4 questions about rocket (10分)

2007-04-01 4:48 am
1.Why does the rocket use hydrogen as fuel ? Can the fuel used in cars also be used in a rocket ?

2.Why does the rocket need to carry oxygen?

3.Under normal conditions , hydrogen and oxygen are gases.Why are they stored in liquid forms in rocket?

4.The rocket boosters of a space shuttle are solid fuels .How are these rocket boosters different from rockets that use liquid fuels?

唔該哂...識幾多就答啦.....個答案唔洗成篇野咁...有point得嫁啦...唔該...

回答 (1)

2007-04-01 10:09 pm
✔ 最佳答案
1. hydrogen是現時火箭最理想之燃料,因為價錢平而效率高,又冇污染。衹是儲存比較危險。如汽車使用純hydrogen燃料,要使用特別容器來儲存,所以現時汽車多使用石油氣。
2. oxygen是助燃劑,在太空冇氧氣,是無法燃燒爆發的。
3. 只要將氣體加壓,氣體就能變成液體,所以儲存要有些技巧。
4. 固體燃料一經裝上,是很容易處理及穩定的。rocket boosters 是可以回收再用的,雖然價錢較高,但容易處理,可大幅減少意外發生。


收錄日期: 2021-04-12 21:25:34
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070331000051KK04450

檢視 Wayback Machine 備份