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[原创] 2008珠海航展航天馆巡礼之三:东方红五号(DFH-5)卫星平台

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Nighthawk 发表于 2010-11-16 10:38 | 显示全部楼层
东方红5号卫星复杂的附件,带有数组桁架
heito 发表于 2010-11-16 08:09



   这一堆火箭发射巢之类的东西是什么?
暗夜流星 发表于 2010-11-16 13:00 | 显示全部楼层
热管?

这一堆火箭发射巢之类的东西是什么?
Nighthawk 发表于 2010-11-16 10:38
rottenweed 发表于 2010-11-16 14:55 | 显示全部楼层
这一堆火箭发射巢之类的东西是什么?
Nighthawk 发表于 2010-11-16 10:38

应该是散热的。新技术包括“网络热管和展开式辐射器等排热技术”。
lixianghua 发表于 2010-11-16 15:05 | 显示全部楼层
回复 60# heito


    终于等到DFH5的确切信息了,我早就再等在盼了。谢谢版主
卓鑫 发表于 2010-11-16 15:44 | 显示全部楼层
不知道东5有没有确切的时间表,如果要等上10年8年的话,那真的是花都谢了。
 楼主| jingyan66 发表于 2010-11-16 17:43 | 显示全部楼层
11月16日报道   11月15日下午,第8届珠海航展中国航天科技集团展位上的东方红五号新一代大型静止通信卫星平 ...
heito 发表于 2010-11-16 08:11



这颗本来是科技集团想作为远程义务教育的那颗星,东四还未成熟,就抛出这么个概念,单平台(不包括载荷)就要了研制经费20个亿
naugty 发表于 2010-11-16 18:25 | 显示全部楼层
20亿RMB,相当于3亿美刀了! 果然胃口大

估计主要是搭上一个对地成像的招牌,估计某装很羡慕NRO系列,就寄希望于东五了
fuguocai 发表于 2010-11-16 19:11 | 显示全部楼层
回复 65# 卓鑫


   有一赌:首发失败。两年后成功。再三年后成熟,还真会超过10年
bombers 发表于 2010-11-16 19:29 | 显示全部楼层
20亿RMB,相当于3亿美刀了! 果然胃口大

估计主要是搭上一个对地成像的招牌,估计某装很羡慕NRO系列, ...
naugty 发表于 2010-11-16 18:25

对这个说法表示怀疑,东方红五的姿控精度恐怕不能满足对地成像的要求
军方若真要搞鳖版的NRO系列,必须狠砸银子另起炉灶
roychen 发表于 2010-11-16 20:28 | 显示全部楼层
看了这个东五的数据,感觉太恶性了。吓死人了。
 楼主| jingyan66 发表于 2010-11-16 20:43 | 显示全部楼层
对这个说法表示怀疑,东方红五的姿控精度恐怕不能满足对地成像的要求
军方若真要搞鳖版的NRO系列,必须狠 ...
bombers 发表于 2010-11-16 19:29



   
不用怀疑,5院着实如此打算。光平台就拨了20亿研发经费,还未包括载荷,这还不够狠砸,这个平台的银子就够去年一院十来发火箭的产值了
bombers 发表于 2010-11-16 20:52 | 显示全部楼层
不用怀疑,5院着实如此打算。光平台就拨了20亿研发经费,还未包括载荷,这还不够狠砸,这个平台 ...
jingyan66 发表于 2010-11-16 20:43

感觉这个平台的造型中规中矩了点,NRO的不少卫星都很好很天顶星
另外,东方红五用于低轨对地观测还是偏小,美帝的长曲棍球、KH12重量都超过15吨了
 楼主| jingyan66 发表于 2010-11-16 21:06 | 显示全部楼层
感觉这个平台的造型中规中矩了点,NRO的不少卫星都很好很天顶星
另外,东方红五用于低轨对地观测还是 ...
bombers 发表于 2010-11-16 20:52



   

目前这个DD最多是预研,10年内你能看到它就不错了,当然这个肯定不会是最后的构型,可能连示意图都算不上。这个模型只是告知天下P民们,偶们5院不是光马扁银子的,还是干些实事的
中国睡教 发表于 2010-11-16 22:15 | 显示全部楼层
这一代的名字很吉利,叫动物,估计会有不错的表现,不知道能带几个转发器呢?
793095916 发表于 2010-11-18 16:27 | 显示全部楼层

东方红5号卫星平台

东方红五号  DJS-3/DFH-5为超大型卫星平台,将使用二次展开十字太阳翼,桁架结构,电推技术等多种先进技术,卫星平台质量达到6.5~7吨,远远超出现有长征三号乙的运载能力,将用长征五号火箭一箭双星发射。对比东四平台,东五平台的有效载荷质量将达到1200~1500千克,电源功率达到15~20千瓦,作为通信卫星使用时,携带的转发器数量可成倍提高,从设计指标上说是一款媲美波音BSS702、泰利斯SpaceBus4000的顶尖级通信卫星平台。同时,东五平台也可搭载大口径相机,用作对地成像卫星,有助于增强中国的对地观测能力。  第8届珠海航展中国航天科技集团展位上的东方红五号新一代大型静止通信卫星平台模型布展完毕,这是东方红五号卫星的首次公开亮相,同时展出的还有已经投入使用的东方红四号卫星平台的模型。东方红五号卫星平台采用十字形太阳翼,整体外形类似于中国采购法国泰利斯公司的"中星9号"通信卫星。东方红五号将具有更强的电力供应,携带更多的载荷,将是中国未来主力大容量通信卫星平台。
鱼香肉丝 发表于 2010-11-19 00:49 | 显示全部楼层
这一堆火箭发射巢之类的东西是什么?
Nighthawk 发表于 2010-11-16 10:38



    电池?
 楼主| jingyan66 发表于 2010-11-20 12:20 | 显示全部楼层

美国《航空周刊》:东方红五号(DFH-5)卫星平台预计2017年首飞

First CAST DFH-5 Bus To Launch By 2017

Nov 17, 2010   
By Bradley Perrett perrett@aviationweek.com
Beijing  

The first satellite based on the CAST DFH-5 bus should be launched in 2016 or 2017, addressing the active market for large spacecraft platforms.

