Cartridge with rapidly increasing sequential ignitions for guns and ordnances
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F42B-005/26
F42B-005/16
출원번호
US-0857814
(2013-04-05)
등록번호
US-9182201
(2015-11-10)
발명자
/ 주소
Coffman, II, Charles W.
출원인 / 주소
Coffman, II, Charles W.
인용정보
피인용 횟수 :
0인용 특허 :
4
초록▼
A cartridge may be loaded with a powder column containing stratified, stacked layers of propellant, each powder layer over-compressed to a specified degree, with the burn rate controlled by the specified degree of over-compression applied to each respective powder layer. The application of a highly
A cartridge may be loaded with a powder column containing stratified, stacked layers of propellant, each powder layer over-compressed to a specified degree, with the burn rate controlled by the specified degree of over-compression applied to each respective powder layer. The application of a highly compressed powder column reduces the burn rate, and may force one or more of the powder layers to launch with the projectile down the barrel. Accordingly, the powder column is forced to burn in a manner similar to fuel burning in a solid fuel rocket engine. This greatly reduces the pressure(s) developed in the chamber, and permits the force of the burning powder to be efficiently focused on forward propulsion. The rapidly increasing set of sequential ignitions provides higher and higher energy densities with each subsequent ignition, and creates a more uniform linear acceleration of the projectile for the full length of the target barrel.
대표청구항▼
1. A propellant charge pellet comprising: a propellant column comprising a plurality of stratified stacked layers of propellant, wherein each layer of propellant of the plurality of stratified stacked layers of propellant is compressed to a specified degree,wherein a burn rate of each layer of prope
1. A propellant charge pellet comprising: a propellant column comprising a plurality of stratified stacked layers of propellant, wherein each layer of propellant of the plurality of stratified stacked layers of propellant is compressed to a specified degree,wherein a burn rate of each layer of propellant is controlled by the specified degree of compression applied to each layer of propellant,wherein a burn rate of a first propellant layer of the plurality of stratified layers is slower than a burn rate of a second propellant layer of the plurality of stratified layers, andwherein the first propellant layer is adjacent to the second propellant layer, wherein the first propellant layer of propellant of the stratified stacked layers of propellant has a burn rate corresponding to a maximum chamber pressure of a cartridge. 2. The propellant charge pellet of claim 1, wherein the burn rate of each layer of propellant is further controlled by a specified volume of the layer of propellant. 3. The propellant charge pellet of claim 1, wherein the propellant charge pellet has a square profile at a first end where a top layer of propellant of the stratified stacked layers of propellant is situated, and a round profile at a second end where a bottom layer of propellant of the stratified stacked layers of propellant is situated. 4. The propellant charge pellet of claim 1, wherein adjacent layers of propellant of the stratified stacked layers of propellant are in direct contact with each other. 5. A propellant charge comprising a plurality of propellant layers stratified in a stacked column, wherein each propellant layer of the plurality of propellant layers is compressed to a specified degree,wherein the compression of a first layer of the plurality of stratified layers forms a predetermined shape;wherein a burn rate of each propellant layer is controlled by a specified volume of the propellant layer and the specified degree of compression applied to the propellant layer, andwherein a burn rate of a first layer of the plurality of stratified layers is slower than a burn rate of a second layer of the plurality of stratified layers,wherein the first layer is adjacent to the second layer, and wherein the specified degree of compression applied to a first propellant layer of the plurality of propellant layers results in a burn rate corresponding to a maximum chamber pressure of a cartridge. 6. The propellant charge of claim 5, wherein the first layer of propellant is a booster layer, wherein the specified degree of compression applied to the booster layer results in detonation of the at least one other layer, following detonation of the booster layer during firing of a projectile from the cartridge, to occur after the projectile in is motion. 7. The propellant cartridge of claim 5, wherein the predetermined shape is selected from the group consisting of a square profile or a round profile. 8. A cartridge comprising: a casing;a propellant chamber defined by the casing;a projectile coupled to the casing; anda powder column in the propellant chamber, wherein the powder column comprises a plurality of stratified stacked propellant layers, wherein each propellant layer of the plurality of stratified stacked propellant layers comprises a plurality of grains and is compressed to a specific degree, and wherein at least one propellant layer of the plurality of stratified stacked propellant layers is compressed by at least two grains of the plurality of grains associated with the at least one propellant layer,wherein a burn rate of each propellant layer is controlled by the specified degree of compression applied to the propellant layer,wherein a first layer of propellant of the plurality of stratified layers of propellant is disposed further away from the projectile than subsequent propellant layers and initiates a detonation of at least an adjacent propellant layer, andwherein the first propellant layer comprises a burn rate corresponding to a predetermined chamber pressure of the cartridge. 9. The cartridge of claim 8, wherein the projectile is coupled to the casing above the propellant chamber. 10. The cartridge of claim 9, wherein a top propellant layer of the stratified stacked propellant layers is press fitted into a base cup of the projectile. 11. The cartridge of claim 9, wherein the first propellant layer of the plurality of propellant layers press is fitted at a bottom of the powder column and is a booster layer, wherein the detonation of the at least one adjacent propellant occurs after the projectile in is motion. 12. The cartridge of claim 9, wherein the first propellant layer of the plurality of propellant layers is press fitted at a bottom of the powder column is a booster layer, wherein the specified degree of compression applied to the booster layer results in a volume of the casing increasing prior to detonation of the at least one adjacent propellant layer of the stratified stacked propellant layers following detonation of the booster layer during firing of the projectile. 13. The cartridge of claim 9, wherein during firing of the projectile from the cartridge through a barrel, the powder column is completely burned up by a point in time at which the projectile leaves the barrel. 14. The cartridge of claim 9, wherein the specified degree of compression applied to each propellant layer of the stratified stacked propellant layers results in a rapidly increasing set of sequential ignitions during firing of the projective from the cartridge through a barrel, wherein each successive ignition of the set of sequential ignitions provides a higher energy density, and creates a more uniform linear acceleration of the projectile for a full length of the barrel. 15. The cartridge of claim 8, wherein the burn rate of each propellant layer is further controlled by a specified volume of the propellant layer. 16. The cartridge of claim 8, wherein adjacent propellant layers of the stratified stacked propellant layers are not separated by a hermetic barrier. 17. The cartridge of claim 8, wherein the predetermined chamber pressure of the cartridge is a maximum pressure of the cartridge.
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이 특허에 인용된 특허 (4)
Petrick John T. (Largo FL), Firearm cartridge with pre-pressurizing charge.
O\Meara William L. (Leon FL) Murray Terry A. (Gadsden FL), Method of producing a nitrocellulose propellant containing a cellulosic burn rate modifier infiltrated therein.
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