EP0918975A1 - Muzzle brake for weapon barrel - Google Patents

Muzzle brake for weapon barrel

Info

Publication number
EP0918975A1
EP0918975A1 EP98928369A EP98928369A EP0918975A1 EP 0918975 A1 EP0918975 A1 EP 0918975A1 EP 98928369 A EP98928369 A EP 98928369A EP 98928369 A EP98928369 A EP 98928369A EP 0918975 A1 EP0918975 A1 EP 0918975A1
Authority
EP
European Patent Office
Prior art keywords
brake
revolution
tube
muzzle
projectile
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
EP98928369A
Other languages
German (de)
French (fr)
Other versions
EP0918975B1 (en
Inventor
Francis Ledys
Jacques Bachelier
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.)
Giat Industries SA
Original Assignee
Giat Industries 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 Giat Industries SA filed Critical Giat Industries SA
Publication of EP0918975A1 publication Critical patent/EP0918975A1/en
Application granted granted Critical
Publication of EP0918975B1 publication Critical patent/EP0918975B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/32—Muzzle attachments or glands
    • F41A21/36—Muzzle attachments or glands for recoil reduction ; Stabilisators; Compensators, e.g. for muzzle climb prevention

Definitions

  • a muzzle brake generally comprises at least two transverse openings which make the interior of the brake communicate with at least two gas reception vanes, vanes integral with the exterior of the brake.
  • the propellant gases When firing a projectile, the propellant gases are guided by the gills towards the blades and they then exert a thrust on them which compensates for the recoil of the barrel of the weapon.
  • Patent US1363058 shows such a muzzle brake.
  • Muzzle brakes are commonly used in the field of field artillery, however their use is reduced for artillery equipping tanks or vehicles because of the disturbances they cause when firing arrow projectiles, or under calibrated sabot projectiles. detachable. Indeed the possible scratching of the tube and the aerodynamic forces which are exerted on such a projectile at the exit of the barrel of the weapon cause a beginning of separation of the shoe and the projectile inside the brake.
  • the muzzle brake according to the invention makes it possible (while retaining an excellent yield) to avoid any initial disturbance of the trajectory of the projectile as well as any deterioration of the internal surfaces of the brake.
  • the subject of the invention is a muzzle brake for a weapon tube, in particular of large caliber, and comprising at least two gills making the interior of the brake communicate with at least two gas receiving vanes which are integral with the exterior of the brake, brake having at least one cylindrical internal bearing to the caliber of the tube and arranged downstream of the gills in the direction of travel of a projectile fired by the tube, brake characterized in that the internal cylindrical bearing is separated from the or gills which precede it by a concave surface of revolution whose concavity is oriented towards the rear of the brake.
  • the surface of revolution is a conical surface.
  • the surface of revolution extends longitudinally over a length which is between 1.5 and 4 times the length of the cylindrical seat.
  • the maximum diameter of the surface of revolution is preferably between 108% and 112% of the gauge D of the tube.
  • the brake comprises at least two stages each consisting of at least two openings and at least two gas reception vanes, two consecutive stages being separated by a cylindrical surface preceded by a surface of revolution.
  • the muzzle brake 1 is here a brake which has a first stage la and a second stage lb.
  • Each stage includes two vents 2a, 2b and two gas reception vanes 3a, 3b.
  • the vents 2a, 2b communicate the interior of the brake 1 with the blades which are integral with the exterior of the brake.
  • the brake is fixed by thread to the end of a barrel 4 of a weapon, here a rifled tube whose caliber (or diameter at the bottom of stripes) is D.
  • the interior of the brake has two cylindrical surfaces 5a, 5b to the caliber of the tube.
  • a first scope 5a is disposed downstream of the first vents 2a in the direction of travel of a projectile fired by the tube.
  • a second bearing 5b is located downstream of the second vents 2b and opens out to the outside of the brake.
  • each range 5a or 5b is separated from the openings which precede it by a conical surface of revolution 6a or 6b, the concavity of which is oriented towards a rear part of the brake intended to be fixed to the weapon.
  • Each conical surface extends longitudinally over a length (La or Lb) which is between 60% and 80% of the length La + Pa or Lb + Pb of the blade in question (Pa and Pb being respectively the lengths of the cylindrical spans 5a and 5b).
  • the length La (or Lb) is between 1.5 and 4 times the length Pa (or Pb).
  • the maximum diameter ⁇ a or ⁇ b of the conical surface 6a, 6b is between 108% and 112% of the gauge D of the tube.
  • a maximum diameter ⁇ a or ⁇ b will be chosen such that the belt of an arrow projectile cannot come completely out of its housing on the shoe of the projectile.
  • the aerodynamic forces exerted on the projectile as well as the centrifugal force (due to scratches) have the effect of initiating an opening movement of the projectile shoe.
  • the gases are also exerted on the belt and have the effect of deviating it from the shoe.
  • the projectile belt is therefore subjected to an extension effort and it initiates an outward movement out of its hoof housing.
  • the belt is deformed opposite the latter.
  • the conical surfaces 6a and 6b will therefore in turn receive the contact of the projectile belt and they will guide the latter so as to reposition it in its housing of the shoe.
  • the cylindrical bearings 5a and 5b of the caliber of the weapon then ensure the guidance of the projectile which leaves the weapon without disturbance or obliquity.
  • each conical surface with a concave surface of revolution whose concavity will be oriented towards the rear of the brake.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Braking Arrangements (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

