US2793590A - Practice projectile - Google Patents

Practice projectile Download PDF

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Publication number
US2793590A
US2793590A US342181A US34218153A US2793590A US 2793590 A US2793590 A US 2793590A US 342181 A US342181 A US 342181A US 34218153 A US34218153 A US 34218153A US 2793590 A US2793590 A US 2793590A
Authority
US
United States
Prior art keywords
projectile
practice
base
same
operational
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
Application number
US342181A
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English (en)
Inventor
Brandt Edgar William
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.)
Anstalt Fuer die Entwicklung von Erfindungen und Gewerblichen Anwendungen ENERGA
Original Assignee
Anstalt Fuer die Entwicklung von Erfindungen und Gewerblichen Anwendungen ENERGA
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 Anstalt Fuer die Entwicklung von Erfindungen und Gewerblichen Anwendungen ENERGA filed Critical Anstalt Fuer die Entwicklung von Erfindungen und Gewerblichen Anwendungen ENERGA
Application granted granted Critical
Publication of US2793590A publication Critical patent/US2793590A/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
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/08—Primers; Detonators
    • F42C19/0823—Primers or igniters for the initiation or the propellant charge in a cartridged ammunition
    • F42C19/0826—Primers or igniters for the initiation or the propellant charge in a cartridged ammunition comprising an elongated perforated tube, i.e. flame tube, for the transmission of the initial energy to the propellant charge, e.g. used for artillery shells and kinetic energy penetrators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/02—Stabilising arrangements
    • F42B10/04—Stabilising arrangements using fixed fins
    • F42B10/06—Tail fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/04—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type
    • F42B12/10—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of armour-piercing type with shaped or hollow charge
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B8/00—Practice or training ammunition
    • F42B8/02—Cartridges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B8/00—Practice or training ammunition
    • F42B8/12—Projectiles or missiles

Definitions

  • Certain types of projectiles which, on being fired from a gun barrel and stabilized byvanes, are given a slow gyration due to a slight inclination of the rifiing of the weapon, which is intended to prevent the systematic deviation to which they would be subject if there were no gyration, under the influence of an asymmetry of shape or unbalance of mass.
  • One of the objects of the present invention is to produce an economical practice projectile which can be fired from the same weapon and under the same conditions as a vaned projectile of the aforementioned type, but stabilized by the slow gyration which, in the case of the operational projectile only had the function of increasing the accuracy of fire and was not intended to effect stabilization during the trajectory of the projectile.
  • the practice projectile of the present invention which is intended to be fired from a gun having slightly inclined rifiing, is encased inside a case and comprises a hollow cylindrical body, a driving band, a conical ballistic cap deformable on impact, and a flat base of light material.
  • Said projectile is characterized in that said hollow cylindrical body, which is of high density, has a height substantially equal to its diameter, the total height of the shell being smaller than two calibres.
  • the hollow cylindrical body preferably constitutes nine tenths of the total mass of the projectile. Since the greater part of the weight of the projectile is distributed over its periphery, it follows that the projectile retains on its trajectory a gyroscopic energy sufiicient to ensure its stability. Moreover, as the conical ogive and the base do not by themselves amount to more than one tenth of the total weight, the longitudinal couple is minimal and a suitable distribution of the masses avoids the rocking of the projectile.
  • the cylindrical body has, starting from mid-height and as far as the base,
  • the body of high density may comprise two parts, one acting as a framework and of lighter material than the second, and the'other being outside the first and constituting the principal mass of the body which forms a stabilizing centrifugal mass.
  • Another feature of the invention consists in the position of the driving band adapted to take the rifiing of the barrel, which is disposed forwards of the body, level with the base of the ballistic cap, so that the construction permits the engagement of the whole body of the to say, the ejection of the case after the shot has been projectile in the case, thereby ensuring good behaviour and protection of the whole arrangement.
  • the volume of the combustion chamber contained inside the case of the practice projectile can be reduced by lining the same internally with a sheet of an inert material such as cardboard wrapped around itself.
  • the base of the projectile of light material and slightly smaller in diameter than that of the body, is able to fit into the latter and to adhere there as a tight fit. It can, moreover, carry on its inside face a tracer charge and a self-destruction charge.
  • the projectile of the present invention facilitates practice firing, renders it economical and free from danger.
  • the tracer ensures visibility of the trajectory and the self-destruction charge prevents ricochets.
  • the deformable ogive of light metal, or if desired of plastic material is shattered and the cylindrical body bites into the ground by which it is immediately checked.
  • Figure 1 is a side elevation in partial longitudinal section of an operational hollow charge projectile in its case
  • Figure 2 shows a side elevation of a practice projectile according to the invention, in longitudinal half-section
  • Figure 3 shows a side elevation partly in longitudinal section of a modified form of the projectile illustrated in Figure 2;
  • Figure 4 shows diagrammatically the dismemberment by self-destruction of the projectile shown in Figure 2
  • Figure 5 shows diagrammatically the projectile illustrated in Figure 2 on impact with the ground.
  • the practice projectile illustrated in Figure 2 and forming the subject of the invention comprises a hollow erably consists ofsteel, castiron'or brass, while an aluminium alloy can be used to make the ogive 2 and'the base 3.
  • the centre of gravity G of the projectile is situated about one quarter of the total height of the projectile from the base, because ofthe substantially 'doubledthickness of the body 1 over the rear half ofits-height.
  • the driving band 7 is placed near-the frontend'o f thebody at the base of the ballistic cap 2.,and is -preferably,
  • the metal cap 2 may be replaced by a light ballistic cap of plastic material as shown at 2a ( Figure 3).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Buffer Packaging (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Toys (AREA)
US342181A 1952-04-05 1953-03-13 Practice projectile Expired - Lifetime US2793590A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH724967X 1952-04-05

