EP0362522A1 - Tête de contact pour munition fumigène - Google Patents

Tête de contact pour munition fumigène Download PDF

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Publication number
EP0362522A1
EP0362522A1 EP89115036A EP89115036A EP0362522A1 EP 0362522 A1 EP0362522 A1 EP 0362522A1 EP 89115036 A EP89115036 A EP 89115036A EP 89115036 A EP89115036 A EP 89115036A EP 0362522 A1 EP0362522 A1 EP 0362522A1
Authority
EP
European Patent Office
Prior art keywords
propellant charge
contact head
piston
chamber
charge chamber
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.)
Ceased
Application number
EP89115036A
Other languages
German (de)
English (en)
Inventor
Willi Lübbers
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.)
Nico Pyrotechnik Hanns Juergen Diederichs GmbH and Co KG
Original Assignee
Nico Pyrotechnik Hanns Juergen Diederichs GmbH and Co KG
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 Nico Pyrotechnik Hanns Juergen Diederichs GmbH and Co KG filed Critical Nico Pyrotechnik Hanns Juergen Diederichs GmbH and Co KG
Publication of EP0362522A1 publication Critical patent/EP0362522A1/fr
Ceased 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
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/145—Cartridges, i.e. cases with charge and missile for dispensing gases, vapours, powders, particles or chemically-reactive substances
    • F42B5/15—Cartridges, i.e. cases with charge and missile for dispensing gases, vapours, powders, particles or chemically-reactive substances for creating a screening or decoy effect, e.g. using radar chaff or infrared material
    • F42B5/155—Smoke-pot projectors, e.g. arranged on vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A1/00—Missile propulsion characterised by the use of explosive or combustible propellant charges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/08—Cartridges, i.e. cases with charge and missile modified for electric ignition

