Correction Strategy of Mortars with Trajectory Correction Fuze Based on Image Sensor.

Area of Science:

• Ballistics and projectile dynamics
• Guidance, Navigation, and Control (GNC) systems

Background:

• Achieving high projectile accuracy is critical for effective ordnance delivery.
• Existing trajectory correction systems often face trade-offs between performance, complexity, and cost.

Purpose of the Study:

• To propose a novel trajectory correction fuze concept.
• To investigate the feasibility and effectiveness of this fuze for enhancing projectile accuracy, particularly for mortars.

Main Methods:

• Development of a novel fuze concept with reduced sensor and actuator components.
• Modeling of projectile flight dynamics and control response.
• Analysis of coordinate system transformations for miss distance derivation using imager feedback.
• Implementation of closed-loop simulations to test the control strategy.

Main Results:

• The proposed fuze design achieves a balance between performance and affordability.
• Flight model analysis demonstrated control over crossrange and downrange trajectory components.
• Simulations confirmed a significant increase in projectile accuracy.
• The strategy proved effective for terminal correction of mortars.

Conclusions:

• The novel trajectory correction fuze concept is viable for enhancing projectile accuracy.
• The design's balance of performance and cost makes it suitable for practical applications.
• The demonstrated effectiveness supports its applicability for mortar terminal guidance.