaped body; cylinder
Prior art date: 2007-07-24
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP07425452A

Other languages

English (en)

French (fr)

Other versions

EP2022715B1 (de

Inventor

Massimo Benvenuti

Giovanni Calvo

Maurizio Lazzerini

Vincenzo Campoccio

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Whitehead Sistemi Subacquei SpA

Original Assignee

Whitehead Alenia Sistemi Subacquei SpA

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

2007-07-24

Filing date

2007-07-24

Publication date

2009-02-11

2007-07-24 Application filed by Whitehead Alenia Sistemi Subacquei SpA filed Critical Whitehead Alenia Sistemi Subacquei SpA

2007-07-24 Priority to AT07425452T priority Critical patent/ATE451298T1/de

2007-07-24 Priority to EP07425452A priority patent/EP2022715B1/de

2007-07-24 Priority to DE602007003712T priority patent/DE602007003712D1/de

2008-07-22 Priority to SG200805428-0A priority patent/SG149777A1/en

2009-02-11 Publication of EP2022715A1 publication Critical patent/EP2022715A1/de

2009-12-09 Application granted granted Critical

2009-12-09 Publication of EP2022715B1 publication Critical patent/EP2022715B1/de

Status Active legal-status Critical Current

2027-07-24 Anticipated expiration legal-status Critical

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Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/28—Arrangement of offensive or defensive equipment
- B63G8/30—Arrangement of offensive or defensive equipment of artillery or missile launching means

