Optimization of a New High Rotary Missile-Borne Stabilization Platform

Area of Science:

• Mechanical Engineering
• Aerospace Engineering
• Navigation Systems

Background:

• Passive semi-strapdown roll stabilized platforms are crucial inertial navigation systems.
• Bearing devices are critical components for isolating projectile body roll.
• Reducing bearing friction moment directly improves platform stability and navigation accuracy.

Purpose of the Study:

• To introduce a novel nested bearing structure to minimize friction torque.
• To enhance the performance of passive semi-strapdown roll stabilized platforms.
• To improve overall navigation solution accuracy by reducing platform instability.

Main Methods:

• Developed a mechanical calculation model for friction in the nested bearing structure.
• Conducted simulation analysis to evaluate the friction characteristics.
• Performed experimental tests to validate performance improvements.

Main Results:

• The nested bearing structure reduced friction moment output stability by 47% compared to single bearings.
• Platform roll rate decreased by 50% with the nested bearing structure.
• Position and attitude errors were reduced by over 50% using the nested bearing structure.

Conclusions:

• The nested bearing structure effectively reduces friction torque in roll stabilized platforms.
• This design enhances axial bearing reliability and provides a more stable operating environment.
• The improved stability directly translates to higher navigation solution accuracy.