US3732816A - Hollow charge with an insert of progressive or degressive wall - Google Patents

Hollow charge with an insert of progressive or degressive wall Download PDF

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Publication number
US3732816A
US3732816A US00071091A US3732816DA US3732816A US 3732816 A US3732816 A US 3732816A US 00071091 A US00071091 A US 00071091A US 3732816D A US3732816D A US 3732816DA US 3732816 A US3732816 A US 3732816A
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US
United States
Prior art keywords
insert
hollow charge
progressive
degressive
generating lines
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
US00071091A
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English (en)
Inventor
H Muller
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.)
Rheinmetall Industrie AG
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Rheinmetall GmbH
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Filing date
Publication date
Application filed by Rheinmetall GmbH filed Critical Rheinmetall GmbH
Application granted granted Critical
Publication of US3732816A publication Critical patent/US3732816A/en
Anticipated expiration legal-status Critical
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
    • F42B1/02—Shaped or hollow charges
    • F42B1/028—Shaped or hollow charges characterised by the form of the liner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B1/00—Explosive charges characterised by form or shape but not dependent on shape of container
    • F42B1/02—Shaped or hollow charges
    • F42B1/036—Manufacturing processes therefor

Definitions

  • ABSTRACT A hollow charge with an insert of progressive and Sept Germany 19 46 959'] degressive wall thickness, respectively, wherein the in- [52] us Cl 102/24 C sert has at least partly curved generating lines.
  • the present invention relates to hollow charges with circular-symmetrical inserts, the wall thicknesses of which increase progressively or diminish degressively starting from the axis toward the insert base and the outer and inner generating lines of which are completely or also partly curved lines.
  • This type of insert is of particular importance, because by the application of continuously increasing or decreasing insert wall thicknesses and embodiments curved from the apex to the base maximum, stretched and thereby deeply effective hollow charge-radiations and-projectiles, respectively, can be produced.
  • Such inserts are designed, aside of sometimes required constructively caused deviations at the apex point and on the base of the insert, respectively, over the total length and over the main part of the generating lines, respectively, progressive or degressive. They are characterized by the quotient x of the wall thickness extreme values as x-times progressive or degressive.
  • the hollow charges equipped therewith lack often the desired depth effect in the target material, because during the blow-up, the concentration of the insert mass and, thereby, the formation process of a long stretched radiation and projectile, respectively, does not take place without disturbances, as premature tearing of the insert material, tube formation and breakthroughs of detonating products.
  • s is the local insert wall thickness measured normally to the outer generating line
  • n is the index number continuing to the inner limit of the section Ar
  • r is the distance of the considered zone Ar from the insert axis.
  • the local progressivity is now of particular importance for the collapse or forming process of the insert.
  • the larger, for instance, the local progressivity and thereby the difference between the adjacent wall thicknesses s and s,,+l the larger is the difference of the speeds assigned by the demolition'impulse about perpendicularly to the generating line, that means, the faster the particles with the weaker wall thickness rush ahead, so much larger is also the resistance against the buckling of the insert mass inwardly and so much more is the insert material involved by the further floating.
  • one object of the present invention to provide a hollow charge with the insert of progressive or degressive wall wherein during the blow-up of the hollow charge an undisturbed forming process of the projectile is obtained.
  • the present invention starts thereby from the new blow-technical recognition, that for the disturbancefree formation of the hollow charge-radiation or projectile, a x -curve of the local progressively and degressivity, respectively, and of a constant character above the axial distance r and without recognizable buckling, is to be aimed at and the solution of this problem in accordance with the present invention is characterized by the fact, that the oppositely disposed outer and inner generating lines of the insert extending in a section plane through the insert axis have the same line formation, however, are rotated within the section plane relative to each other about an angle.
  • FIG. 1 is a schematic fragmentary section through a hollow charge insert
  • FIG. 2 is a hollow charge with a progressive insert
  • FIGS. 3 and 4 are further inserts with progressive and degressive course of the wall thicknesses, respectively.
  • FIG. 1 serves the explanation of the previously mentioned progressivity formulas.
  • FIGS. 2-4 the course of the outer generating line of the inserts is indicated with A-B and the course of the inner generating line is A'-B.
  • the inner generating lines A B have always the same line course of the corresponding outer generating lines A-B, whereby the line courses are angularly rotated for a small angle, in accordance with the progressivity of the wall thickness.
  • the practical realization of the present invention can take place suitably in such manner, that a gage set for the production of the outer generating lines is rotated for a small angle, whereby the corresponding inner generating line results.
  • said insert having inner and outer surfaces comprising at least partly curved oppositely disposed inner and outer generating lines within a sectional plane
  • said oppositely disposed inner and outer generating lines of said insert being the same, yet rotatably dis- 3 4 placed relative to each other by a predetermined and angle within said f l said oppositely disposed inner and outer generating 1:: hollow charge wlth an Insert of degresswe wan lines of said insert being the same, yet rotatably dis- 1C ess, i said insert having inner and outer surfaces compris- 5 placed f f eac h other by a predetermmed ing at least partly curved oppositely disposed inner angle Wlthm Said Secuonal P and outer generating lines within a sectional plane,

