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China Space Military:Recon, Satcom, Navi, ASAT/BMD, Orbital Vehicle, SLV, etc.

The news release only says sub-meter resolution. If you want to know whether it's sub-50 cm resolution, you probably have to wait a few years. China tends to be slow in releasing the exact technical details.
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China launches Gaofen-9 satellite with sub-meter resolution

China launches HD observation satellite - Xinhua | English.news.cn

"Gaofen-9 was launched from the Jiuquan Satellite Launch Center in the northwestern province of Gansu at 12:42 p.m. aboard a Long March-2D carrier rocket. It was the 209th flight of the Long March rocket series.

The optical remote sensing satellite is capable of providing photographs with a resolution of less than a meter."


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Domestic Beidou satellite system hoped to rival GPS in ASEAN nations
2015-09-15

China will deepen its cooperation with ASEAN countries over Beidou Satellite Navigation System, a domestic Chinese rival to GPS, enhancing its application and service ability in Southeast Asia, China News Service reported Sunday.

"According to the plan, the Beidou system will extend its reach into countries along the route of the Belt and Road Initiative by 2018 and have worldwide coverage by 2020. The system belongs to China, but it also belongs to the whole world. We are willing to cooperate with other nations to advance the application of Beidou, especially with ASEAN countries," Ma Jiaqing, deputy director of Beidou Navigation Satellite Administration of China told reporters at China-ASEAN Information Harbor Forum held in Nanning, capital of South China's Guangxi Zhuang Autonomous Region.

Beidou was designed and developed independently by China and is expected to serve global customers upon its completion in 2020.

Promoting the international usage of Beidou is part of the country's the Road and Belt Initiative. China has been cooperating with countries and regions along the Belt and Road routes, as a springboard for promoting this homegrown system across the globe.

According to Ma, key components of the Beidou system such as chips and antenna have reached international standards.

With smaller size and better function, the second-generation Beidou will be produced by the end of the year.

Many ASEAN countries have participated in the research and development of applications for the Beidou system, including Thailand, Malaysia and Indonesia.

Currently there are four global satellite navigation systems - the US-developed GPS, also the most widely used navigation system, China's Beidou, the EU's Galileo and Russia's Glonass.

@Beidou2020
 
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do all Chinese made smartphones support Beidou?
any other non Chinese brand that support Beidou other than Samsung?
I think Chinese gov should 'force' apple to implement Beidou on iPhone, considering how important China market to apple.
 
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do all Chinese made smartphones support Beidou?
any other non Chinese brand that support Beidou other than Samsung?
I think Chinese gov should 'force' apple to implement Beidou on iPhone, considering how important China market to apple.

I guess some brands like Huawei already supports it.

I agree, all phones sold in China must be obliged to support Beidou.

@cirr , @AndrewJin
 
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Satellite photo of the recent parade in Beijing on 3rd Sept. 2015.

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图1 资源三号卫星天安门阅兵日融合影像
(时间:2015年9月3日11时15分05秒,检阅进行中)
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图2 实践九号A卫星天安门阅兵日融合影像
(时间:2015年9月3日11时15分53秒,检阅进行中)
n195194.jpg
 
图3 高分二号卫星天安门阅兵日融合影像
(时间:2015年9月3日11时36分07秒,观礼台)
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图4 高分二号卫星天安门西侧阅兵日融合影像
(时间:2015年9月3日11时36分07秒,受阅装备驶离)
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图5 高分二号卫星天安门东侧阅兵日融合影像
(时间:2015年9月3日11时36分07秒,接送贵宾的大巴车)​
 
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China's Long March-6 Carrier Rocket Succeeds in First Trip
2015-09-20 09:23:05 CRIENGLISH.com Web Editor: Li Bin
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The Long March-6 carrier rocket lifts off from Taiyuan Satellite Launch Centre in north China's Shanxi Province at 7 a.m. Beijing time on September 20, 2015. [Photo: Xinhua]

China has successfully launched the country's first Long March-6 carrier rocket as well as 20 satellites on Sunday.

China Central Television (CCTV) reports that the carrier rocket lifted off from Taiyuan Satellite Launch Centre in north China's Shanxi Province at 7 a.m. Beijing time.

The 20 satellites, including nine amateur radio satellites, were developed by a number of universities and space research institutes across China.

The satellites separated from the rocket 15 minutes after blasting off from Taiyuan.

The Long March-6 carrier rocket is the country's new generation of rocket families, featuring light capacity and high-speed response.

It is also China's first carrier rocket that uses fuel free of toxicity and pollution.

Developed by the Shanghai Academy of Spaceflight Technology, the liquid-fuelled carrier rocket measures 29.3 meters in length and has a takeoff weight of 103 tons.

The light-lift rocket has only a modest lift capability of some 1080 kg.

