Tesla Roadster 2 0-60mph最快只要1.1秒? - 汽車
By Hardy
at 2020-06-15T14:40
at 2020-06-15T14:40
Table of Contents
影片:
How The Tesla Roadster Rockets Work - 0-60 In One Second?!
https://youtu.be/4PRi4B1APj0
Engineering Explained 最近做了一則有關於Tesla Roadster 2 的影片,以前
Roadster 2 剛發表時有說到0-60 mph 只要1.9秒,並且這是基本規格,如果加
上SpaceX 選裝套件後可以更快。Engineering Explained 就根據了一些已經揭
露的資訊以及少許假設來計算Roadster 2 加上SpaceX 選裝套件後,0-60 mph
最快會是多少?他計算的結果是1.1秒。
這影片中的計算都是很簡單的,要看懂不難,不過其中有一個物理量 -
specific impulse,中文常翻成"比衝",比較不常見,有在關心火箭引擎或者
是飛機噴射引擎的人可能會比較了解。它的單位是s(秒),越大代表效率越好。
當然還有其他解釋方式,不過以秒當單位的這個解釋是目前最常用的。
(不過效率高不代表可產生的推力就一定強)
而Engineering Explained 用到的假設不多,例如車重、SpaceX 套件比衝等,
不過有假設就會有誤差,若電池技術進步使得車子更輕、或者比衝比假設高那
就有可能更快,若比衝比假設的要低就可能更慢。到底實際上會是多少可能還
要再等兩年等實車推出後才會知道。
--
AK47 vs Portland Police
https://i.imgur.com/zBrLrjV.png
https://youtu.be/EOQI9z_gi5g
--
How The Tesla Roadster Rockets Work - 0-60 In One Second?!
https://youtu.be/4PRi4B1APj0
Engineering Explained 最近做了一則有關於Tesla Roadster 2 的影片,以前
Roadster 2 剛發表時有說到0-60 mph 只要1.9秒,並且這是基本規格,如果加
上SpaceX 選裝套件後可以更快。Engineering Explained 就根據了一些已經揭
露的資訊以及少許假設來計算Roadster 2 加上SpaceX 選裝套件後,0-60 mph
最快會是多少?他計算的結果是1.1秒。
這影片中的計算都是很簡單的,要看懂不難,不過其中有一個物理量 -
specific impulse,中文常翻成"比衝",比較不常見,有在關心火箭引擎或者
是飛機噴射引擎的人可能會比較了解。它的單位是s(秒),越大代表效率越好。
當然還有其他解釋方式,不過以秒當單位的這個解釋是目前最常用的。
(不過效率高不代表可產生的推力就一定強)
而Engineering Explained 用到的假設不多,例如車重、SpaceX 套件比衝等,
不過有假設就會有誤差,若電池技術進步使得車子更輕、或者比衝比假設高那
就有可能更快,若比衝比假設的要低就可能更慢。到底實際上會是多少可能還
要再等兩年等實車推出後才會知道。
--
AK47 vs Portland Police
https://i.imgur.com/zBrLrjV.png
https://youtu.be/EOQI9z_gi5g
--
Tags:
汽車
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