US3380340A - Recoil-free weapon - Google Patents
Recoil-free weapon Download PDFInfo
- Publication number
- US3380340A US3380340A US551344A US55134466A US3380340A US 3380340 A US3380340 A US 3380340A US 551344 A US551344 A US 551344A US 55134466 A US55134466 A US 55134466A US 3380340 A US3380340 A US 3380340A
- Authority
- US
- United States
- Prior art keywords
- firing tube
- high pressure
- combustion chamber
- nozzle
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B15/00—Self-propelled projectiles or missiles, e.g. rockets; Guided missiles
-
- 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
- F41A1/00—Missile propulsion characterised by the use of explosive or combustible propellant charges
- F41A1/08—Recoilless guns, i.e. guns having propulsion means producing no recoil
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
- F42B5/02—Cartridges, i.e. cases with charge and missile
- F42B5/10—Cartridges, i.e. cases with charge and missile with self-propelled bullet
- F42B5/105—Cartridges, i.e. cases with charge and missile with self-propelled bullet propelled by two propulsive charges, the rearwardly situated one being separated from the rest of the projectile during flight or in the barrel; Projectiles with self-ejecting cartridge cases
Definitions
- a recoilless firearm having a firing tube which is open at both ends, the rear end of the firing tube having an exhaust nozzle; a high pressure combustion chamber of smaller calibre is inserted in the rear end of the firing tube and connected by an interrupt-able connection to a projectile in the firing tube in front of the combustion chamber; the combustion chamber also having a rear exhaust opening provided with a nozzle, the combustion chamber being longitudinally located in the firing tube by means of position-determining means, so that the nozzle of the combustion chamber is surrounded by the nozzle of the firing tube, whereby the gas pressure forces acting on the combustion chamber at the moment of explosion substantially compensate each other so that the combustion chamber will not be thrown out forwardly or 'backwardly at any appreciable speed.
- the so-called high-low-pressure principle is sometimes used, which means that the propelling gunpowder is burnt substantially within a relatively small container inside the firing tube.
- This container is designed to endure high pressure and its wall is provided with a great number of rather small exhaust openings. Said container will, therefore, serve as a high pressure combustion chamber without such rising of the pressure immediately outside said chamber (that is the pressure which is acting on the inner wall of the firing tube) that it exceeds what said wall endures, because the gases are allowed to expand from the rather small volume in the container out to the considerably greater space around said container.
- This, generally tube-shaped, container is usually fastened to the rear end of the projectile, and is concentric with the firing tube.
- the present invention is mainly characterized by the fact that the high pressure chamber comprises an elongated tube, the rear end of which is shaped as or provided with a gas exhaust nozzle, and that the chamber with its rear end is fastened within the rear end of the firing tube in such a way that the gas exhaust nozzle of the firing tube substantially surrounds the gas exhaust nozzle of the high pressure chamber.
- FIG. 1 illustrates a longitudinal section of such parts of the weapon for which the invention is of importance.
- FIG. 2 illustrates a modified embodiment of the rear part of the device according to FIG. 1.
- the weapon comprises a firing tube 6 with thin walls, for example of glass fibre laminate, the rear end of which is shaped as a nozzle 12, and which encloses an aerodynamically steered projectile.
- a firing tube 6 with thin walls, for example of glass fibre laminate, the rear end of which is shaped as a nozzle 12, and which encloses an aerodynamically steered projectile.
- the rear end 1 of that projectile is illustrated.
- Said high pressure chamber has also a front end wall 3 which is connected to the rear end of the projectile by means of a pin 2.
- the high pressure chamber 5 is supported within the firing tube 6 at its front end as well as at its rear end by means of one or more centering members 16 and 17, respectively, in the form of fin wreaths which make small resistance to the gas stream.
- the rear centering member 7 abuts against a constriction 14 in the firing tube through an annular member 8.
- the high pressure chamber 5 is provided with a rear gas exhaust opening.
- An exhaust nozzle 9 is fixed in said opening by means of a tube 15 which is provided with inner and outer threads.
- the ex haust nozzle 9 is closed by a damming washer 13.
- Another damming washer 10 is adapted to close the annular opening between the high pressure chamber and the nozzle 12 of the firing tube. This damming washer 19 is kept in place by means of an annular member 11 which is threaded onto the nozzle of the high pressure chamber.
- a pressure is generated in the high pressure chamber 5 when the gunpowder is burnt, said high pressure causing gunpowder gases to stream out through the openings 4 into the space nearest behind the projectile.
- the gas pressure in this space acts on the pro jectile 2 as well as on the damming washer 10, which is so designed, that it will break at the same time as the pin 2 is broken off, or somewhat earlier than that.
- the damming washer 13, which is exposed to the strain from the pressure within the high pressure chamber 5, is so designed that it will break at about the same time.
