US20080006167A1 - Blast effect charge - Google Patents

Blast effect charge Download PDF

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Publication number
US20080006167A1
US20080006167A1 US11/770,800 US77080007A US2008006167A1 US 20080006167 A1 US20080006167 A1 US 20080006167A1 US 77080007 A US77080007 A US 77080007A US 2008006167 A1 US2008006167 A1 US 2008006167A1
Authority
US
United States
Prior art keywords
blast effect
effect charge
explosive
binding agent
red phosphorous
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.)
Abandoned
Application number
US11/770,800
Inventor
Ernst-Christian Koch
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.)
Diehl BGT Defence GmbH and Co KG
International Business Machines Corp
Original Assignee
Diehl BGT Defence GmbH and Co KG
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 Diehl BGT Defence GmbH and Co KG filed Critical Diehl BGT Defence GmbH and Co KG
Assigned to INTERNATIONAL BUSINESS MACHINES CORPORATION reassignment INTERNATIONAL BUSINESS MACHINES CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KOCH, ERNST-CHRISTIAN
Assigned to DIEHL BGT DEFENCE GMBH & CO., KG reassignment DIEHL BGT DEFENCE GMBH & CO., KG CORRECTIVE ASSIGNMENT TO CORRECT THE THE RECEIVING PARTY DATA SHOULD READ: DIEHL BGT DEFENCE GMBH & CO., KG, ALTE NUSSDORFER STR. 13 D-88662 UBERLINGEN, GERMANY PREVIOUSLY RECORDED ON REEL 019497 FRAME 0197. ASSIGNOR(S) HEREBY CONFIRMS THE ON THE ORIGINALLY FILED ASSIGNMENT DOCUMENT, THE RECEIVING DATA IS CORRECT.. Assignors: KOCH, ERNST-CHRISTIAN
Publication of US20080006167A1 publication Critical patent/US20080006167A1/en
Abandoned legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B39/00—Compositions containing free phosphorus or a binary compound of phosphorus, except with oxygen
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C06B21/0033—Shaping the mixture
    • C06B21/005—By a process involving melting at least part of the ingredients
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B25/00—Compositions containing a nitrated organic compound
    • C06B25/34—Compositions containing a nitrated organic compound the compound being a nitrated acyclic, alicyclic or heterocyclic amine

Definitions

  • the present invention relates to a high-explosive blast effect charge.
  • HE blast effect charges are typically composed of mixtures of explosives with metallic fuels such as boron, silicon, aluminium, titanium, zirconium, magnesium or mixtures, metal-rich compounds, or alloys of these metals.
  • One object of the present invention is therefore to provide a high-explosive blast effect charge which avoids the abovementioned problems with conventional blast effect charges.
  • One particular aim is to produce a higher performance blast effect charge, that is to say faster combustion, which is as complete as possible, in enclosed areas.
  • the blast effect charge proposed according to the present invention is composed of red phosphorous or a compound containing red phosphorous, an explosive and a binding agent.
  • the blast effect charge is thus highly explosive, burns more quickly and completely than conventional blast effect charges based on metal, and thus achieves a very high pressure volume work.
  • the binding agent for the blast effect charge can optionally be an inert binding agent or an explosive, such as TNT or TATB.
  • the molecular P/O ratio of the blast effect charge may be either ⁇ 2/5 or else ⁇ 2/5.
  • the present invention solves the problems described in the introduction of conventional blast effect charges based on metal, by the use of red phosphorous.
  • red phosphorous When red phosphorous is ignited at atmospheric pressure, then it burns slowly in the region of 0.1 mm/s. Oxygen-unbalanced pyrotechnic charges based on red phosphorous in contrast produce combustion rates of 1/2 mm/s. When charges such as these are enclosed, the combustion after ignition is even explosive.
  • Mixtures comprising the system octogen (explosive with the overall formula C 4 H 8 N 8 O 8 , cyclotetramethylene tetranitramine, also referred to as Homocyclonite or HMX (High Melting Explosive)/hydroxyl-terminated polybutadiene (HTPB, use as a fuel and a binding agent) and red phosphorous (RP) produce detonation rates which are higher than those of pure HMX.
  • HMX High Melting Explosive
  • HTPB hydroxyl-terminated polybutadiene
  • RP red phosphorous
  • an explosive such as TNT or TATB can also be used as the binding agent, instead of the non-explosive HTPB, which is difficult to ignite.
  • the molecular P/O ratio of the blast effect charge may be not only ⁇ 2/5 but also ⁇ 2/5, depending on its composition.
  • red phosphorous or of compounds containing red phosphorous in the blast effect charge according to the invention results in a high pressure exponent n in Dahlle's Law as mentioned initially, which results in faster combustion in enclosed areas.
  • the resultant oxide is in this case highly volatile (for example from about 250° C.), which leads to a complete, or at least virtually complete, reaction of the effect charge, while at the same time making a contribution to the pressure-volume work.
  • the blast effect charge also requires a smaller proportion of expensive nitramines such as HMX and the like than conventional systems.

