EP0305040A1 - Brems- und Orientierungseinrichtung für ein Projektil - Google Patents

Brems- und Orientierungseinrichtung für ein Projektil Download PDF

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Publication number
EP0305040A1
EP0305040A1 EP19880306500 EP88306500A EP0305040A1 EP 0305040 A1 EP0305040 A1 EP 0305040A1 EP 19880306500 EP19880306500 EP 19880306500 EP 88306500 A EP88306500 A EP 88306500A EP 0305040 A1 EP0305040 A1 EP 0305040A1
Authority
EP
European Patent Office
Prior art keywords
projectile
fins
retarding
orientating
orientating apparatus
Prior art date
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.)
Withdrawn
Application number
EP19880306500
Other languages
English (en)
French (fr)
Inventor
Patrick John Green
Martin James Gregory
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.)
BAE Systems Electronics Ltd
Original Assignee
Plessey Overseas Ltd
GEC Marconi Ltd
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.)
Filing date
Publication date
Application filed by Plessey Overseas Ltd, GEC Marconi Ltd filed Critical Plessey Overseas Ltd
Publication of EP0305040A1 publication Critical patent/EP0305040A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/02—Stabilising arrangements
    • F42B10/14—Stabilising arrangements using fins spread or deployed after launch, e.g. after leaving the barrel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B22/00—Buoys
    • B63B22/003—Buoys adapted for being launched from an aircraft or water vehicle;, e.g. with brakes deployed in the water

Definitions

  • the present invention relates to projectile retarding and orientating apparatus and more particularly, but not exclusively, to such apparatus used to retard and orientate projectiles carrying detection systems prior to landing.
  • Apparatus for achieving this orientation previously has included parachute systems.
  • the parachute being stowed in the projectile prior to deployment and deployed when required.
  • projectile retarding and orienting apparatus for a projectile comprising a plurality of fins radially arranged about the perimeter of the projectile, said fins being bias to an inclined angle with respect to the projectile and adapted to be secured by securing means in parallel with the projectile.
  • a method of deploying a projectile comprising:-
  • a sonar bouy 3 carrying projectile will have in addition to the bouy 3 a launch connister 1 and securing band or ring 5.
  • the bouy 3 being secured within the connister 1 by the band 5 during projectile launch whereby the projectile may pass through a launch tube (not shown).
  • fins 7 are radially attached about the bouy 3, these fins 7 also being confined within the major diagonal of the launch consister 1 by the band 5 prior to launch.
  • the weight distribution and centre of gravity of the bouy 3 ensure the fins 7 are inclined into the air flow during flight ( Figure 1 (b)).
  • the fins 7 induce spin into the flight of the bouy 3 increasing its stability in flight, while the increased drag coefficient provides retardation of the bouy's terminal belocity thus ensuring a fofter impact of the bouy on landing.
  • the fins 7 may be constructed of material such as sprung steel in order that when the securing band 5 is released their material memory propells them into the inclined aspect in the air flow. Alternatively, it will be appreciated that the fins 7 could be lunged and biased to an inclined aspect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Toys (AREA)
EP19880306500 1987-07-15 1988-07-15 Brems- und Orientierungseinrichtung für ein Projektil Withdrawn EP0305040A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB878716718A GB8716718D0 (en) 1987-07-15 1987-07-15 Projectile retarding & orientating apparatus
GB8716718 1987-07-15

Publications (1)

Publication Number Publication Date
EP0305040A1 true EP0305040A1 (de) 1989-03-01

Family

ID=10620718

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880306500 Withdrawn EP0305040A1 (de) 1987-07-15 1988-07-15 Brems- und Orientierungseinrichtung für ein Projektil

Country Status (3)

Country Link
EP (1) EP0305040A1 (de)
CN (1) CN1032859A (de)
GB (1) GB8716718D0 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0481795A1 (de) * 1990-10-19 1992-04-22 Gec-Marconi Limited Vom Flugzeug abzuwerfende Boje
US5108326A (en) * 1991-03-05 1992-04-28 Seimac Limited Flexible surface drogue/stabilizer for drifter buoys
US8206193B2 (en) * 2005-06-29 2012-06-26 Abyssus Marine Services As Accoustic buoy

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3220028A (en) * 1962-03-10 1965-11-30 Electronique Appliquee Radio-sono-buoys
DE2139071B2 (de) * 1970-08-20 1975-02-20 Werkzeugmaschinenfabrik Oerlikonbuehrle Ag, Zuerich (Schweiz) Geschoß mit Bremsflügeln
US4033529A (en) * 1976-02-27 1977-07-05 Sanders Associates, Inc. Drogue release apparatus
CH625879A5 (de) * 1976-12-27 1981-10-15 Bofors Ab

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3220028A (en) * 1962-03-10 1965-11-30 Electronique Appliquee Radio-sono-buoys
DE2139071B2 (de) * 1970-08-20 1975-02-20 Werkzeugmaschinenfabrik Oerlikonbuehrle Ag, Zuerich (Schweiz) Geschoß mit Bremsflügeln
US4033529A (en) * 1976-02-27 1977-07-05 Sanders Associates, Inc. Drogue release apparatus
CH625879A5 (de) * 1976-12-27 1981-10-15 Bofors Ab

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0481795A1 (de) * 1990-10-19 1992-04-22 Gec-Marconi Limited Vom Flugzeug abzuwerfende Boje
GB2248804A (en) * 1990-10-19 1992-04-22 Marconi Gec Ltd Air-launched buoys
US5108326A (en) * 1991-03-05 1992-04-28 Seimac Limited Flexible surface drogue/stabilizer for drifter buoys
US8206193B2 (en) * 2005-06-29 2012-06-26 Abyssus Marine Services As Accoustic buoy

Also Published As

Publication number Publication date
CN1032859A (zh) 1989-05-10
GB8716718D0 (en) 1988-02-17

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

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Designated state(s): DE ES FR IT NL SE

17P Request for examination filed

Effective date: 19890816

17Q First examination report despatched

Effective date: 19900920

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GEC-MARCONI LIMITED

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19910131