Mission-oriented flying qualities criteria for high angle of attack aircraft

The flying qualities evaluation of high angle of modern attack aircraft lacks of quantitative evaluation criteria. Based on the conventional flying qualities criteria, with mission-oriented flying qualities evaluation method, various flying by wire systems with different transfer function parameters were tested, by subjective evaluation method and objective evaluation method. Thus, quantitative longitudinal and lateral flying qualities criteria for high angle of attack aircraft were developed. The result of comparison between the conventional flying qualities evaluation criteria and the quantitative evaluation criteria for high angle of attack aircraft shows that with higher short period damping ratio and control anticipate parameter in longitudinal and higher roll mode time constant in lateral, the flying qualities for high angle of attack aircraft get better. Therefore, the developed criteria is more adaptable in evaluation the flying qualities for the high angle of attack aircraft. This new criteria could be used as a guideline when designing modern air fighters.