EP0108013B1 - Dispositif et projectile déclencheurs d'avalanches - Google Patents

Dispositif et projectile déclencheurs d'avalanches Download PDF

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Publication number
EP0108013B1
EP0108013B1 EP83402048A EP83402048A EP0108013B1 EP 0108013 B1 EP0108013 B1 EP 0108013B1 EP 83402048 A EP83402048 A EP 83402048A EP 83402048 A EP83402048 A EP 83402048A EP 0108013 B1 EP0108013 B1 EP 0108013B1
Authority
EP
European Patent Office
Prior art keywords
projectile
detonator
pin
tube
striker
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.)
Expired
Application number
EP83402048A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0108013A1 (fr
Inventor
Julien Foucou
Paul Perroud
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to AT83402048T priority Critical patent/ATE28705T1/de
Publication of EP0108013A1 publication Critical patent/EP0108013A1/fr
Application granted granted Critical
Publication of EP0108013B1 publication Critical patent/EP0108013B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F7/00—Devices affording protection against snow, sand drifts, side-wind effects, snowslides, avalanches or falling rocks; Anti-dazzle arrangements ; Sight-screens for roads, e.g. to mask accident site
    • E01F7/04—Devices affording protection against snowslides, avalanches or falling rocks, e.g. avalanche preventing structures, galleries
    • 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
    • F42B10/12—Stabilising arrangements using fins longitudinally-slidable with respect to the projectile or missile
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C1/00—Impact fuzes, i.e. fuzes actuated only by ammunition impact
    • F42C1/02—Impact fuzes, i.e. fuzes actuated only by ammunition impact with firing-pin structurally combined with fuze
    • F42C1/04—Impact fuzes, i.e. fuzes actuated only by ammunition impact with firing-pin structurally combined with fuze operating by inertia of members on impact
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
    • F42C15/34—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by a blocking-member in the pyrotechnic or explosive train between primer and main charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D3/00—Particular applications of blasting techniques

Definitions

  • the head 1 can be considered as a projectile body, the part 4 as a piece of link and the assembly 3, 5 as a movable tail.
  • the striker 7 on the head 1 a detonator on the collar 6 and the energy of the detonation is transmitted to a pyrotechnic chain.
  • the projectile described in this document is intended to be mounted on a rifle and there is no launch tube comparable to that of the present invention.
  • Security is provided by fingers cooperating with grooves to orient these parts relative to each other, the pyrotechnic chain being aligned only when the flange 6 strikes the striker 7.
  • Document CH-A-369 158 describes an avalanche triggering device which is in the form of a rifle grenade.
  • This projectile consists of a propellant tube 37 surmounted by a body 30 containing the explosive charge 40, 40 'and a warhead 31 containing the ignition system and various safety devices.
  • the latter consist of a closure cover 34, a socket 52 which, when fired, engages under another socket 53 and a pin 56.
  • Figures 17 to 24 illustrate another safety system.
  • the projectile object of the invention bearing the general reference 1
  • the assembly is arranged vertically inside a helicopter and the launcher tube 2 is closed at its lower part by a hatch 6 which can be opened by a mechanism 8 on board the helicopter.
  • the projectile 1 essentially consists of a projectile body 10 to inside which is an explosive charge 12, for example a self-sterilizing liquid such as "Nitroroc 8 8 48 •.
  • a connecting piece 14, disposed at the upper part of the projectile body 10, is made integral with the latter, for example by screwing, while a tail 16 is movable in translation along the piece 14.
  • the connecting piece 14 has the shape of a hollow cylinder containing at its upper part a detonator 18, while a detonating cord 20, also placed inside the connecting piece 14, has one end 21 placed in the vicinity of the detonator 18 and its other end (not shown) inside the explosive charge 12.
  • the tail 16 essentially consists of a hollow cylindrical body 24 whose inside diameter is slightly greater than the outside diameter of the connecting piece 14 so that you can slide on it.
  • Another security consists of an ejectable pin 34 which passes through the tail unit 24 right through and is, in the transport position illustrated in FIG. 2, above the connecting piece 14, thus preventing any movement of the empennage along the latter.
  • a transport pin 40 is provided connected to the pin 34 This pin 40 is introduced into the pin 34 at a point situated outside the tail body 24 and diametrically opposite to the fulcrum of the spring 36. The pin 40 is removed by hand just before the projectile is released .
  • a switch has been provided which essentially consists of an interrupt block 44 placed inside the connection 14 between the detonator 18 and the detonating cord 20.
  • This block 44 constitutes a barrier which prevents the shock wave from propagating to the detonating cord.
  • the block 44 is integral with an ejection rod 46 on which is fixed one end of a spring 48 whose other end is fixed to a support pad 50: the role of the spring 48 is to cause the ejection of block 44 at the time of impact.
  • the tail body 24 has a window 52 at this location, the lower part 53 of which has dimensions such that only the ejection rod 46 can pass through the wall of the tail body, thus preventing the ejection of the block 44 when the machine is in the transport position.
  • the large upper part of the window 52 comes opposite the block 44. The latter is then, relative to the window , in position 44a and it is ejected under the action of spring 48.
  • a positioning screw 54 which plays several roles. First of all, it provides the connection between the tail body 24 and the connecting piece 14. On the other hand, it serves to block the detonating cord 20 inside the latter, and finally, thanks to a longitudinal slot 55 formed in the tail body 24, it allows the guide thereof during its movement along the connecting piece.
  • the upper part of the window 52 passes in front of the interrupt block 44 and the spring 48 allows the ejection thereof.
  • the translational movement of the tail unit 16 along the part 14 is guided by the slot 55 which moves in front of the screw 54.
  • the inertia of the tail unit 16 is sufficient to overcome the action of the spring 29, and the striker 28 strikes the primer 32 of the detonator 18.
  • the switch 44 has been ejected beforehand, the energy of the explosion is transmitted to the charge 12 via the detonating cord 20.
  • the projectile object of the invention has particularly interesting advantages since it can be dropped anywhere from a helicopter, and in particular in places inaccessible to men. In addition, it is simple and easy to implement and of safe operation since it is equipped with a large number of safety devices. Finally, it is possible to embark several projectiles and several launching tubes of this kind on board a single helicopter in order to cause several avalanches at locations distant from each other during the same flight.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Toys (AREA)
EP83402048A 1982-10-26 1983-10-21 Dispositif et projectile déclencheurs d'avalanches Expired EP0108013B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83402048T ATE28705T1 (de) 1982-10-26 1983-10-21 Geraet und geschoss zum ausloesen von lawinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8217902 1982-10-26
FR8217902A FR2535045A1 (fr) 1982-10-26 1982-10-26 Projectile declencheur d'avalanches

