Propulsion system for the acceleration of projectiles
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
D03D-023/00
D03D-043/00
C06B-031/00
C06B-025/00
출원번호
US-0798878
(2007-05-17)
등록번호
US-8353994
(2013-01-15)
우선권정보
EP-06405217 (2006-05-19)
발명자
/ 주소
Schaedeli, Ulrich
Andres, Hanspeter
Ryf, Kurt
Antenen, Dominik
Vogelsanger, Beat
출원인 / 주소
Nitrochemie Wimmis AG
인용정보
피인용 횟수 :
0인용 특허 :
9
초록▼
The propulsion system for the acceleration of projectiles is based on nitrocellulose and contains a crystalline energy carrier on a nitramine base and an inert plasticizing additive. The nitramine compound contains a structural element of the general chemical structure formula R—N—NO2, where R is a
The propulsion system for the acceleration of projectiles is based on nitrocellulose and contains a crystalline energy carrier on a nitramine base and an inert plasticizing additive. The nitramine compound contains a structural element of the general chemical structure formula R—N—NO2, where R is a residual. The nitramine compound is present in a concentration in the range from 1 to 35% by weight, in particular in the range from 5 to 25% by weight. The nitramine compound is preferably RDX. The inert plasticizing additive is a water-insoluble polyoxo compound, if necessary in combination with a substance containing carboxyl groups. In layers near the surface an increased concentration can be present. The inert plasticizing additive is present in a concentration of 1 to 5% by weight.
대표청구항▼
1. A propulsion system for the acceleration of projectiles that is based on nitrocellulose, characterised in that it contains a crystalline energy carrier on a nitramine base and one or a plurality of inert plasticising additives, wherein at least one of the inert plasticising additives is homogeneo
1. A propulsion system for the acceleration of projectiles that is based on nitrocellulose, characterised in that it contains a crystalline energy carrier on a nitramine base and one or a plurality of inert plasticising additives, wherein at least one of the inert plasticising additives is homogeneously distributed in a matrix of the propulsion system, and another inert plasticising additive has an increased concentration in zones near the surface to a maximum penetration depth of 400 microns. 2. The propulsion system according to claim 1, characterised in that it consists of grains that have a circular cylindrical geometry and lengthwise passages running in the axial direction. 3. The propulsion system according to claim 1, characterised in that the crystalline energy carrier on the nitramine base contains a nitramine compound of the general chemical structural formula R—N—NO2, where R is a residual. 4. The propulsion system according to claim 3, characterised in that the nitramine compound is present in a concentration in the range from 1 to 35% by weight. 5. The propulsion system according to claim 3, characterised in that the nitramine compound is RDX. 6. The propulsion system according to claim 1, characterised in that the inert plasticising additive homogeneously distributed in the matrix of the propulsion system has a concentration in the range from 0.5 to 20% by weight. 7. The propulsion system according to claim 1, characterised in that the inert plasticising additive homogeneously distributed in the matrix of the propulsion system is an essentially water-insoluble organic polyoxo compound, in particular a polyester or a polyether compound with a molecular weight of 50 to 20,000 g/mol. 8. The propulsion system according to claim 7, characterised in that the inert plasticising additive homogeneously distributed in the matrix of the propulsion system contains a water-insoluble citrate ester, an adipic acid ester, a sebacic acid ester or a phtalic acid ester and/or hydrated cyclohexyl derivates of these with a molecular weight of 100 to 20,000 g/mol. 9. The propulsion system according to claim 1, characterised in that the inert plasticising additive with an increased concentration in the zones near the surface has a weight proportion in the total grain of not more than 10% by weight. 10. The propulsion system according to claim 1, characterised in that the inert plasticising additives are organic compounds containing carboxyl groups, with a molecular weight of 100-5000 g/mol. 11. The propulsion system according to claim 10, characterised in that the inert plasticising additive with an increased concentration in the zones near the surface is essentially camphor. 12. The propulsion system according to claim 1, characterised in that it consists of grains with a maximum geometric dimension of 20 mm. 13. A propulsion system according to claim 1, characterized in that the inert plasticising additive homogeneously distributed in the matrix of the propulsion system is a phthalic acid ester formed from 1,2-benzenedicarboxylic acid and two alcohols with 1-11 carbon atoms. 14. A propulsion system according to claim 1, characterised in that it contains RDX and that the inert plasticizing additive homogeneously distributed in the matrix of the propulsion system is a phthalic acid ester formed from 1,2-benzenedicarboxylic acid and two alcohols with 1-11 carbon atoms. 15. The propulsion system according to claim 2, characterized in that the crystalline energy carrier on the nitramine base contains a nitramine compound of the general chemical structural formula R—N—NO2, where R is a residual. 16. The propulsion system according to claim 4, characterised in that the nitramine compound is RDX.
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이 특허에 인용된 특허 (9)
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Lovelace ; Alan M. Acting Administrator of the National Aeronautic s and ; Space Administration ; with respect to an invention of ; Coh en ; Norman S. ; Strand ; Leon D., Nitramine propellants.
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