However, the launch is crucial to China's new heavy-lift Long March-5 carrier rocket, an equivalent to the US-made Delta-IV Heavy.

The Long March-5 is set to boost its lift capacity by around three times and will be used to launch modules for the country's lunar project and space station.

The Long March-5 is scheduled to make its debut flight early next year.

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A distance view of Long March-6 carrier rocket flying to the sky. [Photo: Xinhua]
A successful beginning of a new space era !! :yahoo:
 
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Long March 6 (CZ-6)

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Can you tell me what does Long March 6 have over its predecessors?

For example I know it uses a new rocket engine, with a better fuel. But what else?

Is it really road mobile, that is can be launched from anywhere?
 
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Can you tell me what does Long March 6 have over its predecessors?

For example I know it uses a new rocket engine, with a better fuel. But what else?

Is it really road mobile, that is can be launched from anywhere?

Here

一箭20星创纪录,长征六号运载火箭今天7时1分成功发射

来源: 解放网 | 2015-09-20 07:30 | 作者:刘锟

一箭20星创纪录,长征六号运载火箭今天7时1分成功发射_时政_解放网

解放日报 解放网太原9月20日专电(特派记者 刘锟)北京时间9月20日7时01分,我国在太原卫星发射中心用全新研制的长征六号运载火箭,成功将20颗卫星发射升空,卫星顺利进入预定轨道,开创了我国一箭多星发射的新纪录。这也是我国新一代运载火箭的首次发射,标志着我国运载火箭应用进入新纪元。

  开展新一代运载火箭研制,是军工技术服务美丽中国建设、深化生态文明体制改革的重要举措。此举不但提高了我国空间进入能力,实现运载技术跨越式发展,缩小与世界先进国家差距,还实现了我国在大推力、高可靠性、高适应性、低成本、无毒无污染运载火箭领域的关键技术突破,对我国运载火箭后续发展具有里程碑意义。

  长征六号运载火箭由中国航天科技集团公司上海航天技术研究院抓总研制,于2009年8月正式批复立项。火箭全长29米,一级直径3.35米,二、三级直径2.25米,起飞推力1200千牛。长征六号运载火箭采用了全新的总体方案、结构形式、动力系统和电气系统,自主创新成果达几十项,发射可靠性提高到0.98,达到国际先进水平。

上海航天技术研究院相关专家表示,长征六号运载火箭首次采用了高压补燃循环无毒无污染液氧煤油发动机、“三平”测发模式,成功突破高精度控制技术、氧箱自增压技术、燃气滚控技术、箭地一体化快速测发技术等一系列关键技术,并按照“通用化、组合化、系列化”的设计思路,可进一步提高运载能力,有效提高国际商业发射市场竞争力,标志着我国在运载火箭现代化、模块化方面迈出了坚实一步。

  早在上世纪80年代,上海航天技术研究院首次在国内实现了一箭三星发射,后续长征二号丁、长征四号乙、长征四号丙也曾多次开展一箭多星的国内国际发射任务。专家表示,一箭多星发射可充分利用运载火箭的运载能力余量,经济便捷地将搭载卫星送入地球轨道,为卫星发射服务提供了多种选择模式,将有力促进微小卫星技术发展。

  此次长征六号首飞箭采用了一箭20星状态,将中国航天科技集团公司下属东方红卫星公司、深圳东方红海特卫星公司和国防科大、清华大学、浙江大学、哈工大等单位研制的20颗卫星送入了预定的轨道,在国内属于首次。

同时,为满足多星发射需求,长征六号火箭还在国内首次采用了冯卡门复合材料全透波卫星整流罩,使卫星整流罩具备了全向透波能力,有力改善全箭力学环境和卫星环境条件。上海航天通过对多星发射技术的探索,还形成了系列化、标准化的多星发射接口,为今后进一步降低卫星发射成本、提升多星发射能力奠定了技术基础。

另据透露,在长征六号研制基础上,上海航天还将研制新一代中型运载火箭,打造长征六号升级版,形成系列化产品,为宇航发射提供多样化选择。长征六号升级版有望在“十三五”期间实现首飞。

and here

世界军事论坛 - 解密“长征六号”首飞的幕后故事

解密“长征六号”首飞的幕后故事

中国航天再启新程

——专家解读长征六号运载火箭首飞任务

在长征六号运载火箭首飞任务圆满成功之际,长征六号运载火箭工程总设计师、中国航天科技集团公司总工程师孙为钢,长征六号火箭副总设计师李程刚,中国太原卫星发射中心总工程师助理任守福接受记者采访,解密“长征六号”首飞的幕后故事。

一、新型运载火箭新在哪?

