초록 ▼

The invention relates to means for reducing the spread of shots in a weapon system in which the shots are fired from the weapon in a ballistic trajectory from a launching device towards a target. It comprises means for measuring the position of the target, means for measuring the muzzle velocity of

The invention relates to means for reducing the spread of shots in a weapon system in which the shots are fired from the weapon in a ballistic trajectory from a launching device towards a target. It comprises means for measuring the position of the target, means for measuring the muzzle velocity of the ammunition unit, and, in one embodiment, also means for measuring the actual trajectory parameters of the ammunition unit (shell, projectile or the like), for instance the reduction of velocity in a specific trajectory distance. In response to these values the impact point is predicted. A braking command is transmitted to the ammunition unit via a radio line in response to the difference between the actual position of the target and the predicted impact point for braking the velocity of the ammunition unit in order to improve the hit probability. The braking means preferably comprises a plurality of braking flaps distributed about the periphery of the ammunition unit. Normally the braking flaps are retracted but they can be activated into a protruding position by an actuating device. Alternatively the desired braking effect can be obtained by separating different parts of the nose section from the body of the ammunition unit in order to increase its air-resistance.

대표청구항 ▼

Means for reducing the spread of shots in a weapon system in which the shots are fired from a weapon in a ballistic trajectory from a launching site towards a target comprising means for determining the target position, means for measuring the muzzle velocity of an ammunition unit in response to whi

Means for reducing the spread of shots in a weapon system in which the shots are fired from a weapon in a ballistic trajectory from a launching site towards a target comprising means for determining the target position, means for measuring the muzzle velocity of an ammunition unit in response to which the impact point of said ammunition unit is predicted, and drag means for affecting change in the aerodynamic shape of said ammunition unit activated in response to the difference between the actual position of the target and the predicted impact point for braking the velocity of said ammunition unit in order to improve the hit probability, said drag means being normally in a first unactivated state in which the air resistance of said ammunition unit is not affected; said drag means being adapted to be brought to a second state defining at least one predetermined braking level; and an actuating device for providing a required pressure to bring said drag means from said first to said second state; wherein said activating device comprises a powder charge.