- the sum of the different forces acting in the high pressure chamber is approximately zero, if the damming washers and the pin 2 break approximately at the same time and if the area of the nozzle of the firing tube and the nozzle 9 of the high pressure chamber are properly adjusted.
- the latter When the projectile has been disconnected from the high pressure chamber, the latter will be actuated by the rearwards directed gas stream, but also by the reaction force in its nozzle 9 and said forces are -balanc ing against each other. If the balance is perfect, the high pressure chamber will remain still in the firing tube.
- the high pressure container is provided with a further centering member 18 which, together with the centering means 7, keeps the combination of the projectile and the high pressure chamber in place during the handling of the weapon by clamping the annular constriction member 14, said constriction member being protected against punctual load by means of two annular members 8 and 17, respectively.
- the operation of the weapon will be the same as described before but the high pressure chamber and the projectile are now locked in the firing tube during the handling of the same without exposing the washer 10 to any strain.
- a recoilless weapon comprising, an aerodynamically stabilized projectile, a firing tube enclosing said projectile, said firing tube having a gas exhaust nozzle, a highpressure combustion chamber enclosed by a part of the firing tube, the high-pressure combustion chamber having a strong wall and being provided with a number of exhaust openings, the high-pressure combustion chamber being located behind the projectile and being connected to the projectile by an easily interrupted connection that is adapted to be interrupted under the action of propelling gases; the high-pressure combustion chamber having a calibre smaller than the calibre of the surrounding firing tube and the calibre of the projectile, the high-pressure combustion chamber consisting of an elongated tube having a gas exhaust nozzle at its rear end, said highpressure combustion chamber being fastened to the rear end of the firing tube in a location where the exhaust nozzle of the firing tube surrounds the exhaust nozzle of the high-pressure combustion chamber, the annular walls of the nozzle being radially spaced by an annular air gap, and said air gap forming a longitudinal continuation of an annul
- a recoilless weapon according to claim 1 wherein a constriction is provided in the exhaust nozzle of the firing tube, said constriction surrounding said gas exhaust nozzle of the said high-pressure combustion chamber at the front part thereof.
- a recoilless weapon according to claim 1, wherein a damming washer is provided around the nozzle of the high-pressure combustion chamber, the periphery of the washer abutting against the inner wall of the rear part of the firing tube, said rear part being funnel-shaped, said washer serving as a locating means for determining the longitudinal location of the high-pressure chamber and the projectile in the firing tube.
- said wntering means is mechanically connected to said high-pressure combustion chamber and comprises two longitudinally spaced fin wreaths, one of which is located in front of the constriction in said firing tube and engages the front surface of the constriction and the other fin wreath engages the rear surface of the constriction behind which it is located.
- a recoilless weapon according to claim 8 wherein there are load-distributing annular metal members disposed between said fin wreaths and said surfaces of said constriction.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Toys (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE822465 | 1965-06-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3380340A true US3380340A (en) | 1968-04-30 |
Family
ID=20273490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US551344A Expired - Lifetime US3380340A (en) | 1965-06-22 | 1966-05-19 | Recoil-free weapon |
Country Status (6)
Country | Link |
---|---|
US (1) | US3380340A (xx) |
BE (1) | BE682887A (xx) |
CH (1) | CH445339A (xx) |
DK (1) | DK126605B (xx) |
GB (1) | GB1098020A (xx) |
NL (2) | NL6608565A (xx) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3677131A (en) * | 1970-12-16 | 1972-07-18 | Norris Industries | Disposable projectile launcher of the recoilless type |
US4026189A (en) * | 1975-02-20 | 1977-05-31 | Forenade Fabriksverken | Projectile locking device |
US4676136A (en) * | 1985-11-29 | 1987-06-30 | Werkzeugmaschinenfabrik Oerlikon-Buhrle Ag | Apparatus for recoilless firing of projectiles from a lauching tube |
US4962689A (en) * | 1989-08-01 | 1990-10-16 | Hughes Aircraft Company | Gas generator missile launch system |
US5076136A (en) * | 1988-05-27 | 1991-12-31 | Westinghouse Electric Corp. | Electromagnetic launcher system |
US6044746A (en) * | 1997-06-11 | 2000-04-04 | Etienne Lacroix Trous Artifices S.A. | Projectile propulsion assembly that limits recoil force |
