EP4027098B1 - Dispositif de contrôle de la mise à poste d'un projectile dans le tube d'une arme et procédé de contrôle mettant en oeuvre un tel dispositif - Google Patents

Dispositif de contrôle de la mise à poste d'un projectile dans le tube d'une arme et procédé de contrôle mettant en oeuvre un tel dispositif Download PDF

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Publication number
EP4027098B1
EP4027098B1 EP21213113.0A EP21213113A EP4027098B1 EP 4027098 B1 EP4027098 B1 EP 4027098B1 EP 21213113 A EP21213113 A EP 21213113A EP 4027098 B1 EP4027098 B1 EP 4027098B1
Authority
EP
European Patent Office
Prior art keywords
projectile
sensor
weapon
tube
echo
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.)
Active
Application number
EP21213113.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP4027098A1 (fr
Inventor
Steve BAERT
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.)
Knds France
Original Assignee
Nexter Systems SA
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 Nexter Systems SA filed Critical Nexter Systems SA
Priority to RS20231234A priority Critical patent/RS65008B1/sr
Publication of EP4027098A1 publication Critical patent/EP4027098A1/fr
Application granted granted Critical
Publication of EP4027098B1 publication Critical patent/EP4027098B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/53—Charged-condition indicators, i.e. indicating the presence of a cartridge in the cartridge chamber
    • 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
    • F41A17/00—Safety arrangements, e.g. safeties
    • F41A17/14—Double-loading prevention
    • 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
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/37—Feeding two or more kinds of ammunition to the same gun; Feeding from two sides
    • F41A9/375—Feeding propellant charges and projectiles as separate units

Definitions

  • the technical field of the invention is that of devices making it possible to control the placement of a projectile in the barrel of a weapon.
  • the projectile When loading, the projectile is first introduced into a chamber of the weapon and pushed to a so-called forcing cone which is an area where the diameter of the chamber is reduced to the diameter of the tube. The projectile is pushed until it is stuck at the level of the forcing cone by its belt or a rim of its body and it then seals the weapon tube at this area.
  • the device as described by this patent does not, however, detect whether the projectile is correctly loaded, that is to say correctly stuck or hooked in the forcing cone of the weapon.
  • the invention proposes to resolve this security problem by ensuring quality control of the positioning of the projectile in the forcing cone of the weapon.
  • the subject of the invention is thus a device for controlling the placement of a projectile in a tube of a weapon comprising a forcing cone intended to radially trap a projectile, device comprising at least one sensor intended to be placed in position placed against the tube of the weapon, sensor connected to a computer intended for processing a signal coming from the sensor(s), device characterized in that the sensor comprises a set of piezoelectric elements generating ultrasonic waves, sensor intended to be arranged so as to diffuse at least one ultrasonic wave front which is directed radially towards the longitudinal axis of the weapon and which is centered longitudinally facing the forcing cone, the sensor being chosen such that the wave front can extend inside the weapon tube over a width greater than the width of the forcing cone, the sensor also being able to receive at minus a reflection echo of the emitted wavefront and to transmit this echo in the form of an electrical signal to the computer.
  • the device comprises at least two sensors each oriented in radial directions to the weapon tube and which are perpendicular to each other.
  • the process can be activated following information about projectile placement.
  • the process can be deactivated after the shot, thus making it possible to verify that the projectile has left, or after unloading the projectile.
  • a device 1 for securing the loading of a weapon is fixed to a weapon tube 10 of a caliber greater than 75 mm.
  • the weapon tube 10 comprises a bore 11 which is separated into two parts, on the one hand a chamber 12 intended to receive a projectile 100 and a propellant charge 101 and on the other hand a rifled part 13 intended to impart a gyroscopic movement to the projectile 100 fired by this tube 10.
  • the chamber 12 has an internal diameter D2 greater than the internal diameter D1 of the striped part 13.
  • the progressive connection of the two diameters D1 and D2 between the chamber 12 and the striped part 13 takes place in a zone called forcing cone 14.
  • This forcing cone 14 allows a belt 102 of the projectile 100, located between a base 103 and a warhead 104, to ensure sealing against the propellant gases coming from the initiation of the charge 101.
  • the belt 102 consists for example of a malleable metal alloy capable of conforming by creep to the profile of the tube, in particular by occupying the stripes of the striped part 13.
  • the projectile may include one or more beads having satisfactory dimensional and material characteristics to ensure a seal between the forcing cone and the projectile 100.
  • the device 1 comprises at least one sensor 2 of a particular type, called an electro-magneto-acoustic sensor, as described below.
  • This type of sensor which is commercially available is capable of initially emitting an ultrasonic wave front 20 (arrows at the figure 2 ) in a support (here the weapon tube) on which it is fixed. Secondly, it can receive and transform the waves reflected in echo 21 by the support into an electrical signal which can be analyzed by processing electronics (such as a calculator 200). It comprises a set of piezoelectric elements 2b (generally several dozen) which are capable of generating ultrasonic waves 20 when they are controlled by an electrical signal and which can also conversely generate another electrical signal following their request by incident ultrasonic waves.
  • the senor 2 is fixed on the tube 10 facing the forcing cone 14.
  • the area of the tube 10 in which the wave fronts 20 and echo fronts 21 move is shown figures 1 And 2 by a gray area 2c.
  • the sensor 2 is arranged in such a way that the waves 20 that it generates travel radially through the material of the tube 10 and that of the belt 102 if a projectile 100 is placed in position, that is to say stuck in the forcing cone 14 .
  • the sensor 2 is electrically connected to a computer 200 to which it transmits a signal representative of the echo 21 perceived by the sensor.
  • the calculator 200 is able to interpret the nature of the echoes collected by the sensor 2.
  • the calculator 200 thus compares the echo received with reference echoes which have been determined by experiment. It is then possible to provide a user with information regarding the conformity of the posting. via an interface (interface not shown), such as a screen or indicator lights.
  • the positioning will be compliant if the seal is satisfactory (no air gap or presence of an air gap whose thickness is below a predefined threshold).
  • Device 1 will ensure continuous monitoring of the state of the station. This monitoring will start with information about the positioning of the projectile 100, given for example by a firing control of the weapon or by the system controlling the loading of the projectile.
  • the detection of a non-compliant positioning may also, in addition to the display of the non-compliance information, order the prohibition of firing.
  • the sensor 2 will be chosen so that the wave fronts 20 that it emits and the echoes 21 that it receives cover an area of width L1 greater than the width L2 of the forcing cone 14 and up to twice the width L2 of cone 14.
  • This extended coverage makes it possible to take into account the dispersion of longitudinal positioning of the projectile 100 in the tube 10.
  • This dispersion can come from wear of the forcing cone 14, from a variation in the force of placing the projectile 100 into position. or dimensional variations of the belt 102.
  • sensors 2 oriented in radial directions to the tube 10 of the weapon and which are perpendicular to each other and perpendicular to the longitudinal axis X of the tube 10.
  • the signals from the two sensors will be combined at the level of the computer 200, the correct positioning being confirmed only if the two sensors provide correct positioning information.
  • the device according to the invention is non-intrusive with respect to the weapon since the sensors are placed against the tube 10 without any machining being necessary.
  • the invention therefore allows adaptation to existing equipment without major modifications.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
EP21213113.0A 2021-01-11 2021-12-08 Dispositif de contrôle de la mise à poste d'un projectile dans le tube d'une arme et procédé de contrôle mettant en oeuvre un tel dispositif Active EP4027098B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RS20231234A RS65008B1 (sr) 2021-01-11 2021-12-08 Uređaj za kontrolisanje pozicioniranja projektila u cevi oružja i postupak kontrolisanja primenom takvog uređaja

