EP0485066A1 - Cased telescoped ammunition - Google Patents

Cased telescoped ammunition Download PDF

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Publication number
EP0485066A1
EP0485066A1 EP91309068A EP91309068A EP0485066A1 EP 0485066 A1 EP0485066 A1 EP 0485066A1 EP 91309068 A EP91309068 A EP 91309068A EP 91309068 A EP91309068 A EP 91309068A EP 0485066 A1 EP0485066 A1 EP 0485066A1
Authority
EP
European Patent Office
Prior art keywords
projectile
round
sabot
control tube
cased telescoped
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.)
Withdrawn
Application number
EP91309068A
Other languages
German (de)
English (en)
French (fr)
Inventor
Steven Roy Duke
Glenn Ernest Rossier
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of EP0485066A1 publication Critical patent/EP0485066A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F42B5/045—Cartridges, i.e. cases with charge and missile of telescopic type
    • 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

Definitions

  • This invention relates to cased telescoped ammunition utilizing a "control tube” to provide an initial forward displacement of the projectile from the case into the gun barrel prior to the subsequent ignition of the main charge which propells the projectile along the length of the gun barrel.
  • Cased telescoped ammunition utilizing control tubes are well known, and are shown, for example, in: U.S. 4,938,145, issued July 3, 1990 to W.E. Martwick; U.S. 4,907,510, issued March 13, 1990 to W.E. Martwick, et al; U.S. 4,846,069, issued July 11, 1989 to B.B. Tasson, et al; U.S. 4,803,927, issued Feb. 14, 1989 to W.J. Washburn; U.S. 4,782,758, issued Nov. 8, 1988 to W.J. Washburn; U.S. 4,691,638, issued Sept. 8, 1987 to D.A. Meyer, et al; and U.S. 4,604,954, issued Aug. 12, 1986 to S.E. Clarke, et al.
  • Cased telescoped ammunition not utilizing control tubes are also well known, and are shown, for example, in: U.S. 3,009,394, issued Nov. 21, 1961 to E.A. Kamp, et al.
  • sabots are not of full bore dimension at the forward end of the sabot and penetrator assembly. It will also be noted that the use of spin stabilized penetrators in a sabot projectile in a cased telescoped round is not shown.
  • An object of this invention is to provide a simplified cased telescoped round of ammunition utilizing a control tube for (i) a full bore projectile or (ii) an APDS sabot projectile (i.e., not a long rod sabot projectile.)
  • Another object is to provide such a cased telescoped round of minimalized length.
  • Yet another object is to provide such a cased telescoped round with a minimalized number of parts to make up the assembly and wherein the control tube is integral with the aft seal and itself retains the projectile.
  • Still another object is to provide such a cased telescoped round with an APDS sabot projectile with minimalized potential balloting and minimalized control tube launch stroke length.
  • a feature of this invention is a cased telescoped round having a control tube which is integral with the aft seal and itself retains the projectile against loose forward movement.
  • This round 10 is comprised of a metal case 12 which is clipped to and between a front seal 14 and an aft seal 16.
  • a control tube 18 is fixed into a longitudinal bore 20 in the aft seal.
  • the tube 18 has an aft bore portion 22 in which is fixed a primer 24, an intermediate flash passageway 26, and a forward bore portion 28 in which is fixed a booster charge 30.
  • An annular aft main charge 32 and an annular forward main charge 34 support these between a frangible retainer 36 which is clipped into a groove 38 in the base portion of a full bore projectile 40 (HEI, API or TP).
  • the projectile has a piston 42 extending aftwardly from its base portion into the forward bore portion 28 of the control tube.
  • the projectile has a rotating band 44 to provide spin stabilization.
  • the front seal has a longitudinal bore 46 therein which will pass the projectile and which is closed by a frangible disc 48.
  • the primer 24 is percussed to provide ignition gas to the booster charge 30 which generates an initial volume of hot combustion gas.
  • the gas acts against the aft surface of the piston 42 to move the projectile forwardly, fracturing the retainer 36 and the disc 48, and into the gun barrel.
  • the hot combustion gas from the booster vents from the tube to ignite the forward and aft main charges, which generate the main volume of combustion gas to progressively fully seat the projectile in the barrel, engrave the rotating band, and send the projectile along the length of the gun barrel and out the muzzle.
  • FIG. 2 A much shorter and simpler round is shown in FIG. 2 as a first embodiment of the present invention.
  • This round 100 is comprised of a case 112 (here shown as metal, but which may be nonmetallic) which is clipped to and between a front seal 114 and an aft seal 116 which also serves as a full caliber control tube and a projectile retention device.
  • the case 112 may be integral with the aft seal 116.
  • the main charge 118 is a single tube having a longitudinal bore having a forward portion with a diameter to accommodate the diameter of the rotating band 120 on the projectile 122, and an aft portion with a diameter to accommodate the diameter of the control tube portion 116A of the aft seal 116.
  • the forward-most margin of the control tube portion has an annular crimp 124 which fits into an annular groove 126 in the projectile 122 aft of the rotating band.
  • the aft seal 116 also has a cup 116B formed therein which receives a primer 128, and a flash passageway 130 which leads into the interior of the control tube portion which receives the booster charges 132.
  • the annular crimp 124 is formed after the booster and the projectile have been inserted into the control tube portion in the same manner that the neck of a conventional cartridge case is crimped onto a projectile.
  • the HEI projectile will include a fuze, which may be of the type shown in U.S. 4,242,963, issued Jan. 6, 1981 to R.T. Ziemba.
  • the case joins the seals with snap-in features, not shown, which may be of the type shown in U.S. 4,691,638, mentioned previously.
  • the round is made up of seven parts: projectile, primer, booster charge, main charge, aft seal, forward seal and case.
  • FIG. 3 Another much shorter and simpler round is shown in FIG. 3 as a second embodiment of the present invention.
  • the round shown here is an APDS configuration with a modification of the sabot projectile shown in U.S. 4,881,466, issued Nov. 2, 1989 to J.E. McGinley.
  • This round 200 is comprised of a metal case 212 which is clipped to and between a front seal 214 and an aft seal 216 which also serves-as a full caliber control tube and a projectile retention device.
  • the main charge 218 is a single tube having a longitudinal bore having a forward portion with a diameter to accommodate the rotating band 220 in the sabot foresection 222, and an aft portion with a diameter to accommodate the diameter of the control tube portion 216A of the aft seal 216.
  • the forwardmost margin of the control tube portion has an annular crimp 224 which fits into an annular groove 226 in the sabot foresection 222 aft of the rotating band.
  • the aft seal 216 also has a cup 216B formed therein which receives a primer 228 formed therein which receives a primer 228 and a flash passageway 230 which leads into the interior of the control tube portion which receives the booster charge 232.
  • the sabot assembly includes a pusher 234.
  • the sabot foresection 236 also provides a bore-rider and an integral closed front 238.
  • the subcaliber penetrator 240 is surmounted with a wind
  • the blunt-nose sabot projectile provided by the bore-rider provides two major improvements over the conventional sabot projectile: (i) the penetrator is much better supported in the barrel bore, thereby reducing balloting of the projectile and resultant dispersion, and (ii) the barrel bore is sealed sooner in the launch stroke which enables much greater flexibility in the design of the control tube launch and sequencing of the main charge ignition, i.e., the conventional problem of obturating the barrel prior to main charge ignition is eliminated.
  • Location of the rotating band along the sabot is also flexible from the point of view of launch dynamics and may be moved forward on the projectile to allow the full-bore control tube to extend further forward. This is true for conventional and saboted projectiles. Obviously, constraints on sabot strength and transmission of rotational loads for spin-up must also be considered in band location.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Portable Nailing Machines And Staplers (AREA)
EP91309068A 1990-10-09 1991-10-03 Cased telescoped ammunition Withdrawn EP0485066A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US59491890A 1990-10-09 1990-10-09
US594918 1990-10-09