Abstract

A high-explosive blast effect charge of high performance composed of red phosphorous, an explosive and a binding agent.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to a high-explosive blast effect charge.
  • Conventional high-explosive (HE) blast effect charges are typically composed of mixtures of explosives with metallic fuels such as boron, silicon, aluminium, titanium, zirconium, magnesium or mixtures, metal-rich compounds, or alloys of these metals.
  • 2. Discussion of the Prior Art
  • One inherent disadvantage of the use of metals in binary and uniform charges of this type is the fact that the combustion of metal particles is in general influenced only insignificantly by the atmospheric pressure. This means that the pressure exponent n in Vielle's Law r=a.pn is only very small. Furthermore, metals in principle suffer from the defect that the oxide layers which adhere to them prevent rapid combustion. In particular, boron, which is calorifically so advantageous, with a volume-related combustion enthalpy of 138 MJ/dm3 is not completely involved in a reaction owing to the inherent B2O3 layer, irrespective of whether this is in the detonation reaction zone or during subsequent combustion.
  • The problems of conventional blast effect charges based on metal are therefore:
  • a small pressure exponent n of the metals used and thus scarcely any increase in the combustion rate in enclosed areas, and
  • incomplete reaction of the metals as a result of oxide layers.
    • SUMMARY OF THE INVENTION
  • One object of the present invention is therefore to provide a high-explosive blast effect charge which avoids the abovementioned problems with conventional blast effect charges. One particular aim is to produce a higher performance blast effect charge, that is to say faster combustion, which is as complete as possible, in enclosed areas.
  • The blast effect charge proposed according to the present invention is composed of red phosphorous or a compound containing red phosphorous, an explosive and a binding agent.
  • The advantages of a blast effect charge such as this containing red phosphorous are, in particular,
  • a high pressure exponent n and thus faster combustion in enclosed areas, and
  • high volatility of the resultant oxide, and thus a contribution to the pressure volume work.
  • The blast effect charge is thus highly explosive, burns more quickly and completely than conventional blast effect charges based on metal, and thus achieves a very high pressure volume work.
  • The binding agent for the blast effect charge can optionally be an inert binding agent or an explosive, such as TNT or TATB.
  • The molecular P/O ratio of the blast effect charge may be either ≦2/5 or else ≧2/5.
    • DETAILED DESCRIPTION OF THE INVENTION
  • The above and further features and advantages of the invention will be understood better from the following description of one preferred, non-restrictive, exemplary embodiment.
  • The present invention solves the problems described in the introduction of conventional blast effect charges based on metal, by the use of red phosphorous.
  • When red phosphorous is ignited at atmospheric pressure, then it burns slowly in the region of 0.1 mm/s. Oxygen-unbalanced pyrotechnic charges based on red phosphorous in contrast produce combustion rates of 1/2 mm/s. When charges such as these are enclosed, the combustion after ignition is even explosive.
  • Mixtures comprising the system octogen (explosive with the overall formula C4H8N8O8, cyclotetramethylene tetranitramine, also referred to as Homocyclonite or HMX (High Melting Explosive)/hydroxyl-terminated polybutadiene (HTPB, use as a fuel and a binding agent) and red phosphorous (RP) produce detonation rates which are higher than those of pure HMX. Thus, for example, the ternary system HMX/HTPB/RP with a mixture ratio of 68/12/20 produces a detonation rate of approximately 11 100 m/s and a Chapman-Jouget pressure of not less than 55 GPa.
  • However, the invention is of course not just restricted to blast effect charges using the above ternary system HMX/HTPB/RP.
  • For example, an explosive such as TNT or TATB can also be used as the binding agent, instead of the non-explosive HTPB, which is difficult to ignite.
  • Furthermore, the molecular P/O ratio of the blast effect charge may be not only ≦2/5 but also ≧2/5, depending on its composition.
  • The use of red phosphorous or of compounds containing red phosphorous in the blast effect charge according to the invention results in a high pressure exponent n in Vielle's Law as mentioned initially, which results in faster combustion in enclosed areas. Furthermore, the resultant oxide is in this case highly volatile (for example from about 250° C.), which leads to a complete, or at least virtually complete, reaction of the effect charge, while at the same time making a contribution to the pressure-volume work. As is evident from the above description, the blast effect charge also requires a smaller proportion of expensive nitramines such as HMX and the like than conventional systems.