Development is scheduled for the next five-year economic plan of the Chinese government, covering 2011 to 2015, says Chinese Academy of Space Technology (CAST) President Yang Baohua.

“Currently, there are no great difficulties in the development,” Yang tells Aviation Week. “It is just an issue of scale, because we do not need to make any particularly difficult breakthroughs in the concept as we move to the DFH-5 from the DFH-4,” which is currently CAST’s biggest bus.

The DFH-5 is a “large, trussed satellite platform” that will “meet the needs of new-generation large geostationary communications satellites and Earth observation satellites,” CAST says

The DFH-4 was initially unreliable, but Yang says its problems have been “basically” resolved.

“We can say that the DFH-4 has progressed from failures to success, and now from success to maturity. Next it will progress from maturity to international recognition.”

While the DFH-4 is now CAST’s main offering, the smaller DFH-3 still has a future, Yang says, speaking at Airshow China in Zhuhai. An order for eight satellite buses placed at the show by affiliate China Great Wall Industry Corp. were originally said to be DFH-4s, but some might actually be DFH-3Bs, an uprated version of the earlier bus.

The DFH-4 has a launch mass of 5.1-5.4 tons, payload of 600 to 800 kg., and power of 10.5 kw. The figures for the DFH-5 are 6.5-7 tons, 1,200-1,500 kg. and 15-20 kw.

CAST is part of national space contractor CASC (China Aerospace Science & Technology Corp.).
yy1129 发表于 2010-11-20 17:13 | 显示全部楼层
2017年能飞就不错了!估计出来就落后了!

点评

差距还在10年以上。努力。  发表于 2011-12-18 08:31
 楼主| jingyan66 发表于 2010-11-25 14:31 | 显示全部楼层

东方红五号(DFH-5)卫星平台预计2016或2017年首飞

Long March 7, DFH-5 Advance Toward Service




Nov 23, 2010
By Bradley Perrett
Beijing  

Spacecraft specialist CAST, meanwhile, expects that the first satellite based on the DFH-5 bus should be launched in 2016 or 2017, addressing the active market for large platforms. Development is scheduled for the next five-year economic plan of the Chinese government, covering 2011-15, says CAST President Yang Baohua.

“Currently, there are no great difficulties in the development,” Yang tells Aviation Week. “It is just an issue of scale, because we do not need to make any particularly difficult breakthroughs in the concept as we move to the DFH-5 from the DFH-4,” which is now CAST’s biggest bus.

The DFH-5 is a “large, trussed satellite platform” that will “meet the needs of new-generation, large geostationary communications satellites and Earth-observation satellites,” CAST says.

The DFH-4 was initially unreliable, but Yang says its problems have been “basically” resolved.

“We can say that the DFH-4 has progressed from failures to success, and now from success to maturity. Next it will progress from maturity to international recognition,” he says.

While the DFH-4 is now CAST’s main offering, the smaller DFH-3 still has a future, Yang says, speaking at the Airshow China exhibition here. Part of the order for eight satellite buses placed at the show by affiliate China Great Wall Industry Corp., though stated to be DFH-4s, might be DFH-3Bs, an uprated version of the earlier bus.

The DFH-4 has a launch mass of 5.1-5.4 tons, payload of 600-800 kg. (1,320-1,760 lb.) and power of 10.5 kw. The figures for the DFH-5 are 6.5-7 tons, 1,200-1,500 kg. and 15-20 kw.

CALT (the China Academy of Launch Vehicle Technology), SAST (the Shanghai Academy of Spaceflight Technology) and CAST (the Chinese Academy of Space Technology) all belong to national space contractor CASC (China Aerospace Science & Technology Corp.).

An order for 20 Long March 3s from China Great Wall Industry Corp. will help CALT to boost production of that rocket. The separate order for eight spacecraft buses will support CAST’s current production rate.

The two deals—in effect, internal group transactions—were together worth 15 billion yuan ($2.26 billion). China Great Wall acts as a shop front for CASC products. It will receive the rockets and buses over the next five years.

Long March 3 production will rise by at least 50% from its current rate of 12-15 a year, says Hao. The higher rate will reduce costs, but only a little, because the launcher is already a mature product.

CAST expects to loft 14 satellites this year and 20 next, including four based on the DFH-4 bus, with three more of that model under construction, Yang says.
 楼主| jingyan66 发表于 2010-11-25 14:34 | 显示全部楼层
Currently, there are no great difficulties in the development,” Yang tells Aviation Week. “It is just an issue of scale, because we do not need to make any particularly difficult breakthroughs in the concept as we move to the DFH-5 from the DFH-4,”

到现在DHF-5是采用桁架结构还是承力桶结构都没定,就说这种话。航展上那个模型是典型的承力桶结构,新闻报道却说成是桁架,不知道是记者的问题还是被采访人忽悠
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