US3789763A - Fin-stabilized projectile for launchers, mortars and the like - Google Patents

Fin-stabilized projectile for launchers, mortars and the like Download PDF

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Publication number
US3789763A
US3789763A US00191273A US3789763DA US3789763A US 3789763 A US3789763 A US 3789763A US 00191273 A US00191273 A US 00191273A US 3789763D A US3789763D A US 3789763DA US 3789763 A US3789763 A US 3789763A
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United States
Prior art keywords
tail
powder
annular
perforations
carrier sleeve
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
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US00191273A
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English (en)
Inventor
F Donner
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Individual
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Individual
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Publication date
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Publication of US3789763A publication Critical patent/US3789763A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
    • F42B30/08—Ordnance projectiles or missiles, e.g. shells
    • F42B30/10—Mortar projectiles
    • F42B30/12—Mortar projectiles with provision for additional propulsive charges, or for varying the length

Definitions

  • This invention relates to a fin-stabilized projectile for launchers, mortars and the like and more particularly to the tail member of the projectile which serves both to support the fin assembly and to contain a propulsion charge powder cartridge.
  • fin-stabilized projectiles normally comprise an annular tail member upon which the fin assembly is mounted and within which the propulsion charge is located. Perforations are provided in the wall of the annular tail member between the plurality of fins permitting the gases emitted following firing of the charge to be released.
  • a disadvantage of this arrangement is that the size of the propulsive charge is limited since the area provided within the tail member for containing the propulsion charge is only coextensive with that part of the tail member supporting the fin assembly.
  • the propulsion charge in the form of a cartridge contains the detonator as well as the powder charge, and since the length of the cartridge is limited to that portion of the tail member carrying the fin assembly the initial or starting speed of the projectile upon firing the charge is correspondingly limited.
  • An object of the present invention is to provide a fin stabilized projectile in which greater amounts of powder charge can be accommodated whereby the starting speed of th projectile can be increased.
  • a further object of the invention is to provide a tail member for the projectile which is capable of accommodating a tubular powder member of greater length than was previously possible whereby the starting speed of the projectile can be increased.
  • FIG. 1 is a side view partly in section of the rear portion of a fin-stablized projectile according to the invention
  • FIG. 2 is a side view partly in section of the rear portion of a projectile in accordance with another embodiment of the invention.
  • FIG. 3 is a more detailed side view partly in section of the powder charge cartridge shown in FIG. 1.
  • the projectile body 1 of the fin-stabilized projectile is provided at the rear end with an annular tail member 2 which may be conveniently internally threaded at the forward end and screwed onto an externally threaded part 1a at the rear of the body 1.
  • a fin assembly 3 comprising a plurality of radially extending fins is mounted on the rear portion of the annular tail member 2.
  • a plurality of perforations or holes 4 is provided in the wall of the annular tail member forwardly of the fin assembly to permit release of gases generated during discharge of the explosive contained therein.
  • a powder cartridge shown generally at 5 for propelling the projectile is housed interiorally of the annular tail member 2.
  • the powder cartridge includes an annu lar plug 6 having external helical threads 7 whereby the plug may be screwed into the rear end of the annular tail member 2 which contains corresponding internal helical threads.
  • An annular seat is provided at the forward end of the plug 6, and one end of an annular carrier sleeve ll having an outwardly extended angled portion 14 is located in the annular seat 15 with the angled portion 14 5 l1, and a detonator 9 is positioned internally and at the rear end of the plug 6.
  • An elongated tubular powder member M) is supported internally on the carrier sleeve Ill and projects forwardly to a position adjacent the forward end of the 10 annular tail member 2.
  • the step 13 serves to limit rearward movement of the tubular powder member it) beyond a predetermined point.
  • the tubular powder member lid advantageously is at least long enough for its forward end 10a to reach at least to the forwardmost perforation 4 in the annular tail member 2 and may even extend into the interior of the rear end lla of the projectile body 1.
  • the rear section 2a of the annular tail member 2 which supports the fin assembly 3 is considerably longer than those in prior art constructions so that the chamber for accommodating the powder cartridge is enlarged. Ideally, the rear section 2a should be substantially the same length as the section of the tail member '2 containing the perforations 4.
  • the tubular powder member may be optionally enclosed within an outer sleeve I16 and an inner sleeve 17. Also, the forward end 10a of the tubular powder member 10 may be closed. A free annular space 18 is preferably provided between the rear end of the tubular powder member l0 and the externally threaded plug 6, the
  • a powder plug 20 is located at the forward end of the carrier sleeve ill in. the interior of the annular tubular powder member Ml. Forwardly of the powder plug 243 the space within the tubular powder member 10 is unoccupied and serves to reinforce combustion of the powder charge upon firing. Additional charges can optionally be positioned about the annular tail member 2 as indicated at 22.
  • tubular powder member ltla of the powder cartridge 5a is pressed onto the carrier sleeve III to the extent of the limit step 13.
  • the tubular powder member lltlq is not closed at the front end by the powder material itself but rather is closed by a cover 23 of thin foil, paper or the like.
  • the interior surface of the hollow space within the annular tail member 2 is provided with a sleeve 24 made of a combustible material.
  • the sleeve 24 serves to cover the plurality of apertures 41 so that the powder member 10a which projects forwardly within the annular tail member is protected from any foreign matter which might otherwise enter through the perforations. 7
  • a tail construction for a fin-stabilizing projectile for launchers, mortars and the like comprising a an elongated annular tail member having a tin assembly mounted on the exterior thereof and having a chamber therein and a plurality of perforations in J the wall thereof communicating with said chamber, and
  • said powder cartridge including an elongated tubular powder member with a hollow interior space, an elongated annular carrier sleeve extending through said hollow interior space of said tubular powder member to support said elongated tubular powder member in said chamber in a position such that an annular air space is present between the exterior surface of said powder member and the interior surface of said perforated wall of said tail member and securing one end of said carrier sleeve to the rear end of said annular tail member,
  • a tail construction as defined in claim 1 further comprising a frangible annular sleeve located contiguous to the interior of said tail member and covering said plurality of perforations to protect said powder cartridge from foreign matter until said powder cartridge is used.
  • a tin-stabilized projectile as defined in claim 8 further comprising a powder plug in the interior of said carrier sleeve.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Prostheses (AREA)
US00191273A 1970-10-21 1971-10-21 Fin-stabilized projectile for launchers, mortars and the like Expired - Lifetime US3789763A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2051574A DE2051574C3 (de) 1970-10-21 1970-10-21 Flügelstabilisiertes Geschoß für Werfer, Mörser u. dgl