Publications (1)

Publication Number Publication Date
EP0485066A1 true EP0485066A1 (en) 1992-05-13

Family

ID=24380964

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91309068A Withdrawn EP0485066A1 (en) 1990-10-09 1991-10-03 Cased telescoped ammunition

Country Status (6)

Country Link
EP (1) EP0485066A1 (ko)
JP (1) JPH05196398A (ko)
KR (1) KR920008462A (ko)
CA (1) CA2048803A1 (ko)
IL (1) IL99532A0 (ko)
NO (1) NO913846L (ko)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US390232A (en) * 1888-10-02 Accelerating-cartridge
FR815871A (fr) * 1936-04-03 1937-07-24 Cartouche pour armes à feu
US2851927A (en) * 1956-01-27 1958-09-16 Airtek Dynamics Inc Machine guns with two section firing chambers
US3009394A (en) * 1960-07-12 1961-11-21 Ewald A Kamp Ammunition link
US4220089A (en) * 1978-07-24 1980-09-02 The United States Of America As Represented By The Secretary Of The Army Cartridge for a fully telescoped projectile
US4802415A (en) * 1987-12-28 1989-02-07 Ford Aerospace Corporation Telescoped ammunition round having subcaliber projectile sabot with integral piston
US4803927A (en) * 1986-02-03 1989-02-14 Aerojet-General Corporation Ammunition round and method of manufacture thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US390232A (en) * 1888-10-02 Accelerating-cartridge
FR815871A (fr) * 1936-04-03 1937-07-24 Cartouche pour armes à feu
US2851927A (en) * 1956-01-27 1958-09-16 Airtek Dynamics Inc Machine guns with two section firing chambers
US3009394A (en) * 1960-07-12 1961-11-21 Ewald A Kamp Ammunition link
US4220089A (en) * 1978-07-24 1980-09-02 The United States Of America As Represented By The Secretary Of The Army Cartridge for a fully telescoped projectile
US4803927A (en) * 1986-02-03 1989-02-14 Aerojet-General Corporation Ammunition round and method of manufacture thereof
US4802415A (en) * 1987-12-28 1989-02-07 Ford Aerospace Corporation Telescoped ammunition round having subcaliber projectile sabot with integral piston

Also Published As

Publication number Publication date
NO913846L (no) 1992-04-10
JPH05196398A (ja) 1993-08-06
CA2048803A1 (en) 1992-04-10
IL99532A0 (en) 1992-08-18
NO913846D0 (no) 1991-10-01
KR920008462A (ko) 1992-05-28

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Effective date: 19921114