A muzzle brake for a large caliber gun barrel incorporating at least two vents making the inside of the brake communicate with at least two vanes, receiving the gases, that are integral with the outside of the brake. The brake has at least one internal cylindrical support of the same caliber as the barrel and placed downstream of the vents according to the direction of movement of a projectile fired from the barrel. The internal cylindrical support is separated from the vent or vents that precede it by a concave surface of revolution whose concavity is oriented towards the rear of the brake.

Description

FREIN DE BOUCHE POUR TUBE D'ARME MOUTH BRAKE FOR WEAPON TUBE
Le domaine technique de l'invention est celui des freins de bouche pour tubes d'armes, notamment de gros calibre. Un frein de bouche comporte généralement au moins deux ouïes transversales qui font communiquer 1 ' intérieur du frein avec au moins deux aubes de réception des gaz, aubes solidaires de l'extérieur du frein.The technical field of the invention is that of muzzle brakes for weapons tubes, in particular of large caliber. A muzzle brake generally comprises at least two transverse openings which make the interior of the brake communicate with at least two gas reception vanes, vanes integral with the exterior of the brake.
Lors du tir d'un projectile, les gaz propulsifs sont guidés par les ouïes vers les aubes et ils exercent alors une poussée sur celles ci qui vient compenser le recul du tube de 1 ' arme .When firing a projectile, the propellant gases are guided by the gills towards the blades and they then exert a thrust on them which compensates for the recoil of the barrel of the weapon.
Le brevet US1363058 montre un tel frein de bouche. Les freins de bouche sont couramment employés dans le domaine de l'artillerie de campagne, cependant leur emploi est réduit pour les artilleries équipant les chars ou véhicules en raison des perturbations qu'ils occasionnent au tir des projectiles flèches, ou projectiles sous calibrés à sabot détachable. En effet le rayage éventuel du tube et les efforts aérodynamiques qui s'exercent sur un tel projectile à la sortie du tube de l'arme provoquent un début de séparation du sabot et du projectile à l'intérieur du frein.Patent US1363058 shows such a muzzle brake. Muzzle brakes are commonly used in the field of field artillery, however their use is reduced for artillery equipping tanks or vehicles because of the disturbances they cause when firing arrow projectiles, or under calibrated sabot projectiles. detachable. Indeed the possible scratching of the tube and the aerodynamic forces which are exerted on such a projectile at the exit of the barrel of the weapon cause a beginning of separation of the shoe and the projectile inside the brake.
Une telle séparation détériore le frein et occasionne une obliquité du projectile ce qui perturbe gravement sa trajectoire et nuit à la précision du tir.Such separation deteriorates the brake and causes an obliquity of the projectile which seriously disrupts its trajectory and affects the accuracy of the shot.
Pour pallier un tel inconvénient on a cherché à augmenter le diamètre de passage du projectile dans le frein de bouche, mais un tel choix conduit à une forte diminution du rendement du frein ce qui accroît les efforts subis par le char ou le véhicule portant le tube.To overcome such a drawback, an attempt has been made to increase the diameter of passage of the projectile in the muzzle brake, but such a choice leads to a large reduction in the efficiency of the brake, which increases the forces undergone by the tank or the vehicle carrying the tube. .
C'est le but de l'invention de proposer un frein de bouche ne présentant pas de tels inconvénients.It is the object of the invention to provide a muzzle brake which does not have such drawbacks.