Definitions

the present invention relates to a submarine countermeasure launching device.
Countermeasure (Jammer or Decoy) launching devices comprising a launch tube housing the countermeasure; a cylinder of pressurized gas; and a feed system for feeding the gas from the cylinder to the launch tube.
the gas feed system comprises a shutter movable between a closed position closing at least one feed opening in the feed system to prevent pressurized-gas flow from the cylinder to the launch tube, and an open position allowing pressurized-gas flow through the feed opening to the launch tube.
the countermeasure be distanced as far and as fast as possible from the launch tube.
the device 1 ( Figures 1 and 2 ) comprises a launch tube 2 for a countermeasure 3 (e.g. a known. Jammer or Decoy); a cylinder 5 of high-pressure gas; and a feed system 7 for feeding gas from the cylinder to launch tube 2.
a countermeasure 3 e.g. a known. Jammer or Decoy
a cylinder 5 of high-pressure gas e.g. a known. Jammer or Decoy
a feed system 7 for feeding gas from the cylinder to launch tube 2.
launch tube 2 defines an inner cylindrical cavity 8 ( Figure 1 ) coaxial with an axis 9, and comprises a rear portion 8p connected to feed system 7, and a front portion 8a having a launch opening 12 closable by a partition 13 crosswise to axis 9. Partition 13 thus closes cylindrical cavity 8, so countermeasure 3 can be immersed in a protective liquid (not shown) flooding cavity 8; and partition 13 is shattered when countermeasure 3 is fired.
Feed system 7 defines an inlet (detailed below); and an outlet 14 which communicates with, to feed pressurized gas into, cylindrical cavity 8.
Feed system 7 comprises a number of known safety valves 16 (not described in detail) for preventing accidental firing of countermeasure 3.
Feed system 7 is formed inside a metal body 18, coaxial with axis 9, and comprising a front portion connected to launch tube 2, and a rear portion to which cylinder 5 is fitted.
the rear portion of body 18 has a cylindrical seat 20 coaxial with axis 9 and bounded laterally by an internally threaded annular wall 21.
Cylindrical seat 20 is also bounded by a flat wall 22 perpendicular to axis 9, and in which is formed a cylindrical cavity 24 coaxial with axis 9 and defining an inlet of feed system 7.
Cylindrical cavity 24 communicates with a feed conduit 26 formed inside metal body 18 and for feeding pressurized gas to outlet 14 via safety valves 16. Cylindrical cavity 24 has a constant radius R, and the inlet of feed conduit 26 is smaller across than the diameter 2R of cylindrical cavity 24.
a metal ring 27 rests on an end surface of cavity 24, and defines a circular opening 28 through which pressurized gas flows from cylindrical cavity 24 into feed conduit 26.
Opening 28 is normally closed by a shutter 30 which, in a work position, presses against metal ring 27 to cut off pressurized-gas flow.
Shutter 30 comprises a cup-shaped body 31 which slides axially along a support 32 housed inside cavity 24, detached radially from the walls of cavity 24, and supported by flanges 34 extending radially from an end portion of support 32 to a tubular sleeve 35 interposed between metal body 18 and cylinder 5.
Tubular sleeve 35 permits pressurized-gas flow from cylinder 5 to cylindrical cavity 24.
support 32 comprises a first cylindrical portion 36 coaxial with axis 9 and of radius L1; and a second cylindrical portion 37 integral with portion 36, coaxial with axis 9, and of a larger radius L2 than radius L1.
Second cylindrical portion 37 has an inner cylindrical cavity 38 opening outwards of support 32 and communicating with a conduit 39 extending the whole length of first cylindrical portion 36 and coaxial with axis 9. Second cylindrical portion 37 is positioned facing metal ring 27.
Cup-shaped body 31 comprises a tubular portion 40 fitted to second cylindrical portion 37 and an end wall 42 integral with portion 40 and having an isosceles-trapezium-shaped cross section.
the side of the isosceles trapezium thus defines an annular bevel 43 of cup-shaped body 31, which rests on metal ring 27 to close opening 28.
Shutter 30 also comprises a helical spring 45 interposed between cup-shaped body 31 and support 32. More specifically, helical spring 45 has a first end housed in cavity 38, and a second end portion which presses against the inner side of wall 42.
Cup-shaped body 31 and the second cylindrical portion internally define a variable-volume chamber 47 communicating with conduit 39.
a labyrinth seal system 48 allowing passage of a limited amount of gas, is formed between the outer surface of second cylindrical portion 37 and the inner wall of tubular portion 40.
Cylinder 5 comprises an end portion 5f screwed to wall 21 of metal body 18, and defines an inner cavity 50 communicating with cylindrical cavity 24; and conduit 39 communicates with a tube 52 extending through cavity 50, coaxially with axis 9.
variable-volume chamber 47 In use, at rest, high-pressure gas (normally compressed air or nitrogen, possibly at over 300 bar pressure) is contained inside cylindrical cavity 24, and exerts pressure on the walls of cup-shaped body 31; and the pressure inside variable-volume chamber 47 equals the pressure inside cylindrical cavity 24, i.e. outside chamber 47, by virtue of the pressurized gas seeping into variable-volume chamber 47 through seal system 48.
high-pressure gas normally compressed air or nitrogen, possibly at over 300 bar pressure
spring 45 keeps bevel 43 resting firmly on metal ring 27, and, hence, shutter 30 in a stable closed position closing circular opening 28 and preventing gas flow from cylinder 5 to launch tube 2.
variable-volume chamber 47 is depressurized by drawing off pressurized gas along conduit 39 and tube 52.
the pressure in chamber 47 falls rapidly to well below the pressure in cylindrical cavity 24; by virtue of the difference in pressure between the inside and outside of chamber 47, the pressure on cup-shaped body 31 pushes it axially towards support 32 in opposition to spring 45, thus compressing the spring and also reducing the volume of chamber 47; and bevel 43 is detached from metal ring 27, thus moving shutter 30 into an open position (not shown) in which pressurized gas flows from cylinder 5 to launch tube 2 to launch countermeasure 3.
Shutter 30 is thus opened easily despite the high pressure of the gas inside cylinder 5.
the high pressure in fact, actually assists in moving cup-shaped body 31 and so opening shutter 30 rapidly.
Countermeasure launching device 1 also comprises an exhaust valve 60 ( Figures 4, 5 ) connected at the inlet to the outlet of tube 52 to exhaust pressurized gas from, and so depressurize, chamber 47.
Valve 60 is conveniently formed in a disk-shaped body 62 fitted to a rear portion of cylinder 5.
Valve 60 comprises a shaft 64 housed inside a substantially cylindrical cavity 66 and coaxial with the axis 67 of cylindrical cavity 66.
Shaft 64 is movable axially between a first closed position ( Figure 4 ), in which valve 60 intercepts the compressed air from tube 52, and an open position ( Figure 5 ), in which valve 60 allows compressed-air flow from chamber 47 to the outside of launching device 1 thus actuating depressurization as described above.
Shaft 64 comprises a first cylindrical portion 64a, having diameter T1, connected by a bevelled portion 64f to a second cylindrical portion 64b of diameter T2 larger than T1.
second cylindrical portion 64b is integral with a wider portion 69, on which a cam profile 68 is formed.
Shaft 64 has an inner cavity 70 coaxial with axis 67 and communicating with the outside of shaft 64 through a first number of holes 72 opening in the surface of portion 64a, close to bevelled portion 64f.
Inner cavity 70 also communicates with the outside of shaft 64 through a second number of holes 74 formed in the surface of portion 64b and spaced axially apart from holes 72.
Shaft 64 is partly surrounded by a seal 76 located between cylindrical cavity 66 and the outer surface of shaft 64.
Seal 76 comprises portions contacting cylindrical portions 64a and 64b to form a gas seal with shaft 64, and also comprises a sunken portion detached from the surface of the shaft and defining a toroidal chamber 80 surrounding the shaft at the join between portions 64a and 64b.
the pressurized gas from tube 52 is fed into toroidal chamber 80 through holes 82 formed through seal 76.
the pressurized gas thus acts on cylindrical portion 64a of diameter T1, and on cylindrical portion 64b of diameter T2. And, since the outer surface of portion 64b on which the pressurized gas acts is greater than the outer surface of portion 64a, because of the difference in diameter, portions 64a and 64b are subjected to forces whose resultant moves the shaft axially in the direction indicated by the arrow in Figures 4 and 5 and extending from portion 64a to portion 64b.
Cam profile 68 mates with a complementary cam profile formed on a sprocket 84 rotated about axis 67 by an electric motor 85 positioned with its axis parallel to axis 67 and housed inside a cavity formed in body 62 and parallel to cylindrical cavity 66. More specifically, a transmission 100 is interposed between sprocket 84 and the output shaft 85b ( Figure 4 ) of electric motor 85, and comprises a first gear 101 fitted to output shaft 85b of electric motor 85, and a second gear 102 fitted to rotating element 84, coaxially with axis 67.
Electric motor 85 rotates rotating element 84, with respect to cam profile 68, between two limit angular positions:
shaft 64 When allowed by the setting of rotating element 84, shaft 64 is moved from the first to the second axial position by the pressure difference referred to above.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Aviation & Aerospace Engineering (AREA)
Pipe Accessories (AREA)
Sliding Valves (AREA)
Sealing Devices (AREA)
Paper (AREA)
Manufacturing Of Electric Cables (AREA)

