EP2251632A1 - Rückstossbremsanordnung für Feuerwaffen - Google Patents

Rückstossbremsanordnung für Feuerwaffen Download PDF

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Publication number
EP2251632A1
EP2251632A1 EP10290253A EP10290253A EP2251632A1 EP 2251632 A1 EP2251632 A1 EP 2251632A1 EP 10290253 A EP10290253 A EP 10290253A EP 10290253 A EP10290253 A EP 10290253A EP 2251632 A1 EP2251632 A1 EP 2251632A1
Authority
EP
European Patent Office
Prior art keywords
brake
chamber
weapon
firing
valve
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
EP10290253A
Other languages
English (en)
French (fr)
Other versions
EP2251632B1 (de
Inventor
Jean-François Cazalieres
François-Xavier Renard
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.)
Nexter Systems SA
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
Publication of EP2251632A1 publication Critical patent/EP2251632A1/de
Application granted granted Critical
Publication of EP2251632B1 publication Critical patent/EP2251632B1/de
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
    • F41A25/00—Gun mountings permitting recoil or return to battery, e.g. gun cradles; Barrel buffers or brakes
    • F41A25/02—Fluid-operated systems
    • F41A25/04—Fluid-operated systems adjustable, e.g. in relation to the elevation of the gun
    • 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
    • F41A25/00—Gun mountings permitting recoil or return to battery, e.g. gun cradles; Barrel buffers or brakes
    • F41A25/16—Hybrid systems
    • F41A25/20—Hydropneumatic systems

