Projectile system including a projectile mount and a projectile

摘要

A projectile and a projectile mount having a central bore into which the projectile is mounted and includes rotational formations functionally engaging between the projectile and the projectile mount which in use provides rotational motion to the projectile around an axis of rotation by the propulsion of the projectile along the axis of rotation.

主权项

1. A projectile system comprising:
a reusable projectile mount having a central helical bore with a bore diameter; and a projectile including:
an elongate body having a maximum diameter which corresponds substantially to the bore diameter of the projectile mount, and the projectile mount and the projectile having loose complementary interfitting thread bearing areas forming a rotational formation,a front portion of the projectile forming an aerodynamic front, anda rear portion of the projectile having a substantially cylindrical rear portion which includes at least a first part of the rotational formation having part of the loose complementary interfitting thread bearing areas that engages with a second part of the rotational formation on the projectile mount having another part of the loose complementary interfitting thread bearing areas to provide rotational motion around an axis of rotation to the projectile as the projectile is propelled along the axis of rotation; wherein minimal spacing provides functional engaging of the projectile and projectile mount portions which are relatively sized to allow a build-up of pressure behind the projectile and gaseous leakage flow between the projectile and projectile mount portions to form a gaseous bearing; wherein by functional engaging, the projectile and projectile mount portions are connected in a loose fit sufficient so that the rotational formations form a retaining hold of the projectile within the projectile mount but allow propulsion gas to leave the propulsion chamber between the rotational formation portions to provide the gaseous bearing; wherein the interaction of the rotational formation portions of the projectile and projectile mount and the propulsion of the projectile along the axis of rotation engage so as to provide rotational motion around the axis of rotation to the projectile by initiating a vortex rotational motion; wherein the interaction of the rotational formation portions of the projectile and projectile mount include at least partial overlapping with gaseous spacing between the projectile and projectile mount; and wherein the rotational formations form a vortex outlet for explosive energy in the projectile mount behind the projectile to form a gaseous bearing between the projectile and the projectile mount and to impart vortex rotational drive on the projectile to enact explosive expulsion.