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Toys (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Earth Drilling (AREA)
US00071091A 1969-09-17 1970-09-10 Hollow charge with an insert of progressive or degressive wall Expired - Lifetime US3732816A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1946959A DE1946959C3 (de) 1969-09-17 1969-09-17 Hohlladung mit Einlage progressiver oder degressiver Wandstärke

Publications (1)

Publication Number Publication Date
US3732816A true US3732816A (en) 1973-05-15

Family

ID=5745686

Family Applications (1)

Application Number Title Priority Date Filing Date
US00071091A Expired - Lifetime US3732816A (en) 1969-09-17 1970-09-10 Hollow charge with an insert of progressive or degressive wall

Country Status (6)

Country Link
US (1) US3732816A (fr)
BE (1) BE754477A (fr)
DE (1) DE1946959C3 (fr)
FR (1) FR2061472A5 (fr)
GB (1) GB1328233A (fr)
SE (1) SE402817B (fr)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4327642A (en) * 1979-02-03 1982-05-04 Diehl Gmbh & Co. Inserts for cutting charges
US4499830A (en) * 1981-06-29 1985-02-19 The United States Of America As Represented By The Secretary Of The Army High lethality warheads
US4510870A (en) * 1981-07-27 1985-04-16 The United States Of America As Represented By The Secretary Of The Army Charge liner construction and method
US4537132A (en) * 1977-06-30 1985-08-27 Rheinmetall Gmbh Hollow-charge insert for armor-piercing projectile
US4590861A (en) * 1983-05-13 1986-05-27 Diehl Gmbh & Co. Insert for a projectile-forming charge
US4594947A (en) * 1983-07-28 1986-06-17 Commissariat A L'energie Atomique Apparatus for shaping a detonation wave
US4672896A (en) * 1984-08-21 1987-06-16 Societe D'etudes, De Realisations Et D'applications Techniques Hollow charges
US4724767A (en) * 1986-04-24 1988-02-16 Schlumberger Technology Corporation Shaped charge apparatus and method
US4979443A (en) * 1987-07-03 1990-12-25 Rheinmetall Gmbh Liner for a warhead with protruding central portion
US5033387A (en) * 1981-11-07 1991-07-23 Rheinmetall Gmbh Explosive charge facing
US5320044A (en) * 1985-06-17 1994-06-14 The United States Of America As Represented By The Secretary Of The Army Three radii shaped charge liner
US5522319A (en) * 1994-07-05 1996-06-04 The United States Of America As Represented By The United States Department Of Energy Free form hemispherical shaped charge
US5559304A (en) * 1985-08-16 1996-09-24 Rheinmetall Gmbh Insert for a warhead
US6349649B1 (en) * 1998-09-14 2002-02-26 Schlumberger Technology Corp. Perforating devices for use in wells
US6910421B1 (en) * 1992-12-08 2005-06-28 Bae Systems Plc General purpose bombs
US20070214991A1 (en) * 2003-06-04 2007-09-20 Bofors Defence Ab Device Adjacent to an Explosive Charge with at Least Two Liners
US20100319562A1 (en) * 2009-06-23 2010-12-23 Schlumberger Technology Corporation Shaped charge liner with varying thickness
RU2451261C1 (ru) * 2010-12-27 2012-05-20 Николай Евгеньевич Староверов Кумулятивный заряд староверова-2
US10683735B1 (en) * 2019-05-01 2020-06-16 The United States Of America As Represented By The Secretary Of The Navy Particulate-filled adaptive capsule (PAC) charge