EP07425452A 2007-07-24 2007-07-24 Submarine Gegenmaßnahmenabwurfvorrichtung Active EP2022715B1 (de)

Priority Applications (4)

Application Number	Priority Date	Filing Date	Title
AT07425452T ATE451298T1 (de)	2007-07-24	2007-07-24	SUBMARINE GEGENMAßNAHMENABWURFVORRICHTUNG
EP07425452A EP2022715B1 (de)	2007-07-24	2007-07-24	Submarine Gegenmaßnahmenabwurfvorrichtung
DE602007003712T DE602007003712D1 (de)	2007-07-24	2007-07-24	Submarine Gegenmaßnahmenabwurfvorrichtung
SG200805428-0A SG149777A1 (en)	2007-07-24	2008-07-22	Submarine countermeasure launching device

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP07425452A EP2022715B1 (de)	2007-07-24	2007-07-24	Submarine Gegenmaßnahmenabwurfvorrichtung

Publications (2)

Publication Number	Publication Date
EP2022715A1 true EP2022715A1 (de)	2009-02-11
EP2022715B1 EP2022715B1 (de)	2009-12-09

Family

ID=39102240

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP07425452A Active EP2022715B1 (de)	2007-07-24	2007-07-24	Submarine Gegenmaßnahmenabwurfvorrichtung

Country Status (4)

Country	Link
EP (1)	EP2022715B1 (de)
AT (1)	ATE451298T1 (de)
DE (1)	DE602007003712D1 (de)
SG (1)	SG149777A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5117731A (en) *	1991-11-04	1992-06-02	The United States Of America As Represented By The Secretary Of The Navy	Tactical acoustic decoy
US6386133B1 (en) *	2000-09-06	2002-05-14	The United States Of America As Represented By The Secretary Of The Navy	Torpedo tube shutter-pressure release
DE10324180B3 (de) *	2003-05-28	2004-09-30	Nordseewerke Gmbh	Vorrichtung als Lager und Startvorrichtung
US6854409B1 (en) *	2003-06-06	2005-02-15	The United States Of America As Represented By The Secretary Of The Navy	Rotary electromagnetic launch tube
EP1580117A2 (de) *	2004-03-23	2005-09-28	Howaldtswerke-Deutsche Werft GmbH	Verfahren zum Flüssigkeitsbefüllen von Effektor-Starterrohren

2007
- 2007-07-24 DE DE602007003712T patent/DE602007003712D1/de active Active
- 2007-07-24 AT AT07425452T patent/ATE451298T1/de not_active IP Right Cessation
- 2007-07-24 EP EP07425452A patent/EP2022715B1/de active Active
2008
- 2008-07-22 SG SG200805428-0A patent/SG149777A1/en unknown

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5117731A (en) *	1991-11-04	1992-06-02	The United States Of America As Represented By The Secretary Of The Navy	Tactical acoustic decoy
US6386133B1 (en) *	2000-09-06	2002-05-14	The United States Of America As Represented By The Secretary Of The Navy	Torpedo tube shutter-pressure release
DE10324180B3 (de) *	2003-05-28	2004-09-30	Nordseewerke Gmbh	Vorrichtung als Lager und Startvorrichtung
US6854409B1 (en) *	2003-06-06	2005-02-15	The United States Of America As Represented By The Secretary Of The Navy	Rotary electromagnetic launch tube
EP1580117A2 (de) *	2004-03-23	2005-09-28	Howaldtswerke-Deutsche Werft GmbH	Verfahren zum Flüssigkeitsbefüllen von Effektor-Starterrohren

Also Published As

Publication number	Publication date
DE602007003712D1 (de)	2010-01-21
SG149777A1 (en)	2009-02-27
ATE451298T1 (de)	2009-12-15
EP2022715B1 (de)	2009-12-09

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