Claims (5)

1. Blast effect charge, composed of red phosphorous or a compound containing red phosphorous, an explosive and a binding agent.
2. Blast effect charge according to claim 1, wherein the binding agent is an inert binding agent.
3. Blast effect charge according to claim 1, wherein the binding agent is an explosive.
4. Blast effect charge according to any one of claims 1 to 3, wherein the molecular P/O ratio of the effect charge is at most 2/5.
5. Blast effect charge according to any one of claims 1 to 3, wherein the molecular P/O ratio of the effect charge is at least 2/5.
US11/770,800 2006-07-04 2007-06-29 Blast effect charge Abandoned US20080006167A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006030678.3 2006-07-04
DE102006030678A DE102006030678B4 (en) 2006-07-04 2006-07-04 explosive charge

Publications (1)

Publication Number Publication Date
US20080006167A1 true US20080006167A1 (en) 2008-01-10

Family

ID=38331717

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/770,800 Abandoned US20080006167A1 (en) 2006-07-04 2007-06-29 Blast effect charge

Country Status (5)

Country Link
US (1) US20080006167A1 (en)
EP (1) EP1876160B1 (en)
DE (2) DE102006030678B4 (en)
NO (1) NO20073027L (en)
ZA (1) ZA200705369B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2479821C2 (en) * 2010-11-23 2013-04-20 Федеральное государственное унитарное предприятие "Российский федеральный ядерный центр - Всероссийский научно-исследовательский институт технической физики имени академика Е.И. Забабахина" Apparatus for forming compact element

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008036649A1 (en) 2008-08-06 2010-02-18 Diehl Bgt Defence Gmbh & Co. Kg Active agent for selectively causing detonation or deflagration
DE102010005923B4 (en) 2009-12-23 2016-03-24 Diehl Bgt Defence Gmbh & Co. Kg Pressable insensitive explosive mixture
DE102010022982B3 (en) 2010-06-08 2013-09-26 Rheinmetall Waffe Munition Gmbh Pressure-increasing explosive charge and ammunition containing this charge
DE102010022983A1 (en) 2010-06-08 2011-12-08 Rheinmetall Waffe Munition Gmbh Two-shell explosive charge
DE102018113345B4 (en) * 2018-06-05 2021-12-23 Rheinmetall Waffe Munition Gmbh Explosives formulation

Citations (13)

* Cited by examiner, † Cited by third party
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US2970900A (en) * 1949-06-24 1961-02-07 Olin Mathieson Priming composition
US3733224A (en) * 1972-08-24 1973-05-15 G Floyd Explosive composition containing phosphorus and particulate coffee
US3786751A (en) * 1972-02-15 1974-01-22 Us Army Pressure sensitive mine insensitive to water deactivation
US3904451A (en) * 1973-11-28 1975-09-09 Westinghouse Electric Corp Method for preparing primer for percussion-ignitable flash lamp
US4361450A (en) * 1975-06-02 1982-11-30 Thiokol Corporation Plastic bonded explosive compositions
US5352829A (en) * 1993-04-02 1994-10-04 The United States Of America As Represented By The Secretary Of The Navy Spiro(N,N'-dinitroethylenediamino)cyclotriphosphazenes
US20040112487A1 (en) * 2002-05-15 2004-06-17 Miskelly Hermann L. Solid propellant formulations and methods and devices employing the same for the destruction of airborne biological and/or chemical agents
US20040216822A1 (en) * 2001-07-03 2004-11-04 Heinz Hofmann Process for the production of a pressed insensitive explosive mixture
US20050230019A1 (en) * 1999-12-22 2005-10-20 Doll Daniel W Reduced sensitivity melt-cast explosives
US6969434B1 (en) * 2002-12-23 2005-11-29 The United States Of America As Represented By The Secretary Of The Navy Castable thermobaric explosive formulations
US20060060273A1 (en) * 2004-05-06 2006-03-23 Kjell-Tore Smith Pressable explosive composition
US20060225599A1 (en) * 2004-11-22 2006-10-12 Giat Industries Piece of ammunition or ammunition component comprising a structural energetic material
US20080099112A1 (en) * 2001-06-27 2008-05-01 Doll Daniel W Reduced sensitivity melt-pourable Tritonal replacements

