請問~
有兩架同款式的飛機.....
一架緊貼海平面，用高速飛行....一架在23000英呎(7000公尺)的高空，一樣也是高速飛行!
兩架飛機同時要從台灣飛到美國
請問....這兩架飛機，誰會先飛到美國阿?
PS. 不好意思喔~這問題對我很重要，我知道"性教育"的版面，大家比較有興趣來逛~
所以我只有"鳩佔鵲巢"將這題PO在這裡，比較有機會得到答案~^^
已更新項目:
二架飛機，都用同樣空速600節飛行
有兩架同款式的飛機.....
一架緊貼海平面，用高速飛行....一架在23000英呎(7000公尺)的高空，一樣也是高速飛行!
兩架飛機同時要從台灣飛到美國
請問....這兩架飛機，誰會先飛到美國阿?
PS. 不好意思喔~這問題對我很重要，我知道"性教育"的版面，大家比較有興趣來逛~
所以我只有"鳩佔鵲巢"將這題PO在這裡，比較有機會得到答案~^^
已更新項目:
二架飛機，都用同樣空速600節飛行
All Comments
緊貼海平面會先飛到美國！
原因非常簡單，圓周(半徑)越大，飛行的時間越長。
The main reason why airplanes fly at a high attitude is to avoid air friction. Air density varies based on the attitude. By flying at a high attitude, airplanes can use less fuel as they can fly faster.
In the past, all Trans-Pacific flights are required to make a stop at Midway Island because:
1. Piston engines are not reliable as turbofan engines nowadays; and
2. They need to make a fuel stop (as they are flying at a lower attitude).
In this case, even the fuel tanks are all fueled up, the air friction increases the consumption, which makes no planes making to their destination.