題 目：飛航操作數據的模態分析
研 究 生：牛天豪
指導教授：景鴻鑫

本研究的目的為針對航機最後進場階段之操作品質表現進行模態分析，以建立評估飛航操作品質之指標及其相關準則，為建立飛安工程學提供基礎。本研究透過FOQA系統取得A330型客機之飛航數據，以飛行力學中飛機六大自由度運動方程式為基礎，並透過小擾動理論，選取縱向運動模態參數包含前進速度擾動u、沉降率擾動w、俯仰率擾動q、俯仰角擾動θ四項參數；透過希黃轉換(Hilbert-Huang Transform)求得各參數每一瞬間之頻譜，透過比對各參數之頻譜，尋找航機運動模態出現的跡象，結合飛航模態相關參數與參數之相對變化量，來確認飛航模態 的出現。本研究利用希伯特頻譜以及希黃轉換，尋找航機縱向運動模態，包括長周期模態以及短周期模態，在真實航班中所出現的時間點以及持續時間，透過相關參數的變化，確認縱向模態的發生與經過。本研究所提出的模態分析方法可提供對FOQA數據更為深入的理解，對評估飛航操作品質將有所助益，並可進一步提供飛航安全數據化評估的基礎。

The goal of this research is to extract the model information from the FOQA data obtained in the final approach phase of flight for the evaluation of the quality of flight operation and the establishment of engineering analysis of flight safety. In the final approach phase, since the flight has been stabilized, the longitudinal modes are expected to dominate the flight. From the theory of flight dynamics with small perturbation, four parameters are chosen for revealing the existence of longitudinal modes, they are: forward speed, vertical speed, pitch angle, and pitch rate. When the longitudinal modes occurred, these four parameters are expected to vary synchronously. With the capability to extract instantaneous frequency, the Hilbert-Huang transform is used to calculate the frequency spectra of these four parameters. By locating the time intervals of resonance with the four parameters varying with the same frequency, the longitudinal modes are expected to be identified. Together with the spatial variation of parameters, the existence of longitudinal modes can be further confirmed. The technique established in this research is thought to be also effective in the identification of lateral modes. By investigating these flight modes, the quality of flight operation can be understood more thoroughly. It is also hoped that the present research can be helpful in the establishment of the engineering analysis of flight safety as an academic field.

[1] International Civil Aviation Organization, “Safety Report 2014”, 2014.
[2] Federal Aviation Administration, “Introduction to Safety Management Systems for Air Operators”, Advisory Circular AC No：120-92, 2006.
[3] 交通部民用航空局，“安全管理系統”，民航通告編號：AC120-032C，中華民國一佰年一月。
[4] Bryan, G.H.; and W.E. Williams. “The Longitudinal Stability of Aerial Gliders.” Proceedings of the Royal Society of London, Series A 73, PP. 110-116, 1904.
[5] Bryan, G. H.; Stability in Aviation. London: Macmillan, 1911.
[6] Smetana, F.O.; D.C. Summey; and W.D. Johnson. Riding and Handling Qualities of Light Aircraft-A Review and Analysis. NASA CR-1955, March 1955.
[7] Macdoald, R.A.; M. Garelick; and J.O’Grady. “Linearized Mathematical Models for DeHavilland Canada ‘Buffalo and Otter’ STOL Transports.” U.S. Department of Transportation, Transportation System Center Report No.DOT-TSC-FAA-71-8, June 1971.
[8] Perrow C., “Normal Accidents: Living with High Risk Technologies”, NJ, Princeton University Press, 1984.
[9] U.S. General Accounting Office, Aviation Safety: U.S. Efforts to Implement Flight Operational Quality Assurance Program, Flight Safety Digest, Vol.17, no. 7-9, pp.1-36, 1988.
[10] 景鴻鑫，“本土化之飛安理念”，飛航安全檢討與提昇研討會，國立成功大學，中華民國八十七年。
[11] 鍾華興，“飛航安全之工程分析-線性系統觀點”，國立成功大學民航研究所碩士論文，中華民國九十七年六月。
[12] 陳品妤，“民航操作品質數據之安全性分析”，國立成功大學民航研究所碩士論文，中華民國九十九年六月。
[13] 許澔瑋，“飛航癥候初步探討-幾何分析”，國立成功大學航空太空工程研究所碩士論文，中華民國一佰零一年六月。
[14] 蘇愛琦，“飛航癥候之初步探討-相關性分析”，國立成功大學民航研究所碩士論文，中華民國一佰零一年六月。
[15] 洪安國，“飛航數據之非線性分析”，國立成功大學民航研究所碩士論文，中華民國一佰零二年六月。
[16] 張翔喻，“飛航操作品質表現之機率化評估”，國立成功大學民航研究所碩士論文，中華民國一佰零四年一月。