Research on the Aerodynamic Failure Load for Civil Aircraft

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Research on the Aerodynamic Failure Load for Civil Aircraft

Tan, Linlin

This paper introduces the failure list selecting methods based on the system function safety evaluation report, and introduces the flight loads calculation methods of the time at the failure occurrence and continuous flight after the failure based on the selected failure list. Taking a large civil airplane as an example, it proposes the principle of failure list selecting, and creates the concept of control surfaces jam biased Normally Encountered Position rather then the extreme deflection. Finally it quantitatively analyzes failure load such as elevator jam, aileron jam, rudder jam, stabilizer jam and flap actuator disengagement. During the procedure it compares with the conventional flight load. The analysis of elevator jam show that it would create an asymmetrical moment at the tail due to asymmetric deflection of the left and right elevators. But the moment is not covered by normal load, which constitutes the critical case of the rear fuselage. And also the flap actuator disengagement would be the serious situation in load design. So both of them should be carried out. This paper comes up with an effective, reliable failure load calculation and analysis method.

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Document information

Title :

Research on the Aerodynamic Failure Load for Civil Aircraft

Additional title:

Lect. Notes Electrical Eng.

Contributors:

Lee, Sangchul (editor) / Han, Cheolheui (editor) / Choi, Jeong-Yeol (editor) / Kim, Seungkeun (editor) / Kim, Jeong Ho (editor) / Tan, Linlin (author)

Conference:

Asia-Pacific International Symposium on Aerospace Technology ; 2021 ; Korea (Republic of) November 15, 2021 - November 17, 2021

Published in:

The Proceedings of the 2021 Asia-Pacific International Symposium on Aerospace Technology (APISAT 2021), Volume 1 ; Chapter : 65 ; 857-867

Lecture Notes in Electrical Engineering ; 912

Publication date :

2022-08-31

Size :

11 pages

ISBN :

978-981-19-2689-1 , 978-981-19-2688-4

ISSN :