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2410244A1 (fr) * 1977-11-25 1979-06-22 Serat Perfectionnements aux charges creuses
FR2488389B1 (fr) * 1980-08-06 1986-04-25 Serat Perfectionnements aux charges creuses
FR2523294B1 (fr) * 1982-03-10 1986-12-26 Serat Perfectionnements apportes aux charges creuses
NO862508L (no) * 1985-12-12 1987-06-15 Israel Defence Bombe med formet eller hul ladning.
DE3808052C1 (de) * 1988-03-11 1999-07-08 Diehl Stiftung & Co Projektilbildende Einlage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2974595A (en) * 1947-09-11 1961-03-14 Welex Inc Projectile
FR1327804A (fr) * 1962-04-09 1963-05-24 Soc Tech De Rech Ind Perfectionnements aux revêtements pour charges creuses
US3103882A (en) * 1949-01-15 1963-09-17 William L Gilliland Explosive cartridges and explosives
US3437036A (en) * 1966-04-20 1969-04-08 Diehl Hollow charge for land mines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2974595A (en) * 1947-09-11 1961-03-14 Welex Inc Projectile
US3103882A (en) * 1949-01-15 1963-09-17 William L Gilliland Explosive cartridges and explosives
FR1327804A (fr) * 1962-04-09 1963-05-24 Soc Tech De Rech Ind Perfectionnements aux revêtements pour charges creuses
US3437036A (en) * 1966-04-20 1969-04-08 Diehl Hollow charge for land mines

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4537132A (en) * 1977-06-30 1985-08-27 Rheinmetall Gmbh Hollow-charge insert for armor-piercing projectile
US4327642A (en) * 1979-02-03 1982-05-04 Diehl Gmbh & Co. Inserts for cutting charges
US4499830A (en) * 1981-06-29 1985-02-19 The United States Of America As Represented By The Secretary Of The Army High lethality warheads
US4510870A (en) * 1981-07-27 1985-04-16 The United States Of America As Represented By The Secretary Of The Army Charge liner construction and method
US5033387A (en) * 1981-11-07 1991-07-23 Rheinmetall Gmbh Explosive charge facing
US4590861A (en) * 1983-05-13 1986-05-27 Diehl Gmbh & Co. Insert for a projectile-forming charge
US4594947A (en) * 1983-07-28 1986-06-17 Commissariat A L'energie Atomique Apparatus for shaping a detonation wave
US4672896A (en) * 1984-08-21 1987-06-16 Societe D'etudes, De Realisations Et D'applications Techniques Hollow charges
US5320044A (en) * 1985-06-17 1994-06-14 The United States Of America As Represented By The Secretary Of The Army Three radii shaped charge liner
US5559304A (en) * 1985-08-16 1996-09-24 Rheinmetall Gmbh Insert for a warhead
US4724767A (en) * 1986-04-24 1988-02-16 Schlumberger Technology Corporation Shaped charge apparatus and method
US4979443A (en) * 1987-07-03 1990-12-25 Rheinmetall Gmbh Liner for a warhead with protruding central portion
US6910421B1 (en) * 1992-12-08 2005-06-28 Bae Systems Plc General purpose bombs
US5522319A (en) * 1994-07-05 1996-06-04 The United States Of America As Represented By The United States Department Of Energy Free form hemispherical shaped charge
US6349649B1 (en) * 1998-09-14 2002-02-26 Schlumberger Technology Corp. Perforating devices for use in wells
US20070214991A1 (en) * 2003-06-04 2007-09-20 Bofors Defence Ab Device Adjacent to an Explosive Charge with at Least Two Liners
US7739955B2 (en) * 2003-06-04 2010-06-22 Bae Systems Bofors Ab Device adjacent to an explosive charge with at least two liners
US20100319562A1 (en) * 2009-06-23 2010-12-23 Schlumberger Technology Corporation Shaped charge liner with varying thickness
US8166882B2 (en) * 2009-06-23 2012-05-01 Schlumberger Technology Corporation Shaped charge liner with varying thickness
RU2451261C1 (ru) * 2010-12-27 2012-05-20 Николай Евгеньевич Староверов Кумулятивный заряд староверова-2
US10683735B1 (en) * 2019-05-01 2020-06-16 The United States Of America As Represented By The Secretary Of The Navy Particulate-filled adaptive capsule (PAC) charge

Also Published As

Publication number Publication date
DE1946959C3 (de) 1974-01-10
SE402817B (sv) 1978-07-17
BE754477A (fr) 1971-01-18
DE1946959B2 (de) 1973-06-14
FR2061472A5 (fr) 1971-06-18
GB1328233A (en) 1973-08-30
DE1946959A1 (de) 1971-03-25

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