Definitions

  • the technical sector of the present invention is that of firing brakes canons or mortars to reduce the decline.
  • the object of the present invention is to provide a device that modulates the operation of a firing brake itself according to the conditions of use of the weapon.
  • the subject of the invention is therefore a firing brake assembly for weapons of the type comprising a firing brake itself and means for modulating the operation of said firing brake, characterized in that the modulating means is in the form of a firing brake.
  • the actual brake comprises a free piston delimiting a chamber in communication with the downstream circuit.
  • the upstream circuit comprises a valve for adjusting the pressure.
  • the upstream circuit communicates with the inside of the tube using a calibrated orifice.
  • the downstream circuit comprises at least one fluid flow control valve circulating in this downstream circuit.
  • the fire control valves are constituted by a valve for adjusting the flow rate as a function of the temperature, a valve for adjusting the desired recoil profile for the weapon and a control valve according to the type of ammunition.
  • the modulation means is made collinearly to the barrel of the weapon.
  • the brake itself is mounted parallel to the tube of the weapon
  • the brake itself is mounted collinearly to the barrel of the weapon.
  • a first advantage of the present invention lies in the possibility of modifying the operating conditions of the firing brake.
  • Another advantage lies in the hardening (thus the shortening) of the recoil phase of the weapon.
  • the firing brake assembly comprising a firing brake 1 properly attached to the tube 2 of a weapon and a modulating means 3 is shown in section.
  • the firing brake 1 is conventional in its implementation and it may be noted that it comprises a casing 4 enclosing a fluid and fixed to the frame 11 partially shown the weapon.
  • a rolling piston 5 sliding in the casing is fixed rigidly to the tube 2 of the weapon.
  • This piston defines an upstream chamber 6 and a downstream chamber 7.
  • the modulation means 3 is in the form of a chamber 14 provided with a free piston 15 delimiting an upstream chamber 22 and a downstream chamber 23, a stop 16 being fixed in the casing in order to limit the translation of the piston 15 forward.
  • the upstream chamber 22 is placed in communication with the tube 2 of the weapon via an upstream circuit 13 taking part of the combustion gases from the propellant charge of the munition 21 via a calibrated orifice. 16.
  • a valve 17 is interposed in the upstream circuit 13 in order to regulate the level of pressure in the chamber 22.
  • the downstream chamber 23 is filled with fluid, for example oil, and is placed in communication with the brake. firing 1 with a downstream circuit 12 also having firing adjustment valves 18, 19 and 20.
  • the valve 18 is for example a valve for adjusting the oil flow as a function of the outside temperature
  • the valve 19 is dedicated to adjusting the profile of the recoil of the weapon
  • the valve 20 provides adjustment depending on the type of ammunition.
  • the actual brake 1 comprises, in the downstream chamber 7, a free piston 8 delimiting a chamber 9 in communication with the downstream circuit 12.
  • the operation of the brake assembly according to the invention is as follows. During the initiation of the propellant charge, part of the combustion gases is withdrawn by the upstream circuit 13 and fills the chamber 22. These pressurized gases are used as the driving means to ensure the movement of the piston 15. During the increase in pressure, the piston 15 compresses the fluid of the downstream chamber 23 in order to modulate the operation of the firing brake 1 proper by transfer of the fluid to the chamber 9. This displacement of the fluid causes the displacement of the piston. 8 and consequently a decrease in the volume of the chamber 7. The pressure then increases in the downstream chamber 7 which has the effect of hardening the recoil phase of the piston 5 of the brake and thus reduce the distance of the recoil.
  • the modulation means 3 therefore constitutes a means of modifying the Braking characteristics of the brake itself 1.
  • the modulation can occur by acting simultaneously or individually on each of the valves.
  • it reduces the passage of the gas according to the pointing of the weapon.
  • the opening of the valve 17 increases the pressure exerted by the gas on the piston 15. Practically, it will seek to reduce the recoil during high angle of elevation pointing. Valve 17 will therefore be further opened for high angle of elevation pointing.
  • the passage of the oil is reduced as a function of the temperature, which makes it possible to take into account the changes in the viscosity of the oil which are related to the temperature. Concretely, the higher the temperature will be higher the more we close this valve 18 because the oil will be more fluid.
  • the passage of the oil is reduced as a function of the desired recoil profile (which makes it possible to modify to a certain extent the recoil time). The more this valve 19 is open, the more the action of the means 3 will be important so more the recoil time will be reduced.
  • valve 17 if the valve 17 is closed and all the valves 18 to 20 are open, the operation of the brake is normal fire brake operation.
  • the passage of the oil can be reduced depending on the type of ammunition used, and therefore on the firing pulse that the latter causes.
  • This valve may include different preset opening positions for the different ammunition used. Concretely, the more the recoil pulse will be strong plus the valve 20 will be open to increase the action of the means 3.
  • valves 18, 19 and 20 make it possible to refine the adjustment parameters as much as possible.
  • the order of the valves on line 12 does not matter.
  • the figure 1 shows a conventional arrangement of a firing brake 1 according to which this brake is placed parallel to the tube 2 of the weapon. This is a parallel assembly that need not be described in more detail.
  • FIG. 2 there is shown an alternative embodiment of the assembly wherein the actual brake 1 is mounted coaxially with the tube 2 of the weapon.
  • identical or similar elements of the actual brake 1 are designated by the same references.
  • This brake 1 is of course fixed rigidly to the frame 11 of the weapon .
  • the piston 5 is fixed rigidly to the tube 2 of the weapon and defines in the casing 4 the chambers 6 and 7.
  • the free piston 8 is disposed in the vicinity of the frame 11 and defines the chamber 9.
  • the latter slides relative to the casing 4.
  • the piston 5 connected to the tube compresses the chamber 7 and the transfer of oil ensuring braking is effected between the chambers 6 and 7.
  • the addition of the modulation means 3 introduces a variation of the fluid pressure in the chamber 9 and therefore an increase in the pressure in the chamber 7 by displacement of the free piston 8 as previously explained. This results in a modification of the braking characteristics of the brake 3.
  • the advantage of such a structure lies in the volume gain of the brake assembly proper and modulator and provides a greater compactness.
  • This embodiment also makes it possible to make collinear fire efforts to the braking forces. This increases the efficiency of the brake.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Braking Arrangements (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Braking Systems And Boosters (AREA)
EP10290253A 2009-05-13 2010-05-11 Rückstossbremsanordnung für Feuerwaffen Active EP2251632B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0902293A FR2945617B1 (fr) 2009-05-13 2009-05-13 Ensemble de frein de tir pour armes

