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[专题] SpaceX综合消息:政策计划人事财务法律等:最近:裁员,打官司

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cmj9808 发表于 2011-9-2 12:10 | 显示全部楼层
shaolin1254 发表于 2011-9-2 12:39 | 显示全部楼层
cmj9808 发表于 2011-9-2 12:10
Mark Bitterman上任两个月后辞职

http://www.spacenews.com/venture_space/spacex-lobbyist-bitterman ...

辞职原因
resigned “for personal reasons — family obligations that require more time and attention than the demands of this job would allow,”


感觉有点言不由衷的意思
cmj9808 发表于 2011-9-10 13:01 | 显示全部楼层
负责航天员安全的SpaceX副总裁Ken Bowersox在接受SpaceNews记者采访时承认,10年12月发射Dragon C1的第二枚Falcon 9经历了一次发动机异常,原因是一台发动机的燃料-氧化剂混合比错误,“富”氧燃烧环境导致燃气发生器内温度升高,并最终引发关机。此类故障很可能导致涡轮泵损坏。

SpaceNews并未提供过多的信息,尤其是发生故障的时间。可以确定的是发生故障的引擎属于助推级,因此这枚Falcon 9很可能在非预期的情况下展示了一次engine-out ability。同时,这也证明之前被SpaceX起诉的Valador Inc.所听到的“谣言”并非空穴来风,只是不够准确罢了。

SpaceX Acknowledges Falcon 9 Engine Anomaly
“I’d call it an oxidizer-rich shutdown,” former NASA astronaut Ken Bowersox, SpaceX’s vice president of astronaut safety and mission assurance, told Space News in a Sept. 9 interview. “So because of that, when you get that mixture change happening, the temperatures can go up higher than you want inside the gas generator.”

Bowersox added that “those temperatures could have damaged the turbines in the turbopump.” That presents an obstacle for SpaceX, which eventually intends to reuse the nine Merlin engines that power the Falcon 9.

http://www.spacenews.com/civil/spacex-acknowledges-falcon-engine-anomaly-during-latest-launch.html
cmj9808 发表于 2011-9-13 19:18 | 显示全部楼层
cmj9808 发表于 2011-9-10 13:01
负责航天员安全的SpaceX副总裁Ken Bowersox在接受SpaceNews记者采访时承认,10年12月发射Dragon C1的第二枚 ...

SpaceX的发言人Kirstin Grantham解释了Bowersox之前关于引擎异常的发言,燃气发生器温度升高的原因是关机后煤油比液氧先耗尽,并非发生了预料之外的关机,对于任务本身没有影响,只是影响了引擎的复用。SpaceX在任务结束后即已通报NASA,并对算法(Depletion algorithm)作了修改以确保下次液氧比煤油先耗尽。

SpaceNews也已对之前报道的内容进行了更新,So, no big deal.

What Bowersox said, but did not make it into the current version of the article, was that there was no premature shutdown of the engine.

The engines did not fail. The Merlin engine has a robust design that can easily withstand this type of event.

There was no impact on mission success. The last mission successfully achieved all mission objectives.

This would be a problem for the long term goal of reusability as engines would need to be repaired before they could be used again.

However, the issue was easily resolved. To improve the potential of reusing engines, and to make the shutdown process as predictable as possible, SpaceX has made a small change so that the engines will run out oxidizer before running out of fuel.

SpaceX discussed the issue with NASA and resolved it to their satisfaction months ago. SpaceX completed a full post-flight report on all indications from Falcon 9 flight 2. That report was distributed to NASA officials. NASA personnel were briefed and the situation was explained to NASA’s satisfaction.

Kirstin Grantham, SpaceX Spokeswoman

cmj9808 发表于 2011-9-29 13:00 | 显示全部楼层
本帖最后由 cmj9808 于 2011-9-29 13:07 编辑

twitter消息,SpaceX总裁Gwynne Shotwell在AIAA Space 2011上的发言中提到:

1)公司雇员已超1500人(PS:如果按平均年薪10万美元算,公司每年在人头上的支出就要1.5亿美元)

2)SpaceX仍在寻求建立一个完全用于商业发射的发射场,目前尚未决定地点(PS:德克萨斯目前排第一顺位)

3)由于小型卫星发射市场的萎缩,明年将决定Falcon 1的前途,其中一个可能是作为靶弹(PS:这个部分要归咎于它的兄弟Falcon 9,因为很多原计划搭载F1的小卫星都改作F9的次级载荷发射)

4)最近炒的火热的Grasshopper VTVL demonstrator的目的是为了重复使用(PS:说的仍不够明确,但应该是指助推级回收)

5)由于M-12M事故引起俄罗斯方面的推迟,COTS demo2/3具体时间仍未确定,目前有5艘Dragon正在组装。

以上均来自http://twitter.com/#!/jeff_foust

点评

VTVL不容易,没有降落伞(?),9个发动机一起用VTVL回收,那是什么景象和难度?  发表于 2011-9-29 13:10
cmj9808 发表于 2011-9-29 13:12 | 显示全部楼层

