Abstract. In the design of Weapon Control Systems (WCS) for main
battle tanks there is a requirement for low-order models of
the elevating mass and barrel. In this work two models
suitable for this requirement are put forward. The two models
under consideration break the barrel down into rigid sections that
are connected by frictionless pin-joints and linked by torsional springs
and dampers. This model is referred to as a Lumped
Parameter Flexible Beam Model (LPFBM) in this work. These models
consider the barrel being broken down into two and three
rigid sections. The lengths of the rigid sections and spring
stiffnesses are selected to preserve the resonances (poles) and anti-resonances
(zeros) of the system. This is achieved by using a
novel scheme based on equations derived for the cantilever mode
frequencies for the zeros and on optimising the lengths of
the rigid sections for the poles. The responses from these
two models, in the frequency and time domain, are compared
to a finite-element barrel version, which is used as the
base model and a non-optimised two-section LPFBM. Recommendations are then
made on the appropriate model to use in the design
of a WCS based on the required frequency range of
the model and whether muzzle motion predictions are needed.
Related topics:
Weapon control system, Main battle tank, firepower and protection
View first page of "Purdy: Gun Barrel Models for Use in Weapon Control System Investigations"
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