Abstract
It has been commonly thought that stabilising an out of balance gun on a moving platform (tank or ship) is very difficult or impossible to achieve. Using models of a balanced and out of balance gun on a main battle tank this is shown not to be the case. The models of the guns used, include the effect of non-linear friction and out of balance. To improve the stabilisation of the out of balance gun, trunnion vertical acceleration feedforward is used.
Highlights
The primary objective of the Weapon Control System (WCS) on a Main Battle Tank (MBT) is to maximise the probability of hitting a stationary or moving target with the first round, in the shortest possible time, from a stationary or moving vehicle
If the gun is tipped on its trunnion axis on sloping ground, or, as with tank and naval guns, rocked while travelling, additional mass forces on the center of gravity of the elevating part cause the compensation to be disrupted
This section examines the design of the closed-loop and disturbance feedforward controllers for the balanced and OOB weapon control systems
Summary
The primary objective of the Weapon Control System (WCS) on a Main Battle Tank (MBT) is to maximise the probability of hitting a stationary or moving target with the first round, in the shortest possible time, from a stationary or moving vehicle. If the gun is tipped on its trunnion axis on sloping ground, or, as with tank and naval guns, rocked while travelling, additional mass forces on the center of gravity of the elevating part cause the compensation to be disrupted. For this reason, the naval guns [and presumably tank guns] can not use an equilibrator and must place the center of gravity of the elevating part in the trunnion axis.” [1], and “An equilibrator can only balance an otherwise unbalanced system statically. It will be apparent that, in the dynamic state, acceleration forces act at the
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