Ainsi le frein de bouche selon l'invention permet (tout en conservant un excellent rendement) d'éviter toute perturbation initiale de la trajectoire du projectile ainsi que toute détérioration des surfaces internes du frein. Ainsi l'invention a pour objet un frein de bouche pour un tube d'arme, notamment de gros calibre, et comportant au moins deux ouïes faisant communiquer l'intérieur du frein avec au moins deux aubes de réception des gaz qui sont solidaires de l'extérieur du frein, frein présentant au moins une portée intérieure cylindrique au calibre du tube et disposée en aval des ouïes dans le sens de parcours d'un projectile tiré par le tube, frein caractérisé en ce que la portée intérieure cylindrique est séparée de la ou des ouïes qui la précèdent par une surface de révolution concave dont la concavité est orientée vers l'arrière du frein.Thus the muzzle brake according to the invention makes it possible (while retaining an excellent yield) to avoid any initial disturbance of the trajectory of the projectile as well as any deterioration of the internal surfaces of the brake. Thus, the subject of the invention is a muzzle brake for a weapon tube, in particular of large caliber, and comprising at least two gills making the interior of the brake communicate with at least two gas receiving vanes which are integral with the exterior of the brake, brake having at least one cylindrical internal bearing to the caliber of the tube and arranged downstream of the gills in the direction of travel of a projectile fired by the tube, brake characterized in that the internal cylindrical bearing is separated from the or gills which precede it by a concave surface of revolution whose concavity is oriented towards the rear of the brake.
Selon un mode particulier de réalisation, la surface de révolution est une surface conique.According to a particular embodiment, the surface of revolution is a conical surface.
Avantageusement, la surface de révolution s'étend longitudinalement sur une longueur qui est comprise entre 1,5 et 4 fois la longueur de la portée cylindrique.Advantageously, the surface of revolution extends longitudinally over a length which is between 1.5 and 4 times the length of the cylindrical seat.
Le diamètre maximal de la surface de révolution est de préférence compris entre 108% et 112% du calibre D du tube.The maximum diameter of the surface of revolution is preferably between 108% and 112% of the gauge D of the tube.
Selon un mode particulier de réalisation, le frein comprend au moins deux étages constitués chacun par au moins deux ouïes et au moins deux aubes de réception des gaz, deux étages consécutifs étant séparés par une portée cylindrique précédée par une surface de révolution.According to a particular embodiment, the brake comprises at least two stages each consisting of at least two openings and at least two gas reception vanes, two consecutive stages being separated by a cylindrical surface preceded by a surface of revolution.
L'invention sera mieux comprise à la lecture de la description qui va suivre d'un mode particulier de réalisation, description faite en référence au dessin annexé qui représente en coupe un frein de bouche selon l'invention fixé à l'extrémité d'un tube d'arme.The invention will be better understood on reading the following description of a particular embodiment, description made with reference to the accompanying drawing which shows in section a muzzle brake according to the invention fixed to the end of a weapon barrel.
Le frein de bouche 1 est ici un frein qui comporte un premier étage la et un deuxième étage lb.The muzzle brake 1 is here a brake which has a first stage la and a second stage lb.
Chaque étage comprend deux ouïes 2a, 2b et deux aubes de réception des gaz 3a, 3b.Each stage includes two vents 2a, 2b and two gas reception vanes 3a, 3b.
