A kinematic approach to segmented-trajectory generation for the total loss of thrust emergency

Aviation

Kivanc A. Avrenli¹  Barry J. Dempsey² 

[1] Syracuse University, 721 University Ave Syracuse NY, 13244;University of Illinois at Urbana-Champaign, 205 N Mathews Ave Urbana, IL 61801;

关键词: aircraft;    commercial;    dual-engine failure;    glide;    jetliner;    performance;   

DOI  :  10.3846/16487788.2015.1104847

来源: DOAJ

【 摘 要 】

Contemporary twin-engine airliners are more vulnerable to total loss of thrust than yesterday‘s three and four engine airliners, due to reduced engine redundancy. In the event of a total loss of thrust, flight crews have only one chance for landing, because the aircraft cannot gain altitude. Therefore, there is a pressing need to explore the idea of an engines-out landing trajectory optimization for commercial jets. A few past studies addressed this safety issue for general aviation aircraft and fighter jets but not commercial jets, primarily because the essential aircraft-specific aerodynamic data are not publicly available. To fill in this gap, this study adopts a kinematic approach to aircraft trajectory optimization. Unlike conventional trajectory optimization methods, the kinematic algorithm requires minimal amount of aircraft-specific aerodynamic data that can be effortlessly collected in a full flight simulator. The paper describes the kinematic algorithm and applies it to a realistic bird strike scenario. Flight simulation tests are conducted in a full flight simulator to verify the accuracy of the algorithm. The results demonstrate that the algorithm can compute the optimum trajectory with a less than 3.0 percent error. Since the algorithm is accurate and computationally-undemanding, it is promising for real-world applications.

【 授权许可】

Unknown