Publications (2)

Publication Number Publication Date
EP0108013A1 EP0108013A1 (fr) 1984-05-09
EP0108013B1 true EP0108013B1 (fr) 1987-07-29

Family

ID=9278605

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83402048A Expired EP0108013B1 (fr) 1982-10-26 1983-10-21 Dispositif et projectile déclencheurs d'avalanches

Country Status (3)

Country Link
EP (1) EP0108013B1 (enrdf_load_stackoverflow)
AT (1) ATE28705T1 (enrdf_load_stackoverflow)
FR (1) FR2535045A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009037705B4 (de) * 2009-08-18 2014-03-27 Geräte- und Vorrichtungsbau Spitzner OHG Verfahren und Vorrichtung zum Auslösen von Lawinenabgängen

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH675023A5 (enrdf_load_stackoverflow) * 1988-01-12 1990-08-15 Zermatt Air Ag
FR2682137A1 (fr) * 1991-10-08 1993-04-09 Berthelon Bernard Procede et dispositif pour declencher les avalanches.
ES2178697T3 (es) * 1996-03-26 2003-01-01 Innova Patent Gmbh Dispositivo para provocar un alud o similar.
IT1311085B1 (it) * 1999-03-11 2002-02-28 Monterosa S P A Dispositivo e procedimento per provocare artificialmente una valanga
FR2964732B1 (fr) * 2010-09-14 2013-06-14 Alp Artifices Projectile pour declenchement d'avalanche
FR3001536A1 (fr) * 2013-01-28 2014-08-01 Luca Joel De Percussion differee d'une charge explosive de courte portee
EP3076122B1 (de) * 2015-04-01 2018-10-24 Inauen-Schätti AG System zum auslösen von lawinen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH369158A (de) * 1957-03-07 1963-05-15 Alfred Dipl Ing Messerli Verfahren zum Beschuss von Lawinenhängen und Einrichtung zur Ausübung desselben
DE2634985A1 (de) * 1976-08-04 1978-02-09 Alois Schneider Vorrichtung zum abtrennen von schnee- und/oder eisueberhaengen o.dgl. im gebirge
BE885618R (fr) * 1979-11-30 1981-04-10 Herstal Sa Projectile telescopique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009037705B4 (de) * 2009-08-18 2014-03-27 Geräte- und Vorrichtungsbau Spitzner OHG Verfahren und Vorrichtung zum Auslösen von Lawinenabgängen

Also Published As

Publication number Publication date
FR2535045A1 (fr) 1984-04-27
ATE28705T1 (de) 1987-08-15
FR2535045B1 (enrdf_load_stackoverflow) 1985-01-18
EP0108013A1 (fr) 1984-05-09

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