STABILITY AUGMENTATION SYSTEMS FOR JET TRAINER AIRCRAFT

摘要

Stability augmentation for jet trainer aircraft requires damping of oscillations in the Dutch roll mode. The implementation of stability augmentation systems depends on the aircraft flight controls design. This paper presents the architecture and implementation of a yaw damper on the IAR-99 aircraft, which has unassisted mechanical controls, without the need for major modifications to the local structure and without affecting other onboard systems. The system ensures stability augmentation in the Dutch roll mode, improving aircraft safety and performance. Numerical simulations show the system can achieve the damping of Dutch roll oscillations at Level 1 for all flight conditions.