Method for electrical flashover ignition and combustion of propellent charge, as well as propellent charge and ammunition shot in accordance therewith
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F42B-005/16
C06D-005/00
C06B-045/18
출원번호
US-0934154
(2009-03-23)
등록번호
US-8607704
(2013-12-17)
우선권정보
SE-0800729 (2008-04-01)
국제출원번호
PCT/SE2009/000151
(2009-03-23)
§371/§102 date
20110406
(20110406)
국제공개번호
WO2009/123528
(2009-10-08)
발명자
/ 주소
Stark, Ola
Gustavsson, Lennart
Dahlberg, Johan
Svanberg, Lars-Peter
출원인 / 주소
BAE Systems Bofors AB
대리인 / 주소
Novak Druce Connolly Bove + Quigg LLP
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
The invention relates to a method of, in the electrical ignition of a propellent charge (1) provided with an electrically conductive surface coating (5) and comprising one or more propellant components (3), ensuring that ignition and progressive combustion of the propellent charge take place. The me
The invention relates to a method of, in the electrical ignition of a propellent charge (1) provided with an electrically conductive surface coating (5) and comprising one or more propellant components (3), ensuring that ignition and progressive combustion of the propellent charge take place. The method is characterized in that said electrically conductive surface coating, when ignition of the propellent charge is desired, is connected to an electrical high-voltage source (6), in that said high-voltage source is made to generate at least one high electrical pulse to said connected electrically conductive surface coating, and in that said at least one high electrical pulse produces an instantaneous flashover ignition of the electrically conductive surface coating of the propellent charge and of all its propellant components, simultaneously. The invention also relates to a propellent charge and to an ammunition shot comprising the propellent charge.
대표청구항▼
1. A method for electrical ignition of a propellant charge provided with an electrically conductive surface coating and comprising one or more propellant components, ensuring that ignition and progressive combustion of the propellant charge takes place, wherein said propellant charge has free burnin
1. A method for electrical ignition of a propellant charge provided with an electrically conductive surface coating and comprising one or more propellant components, ensuring that ignition and progressive combustion of the propellant charge takes place, wherein said propellant charge has free burning channels and at least a majority of free outer burning surfaces of the propellant charge, and inner burning surfaces of burning channels emanating therefrom, are provided with said electrically conductive surface coating prior to the ignition and wherein said method comprises: connecting said electrically conductive surface coating, when ignition of the propellant charge is desired, to an electrical high-voltage source, wherein said high-voltage source generates at least one high electrical pulse to said connected electrically conductive surface coating, and wherein said at least one high electrical pulse produces an instantaneous flashover ignition of the electrically conductive surface coating of the propellant charge and of all its propellant components simultaneously. 2. The method as claimed in claim 1, wherein the propellant components of the propellant charge, in the form of smaller geometric units, are arranged and/or packed together into a desired propellant charge configuration, which propellant components have been multiperforated with burning channels. 3. The method as claimed in claim 2, wherein the propellant components have been multiperforated with burning channels. 4. The method as claimed in claim 1, wherein at least the majority of the free outer burning surfaces of the propellant components incorporated in the propellant charge, and inner burning surfaces of the burning channels emanating therefrom, are provided with said electrically conductive surface coating prior to the make-up into the particular propellant charge and prior to the ignition. 5. The method as claimed in claim 1, wherein the at least one high electrical pulse is so rich in energy that said electrically conductive surface coating is converted. into an ionized plasma. 6. The method as claimed in claim 5, wherein the electrical high-voltage source, which comprises a regulatable pulse unit, is made to deliver a plurality of additional high electrical pulses one after the other, and in that the additional high electrical pulses are supplied to the ionized plasma, so that also the combustion gases which are formed by the chemical combustion of the propellant charge are ionized, whereby a controllable energy level and total energy development suppliable with additional electrical energy are achieved. 7. The method as claimed in claim 1, wherein the energy from said progressive combustion and the at least one supplied high electrical pulse or pulses are utilized for the propulsion of at least one projectile through a barrel. 8. The method as claimed in claim 7, wherein, fo11owing a discharged ammunition shot comprising the projectile, the total pressure in the barrel distributed over time is regulated by means of additional energy pulses which each create new pressure pulses, the pressure variance of which over time is made to mutually overlap in such a way that the total barrel pressure distributed over time is optimized according to a desired pressure development that always falls short of the highest permitted maximum pressure of the barrel. 9. The method as claimed in claim 1, wherein additional electrical energy, which is regulatable in terms of energy, in addition to the chemical energy from the combustion of the propellant charge is supplied to the propulsion via the additional electrical pulses to the ionized plasma, whereby it becomes possible to monitor and control the propulsion of a projectile during the whole or parts of the acceleration through a barrel. 10. The method as claimed in claim 1, wherein the supplied high electrical pulse or pulses is/are given a voltage strength of about 1,000 Volts to about 50,000 Volts, preferably about 7,000 Volts. 11. The method as claimed in claim 1, wherein the supplied high electrical pulse or pulses is/are given a current strength of about 3,000-20,000 Amperes. 12. The method as claimed in claim 1, wherein the electrically conductive surface coating is applied to the whole or parts of the burning surfaces of the propellant charge with any one of the methods: galvanization, plating, chemical steam deposition, sputtering, dipping or painting with electrically conductive paint. 13. The method as claimed in claim 1, wherein the electrically conductive surface coating is applied to the whole or parts of the burning surfaces of the propellant charge as a glue. 14. The method as claimed in claim 1, wherein when the ambient temperature is disadvantageous, this disadvantageous temperature is compensated by increasing or decreasing the supplied electrical energy in accordance therewith. 15. The method as claimed in claim 1, wherein the electrically conductive surface coating is applied to the whole or parts of the burning surfaces of the propellant charge as an epoxy-based conductive copper coating.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (6)
Weise Thomas,DEX ; Haak Hans Karl,DEX, Ammunition cartridge with electric propellant ignition.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.