Definitions

  • the invention relates to a contact head for smoke projectors according to the preamble of claim 1.
  • a propellant charge chamber made of steel is provided in the contact head of the smoke throwing body, in which a propellant charge, preferably nitroglycerin or nitrocellulose powder, is received. After igniting this propellant charge via the contact rings and an ignition charge with z. B. a bridge igniter, the propellant burns off and the propellant gases flow through the blow-out opening in the cup, so that a pressure builds up there, which ultimately leads to the expulsion of the smoke nozzle. Furthermore, a delay charge is ignited with the aid of the propellant charge gases and is located in a channel branching off from the propellant charge chamber. This delay charge is then used to ignite a mist salt of the smoke nozzle.
  • a propellant charge preferably nitroglycerin or nitrocellulose powder
  • the steel propellant charge chamber is inserted centrally in the contact head and has at its bottom a plurality of blow-out openings which are distributed over the circumference and directed obliquely downward, through which the propellant gases enter the throwing cup in a throttled manner.
  • the internal pressure in the propellant charge chamber when the propellant charge burns off also initially leads to relatively high pressure peaks within the cup, so that the mist launcher is initially accelerated very high, after which the acceleration decreases relatively strongly until it is expelled from the throwing cup.
  • the invention has for its object to provide a contact head for a smoke missile, which has a simple construction, can be easily installed in the contact head and are reduced during the pressure peaks within the propellant charge chamber and in the throwing cup, so that the fog throwing body accelerates evenly within the fog throwing cup will be achieved and long shot ranges.
  • the propellant charge chamber is separated into a receptacle accommodating the propellant charge and a gas space, which are separated from one another by a piston held at a predetermined breaking point.
  • the blow-off hole branches off from the gas space. If the propellant charge is ignited, a gas pressure builds up in the receiving space, which breaks the predetermined breaking point at a certain value, so that the piston is moved into the gas space and releases the blow-out bore after a certain distance. As a result, the propellant gases in the propellant charge chamber can expand, so that the overall pressure is reduced.
  • the propellant gas flowing out of the blow-out opening builds up a uniform pressure in the throwing cup, as a result of which the smoke impingement body is expelled with high, constant acceleration which acts practically over the entire length of the throwing cup.
  • the firing range of such a smoke missile can be increased noticeably compared to known smoke missiles, almost up to twice the value. Throwing distances of around 35 to 40 m can be achieved with only 10 bar.
  • the pressure profile of the propellant gas in the throwing cup can be further improved and evened out if the piston has a through hole connecting the receiving space and the gas space.
  • the propellant charge chamber is preferably constructed as a structural unit made of steel that receives the priming charge and is inserted laterally into the contact head. This also simplifies assembly. In particular, the connection of the electrical leads from the ignition charge to the contact rings is considerably simplified. This enables economical production.
  • a smoke nozzle 1 has a can 2 with a fog salt 3 and a contact head 4 attached to the underside of the can.
  • the can 2 is covered with an upper lid 5.
  • the smoke missile is inserted into a throwing cup 6, the cover 5 being supported on the upper edge of the throwing cup.
  • the just like the socket 2 cylindrical contact head 4 has Housing 7 z. B. made of plastic, in which a propellant charge 8 is inserted from the side as a closed structural unit, which extends transversely to the longitudinal axis of the mist body 1 approximately over the entire diameter of the contact head 4.
  • the contact head 4 also has recesses 9 facing the bottom of the throwing cup 6.
  • the propellant charge chamber 8 has a steel cylinder 10 which is open on one side and which is closed at its open end with a screw cap 11.
  • An ignition charge 12 is inserted into the screw cap 11, the electrical leads 13 of which are connected to contact rings 14 on the circumference of the contact head 4.
  • a spacer ring 15 is also provided between the screw cap 11 and the outer wall of the contact head, which receives the contact rings 14.
  • the space of the propellant charge chamber adjoining the screw cap 11 is divided into a receiving space 16 for a propellant charge 17 and a gas space 18, which are separated from one another by a cup-shaped piston 19.
  • the open end of the cup wall of the piston is screwed to a threaded extension 20 of the screw cap 11.
  • the cup wall is weakened approximately at half the height of the piston by an annular groove, which serves as a predetermined breaking point 21.
  • the actual piston surface is provided with a central through bore 24 which connects the receiving space 17 with the gas space 18.
  • the outer wall of the gas space 18 is tapered in the area of its base 25 in the direction thereof, so that a slope 26 is formed here.
  • a blow-out bore 27 made in the outer wall branches off from the gas space and leads into a larger bore 28 in the lower wall of the contact head 4 opens out with an easily destructible seal 29, for. B. a film is closed.
  • a through-bore 30 is located, facing the can 2 of the mist body 1, which opens into a channel 31 in which a delay charge 32 for igniting the mist salt 3 is arranged.
  • an easily destructible cover 33 for. B. a film is provided.
  • the through hole 17 in the piston 19 can be closed with a similar cover 34.
  • the propellant charge 17 ignites and burns off continuously. After a short time, the cover 34 is destroyed, so that propellant gas flows into the gas space 18 via the through hole 17. If this pressure reaches a certain level, the seal 29 covering the bore 28 is also torn open, so that propellant gas is already flowing into the throwing cup. If the pressure of the propellant gases in the receiving space 16 reaches an even higher value, the predetermined breaking point 21 breaks open, as a result of which the remainder of the piston 19 in the gas space 18 is driven towards the bottom 25 thereof. The gas volume located on the right of the piston 19 in FIG. 2 is compressed. The piston 19 finally runs against the slope 26 and is braked gently. Shortly beforehand, as shown in FIG.
  • the blow-out bore 27 has been released so that propellant gas flows into the throwing cup and the smoke nozzle from the throwing cup sprouts.
  • the blow-through bore 13 has also been released, so that after the cover 31 has been destroyed, the delay charge 32 has been ignited and ignites the mist salt 3 after it has burned up.
  • the propellant gas compressed by the piston 19 in the gas space 18 flows through the through bore 24, as indicated by an arrow in FIG. 3, and also leaves the propellant charge chamber 8 through the blowout bore 27.
  • the pressure curve in the throwing cup below the smoke nozzle is shown in FIG. 5.
  • the pressure rises to about 10 bar relatively quickly within 2 ms, remains at this level for a long time and then gradually drops. If the through bore 24 is provided in the piston 19, the pressure drops relatively flatter than if no through bore 24 is provided, as is shown in broken lines in FIG. 5.
  • the maximum permissible pressure of 13.5 bar within the throwing cup is not reached. Nevertheless, due to the relatively constant pressure over a wide range, a high ejection acceleration is achieved, so that throwing distances of 35 m are achieved.
  • a propellant charge chamber 8 is shown, which is constructed similarly to that shown in FIGS. 2 and 3, so that a detailed description is unnecessary. Differences only exist with regard to the design of the piston 19 'and the gas space 18 in the region of the bottom 25.
  • the piston 19' has on its periphery a web 41 resting against the wall of the propellant charge chamber 8. The outer edges of the bottom 25 are rounded, so that a Ramp surface 26 is formed. If the piston 19 'is accelerated after breaking the predetermined breaking point 21 towards the bottom 25, the web 41 deforms when it hits the surface 26', as shown in FIG. 7. The web 41 is used in conjunction with the run-up surface 26 'to gently brake the piston 19' when it runs into its end position shown in FIG. 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Circuit Breakers (AREA)
  • Air Bags (AREA)
  • Paper (AREA)
  • Types And Forms Of Lifts (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Toys (AREA)
EP89115036A 1988-08-16 1989-08-15 Tête de contact pour munition fumigène Ceased EP0362522A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3827784 1988-08-16
DE3827784A DE3827784A1 (de) 1988-08-16 1988-08-16 Kontaktkopf fuer einen nebelwurfkoerper

