Propellant charge and cannon shell therewith
View Patent ↗A propellant mechanism for launching a projectile comprises a propellant with a detonation point at which said propellant is initially detonated which is at one end in a forward direction closest to said projectile, such that the detonation proceeds through the propellant in a backwards direction away from the projectile. A reflecting surface is provided away from said projectile for reflecting the detonation into the forward direction towards the projectile.
1 . A propellant mechanism for launching a projectile comprising:
a casing, the casing having a body and a hollow in said body;
a forward direction and a first end of said casing towards said projectile and a backwards direction and a second end of said casing away from said projectile;
a propellant with a detonation point, the detonation point comprising a detonator, at which detonation point said propellant is initially detonated which is at said first end in said forward direction closest to said projectile, such that the detonation proceeds through the propellant in the backwards direction away from said projectile; and
a reflecting surface mounted in said hollow towards said second end of said casing away from said projectile for reflecting said detonation into said forward direction towards said projectile, wherein said reflecting surface comprises a plurality of cavities, said cavities pointing towards said detonation point.
2 . The propellant mechanism of claim 1 , wherein said reflecting surface is shaped to focus said detonation towards said projectile.
3 . The propellant mechanism of claim 2 , wherein said plurality of cavities are configured in one of a predefined plurality of cavity configurations.
4 . The propellant mechanism of claim 3 , wherein the cavities are lined with one member of the group consisting of a structural material and a filler material.
5 . The propellant mechanism of claim 1 , wherein the cavities are cones, each having an apex and a longitudinal axis extending through said apex, said longitudinal axes extending through respective apexes of the cones and meeting at said detonation point.
6 . The propellant mechanism of claim 1 , wherein said casing is configured to cause preferential pressure discharge in the forward direction.
7 . The propellant mechanism of claim 6 , wherein said casing comprises a plate on a side towards said projectile, or wherein said casing is attached to said projectile, or wherein said casing is detached from said projectile.
8 . A projectile with a propellant mechanism for launching the projectile, the projectile and propellant mechanism comprising:
a casing, the casing having a body and a hollow in said body;
a forward direction and a first end of said casing in a launch direction and a backwards direction and a second end of said casing away from said launch direction;
a propellant with a detonation point, the detonation point comprising a detonator, at which detonation point said propellant is initially detonated, said detonation point being at said first end, such that the detonation proceeds through the propellant in the backwards direction away from said projectile; and
a reflecting surface mounted in said hollow towards said second end of said casing away from said projectile for reflecting said detonation into said forward direction towards said projectile, wherein said reflecting surface comprises a plurality of cavities, said cavities pointing towards said detonation point.
9 . The projectile and propellant mechanism of claim 8 , wherein said reflecting surface is shaped to focus said detonation towards said projectile.
10 . The projectile and propellant mechanism of claim 9 , wherein said cavities are configured in one of a predefined plurality of cavity configurations.
11 . The projectile and propellant mechanism of claim 10 ,
wherein the cavities are lined with a structural material.
12 . The projectile and propellant mechanism of claim 10 ,
wherein the cavities are filled with a filler material.
13 . The projectile and propellant mechanism of claim 9 , comprising a plurality of separable projectile parts within said casing.
14 . The projectile and propellant mechanism of claim 8 , wherein the cavities are cones, each having an apex and a longitudinal axis extending through said apex, said longitudinal axes extending through respective apexes of the cones and meeting at said detonation point.
15 . The projectile and propellant mechanism of claim 8 , wherein said casing comprises a plate on a side of said propellant mechanism towards said projectile.
16 . The projectile and propellant mechanism of claim 8 , wherein the cavities are non-uniform.
17 . The projectile and propellant mechanism of claim 16 , wherein at least some of said cavities have a lengthwise axis towards an apex wherein said lengthwise axis towards said apex does not point to said detonation point.