Les ouïes 2a, 2b font communiquer l'intérieur du frein 1 avec les aubes qui sont solidaires de l'extérieur du frein. Le frein est fixé par filetage à l'extrémité d'un tube 4 d'une arme, ici un tube rayé dont le calibre (ou diamètre à fond de rayures) est D. L'intérieur du frein présente deux portées cylindriques 5a, 5b au calibre du tube. Une première portée 5a est disposée en aval des premières ouïes 2a dans le sens de parcours d'un projectile tiré par le tube. Une deuxième portée 5b est située en aval des deuxièmes ouïes 2b et débouche à l'extérieur du frein.The vents 2a, 2b communicate the interior of the brake 1 with the blades which are integral with the exterior of the brake. The brake is fixed by thread to the end of a barrel 4 of a weapon, here a rifled tube whose caliber (or diameter at the bottom of stripes) is D. The interior of the brake has two cylindrical surfaces 5a, 5b to the caliber of the tube. A first scope 5a is disposed downstream of the first vents 2a in the direction of travel of a projectile fired by the tube. A second bearing 5b is located downstream of the second vents 2b and opens out to the outside of the brake.
La surface interne du frein est par ailleurs globalement au calibre D du tube de l'arme, tant au niveau des ouïes que des portées cylindriques 5a, 5b. Conformément à l'invention, chaque portée 5a ou 5b est séparée des ouïes qui la précèdent par une surface de révolution conique 6a ou 6b dont la concavité est orientée vers une partie arrière du frein destinée à être fixée à 1 ' arme . Chaque surface conique s'étend longitudinalement sur une longueur (La ou Lb) qui est comprise entre 60% et 80% de la longueur La+Pa ou Lb+Pb de l'aube considérée (Pa et Pb étant respectivement les longueurs des portées cylindriques 5a et 5b) . En d'autres termes la longueur La (ou Lb) est comprise entre 1,5 et 4 fois la longueur Pa (ou Pb) .The internal surface of the brake is moreover overall at caliber D of the barrel of the weapon, both at the level of the gills and of the cylindrical bearings 5a, 5b. According to the invention, each range 5a or 5b is separated from the openings which precede it by a conical surface of revolution 6a or 6b, the concavity of which is oriented towards a rear part of the brake intended to be fixed to the weapon. Each conical surface extends longitudinally over a length (La or Lb) which is between 60% and 80% of the length La + Pa or Lb + Pb of the blade in question (Pa and Pb being respectively the lengths of the cylindrical spans 5a and 5b). In other words, the length La (or Lb) is between 1.5 and 4 times the length Pa (or Pb).
Le diamètre maximal Δa ou Δb de la surface conique 6a, 6b est compris entre 108% et 112% du calibre D du tube.The maximum diameter Δa or Δb of the conical surface 6a, 6b is between 108% and 112% of the gauge D of the tube.
Plus généralement, on choisira un diamètre maximal Δa ou Δb tel que la ceinture d'un projectile flèche ne puisse sortir complètement hors de son logement sur le sabot du projectile.More generally, a maximum diameter Δa or Δb will be chosen such that the belt of an arrow projectile cannot come completely out of its housing on the shoe of the projectile.
De telles dispositions dimensionnelles permettent de recentrer d'une façon fiable la ceinture dans son logement de positionnement sur le projectile. Le fonctionnement d'un tel frein est le suivant:Such dimensional arrangements make it possible to reliably refocus the belt in its positioning housing on the projectile. The operation of such a brake is as follows:
Lors du tir d'un projectile sous-calibré à sabot détachable (non représenté) le projectile traverse le frein de bouche 1. D'une manière connue, les gaz propulsifs sortent à la suite du projectile par les ouïes et viennent exercer une poussée sur les aubes 3a, 3b. Cette poussée compense une partie du recul de l'arme.When firing a sub-calibrated projectile with a detachable shoe (not shown) the projectile passes through the muzzle brake 1. In a known manner, the propellant gases exit following the projectile through the gills and exert a thrust on the vanes 3a, 3b. This thrust compensates for part of the recoil of the weapon.
