目前推力最大的火箭之一是阿麗亞娜5，可將12.5噸衛星送到地球軌道，而不是到千倍之遙

遙的月球,火箭所載燃料為：主推級含130噸液氧+25噸液氫；助推級含277噸固體燃料。不知到月球得需多少噸燃料？

Ariane 5’s cryogenic H158 main stage (H173 for Ariane 5 ECA) is called the EPC (Étage Principal Cryotechnique - Cryotechnic Main Stage). It consists of a large tank 30.5 metres high with two compartments, one for 130 tonnes of liquid oxygen and one for 25 tonnes of liquid hydrogen, and a Vulcain engine at the base with thrust of 115 tonnes-force (1.13 meganewtons). This part of the first stage weighs about 15 tonnes when empty.

 Solid boosters

Attached to the sides are two solid rocket boosters (SRBs or EAPs from the French Étages d’Accélération à Poudre), P238 (P241 for Ariane 5 ECA), each weighing about 277 tonnes full. Each delivers a thrust of about 630 tonnes-force (6.2 MN). These SRBs are usually allowed to sink to the bottom of the ocean, but like the Space Shuttle Solid Rocket Boosters they can be recovered with parachutes, and this is occasionally done for post-flight analysis. (Unlike Space Shuttle SRBs Ariane 5 boosters are not reused.) The most recent attempt was for the first Ariane 5 ECA mission. One of the two boosters was successfully recovered and returned to the Guiana Space Center for analysis.^[2] Prior to that mission, the last such recovery and testing was done in 2003.

所有跟帖： 

• 謝謝八兄的解釋，有道理。但月球仍有地球六分之一引力，克服引力起飛仍要耗可觀燃料， -gpyang- ♂ (282 bytes) () 09/11/2011 postreply 09:50:11

• saturn V vs ariane -sts135- ♀ (758 bytes) () 09/12/2011 postreply 08:33:00

• 土星5的去月任務可攜帶45噸有效載荷 -sts135- ♀ (0 bytes) () 09/12/2011 postreply 08:36:44

• 因為沒有大氣層，脫離引力所需能量沒那麽大 -sts135- ♀ (137 bytes) () 09/13/2011 postreply 09:15:35

• I don't understand, how it works? Fuel was in the orbit? How arm -gpyang- ♂ (0 bytes) () 09/13/2011 postreply 11:26:29

• How Armstrong jumped to the orbit? -gpyang- ♂ (0 bytes) () 09/13/2011 postreply 11:29:09

• 是幾個獨立係統 -sts135- ♀ (258 bytes) () 09/13/2011 postreply 11:50:33

• ”繞月軌道飛行器“距月球麵的距離多大？飛行速度多快？ -gpyang- ♂ (121 bytes) () 09/13/2011 postreply 20:47:17

• 精確計算，和末端手動操作，手動操作是培訓必修。 -sts135- ♀ (63 bytes) () 09/14/2011 postreply 07:36:01

• 現在工程上應用的東西絕大多數都是上世紀50年代之前的老東西 -sts135- ♀ (152 bytes) () 09/14/2011 postreply 07:57:44

• 中國欠缺的不是理論計算，是精密加工和係統工程 -健康中醫- ♂ (127 bytes) () 09/14/2011 postreply 12:49:45

• 這個精密加工到現在還是被禁運的呢 -sts135- ♀ (77 bytes) () 09/14/2011 postreply 12:59:22

• 材料和精加工，真的是沒有辦法 -健康中醫- ♂ (255 bytes) () 09/14/2011 postreply 21:19:18

• 幸好沒做航天飛機，沒有capsule經濟核算 -sts135- ♀ (0 bytes) () 09/15/2011 postreply 06:58:55

• 按你的邏輯，飛機都是69年以後才能飛的了，不然怎麽導航呀 -sts135- ♀ (69 bytes) () 09/14/2011 postreply 17:11:20

• 你這個有點憑空瞎說了，航天飛機都還是手動操作的 -sts135- ♀ (0 bytes) () 09/14/2011 postreply 15:39:16

• 你太牛了，你連那個時候的控製軟件的水平都知道 -sts135- ♀ (29 bytes) () 09/14/2011 postreply 17:12:42

• 我可不是在幫誰辯解，這是我在NASA幹活的時候學到的。 -sts135- ♀ (99 bytes) () 09/14/2011 postreply 07:32:29

• 地球的escape velocity 是 11.2 km/s -sts135- ♀ (120 bytes) () 09/14/2011 postreply 13:20:07

• 回複：地球的escape velocity 是 11.2 km/s -sts135- ♀ (383 bytes) () 09/14/2011 postreply 14:42:08

• 更正一下 -TBz- ♂ (928 bytes) () 09/14/2011 postreply 16:02:35

• 對，我隻是簡化算的，用的都是worst cast scenario -sts135- ♀ (107 bytes) () 09/14/2011 postreply 18:27:35

• 一時半會兒也沒查到具體的環繞速度，就順手拿了逃逸速度 -sts135- ♀ (0 bytes) () 09/14/2011 postreply 18:30:55

• 2.353噸的 Aerozine 50/N2O4 -sts135- ♀ (0 bytes) () 09/14/2011 postreply 18:28:30

• 啊，是混肼加四氧化二氮 -TBz- ♂ (0 bytes) () 09/14/2011 postreply 20:18:05

• 火箭都是自帶氧化劑，而不是靠大氣中的氧 -sts135- ♀ (163 bytes) () 09/14/2011 postreply 14:46:20

• 常識錯誤的人是你啊，氧氣變液態是低溫。 -sts135- ♀ (285 bytes) () 09/14/2011 postreply 15:46:01

• 你這人對自己一知半解的東西胡攪蠻纏。 -sts135- ♀ (245 bytes) () 09/14/2011 postreply 16:49:29

• 添加的本身就是液態氧，不用什麽加壓。另外壓力越低液態氧質量越高，對發射越有利。 -sts135- ♀ (37 bytes) () 09/14/2011 postreply 18:34:29

• 你牛，你厲害，你眼光毒辣，你什麽都懂，你什麽都知道 -sts135- ♀ (0 bytes) () 09/15/2011 postreply 07:02:11