發動機是飛機的心臟，深深影響著飛航安全與航空公司的經營管理，也是飛機修護中一個非常重要的環節，然而飛機發動機非常龐大，除了在機場、專業維修廠與教學場所外，在一般學校教室是很難見到發動機實體，也無法親自參與整個維修過程，大幅增加學習的困難度。
拜科技進步所賜，擴增實境(Augmented Reality,AR)、虛擬實境(Virtual Reality,VR)與混合實境(Mixed Reality,MR)等技術相繼問世，在比較三種不同的實境技術後，我們嘗試使用混合實境的虛實資料疊加特性來製作本研究。
本論文使用混合實境Microsoft HoloLens 2搭配Unity 3D軟體開發三個發動機維修技術的維修場景，在第一個場景中，我們結合互動按鈕與動畫，模擬將發動機從飛機機翼派龍(Pylon)卸下的模擬，讓使用者學習拆卸發動機的過程。在第二個場景中，我們將拆卸下來的發動機做大部分解的立體爆炸圖，並標示出主要之部件，以及燃油流向的動畫，來介紹發動機的基本構造。第三個場景中，使用混合實境可與虛擬物體互動的特性，讓使用者可以親自動手模擬拆換發動機葉片，並且熟悉整個流程步驟。
此外，由於班級人數眾多，並不是每個人都能在上課期間進行實作，此系統可透過Wifi將Microsoft HoloLens 2的即時影像投影在螢幕上，讓其他學生共同參與整個課程，同時也能了解操作過程。
在完成此系統製作後，也對虎科大飛機系學生進行測試與問卷調查，並期許學生能夠在普通教室也能清楚地了解主要發動機維修的流程與步驟，使學習更有效率。

The engine is the heart of the aircraft, which deeply affects flight safety and airline management, and is a very important part of aircraft maintenance.
Thanks to the advancement of technology, Augmented Reality (AR), Virtual Reality (VR), and Mixed Reality (MR) technologies have been introduced one after another.
In the first scenario, we combine interactive buttons and animations to simulate the removal of the engine from the wing of an airplane so that users can understand the process of disassembling the engine. In the second scenario, we make an exploded diagram of the disassembled engine with the main components and an animation of the fuel flow to introduce the basic structure of the engine. In the third scenario, we use the hybrid reality to interact with the virtual objects, so that users can simulate the disassembly and replacement of the engine blades and get familiar with the whole process.
In addition, because of the large class size, not everyone is able to work during the class, the system can project a live image of Microsoft HoloLens 2 on the screen via Wifi, allowing other students to participate in the class and understand the process.
After the completion of the system, a test and questionnaire survey will be conducted to the students, with the goal that the students could clearly understand the process of each engine maintenance in the general classroom and make the learning more efficient at the same time.

摘要.....................................................i
Abstract................................................ii
誌謝....................................................iii
目錄....................................................iv
表目錄...................................................vi
圖目錄...................................................vii
第一章 緒論..............................................1
1.1 研究背景.............................................1
1.2 研究動機.............................................2
1.3 研究目的.............................................2
第二章 文獻探討...........................................4
2.1 延展實境 (Extended reality)..........................4
2.1.1 擴增實境 (Augmented Reality).......................4
2.1.2 虛擬實境 (Virtual Reality).........................5
2.2 混合實境 (Mixed Reality).............................6
2.2.1 混合實境發展.......................................7
2.2.2 混合實境系統種類...................................8
2.2.3 Microsoft HoloLens的應用..........................10
第三章 研究方法..........................................12
3.1 研究工具............................................12
3.1.1 Microsoft HoloLens................................12
3.1.2 混合實境工具組（Mixed Reality Toolkit, MRTK）......15
3.1.3 遊戲引擎Unity.....................................16
3.1.4 Unity 3D 操作介面.................................17
3.1.5 程式語言..........................................18
3.1.6 API介面...........................................19
3.1.7 Mixed Reality 功能工具............................19
3.2 普惠JT9D發動機......................................20
第四章 JT9D發動機維修混合實境系統設計與開發................22
4.1 建立發動機混合實境專案...............................22
4.1.1 專案的建立與設定...................................22
4.1.2 變換場景按鈕製作...................................26
4.1.3 動畫系統..........................................27
4.1.4 粒子系統..........................................28
4.1.5 可互動物件........................................30
4.1.6 拆卸葉片流程順序程式之設計..........................32
第五章 結果與討論........................................34
5.1 JT9D發動機維修混合實境系統介紹........................34
5.1.1 場景一、JT9D發動機介紹.............................35
5.1.2 場景二、從機翼派龍拆卸發動機場景.....................38
5.1.3 場景三、拆卸發動機葉片..............................43
5.2 問卷調查.............................................47
5.3 問卷調查結果.........................................48
5.3.1 問題組織能力.......................................50
5.3.2 問題分析能力.......................................51
5.3.3 問題評論能力.......................................52
5.3.4 解決問題能力.......................................53
5.3.5 團隊合作...........................................54
第六章 結論與建議.........................................55
6.1 結論.................................................55
6.2 未來建議.............................................56
參考文獻.................................................57
附錄一...................................................60
Extended Abstract........................................62

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