Les efforts aérodynamiques qui s'exercent sur le projectile ainsi que la force centrifuge (due aux rayures) ont pour effet d'initier un mouvement d'ouverture du sabot du projectile. Les gaz s'exercent également sur la ceinture et ont pour effet d'écarter celle-ci du sabot.The aerodynamic forces exerted on the projectile as well as the centrifugal force (due to scratches) have the effect of initiating an opening movement of the projectile shoe. The gases are also exerted on the belt and have the effect of deviating it from the shoe.
La ceinture du projectile se trouve donc soumise à un effort d'extension et elle amorce un mouvement de sortie hors de son logement du sabot.The projectile belt is therefore subjected to an extension effort and it initiates an outward movement out of its hoof housing.
Bien que le diamètre interne du frein soit au calibre de l'arme au niveau des ouïes, la ceinture se déforme en regard de ces dernières. Les surfaces coniques 6a et 6b vont donc tour à tour recevoir le contact de la ceinture du projectile et elles vont guider celle-ci de façon à la repositionner dans son logement du sabot.Although the internal diameter of the brake is of the caliber of the weapon at the level of the gills, the belt is deformed opposite the latter. The conical surfaces 6a and 6b will therefore in turn receive the contact of the projectile belt and they will guide the latter so as to reposition it in its housing of the shoe.
Les portées cylindriques 5a et 5b au calibre de l'arme assurent alors le guidage du projectile qui sort de l'arme sans perturbation ni obliquité.The cylindrical bearings 5a and 5b of the caliber of the weapon then ensure the guidance of the projectile which leaves the weapon without disturbance or obliquity.
On évite donc, grâce à l'invention, tous chocs de la ceinture du projectile sur les portées cylindriques 5a, 5b du frein. La ceinture est maintenue par les portées et elle reste dans son logement du sabot jusqu'à la sortie du projectile hors du frein de bouche.It is therefore avoided, thanks to the invention, any impact of the projectile belt on the cylindrical surfaces 5a, 5b of the brake. The belt is held by the staves and it remains in its hoof housing until the projectile leaves the muzzle brake.
Il en résulte un tir du projectile sans obliquité et une meilleure précision. Le rendement d'un tel frein de bouche est excellent (de l'ordre de 55 %) car il comporte des ouïes de grande section associées à des aubes larges. Il ne perturbe pourtant pas la trajectoire des projectiles sous calibrés car il assure le repositionnement des ceintures.This results in a projectile shot without obliquity and better accuracy. The performance of such a muzzle brake is excellent (of the order of 55%) because it has large section gills associated with wide blades. However, it does not disturb the trajectory of the sub-calibrated projectiles because it ensures the repositioning of the belts.
Il permet donc un guidage sans chocs du projectile au travers du frein avec des longueurs de portées de guidages relativement réduites (15 % de la longueur totale parcourue par le projectile dans le frein de bouche) .It therefore allows impact-free guidance of the projectile through the brake with relatively short guide span lengths (15% of the total length traveled by the projectile in the muzzle brake).
A titre de variante, il est bien entendu possible de remplacer chaque surface conique par une surface de révolution concave dont la concavité sera orientée vers l'arrière du frein. As a variant, it is of course possible to replace each conical surface with a concave surface of revolution whose concavity will be oriented towards the rear of the brake.