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2100161A FR3118801B1 (fr) 2021-01-11 2021-01-11 Dispositif de contrôle de la mise a poste d'un projectile dans le tube d'une arme et procédé de contrôle mettant en oeuvre un tel dispositif.

Publications (2)

Publication Number Publication Date
EP4027098A1 EP4027098A1 (fr) 2022-07-13
EP4027098B1 true EP4027098B1 (fr) 2023-09-27

Family

ID=76522993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21213113.0A Active EP4027098B1 (fr) 2021-01-11 2021-12-08 Dispositif de contrôle de la mise à poste d'un projectile dans le tube d'une arme et procédé de contrôle mettant en oeuvre un tel dispositif

Country Status (5)

Country Link
EP (1) EP4027098B1 (fi)
FI (1) FI4027098T3 (fi)
FR (1) FR3118801B1 (fi)
PL (1) PL4027098T3 (fi)
RS (1) RS65008B1 (fi)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19638572C2 (de) * 1996-09-20 2002-12-12 Rheinmetall W & M Gmbh Vorrichtung zur Überwachung des Ladezustandes einer Vorderladerwaffe
DE19737078A1 (de) 1997-08-26 1999-03-18 Rheinmetall Ind Ag Vorrichtung zur Überwachung des Ladezustandes einer Rohrwaffe
FI115159B (fi) * 2003-07-08 2005-03-15 Patria Vammas Oy Laitteisto irtopanosjärjestelmää käyttävän tykin lataustilan valvomiseksi
EP2894429B1 (en) * 2014-01-08 2018-08-15 Nostromo Holdings, LLC Mortar safety device

Also Published As

Publication number Publication date
RS65008B1 (sr) 2024-01-31
FR3118801B1 (fr) 2022-12-23
PL4027098T3 (pl) 2023-12-27
FR3118801A1 (fr) 2022-07-15
FI4027098T3 (fi) 2023-12-13
EP4027098A1 (fr) 2022-07-13

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