Publications (1)

Publication Number Publication Date
US3789763A true US3789763A (en) 1974-02-05

Family

ID=5785692

Family Applications (1)

Application Number Title Priority Date Filing Date
US00191273A Expired - Lifetime US3789763A (en) 1970-10-21 1971-10-21 Fin-stabilized projectile for launchers, mortars and the like

Country Status (10)

Country Link
US (1) US3789763A (fi)
CA (1) CA947140A (fi)
DE (1) DE2051574C3 (fi)
DK (1) DK134793C (fi)
FI (1) FI54651C (fi)
FR (1) FR2111615A5 (fi)
GB (1) GB1361245A (fi)
IL (1) IL37945A (fi)
NO (1) NO130372B (fi)
SE (1) SE390339B (fi)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951037A (en) * 1973-10-10 1976-04-20 Valinor Anstalt Projectile launching device
US4549487A (en) * 1983-09-29 1985-10-29 Pocal Industries, Inc. Practice projectile with variable range
US4887534A (en) * 1988-06-10 1989-12-19 Honeywell Inc. Ignition system for high intrusion projectile
US20050082419A1 (en) * 2003-06-27 2005-04-21 Richard Dryer Projectile with propelling charge holder

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE427695B (sv) * 1982-04-01 1983-04-25 Foerenade Fabriksverken Delladdning for en vinggranat
GB2160625A (en) * 1984-05-12 1985-12-24 Diehl Gmbh & Co A propelling charge for large-calibre weapons

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052546A (en) * 1934-04-05 1936-09-01 Brandt Edgar William Propulsive cartridge for projectiles
GB496792A (en) * 1937-03-31 1938-12-06 Jean Fabry Improvements in projectiles provided with tail-fins
US2694364A (en) * 1949-01-18 1954-11-16 Lyle K Liljegren Streamlined mortar shell

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052546A (en) * 1934-04-05 1936-09-01 Brandt Edgar William Propulsive cartridge for projectiles
GB496792A (en) * 1937-03-31 1938-12-06 Jean Fabry Improvements in projectiles provided with tail-fins
US2694364A (en) * 1949-01-18 1954-11-16 Lyle K Liljegren Streamlined mortar shell

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951037A (en) * 1973-10-10 1976-04-20 Valinor Anstalt Projectile launching device
US4549487A (en) * 1983-09-29 1985-10-29 Pocal Industries, Inc. Practice projectile with variable range
US4887534A (en) * 1988-06-10 1989-12-19 Honeywell Inc. Ignition system for high intrusion projectile
US20050082419A1 (en) * 2003-06-27 2005-04-21 Richard Dryer Projectile with propelling charge holder
US7024998B2 (en) * 2003-06-27 2006-04-11 Raytheon Company Projectile with propelling charge holder

Also Published As

Publication number Publication date
IL37945A0 (en) 1972-04-27
GB1361245A (en) 1974-07-24
FR2111615A5 (fi) 1972-06-02
IL37945A (en) 1975-12-31
FI54651B (fi) 1978-09-29
DK134793C (da) 1977-06-06
DK134793B (da) 1977-01-17
NO130372B (fi) 1974-08-19
SE390339B (sv) 1976-12-13
DE2051574C3 (de) 1974-05-02
DE2051574B2 (de) 1973-09-27
DE2051574A1 (de) 1972-05-04
FI54651C (fi) 1979-01-10
CA947140A (en) 1974-05-14

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