Claims

REVENDICATIONS
1-Frein de bouche (1) pour un tube d'arme, notamment de gros calibre, et comportant au moins deux ouïes (2a, 2b) faisant communiquer l'intérieur du frein avec au moins deux aubes (3a, 3b) de réception des gaz qui sont solidaires de l'extérieur du frein, frein présentant au moins une portée intérieure cylindrique (5a, 5b) au calibre du tube et disposée en aval des ouïes dans le sens de parcours d'un projectile tiré par le tube, frein caractérisé en ce que la portée intérieure cylindrique (5a, 5b) est séparée de la ou des ouïes1-Muzzle brake (1) for a weapon tube, in particular of large caliber, and comprising at least two holes (2a, 2b) making the interior of the brake communicate with at least two receiving vanes (3a, 3b) gases which are integral with the outside of the brake, a brake having at least one cylindrical internal bearing (5a, 5b) of the caliber of the tube and disposed downstream of the gills in the direction of travel of a projectile fired by the tube, brake characterized in that the cylindrical inner surface (5a, 5b) is separate from the opening (s)
(2a, 2b) qui la précèdent par une surface de révolution concave (6a, 6b) dont la concavité est orientée vers l'arrière du frein. 2-Frein de bouche selon la revendication 1, caractérisé en ce que la surface de révolution (6a, 6b) est une surface conique.(2a, 2b) which precede it by a concave surface of revolution (6a, 6b) whose concavity is oriented towards the rear of the brake. 2-Muzzle brake according to claim 1, characterized in that the surface of revolution (6a, 6b) is a conical surface.
3-Frein de bouche selon une des revendications 1 ou 2, caractérisé en ce que la surface de révolution (6a, 6b) s'étend longitudinalement sur une longueur (La,Lb) qui est comprise entre 1,5 et 4 fois la longueur (Pa,Pb) de la portée cylindrique (5a, 5b).3-Muzzle brake according to one of claims 1 or 2, characterized in that the surface of revolution (6a, 6b) extends longitudinally over a length (La, Lb) which is between 1.5 and 4 times the length (Pa, Pb) of the cylindrical seat (5a, 5b).
4-Frein de bouche selon une des revendications 1 à 3, caractérisé en ce -que le diamètre maximal (Δa,Δb) de la surface de révolution (6a, 6b) est compris entre 108% et 112% du calibre D du tube.4-Muzzle brake according to one of claims 1 to 3, characterized in that the maximum diameter (Δa, Δb) of the surface of revolution (6a, 6b) is between 108% and 112% of the gauge D of the tube.
5-Frein de bouche selon une des revendications 1 à 4, caractérisé en ce qu'il comprend au moins deux étages constitués chacun par au moins deux ouïes (2a, 2b) et au moins deux aubes (3a, 3b) de réception des gaz, deux étages consécutifs étant séparés par une portée cylindrique (5a) précédée par une surface de révolution (6a) . 5-Muzzle brake according to one of claims 1 to 4, characterized in that it comprises at least two stages each consisting of at least two openings (2a, 2b) and at least two vanes (3a, 3b) for receiving gases , two consecutive stages being separated by a cylindrical surface (5a) preceded by a surface of revolution (6a).
EP98928369A 1997-05-30 1998-05-28 Muzzle brake for weapon barrel Expired - Lifetime EP0918975B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9706704A FR2764056B1 (en) 1997-05-30 1997-05-30 MOUTH BRAKE FOR WEAPON TUBE
FR9706704 1997-05-30
PCT/FR1998/001061 WO1998054533A1 (en) 1997-05-30 1998-05-28 Muzzle brake for weapon barrel

Publications (2)

Publication Number Publication Date
EP0918975A1 true EP0918975A1 (en) 1999-06-02
EP0918975B1 EP0918975B1 (en) 2000-07-12

Family

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Application Number Title Priority Date Filing Date
EP98928369A Expired - Lifetime EP0918975B1 (en) 1997-05-30 1998-05-28 Muzzle brake for weapon barrel

Country Status (6)

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US (1) US6216578B1 (en)
EP (1) EP0918975B1 (en)
AT (1) ATE194703T1 (en)
DE (1) DE69800211T2 (en)
FR (1) FR2764056B1 (en)
WO (1) WO1998054533A1 (en)

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USD928903S1 (en) * 2019-02-28 2021-08-24 The United States Of America As Represented By The Secretary Of The Army Muzzle brake
EP3869143A1 (en) * 2020-02-20 2021-08-25 BAE SYSTEMS plc Muzzle brake
KR102549354B1 (en) * 2020-02-20 2023-06-28 배 시스템즈 피엘시 muzzle brake
RU2744219C1 (en) * 2020-06-16 2021-03-03 Денис Эрнестович Львов Muzzle compensator brake (mcb)
RU2745462C1 (en) * 2020-07-28 2021-03-25 Денис Эрнестович Львов Muzzle brake-compensator (dtc) with a system for interrupting the supersonic gas flow
US11262150B1 (en) 2020-10-29 2022-03-01 William Ronald VanFossan Muzzle brake
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Also Published As

Publication number Publication date
WO1998054533A1 (en) 1998-12-03
FR2764056A1 (en) 1998-12-04
EP0918975B1 (en) 2000-07-12
ATE194703T1 (en) 2000-07-15
US6216578B1 (en) 2001-04-17
DE69800211D1 (en) 2000-08-17
DE69800211T2 (en) 2000-12-21
FR2764056B1 (en) 1999-07-16

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