US8322264B1 (en) * | 2007-02-13 | 2012-12-04 | The United States Of America As Represented By The Secretary Of The Army | Controlled plastic venting for low-recoil gun systems |
US20160209159A1 (en) * | 2013-07-11 | 2016-07-21 | United States Of America As Represented By The Secretary Of The Army | Projectile Launcher with a Permanent High-Low Pressure System |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2146416A (en) * | 1983-09-09 | 1985-04-17 | Gq Defence Equip Ltd | Projectile propulsive device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2313119A (en) * | 1941-09-30 | 1943-03-09 | Ibm | Line justifying device |
US2598256A (en) * | 1945-04-21 | 1952-05-27 | Us Sec War | Recoilless gun |
US2919635A (en) * | 1956-09-17 | 1960-01-05 | Fairchild Camera Instr Co | Printing exposure machine for photosensitive materials |
US2986973A (en) * | 1954-09-20 | 1961-06-06 | Arnold L Waxman | Low-recoil, variable-range missile projector |
-
0
- NL NL137772D patent/NL137772C/xx active
-
1966
- 1966-05-19 GB GB22261/66A patent/GB1098020A/en not_active Expired
- 1966-05-19 US US551344A patent/US3380340A/en not_active Expired - Lifetime
- 1966-05-24 CH CH756666A patent/CH445339A/de unknown
- 1966-06-10 DK DK297666AA patent/DK126605B/da unknown
- 1966-06-21 NL NL6608565A patent/NL6608565A/xx unknown
- 1966-06-21 BE BE682887D patent/BE682887A/xx unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2313119A (en) * | 1941-09-30 | 1943-03-09 | Ibm | Line justifying device |
US2598256A (en) * | 1945-04-21 | 1952-05-27 | Us Sec War | Recoilless gun |
US2986973A (en) * | 1954-09-20 | 1961-06-06 | Arnold L Waxman | Low-recoil, variable-range missile projector |
US2919635A (en) * | 1956-09-17 | 1960-01-05 | Fairchild Camera Instr Co | Printing exposure machine for photosensitive materials |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3677131A (en) * | 1970-12-16 | 1972-07-18 | Norris Industries | Disposable projectile launcher of the recoilless type |
US4026189A (en) * | 1975-02-20 | 1977-05-31 | Forenade Fabriksverken | Projectile locking device |
US4676136A (en) * | 1985-11-29 | 1987-06-30 | Werkzeugmaschinenfabrik Oerlikon-Buhrle Ag | Apparatus for recoilless firing of projectiles from a lauching tube |
US5076136A (en) * | 1988-05-27 | 1991-12-31 | Westinghouse Electric Corp. | Electromagnetic launcher system |
US4962689A (en) * | 1989-08-01 | 1990-10-16 | Hughes Aircraft Company | Gas generator missile launch system |
US6044746A (en) * | 1997-06-11 | 2000-04-04 | Etienne Lacroix Trous Artifices S.A. | Projectile propulsion assembly that limits recoil force |
US8322264B1 (en) * | 2007-02-13 | 2012-12-04 | The United States Of America As Represented By The Secretary Of The Army | Controlled plastic venting for low-recoil gun systems |
US20160209159A1 (en) * | 2013-07-11 | 2016-07-21 | United States Of America As Represented By The Secretary Of The Army | Projectile Launcher with a Permanent High-Low Pressure System |
US9448033B2 (en) * | 2013-07-11 | 2016-09-20 | The United States Of America As Represented By The Secretary Of The Army | Projectile launcher with a permanent high-low pressure system |
Also Published As
Publication number | Publication date |
---|---|
CH445339A (de) | 1967-10-15 |
NL137772C (xx) | |
DK126605B (da) | 1973-07-30 |
DE1578008A1 (de) | 1971-01-21 |
GB1098020A (en) | 1968-01-03 |
BE682887A (xx) | 1966-12-01 |
DE1578008B2 (de) | 1975-07-31 |
NL6608565A (xx) | 1966-12-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2227066C (en) | Barrel assembly with axially stacked projectiles | |
RU2204110C2 (ru) | Огнестрельное оружие | |
US4676136A (en) | Apparatus for recoilless firing of projectiles from a lauching tube | |
US5952601A (en) | Recoilless and gas-free projectile propulsion | |
US3388666A (en) | Rifle grenade | |
US3167016A (en) | Rocket propelled missile | |
US3380340A (en) | Recoil-free weapon | |
US20220299279A1 (en) | Apparatus and method for accelerating an object via an external free jet | |
US3139795A (en) | Tandem loaded firing tubes | |
US6896204B1 (en) | Water pressured destruct enhancer | |
US3491692A (en) | Multi-stage rocket | |
US2681619A (en) | Rocket projectile | |
US3326128A (en) | Rockets and combinations of rockets and cases | |
US3903802A (en) | Shell construction sealing washer | |
US4397240A (en) | Rocket assisted projectile and cartridge with time delay ignition and sealing arrangement | |
US3999379A (en) | Reduction of depressurization thrust termination jolt | |
US3176615A (en) | Gun-propelled rocket-boosted missile | |
US3044363A (en) | Propulsion means for projectiles | |
US3438303A (en) | System including a tubular launching tube and a rocket provided with an outer auxiliary launching charge | |
JPH0447240B2 (xx) | ||
US3610093A (en) | Recoilless gun | |
US3376784A (en) | Spacing member for a recoil-free weapon | |
US2440305A (en) | Rocket projectile | |
US2834255A (en) | Recoilless firearm and ammunition therefor | |
US4012987A (en) | Dual combustion missile system |