[閒聊] 引擎置換
之前Airbus公司剛開始測試A380的GP7200引擎時
有請製造商將新引擎裝在舊的B747上,置換掉一顆引擎進行實際飛行測試
http://imageshack.com/a/img845/9427/3heo.jpg

另外稍作搜尋以後也發現好像這樣測試引擎是滿常見的事
例如波音測試新引擎時
http://imageshack.com/a/img197/9854/nszn.jpg

或是空巴自己用320測試
http://imageshack.com/a/img198/866/sztj.jpg

都是這樣直接換掉一顆就拿來飛飛看最乾脆
今天在越南回台灣的時候,剛好遇到這兩台停在一起
http://imageshack.com/a/img208/4135/i0qr.jpg

突然想到如果把B747推力較小的四顆引擎,換成B777推力較大的雙引擎
不知道是否可以?
因為我查了一下,以B747-400來說
三家引擎推力每具分別是:63,300 lbf PW 62,100 lbf GE 59,500 lbf RR
(維基百科資料)
而B777-300ER的引擎推力為:115,000 lbf GE
(維基百科 只有一家GE的資料)
如果可行(B777-300ER推力與B747-400的兩倍只差一點點)
那四顆引擎換成兩顆,載重與油耗來說,不會比較省嗎???
好啦我只是想到想提出來閒聊或是看看有沒有神人或教官可以講解他的可行性與困難點
或是根本不可行的原因之類的
謝謝~
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