EP0117967A1 - Dispositif contenant un parachute s'ouvrant instantanément pour obus élairant de mortier - Google Patents

Dispositif contenant un parachute s'ouvrant instantanément pour obus élairant de mortier Download PDF

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Publication number
EP0117967A1
EP0117967A1 EP83830263A EP83830263A EP0117967A1 EP 0117967 A1 EP0117967 A1 EP 0117967A1 EP 83830263 A EP83830263 A EP 83830263A EP 83830263 A EP83830263 A EP 83830263A EP 0117967 A1 EP0117967 A1 EP 0117967A1
Authority
EP
European Patent Office
Prior art keywords
cheeks
illuminating
parachute
bomb
containing device
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.)
Granted
Application number
EP83830263A
Other languages
German (de)
English (en)
Other versions
EP0117967B1 (fr
Inventor
Rodolfo Andreetta
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.)
Simmel Difesa SpA
Original Assignee
Simmel 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.)
Filing date
Publication date
Application filed by Simmel SpA filed Critical Simmel SpA
Priority to AT83830263T priority Critical patent/ATE23633T1/de
Publication of EP0117967A1 publication Critical patent/EP0117967A1/fr
Application granted granted Critical
Publication of EP0117967B1 publication Critical patent/EP0117967B1/fr
Expired 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
    • F42B10/32—Range-reducing or range-increasing arrangements; Fall-retarding means
    • F42B10/48—Range-reducing, destabilising or braking arrangements, e.g. impact-braking arrangements; Fall-retarding means, e.g. balloons, rockets for braking or fall-retarding
    • F42B10/56—Range-reducing, destabilising or braking arrangements, e.g. impact-braking arrangements; Fall-retarding means, e.g. balloons, rockets for braking or fall-retarding of parachute or paraglider type

Definitions

  • the present invention relates to instantaneous opening pa rachute containing devices for illuminating mortar bombs.
  • the operation which particularly requires this separation is the opening of the parachute which is indispensable for providing a controlled speed fall.
  • the parachute containing function is performed by the use of two or more cylindrical segments referred to as cheeks which are so dimensioned as to abut, by means of their outer surface, the inner surface of the bomb and, by means of their inner surface, the suitably folded and sub - - ' sequently packed parachute.
  • the parachute containing device of the type consisting of two or more cheeks formed by cylindrical segments abutting, by means of their outer surfaces, the bomb shell and, by means of their inner surface, the folded and packed parachute, is characterized in that it comprises a leaf spring disposed, in a preloaded condition, in a seat provided in the cheeks, said spring being intended to stretch out after the ejection of the illuminating canister from the bomb and to draw the cheeks mutually away.
  • the cheeks in order to increase the resisting surface, have a number of holes and bear a sheet of plastic material or cloth applied thereto which is intended to stretch out at the se paration of the device.
  • the illuminating bomb 1 carries inside a shell 2, an illuminating canister 3, shown only fragmentarily, hooked at 4 to a parachute 5 which is folded and packed within a defined space as will be explained hereinafter.
  • a parachute 5 Disposed between the shell 2 of the bomb and the parachute 5 are two cheeks 6,7 which are obtained by sectioning a cylinder along two generating lines and abut by means of their front faces, on the one side the illuminating canister and on the opposite side a wall 8 interposed between the cheeks and a base plug 9 connected to the shell 2 of the bomb by means of shear pins 10.
  • the space within which the parachute 5 is contained is defined on the two opposite front sides by the illuminating canister 3 .. and the wall 8 and on the cylindrical side by the inner walls of the cheeks 6,7.
  • the thickness of the cheeks is thinner at the end on the side of the illuminating canister to provide a depression 11 forming the seat for a leaf spring 12 inserted in said seat in a preloaded condi tion.
  • the described parachute containing device operates as follows:
  • the preloaded leaf spring l2 stretch es out and causes a mutual drawing away of the cheeks 6,7 as shown in Fig. 2.
  • the condition of maximum stretching out of the spring assures a sufficient drawing away of the cheeks for preventing that they fall on the parachute when the latter is opening.
  • the drawing away effect can be enhanced by providing the cheeks with holes 13 and applying to them a sheet l4 of suitable material which can stretch out when the device is separated because of the air intercepted by the holes thus increasing the resistant surface and decreasing as a result the fall speed.
  • materials for the sheet 14 there can be taken into consideration plastic films, such as polyesters, polyamides or polyolefines, or cloths, f.e. cotton or nylon cloths.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
  • Reciprocating Pumps (AREA)
EP83830263A 1983-01-05 1983-12-12 Dispositif contenant un parachute s'ouvrant instantanément pour obus élairant de mortier Expired EP0117967B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83830263T ATE23633T1 (de) 1983-01-05 1983-12-12 Augenblicklich oeffnende, einen fallschirm enthaltende vorrichtung fuer moerserleuchtgranaten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT19014/83A IT1159808B (it) 1983-01-05 1983-01-05 Dispositivo di contenimento per paracadute ad apertura istantanea per bombe illuminanti da mortaio
IT1901483 1983-01-05

Publications (2)

Publication Number Publication Date
EP0117967A1 true EP0117967A1 (fr) 1984-09-12
EP0117967B1 EP0117967B1 (fr) 1986-11-12

Family

ID=11153847

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83830263A Expired EP0117967B1 (fr) 1983-01-05 1983-12-12 Dispositif contenant un parachute s'ouvrant instantanément pour obus élairant de mortier

Country Status (5)

Country Link
EP (1) EP0117967B1 (fr)
AT (1) ATE23633T1 (fr)
DE (1) DE3367672D1 (fr)
ES (1) ES528651A0 (fr)
IT (1) IT1159808B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2602584A1 (fr) * 1986-08-08 1988-02-12 Esperanza & Cie Sa Projectile porteur pour mortier
EP0144293B1 (fr) * 1983-11-30 1988-09-07 SIMMEL DIFESA S.p.A. Dispositif de dispersion de sous-munitions hors d'un projectile porteur non-rotatif

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1578141B (de) * Forsvarets Fabnksverk, Eskilstuna (Schweden) Leuchtgranate
CH216981A (fr) * 1938-07-30 1941-09-30 Holding Generale De Brevets So Projectile éclairant.
FR1565378A (fr) * 1967-11-28 1969-05-02

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1578141B (de) * Forsvarets Fabnksverk, Eskilstuna (Schweden) Leuchtgranate
CH216981A (fr) * 1938-07-30 1941-09-30 Holding Generale De Brevets So Projectile éclairant.
FR1565378A (fr) * 1967-11-28 1969-05-02

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0144293B1 (fr) * 1983-11-30 1988-09-07 SIMMEL DIFESA S.p.A. Dispositif de dispersion de sous-munitions hors d'un projectile porteur non-rotatif
FR2602584A1 (fr) * 1986-08-08 1988-02-12 Esperanza & Cie Sa Projectile porteur pour mortier
GB2193795A (en) * 1986-08-08 1988-02-17 Esperanza & Cie Sa A mortar carrier projectile
GB2193795B (en) * 1986-08-08 1990-01-10 Esperanza & Cie Sa A mortar carrier projectile

Also Published As

Publication number Publication date
EP0117967B1 (fr) 1986-11-12
DE3367672D1 (en) 1987-01-02
ES8502252A1 (es) 1984-12-16
ES528651A0 (es) 1984-12-16
IT8319014A0 (it) 1983-01-05
IT1159808B (it) 1987-03-04
ATE23633T1 (de) 1986-11-15

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