Publications (2)

Publication Number Publication Date
EP2251632A1 true EP2251632A1 (de) 2010-11-17
EP2251632B1 EP2251632B1 (de) 2012-03-21

Family

ID=41360277

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10290253A Active EP2251632B1 (de) 2009-05-13 2010-05-11 Rückstossbremsanordnung für Feuerwaffen

Country Status (5)

Country Link
US (1) US8056464B2 (de)
EP (1) EP2251632B1 (de)
AT (1) ATE550620T1 (de)
ES (1) ES2384547T3 (de)
FR (1) FR2945617B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020000838B4 (de) 2020-02-08 2022-12-15 Bundesrepublik Deutschland, vertr. durch das Bundesministerium der Verteidigung, vertr. durch das Bundesamt für Ausrüstung, Informationstechnik und Nutzung der Bundeswehr Laufbettungssystem für eine Rohrwaffe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2066319A (en) * 1934-01-05 1937-01-05 Gladeon M Barnes Gun
US4648306A (en) * 1983-01-22 1987-03-10 Rheinmetall Gmbh Counter recoil mechanism, preferably for an artillery weapon
USH1010H (en) * 1991-07-15 1992-01-07 The United States Of America As Represented By The Secretary Of The Army Recoil mechanisms
FR2789760A1 (fr) 1999-02-16 2000-08-18 Tda Armements Sas Dispositif anti-recul avec frein, compensateur du frein et recuperateur
FR2869406A1 (fr) 2004-04-26 2005-10-28 Giat Ind Sa Frein de tir
DE102006014155A1 (de) * 2006-03-24 2007-09-27 Rheinmetall Waffe Munition Gmbh Hydropneumatisches Brems- und Vorholsystem für Rohrrücklaufgeschütze

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US749215A (en) * 1904-01-12 Means for controlling the recoil of guns
US1469918A (en) * 1923-02-06 1923-10-09 Maine Ernest M De Recoil-controlling device
US1877118A (en) * 1930-12-10 1932-09-13 Gladeon M Barnes Gun
US1845218A (en) * 1930-12-10 1932-02-16 Gladeon M Barnes Gun
US6227098B1 (en) * 1998-08-20 2001-05-08 James D. Mason Recoil attenuator
GB0601338D0 (en) * 2006-01-24 2006-03-01 Rycote Microphone Windshields Improved suspension device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2066319A (en) * 1934-01-05 1937-01-05 Gladeon M Barnes Gun
US4648306A (en) * 1983-01-22 1987-03-10 Rheinmetall Gmbh Counter recoil mechanism, preferably for an artillery weapon
USH1010H (en) * 1991-07-15 1992-01-07 The United States Of America As Represented By The Secretary Of The Army Recoil mechanisms
FR2789760A1 (fr) 1999-02-16 2000-08-18 Tda Armements Sas Dispositif anti-recul avec frein, compensateur du frein et recuperateur
FR2869406A1 (fr) 2004-04-26 2005-10-28 Giat Ind Sa Frein de tir
DE102006014155A1 (de) * 2006-03-24 2007-09-27 Rheinmetall Waffe Munition Gmbh Hydropneumatisches Brems- und Vorholsystem für Rohrrücklaufgeschütze

Also Published As

Publication number Publication date
ATE550620T1 (de) 2012-04-15
ES2384547T3 (es) 2012-07-06
EP2251632B1 (de) 2012-03-21
FR2945617A1 (fr) 2010-11-19
US8056464B2 (en) 2011-11-15
US20100288118A1 (en) 2010-11-18
FR2945617B1 (fr) 2011-06-17

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