Publications (1)

Publication Number Publication Date
EP0362522A1 true EP0362522A1 (fr) 1990-04-11

Family

ID=6360960

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89115036A Ceased EP0362522A1 (fr) 1988-08-16 1989-08-15 Tête de contact pour munition fumigène

Country Status (7)

Country Link
EP (1) EP0362522A1 (fr)
DE (1) DE3827784A1 (fr)
DK (1) DK400589A (fr)
FI (1) FI893715A (fr)
NO (1) NO893060L (fr)
PT (1) PT91462A (fr)
YU (1) YU159789A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2773501A1 (fr) * 1998-01-15 1999-07-16 Gaz Protection Systemes Sarl Dispositif de blocage par equilibrage de pressions pour la diffusion d'un produit contenu dans un aerosol insere dans un tube
ES2270671A1 (es) * 2004-10-18 2007-04-01 Fabrica Nacional De La Marañosa Mezcla pirotecnica y artificio pirotecnico.

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4328581A1 (de) * 1993-08-25 1995-03-02 Nico Pyrotechnik Nebelwurfkörper
DE19738937C2 (de) * 1997-09-05 1999-07-29 Nico Pyrotechnik Patronierte Munition
DE102016015042B4 (de) 2016-12-16 2018-08-23 Diehl Defence Gmbh & Co. Kg Munitionsmodul, Gefechtskopf und Munition

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3501468A1 (de) * 1984-04-03 1985-10-10 Pyrotechnische Fabrik F. Feistel GmbH + Co KG, 6719 Göllheim Nebelwurfkoerper
DE2811016C1 (de) * 1978-03-14 1986-07-17 Buck Chemisch-Technische Werke Gmbh & Co, 8230 Bad Reichenhall Wurfkoerper
DE3507643A1 (de) * 1985-03-05 1986-09-11 Nico-Pyrotechnik Hanns-Jürgen Diederichs GmbH & Co KG, 2077 Trittau Patronierte munition
DE3534197A1 (de) * 1985-09-25 1987-04-16 Buck Chem Tech Werke Elektrisch zuendbare ausstossvorrichtung fuer in einem duennwandigen abschussrohr angeordnete stossempfindliche subkoerper

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2811016C1 (de) * 1978-03-14 1986-07-17 Buck Chemisch-Technische Werke Gmbh & Co, 8230 Bad Reichenhall Wurfkoerper
DE3501468A1 (de) * 1984-04-03 1985-10-10 Pyrotechnische Fabrik F. Feistel GmbH + Co KG, 6719 Göllheim Nebelwurfkoerper
DE3507643A1 (de) * 1985-03-05 1986-09-11 Nico-Pyrotechnik Hanns-Jürgen Diederichs GmbH & Co KG, 2077 Trittau Patronierte munition
DE3534197A1 (de) * 1985-09-25 1987-04-16 Buck Chem Tech Werke Elektrisch zuendbare ausstossvorrichtung fuer in einem duennwandigen abschussrohr angeordnete stossempfindliche subkoerper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2773501A1 (fr) * 1998-01-15 1999-07-16 Gaz Protection Systemes Sarl Dispositif de blocage par equilibrage de pressions pour la diffusion d'un produit contenu dans un aerosol insere dans un tube
ES2270671A1 (es) * 2004-10-18 2007-04-01 Fabrica Nacional De La Marañosa Mezcla pirotecnica y artificio pirotecnico.

Also Published As

Publication number Publication date
NO893060D0 (no) 1989-07-27
NO893060L (no) 1990-02-19
FI893715A0 (fi) 1989-08-07
DE3827784A1 (de) 1990-03-01
DK400589D0 (da) 1989-08-15
FI893715A (fi) 1990-02-17
PT91462A (pt) 1990-03-08
DK400589A (da) 1990-02-17
YU159789A (sh) 1994-01-20

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