Among the various modes of aircraft spin, flat-spin being the most ruthless form, the severity and the flight parameters govern the recovery success rate. This paper presents a novel approach for utilizing vertical thrust to reduce the fatality of the flat-spin in terms of excessive altitude loss regulating the survivability post aircraft recovery. F-18 High Alpha Research Vehicle is considered for the present study to demonstrate effectiveness of the proposed method. The dynamics of vertical thrust add-on is conceptualized and incorporated to the standard aircraft. Subsequently, to validate the effectiveness of this mode of recovery as compared to the conventional primary control based method, standard sliding-mode control technique is adopted. Closed-loop simulation shows that vertical thrust restricts altitude loss and minimizes spin recovery time compared to the conventional mode of recovery from flat-spin. The outcome of the present study ensures the use of vertical thrust as a potential solution for minimizing aircraft flat-spin-related fatal accidents.

中文翻译：

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基于垂直推力的飞机有效平旋恢复限制高度损失

在各种飞机自旋模式中，平旋是最无情的形式，其严重程度和飞行参数决定了恢复成功率。本文提出了一种利用垂直推力降低平旋致死率的新方法，该方法通过调节飞机恢复后的生存能力来调节过度高度损失。F-18 高阿尔法研究车辆被考虑用于本研究，以证明所提出方法的有效性。垂直推力附加的动力学被概念化并结合到标准飞机中。随后，为了验证这种恢复模式与传统的基于初级控制的方法相比的有效性，采用了标准的滑模控制技术。闭环模拟表明，与从平旋恢复的传统模式相比，垂直推力限制了高度损失并最大限度地减少了自旋恢复时间。本研究的结果确保使用垂直推力作为减少飞机平旋相关致命事故的潜在解决方案。