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT172937B (en) * 1948-06-26 1952-10-25 August Dipl Ing Nuhsbaum Detonator
CH317908A (en) * 1951-07-12 1956-12-15 Hispano Suiza S A Tanger Process for the manufacture of explosive devices
DE1122424B (en) * 1960-12-09 1962-01-18 Olin Mathieson Ignition mixture
WO2004069771A1 (en) * 2003-02-05 2004-08-19 Metlite Alloys Gauteng (Pty) Ltd. Explosive composition
FR2868774B1 (en) * 2004-04-07 2007-01-12 Giat Ind Sa EXPLOSIVE COMPOSITION

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2970900A (en) * 1949-06-24 1961-02-07 Olin Mathieson Priming composition
US3786751A (en) * 1972-02-15 1974-01-22 Us Army Pressure sensitive mine insensitive to water deactivation
US3733224A (en) * 1972-08-24 1973-05-15 G Floyd Explosive composition containing phosphorus and particulate coffee
US3904451A (en) * 1973-11-28 1975-09-09 Westinghouse Electric Corp Method for preparing primer for percussion-ignitable flash lamp
US4361450A (en) * 1975-06-02 1982-11-30 Thiokol Corporation Plastic bonded explosive compositions
US5352829A (en) * 1993-04-02 1994-10-04 The United States Of America As Represented By The Secretary Of The Navy Spiro(N,N'-dinitroethylenediamino)cyclotriphosphazenes
US20050230019A1 (en) * 1999-12-22 2005-10-20 Doll Daniel W Reduced sensitivity melt-cast explosives
US20080099112A1 (en) * 2001-06-27 2008-05-01 Doll Daniel W Reduced sensitivity melt-pourable Tritonal replacements
US20040216822A1 (en) * 2001-07-03 2004-11-04 Heinz Hofmann Process for the production of a pressed insensitive explosive mixture
US20040112487A1 (en) * 2002-05-15 2004-06-17 Miskelly Hermann L. Solid propellant formulations and methods and devices employing the same for the destruction of airborne biological and/or chemical agents
US6969434B1 (en) * 2002-12-23 2005-11-29 The United States Of America As Represented By The Secretary Of The Navy Castable thermobaric explosive formulations
US20060060273A1 (en) * 2004-05-06 2006-03-23 Kjell-Tore Smith Pressable explosive composition
US20060225599A1 (en) * 2004-11-22 2006-10-12 Giat Industries Piece of ammunition or ammunition component comprising a structural energetic material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2479821C2 (en) * 2010-11-23 2013-04-20 Федеральное государственное унитарное предприятие "Российский федеральный ядерный центр - Всероссийский научно-исследовательский институт технической физики имени академика Е.И. Забабахина" Apparatus for forming compact element

Also Published As

Publication number Publication date
EP1876160A1 (en) 2008-01-09
DE102006030678A1 (en) 2008-01-10
DE102006030678B4 (en) 2009-05-14
ZA200705369B (en) 2008-08-27
NO20073027L (en) 2008-01-07
EP1876160B1 (en) 2009-09-30
DE502007001607D1 (en) 2009-11-12

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Legal Events

Date Code Title Description
AS Assignment

Owner name: INTERNATIONAL BUSINESS MACHINES CORPORATION, NEW Y

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KOCH, ERNST-CHRISTIAN;REEL/FRAME:019497/0197

Effective date: 20070614

AS Assignment

Owner name: DIEHL BGT DEFENCE GMBH & CO., KG, GERMANY

Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE THE RECEIVING PARTY DATA SHOULD READ;ASSIGNOR:KOCH, ERNST-CHRISTIAN;REEL/FRAME:019504/0337

Effective date: 20070614

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION