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EP0108013A1 - Gerät und Geschoss zum Auslösen von Lawinen - Google Patents

Gerät und Geschoss zum Auslösen von Lawinen Download PDF

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Publication number
EP0108013A1
EP0108013A1 EP83402048A EP83402048A EP0108013A1 EP 0108013 A1 EP0108013 A1 EP 0108013A1 EP 83402048 A EP83402048 A EP 83402048A EP 83402048 A EP83402048 A EP 83402048A EP 0108013 A1 EP0108013 A1 EP 0108013A1
Authority
EP
European Patent Office
Prior art keywords
projectile
detonator
pin
tail
connecting piece
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
EP83402048A
Other languages
English (en)
French (fr)
Other versions
EP0108013B1 (de
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/de
Application granted granted Critical
Publication of EP0108013B1 publication Critical patent/EP0108013B1/de
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 present invention relates to an avalanche triggering projectile, and more particularly a projectile which can be dropped from a helicopter.
  • the object of the present invention is precisely to remedy this drawback thanks to an avalanche triggering projectile which can be dropped from a helicopter, and therefore cause an avalanche in any place, even inaccessible to men.
  • this projectile is equipped with a detonating cord, one end of which is placed in the connecting piece in the vicinity of the detonator and at least part of which is in the explosive charge.
  • the projectile is of course equipped with a number of safety devices intended to prevent an accidental explosion.
  • it comprises an ejectable pin arranged so as to prevent any movement of the tail in the direction of the projectile body, this pin being able to be ejected under the action of a spring.
  • a transport pin can be provided connected to said ejectable pin in order to prevent the ejection of the latter.
  • the projectile may include a switch, at least part of which is located in the connecting part between the detonator and the body of the projectile; in this case, the stabilizer comprises a window that can come opposite said part of the switch in order to allow the ejection of the latter during impact.
  • a positioning screw screwed into the connecting piece and the tail has a slot allowing its guidance by this screw during its movement along the connecting piece at the time of impact.
  • 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 inside which is an explosive charge 12 , for example a self-sterilizable liquid such as "Nitroroc S 8 48 * .
  • a connecting piece 14, arranged 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 part 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 charge explosive 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 in order to be able to slide thereon.
  • a striker 28 is fixed to a plate 30 which closes the tail body 24 at its upper part.
  • the tail 16 slides along the connecting piece 14 and the fins 26 come to a position 26a shown diagrammatically in phantom in the figure.
  • the role of the fins 26 is only to ensure the stabilization in flight of the projectile.
  • the striker 28 strikes the primer 32 of the detonator 18 and the energy of the explosion is transmitted to the charge 12 via the detonating cord 20. It is obvious that a more or less significant part of the latter must be inside charge 12 and in contact with it to ensure proper transmission of the explosion.
  • 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 located 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, the other end of which is fixed to a support pad 50: the role of the spring 48 is to cause the block 44 to be ejected 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 first operation consists in placing the body 10 of the projectile alone inside the tube 2.
  • a positioning rod 7 is, during this operation, in the locking position shown on the FIG. 3a thus preventing the projectile body 10 from going down to the hatch 6.
  • the location of the positioning rod 7 is such that the upper part of the body 10 is located in the vicinity of the upper part of the launching tube 2.
  • the hatch 6 located in the lower part tube is closed and will only be opened when dropped. It is when the projectile body is in the position illustrated in FIG. 3a that it is filled with the explosive charge. Meanwhile, we prepare separately the assembly consisting of the tail and the connecting piece. During this operation, the detonating cord 20 is placed in the housing provided in part 14.
  • the upper part of the window 52 passes in front of the interrupt block 44 and the spring 48 allows the ejection thereof.
  • the trans movement lation of the empennage 16 along the part 14 is guided by the slot 55 which moves in front of the screw 54.
  • the inertia of the empennage 16 is sufficient to overcome the action of the spring 29, and the striker 28 comes strike 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. Finally, it is understood that the invention is not limited to the single embodiment which has just been described, but that it is possible to envisage variants without thereby departing from the scope of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Toys (AREA)
EP83402048A 1982-10-26 1983-10-21 Gerät und Geschoss zum Auslösen von Lawinen Expired EP0108013B1 (de)

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
FR8217902A FR2535045A1 (fr) 1982-10-26 1982-10-26 Projectile declencheur d'avalanches
FR8217902 1982-10-26

Publications (2)

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

Family

ID=9278605

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83402048A Expired EP0108013B1 (de) 1982-10-26 1983-10-21 Gerät und Geschoss zum Auslösen von Lawinen

Country Status (3)

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

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324723A2 (de) * 1988-01-12 1989-07-19 Air-Zermatt Ag Verfahren zum Auslösen von Lawinen und Einrichtung zur Durchführung des Verfahrens
FR2682137A1 (fr) * 1991-10-08 1993-04-09 Berthelon Bernard Procede et dispositif pour declencher les avalanches.
EP0798536A3 (de) * 1996-03-26 1999-03-03 KONRAD DOPPELMAYR & SOHN MASCHINENFABRIK GESELLSCHAFT M.B.H. & CO. KG. Einrichtung zum Auslösen einer Lawine od. dgl.
EP1035402A3 (de) * 1999-03-11 2001-02-28 Monterosa S.p.A. Einrichtung und Verfahren zum künstlichen Auslösen von Lawinen
EP2287559A2 (de) 2009-08-18 2011-02-23 Geräte- und Vorrichtungsbau Spitzner OHG Verfahren und Vorrichtung zum Auslösen von Lawinenabgängen
FR2964732A1 (fr) * 2010-09-14 2012-03-16 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
EP3076122A1 (de) * 2015-04-01 2016-10-05 Inauen-Schätti AG System zum auslösen von lawinen

Citations (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
EP0030052A1 (de) * 1979-11-30 1981-06-10 FABRIQUE NATIONALE HERSTAL en abrégé FN Société Anonyme Teleskopierbares Geschoss

Patent Citations (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
EP0030052A1 (de) * 1979-11-30 1981-06-10 FABRIQUE NATIONALE HERSTAL en abrégé FN Société Anonyme Teleskopierbares Geschoss

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324723A2 (de) * 1988-01-12 1989-07-19 Air-Zermatt Ag Verfahren zum Auslösen von Lawinen und Einrichtung zur Durchführung des Verfahrens
EP0324723A3 (de) * 1988-01-12 1990-11-28 Air-Zermatt Ag Verfahren zum Auslösen von Lawinen und Einrichtung zur Durchführung des Verfahrens
FR2682137A1 (fr) * 1991-10-08 1993-04-09 Berthelon Bernard Procede et dispositif pour declencher les avalanches.
EP0798536A3 (de) * 1996-03-26 1999-03-03 KONRAD DOPPELMAYR & SOHN MASCHINENFABRIK GESELLSCHAFT M.B.H. & CO. KG. Einrichtung zum Auslösen einer Lawine od. dgl.
EP1035402A3 (de) * 1999-03-11 2001-02-28 Monterosa S.p.A. Einrichtung und Verfahren zum künstlichen Auslösen von Lawinen
EP2287559A2 (de) 2009-08-18 2011-02-23 Geräte- und Vorrichtungsbau Spitzner OHG Verfahren und Vorrichtung zum Auslösen von Lawinenabgängen
DE102009037705A1 (de) 2009-08-18 2011-03-03 Geräte- und Vorrichtungsbau Spitzner OHG Verfahren und Vorrichtung zum Auslösen von Lawinenabgängen
FR2964732A1 (fr) * 2010-09-14 2012-03-16 Alp Artifices Projectile pour declenchement d'avalanche
WO2012035215A1 (fr) * 2010-09-14 2012-03-22 Alp'artifices Projectile pour déclenchement d'avalanche
FR3001536A1 (fr) * 2013-01-28 2014-08-01 Luca Joel De Percussion differee d'une charge explosive de courte portee
EP3076122A1 (de) * 2015-04-01 2016-10-05 Inauen-Schätti AG System zum auslösen von lawinen

Also Published As

Publication number Publication date
EP0108013B1 (de) 1987-07-29
FR2535045B1 (de) 1985-01-18
FR2535045A1 (fr) 1984-04-27
ATE28705T1 (de) 1987-08-15

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