以飛機及發動機性能分析提昇航空燃油效率

Aviation Fuel Efficiency Enhancement Based on Analyses of Aircraft and Engine Performances

臧瑞傳(Ray C. Chang)；譚嗣瀛(Szu-Ying Tan)；藍川滔(C. Edward Lan)；官文霖(Wen-Lin Guan)

升阻比（L/D） ； 排氣溫度（EGT） ； 燃油消耗 ； 模糊邏輯模型化（FLM） ； lift-to-drag ratio (L/D) ； exhausts gas temperature (EGT) ； fuel consumption ； fuzzy-logic modeling (FLM)

航空安全及管理季刊

1卷2期（2014 / 04 / 01）

130 - 148

英文

因為民用民航機遍及全球的燃油使用量龐大，且航空燃油成本高漲，如何節省燃油及減少造成溫室效應的碳排放已成為當前民航產業迫切問題。本論文是使用基於數學模型的方法及飛航資料，來提昇民用飛機的燃油效率。應用模糊邏輯建模（FLM）技術可以建置升阻比（L/D）及排氣溫度（EGT）的標準模型，使用升阻比模型經由敏感性分析估測飛機性能不足來決定造成可能燃油消耗過多相關的飛行變數之 影響。在完成與標準EGT的模型的比較分析後，發動機的潛在問題及不正常情況能夠被診斷出來。分析有關飛機和發動機性能不足的這兩個連續步驟，以確定造成燃料消耗過多之可能飛機組件。如果能夠改善或移除所有的異常情況，燃油效率提昇將可以達成。

Since the amount of worldwide fuel usage for the commercial transport aircraft is huge and surging of fuel cost, how to save the fuel consumption and reduce the carbon emission is an urgent problem in aviation industrial circles. The objective of the present paper is to use a model-based method and flight data to enhance fuel efficiency for commercial transports. The fuzzy-logic modeling (FLM) technique is employed to establish the standard models of lift-to-drag (L/D) and exhaust gas temperature (EGT). The L/D model is utilized to predict the deficiencies of aircraft performance through sensitivity analysis to determine the relative contributions from influencing flight variables for possible excessive fuel consumption. The potential problems and abnormal conditions of engines can be diagnosed after the comparative analysis with the standard EGT models. These two successive steps of analysis pertaining to aircraft and engine performance deficiencies in the present paper are designed to determine the aircraft parts responsible for excessive fuel consumption. If all the deficiencies can be removed or improved, the fuel efficiency enhancement will be achieved.

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