中國神舟七號太空飛船成功著陸Chinese Shenzhou 7 Safely Return to Earth

[wwwuxes]

落點神準,讓我台灣人民恐懼萬分,

天啊,那飛彈也這麼"唬爛'怎麼辦,

還有那現埸遇有觀眾拍手是什麼回事

[leemz2002]

@wwwuxes 飛船的落點精度比戰術飛彈差遠了。飛船是用降落傘降落的，受氣流­影響很大。因為濺落精度是一個時間函數，通過大氣層的時間越長，­誤差就越大。通常人類能承受的落地速度極限是6米／秒，通常要控­制在4米／秒以內。穿過12公里厚的對流層就需要至少兩千秒。而­且，飛船對濺落精度也不高，只要能落在半徑幾公里的範圍內就算合­格。

彈道飛彈就不同了，為了節約彈頭重量，會盡量提高命中精度。大陸­的短程彈道飛彈的命中精度可以達到幾十米的尺度。足以摧毀機場塔­台這樣的點目標了。

不過一般對民眾來說，命中精度高是好事，可以減少誤傷民用目標的­機率。尤其是那些住在機場或者軍事基地周圍的朋友。

這段圖像是由著陸現場拍攝，聲音卻是取自北京的航天測控中心大廳­，所以有測控的聲音。現場的風很大，而且沒有甚麼對話。有對話也­都是通過無線傳到測控中心大廳的。所以用現場的聲音不如直接用測­控大廳的聲音容易讓一般民眾明白。

[wuxes3721]

@leemz2002 所以我說中共很會唬欄,還拍到降落時揚起的飛沙,等的位置很神準­的

[leemz2002]

@wuxes3721

返回艙是被多重系統精確跟蹤的。而且地面有多組直昇機在待命。控­制中心隨時向這些救援小組發出飛船著陸的預定位置。這對有飛彈攔­截能力的國家來說應該不算甚麼問題。

不過这个精度還是相当高的。从三百多公里高的軌道上制動減速後，­经过几万公里落到一个四公里见方的面積上，相當於從四十公里外命­中一輛轎車大小的目標。如果沒有降落傘的干擾，精度還會提高一個­數量級。這差不多就是中國大陸洲際彈道飛彈的命中精度了。這說明­中國大陸已經掌握了末端變軌的技術。

過去美俄都有過飛船返回艙偏離幾百甚至上千公里的例子。大陸追求­這樣的精度，可能多半是為了降低回收成本。

[123zhonghua]

@wwwuxes 放心吧，大陆永远不会打台湾的

[gretzkysyotes]

Personally, I don't care if it's my country (The US) or China, or India, or whoever goes back to the moon............I just want to see it happen in the next 40 years of my lifetime. Perhaps even Mars..........it will be a wonderful acheivement by HUMAN KIND......not just a country.

[xjshc020]

this no realer.

[tubinginnow]

lol at 0:59- 1:02 sooo funny the way those people hold his hand.. and make him sit..

it's so comic...

[fengzaixiao]

这是民族的骄傲, 大陆台湾都有份

[jcyoshi]

support china!!

[KON670AM]

Never ,,,, not until they clean up that shithole and give Chinese REAL FREEDOM

[therecommender]

Respect

impressive mission

[KON670AM]

Impressive would be the word if it was 1962 ... now you are just glad the Taikonauts made it back

[yardysmith]

this is why i love you tube

their mission was pretty

much ignored in the western

media

the been there done that set

but make no mistake

they will not stop

here

[qxzhang]

to all the guys:no matter US or CHINA have the ability to build the spaceship to explore the universe,so its no doubt that its real

[redshift40]

Fantastic mission, glad to know they are safe.

[gibonthomas]

doen't look real

[fantasybj]

it's real, sorry to tell you that

[arthur21st]

you mean that is unbelievable? or cannot accept it?

[ChinaShi]

It look realer that America's "moon walk"

[frayperico]

Yeah, but a lot easier....

[KON670AM]

realer?

what does "realer" mean in english? lol

And Chinashi you bow to your space master .... the reason why you even have a space program is to compete with America!

But we are like 45 years ahead of China in space program and are the first on the Moon

[ChinaShi]

haha, funny man, millions ppl today dont even think ur man got on the moon

and one more thing, all the Chinese ppl know that America is the only superpower in the world, and 100 years ahead of us. But it doesnt mean u can keep this seat forever. Rome is great but also crashed down. Be modest and give ur respect to other ppl, even ur enemy. Got it? 33 years guy

[ChinaShi]

BTW, ur music video is pretty good, I also love rock and metal, just came back from the Metallica show, keep rock on and dont bother Chinese ppl anymore, because its not ur business