长征六号是长征系列运载火箭家族的新成员,采用了全新的总体方案、全新的结构形式、全新的动力系统和全新的电气系统。简而言之,它“更有力”“更环保”“更快捷”“更精准”“更经济”,既符合世界运载火箭发展潮流,也是贯彻可持续发展国家战略。

长征六号火箭副总设计师李程刚介绍,火箭动力系统使用全新研制的两型液氧煤油发动机,其中一级火箭采用一台120吨液氧煤油发动机,二级火箭采用一台18吨液氧煤油发动机。液氧煤油发动机廉价环保,用途广泛,还能大幅提升火箭的运载能力。据了解,120吨液氧煤油发动机将中国火箭发动机单台推力提升了60%。

二、测试发射模式新在哪?

以往长征系列火箭执行发射任务,需要分段运输至发射场,再在塔架上完成各子级的垂直吊装总装和测试。而长征六号首飞任务,首次采用了“三平”加整体起竖测试发射模式——即水平整体测试、水平整体星箭对接、水平整体运输起竖发射。火箭在水平状态下在厂房内完成全箭总装、测试以及与卫星对接,而后,采用专门研制的运输起竖车将火箭水平运输至发射工位,翻转起竖后进行燃料加注和发射,大幅缩短了发射区操作时间和发射台占用时间。

太原卫星发射中心总工程师助理任守福介绍,为适应“三平”测发需要,专门设计了适应集火箭运输、起竖、发射脐带塔功能于一体的自行式整体运输起竖车的发射场设施,建设了液氧、煤油等新的加注设施,他们相继攻克液氧低温加注、多星调试安装等难题,共识别34项风险点,确保产品质量安全受控、地面设施设备稳定可靠。

三、卫星搭载方式新在哪?

此次长征六号运载火箭首飞,共搭载发射了中国航天科技集团公司、国防科技大学、清华大学、浙江大学、哈尔滨工业大学等单位研制的20颗微小卫星,创下中国航天一箭多星发射的新纪录。

长征六号运载火箭工程总设计师孙为钢介绍,此次搭载卫星品种多,数量从100公斤到几百克不等,主要用于空间应用与测量、新技术验证、新的航天器件验证。20颗卫星采用金字塔式分列三层,最底层安放5颗卫星,中间层有4颗主星,最上层是1颗卫星,在卫星与火箭分离后,其中多颗卫星再分别释放出子星。此次任务采取“灵巧末级”设计及“多星轨道周期控制方法”,防止大量卫星在释放时星箭和星星间碰撞。

孙为钢表示,微小卫星研制试验成本相对较低,参与门槛不高,学校或企业都可以支撑研发。据统计,此次任务有100余名在校学生参与到本次20颗卫星的研制工作中。孙为钢希望更多高校和青年人才参与到微小卫星研制试验工作中来,为中国航天事业积蓄新兴力量。

:coffee::D
 
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Can you tell me what does Long March 6 have over its predecessors?

For example I know it uses a new rocket engine, with a better fuel. But what else?

Is it really road mobile, that is can be launched from anywhere?
It is the strap on boaster on CZ-5 core. It will offer more superior thrust over its previous version by 60% and can act as a quick launch independent rocket of multi mini satelite.
 
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"A new model of China's carrier rocket Long March-6 carrying 20 micro-satellites blasts off from the launch pad at 7:01 a.m. from the Taiyuan Satellite Launch Center in north China's Shanxi Province, Sept. 20, 2015. The new carrier rocket will be mainly used for the launch of micro-satellites and the 20 micro-satellites will be used for space tests. (Xinhua/Yan Yan)"

China's new carrier rocket succeeds in first trip - Xinhua | English.news.cn

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Can you tell me what does Long March 6 have over its predecessors?

For example I know it uses a new rocket engine, with a better fuel. But what else?

Is it really road mobile, that is can be launched from anywhere?
It cannot be launched from anywhere, because it needs external special storage and equipment for the cryogenic fuel. However all the launch pad function and operation are integrated into the launch truck/vehicle that has a automatic driving function with 3-D positional precision within 5mm. LM-6+payload would be assembled, integrated, test and transported while horizontal. It require only 7 days of pre-launch preparation.

In another word, it is designed to have highly automated, simplified and streamlined launch operation for economical and fast launch in order to be commercially competitive.
 
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CZ-6: Where are the boosters or fins?

In my view, the most radical aspect of the CZ-6 rocket (which looks like it only has one engine) is the lack of boosters or fins. The control units or surfaces are missing.

Is China using gyroscopic precession?
 
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CZ-6: Where are the boosters or fins?

In my view, the most radical aspect of the CZ-6 rocket (which looks like it only has one engine) is the lack of boosters or fins. The control units or surfaces are missing.

Is China using gyroscopic precession?


many rockets don't have fins, for example falcon 9, earlier CZ-2's, more current CZ-3C. the american saturn-5 rocket had fins but they later found out they didn't need it because the rocket was stable enough and actually planned to remove the fins to save weight but then the whole programs was pretty much canceled before that can happen.
 
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