Publications (1)

Publication Number Publication Date
US2793590A true US2793590A (en) 1957-05-28

Family

ID=4531831

Family Applications (1)

Application Number Title Priority Date Filing Date
US342181A Expired - Lifetime US2793590A (en) 1952-04-05 1953-03-13 Practice projectile

Country Status (6)

Country Link
US (1) US2793590A (fr)
BE (1) BE518095A (fr)
CH (1) CH299402A (fr)
DE (1) DE915788C (fr)
FR (1) FR1072919A (fr)
GB (1) GB724967A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2941470A (en) * 1955-03-02 1960-06-21 Brandt Soc Nouv Ets Self-propelled projectile
US3092025A (en) * 1960-08-11 1963-06-04 Dow Chemical Co Detonating device
US3638571A (en) * 1967-09-06 1972-02-01 Dynamit Nobel Ag Recoilless practice cartridge
US4539911A (en) * 1979-06-20 1985-09-10 The United States Of America As Represented By The Secretary Of The Army Projectile
US4553482A (en) * 1980-12-20 1985-11-19 Diehl Gmbh & Co. Practice projectile
US5259319A (en) * 1992-03-20 1993-11-09 Richard Dravecky Reusable training ammunition
EP1674817A1 (fr) * 2004-12-22 2006-06-28 Rheinmetall Waffe Munition GmbH Cartouche

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1039410B (de) * 1955-11-29 1958-09-18 Bo Sca Ri Bonifacica Mine Scar Zweiteiliger UEbungskopf aus Kunstharzpressmasse fuer Tankabwehrgeschosse
FR2542442B1 (fr) * 1983-03-11 1987-01-30 Luchaire Sa Munition d'instruction pour materiel d'artillerie
WO1990007094A1 (fr) * 1988-12-14 1990-06-28 Commonwealth Of Australia Projectile a expulsion
DE102015117003A1 (de) * 2015-10-06 2017-04-06 Rheinmetall Waffe Munition Gmbh Geschoss mit reduzierter Reichweite

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1292388A (en) * 1917-04-14 1919-01-21 Bowers Arms And Munitions Company Tubular projectile.
US2246429A (en) * 1936-03-30 1941-06-17 Sageb Sa Projectile

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE717471C (de) * 1939-12-14 1942-02-14 Krupp Ag Leicht zerlegbares UEbungsgeschoss

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1292388A (en) * 1917-04-14 1919-01-21 Bowers Arms And Munitions Company Tubular projectile.
US2246429A (en) * 1936-03-30 1941-06-17 Sageb Sa Projectile

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2941470A (en) * 1955-03-02 1960-06-21 Brandt Soc Nouv Ets Self-propelled projectile
US3092025A (en) * 1960-08-11 1963-06-04 Dow Chemical Co Detonating device
US3638571A (en) * 1967-09-06 1972-02-01 Dynamit Nobel Ag Recoilless practice cartridge
US4539911A (en) * 1979-06-20 1985-09-10 The United States Of America As Represented By The Secretary Of The Army Projectile
US4553482A (en) * 1980-12-20 1985-11-19 Diehl Gmbh & Co. Practice projectile
US5259319A (en) * 1992-03-20 1993-11-09 Richard Dravecky Reusable training ammunition
EP1674817A1 (fr) * 2004-12-22 2006-06-28 Rheinmetall Waffe Munition GmbH Cartouche

Also Published As

Publication number Publication date
FR1072919A (fr) 1954-09-16
CH299402A (fr) 1954-06-15
GB724967A (en) 1955-02-23
DE915788C (de) 1954-07-29
BE518095A (fr)

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