Mark Bitterman进了OSC和SpaceX的对手公司ULA,职位和之前差不多:Vice President of Washington D.C. Operations

PS:这位老兄在美国仅有的三个造火箭的公司里转了一圈,真是抢手啊
cmj9808 发表于 2011-9-29 13:24 | 显示全部楼层
@hkhtg090201 VTVL不容易,没有降落伞(?),9个发动机一起用VTVL回收,那是什么景象和难度?
——————————————————————
从目前的信息看,可能有降落伞且只有一台Merlin 1D

Grasshopper的目的是进行Falcon 9的助推级再入开伞后的姿控模拟。之前两次发射的助推级回收都失败了,原因就是单靠降落伞无法控制助推级的姿态,导致最终解体。看起来SpaceX打算在助推级与上面级分离后,重新启动9台Merlin 1中的一台(应该是中间那台)进行主动姿态控制。但具体的开机时间是在开伞前还是开伞后不太清楚,但从Grasshopper目前的飞行高度看只能模拟开伞后的情况。
shaolin1254 发表于 2011-9-29 13:34 | 显示全部楼层
cmj9808 发表于 2011-9-29 13:12
Mark Bitterman进了OSC和SpaceX的对手公司ULA,职位和之前差不多:Vice President of Washington D.C. Op ...

这位老兄搞的是类似于交流、游说的工作,几十年的人脉还在,工作不是问题。

这位老兄退休后可以出书写下自己几十年的航天游说经历,这个相当有意思啊
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 楼主| hkhtg090201 发表于 2011-10-1 10:52 | 显示全部楼层
本帖最后由 hkhtg090201 于 2011-10-1 13:37 编辑

马斯克讨论SpaceX公司,火星殖民等等
Musk Discusses SpaceX, Mars Settlement and More
September 30, 2011

      SpaceX CEO Elon Musk addressed the National Press Club in Washington, D.C. yesterday. The rocket company founder laid out his vision for humans becoming a multi-planet species, discussed SpaceX’s present and future plans, and took questions about the international launch market, global change and the collapse of the solar energy company Solyndra.
      SpaceX公司首席执行官艾伦马斯克在华盛顿全国新闻俱乐部发表演讲。这位火箭公司创始人(醉眼惺忪地)展示了他的使人类成为一个多行星物种的视野,讨论了SpaceX公司现在和未来的计划,并回答了有关国际发射市场、全球变化和太阳能公司Solyndra公司的崩溃的问题。

My notes are below. You can also watch videos of his address here.
下面是说明….
Reusable Falcon 9 rocket
可重复使用猎鹰火箭
  • Fully reusable, rapid turnaround rocket
  • Falcon 9 costs: $50 million for rocket, about $200,000 in fuel
    Falcon 9火箭成本:5000万$,燃料大约占20万$.
  • Could reduce costs by 100 fold through reuse
    通过重复使用,可以减少100倍的成本
  • There would be additional costs of preparing stages for relaunch, etc.
  • Process works on paper and in simulations – now need to make it work in practice
  • Animation is mostly accurate – was completed before the analysis was done, also protecting proprietary information
  • Effort does not take away from COTS and CCDev work

SpaceX Future Plans
SpaceX 未来计划
  • SpaceX has $3B in satellite launch orders
    (现在)有30亿美元的卫星发射定单
  • Moderately profitable over the last few years
    过去几年适度盈利
  • Primary launch bases at Cape Canaveral and Vandenberg — will focus on military and NASA missions there
    主发射基地在卡纳维拉尔角和范登堡空军基地的 - 那里将侧重于军事和美国宇航局任务
  • Want to develop a purely commercial launch base elsewhere to focus on those missions
    想要在其他地方开发一个纯粹的商业发射基地,把重点放在那些任务


Dragon Mission to ISS
到ISS的龙(飞船)任务
  • Launch delayed from end of November until probably January due to Progress freighter crash
  • Crew rotation delayed — need to have a trained crew to deal with berthing Dragon to station — won’t have that until end of December


Can you fast track Dragon development to launch crews to ISS in 2 years or so?
你能快速跟进(龙飞船)的开发,在2年左右的(时间)向国际空间站发射载人乘员组吗?
  • If NASA was willing to accept launching a crew on same level of safety as the space shuttle, we could launch astronauts on the next flight — fully capable of biological cargo carrying
    如果美国宇航局愿意接受和航天飞机的安全同级别的载人发射,我们可以在下次飞行中发射宇航员 -- 完全的生物货运能力。
  • Dragon has no launch escape system
    龙飞船没有发射逃逸系统
  • Will take about two to three years to dev and qualify a launch escape system
    将打算用2~3年开发逃逸系统并使之合格
  • Escape thrusters are built in the side wall of spacecraft — can use those for propulsive landings
    逃逸推进安装在飞船的外围 -- 能使用这些着陆。
  • In discussions with NASA on using Dragon as general science delivery platform for missions to Mars and other bodies
    在与美国宇航局讨论使用龙飞船(作为)普通的科学递送平台,(执行)火星探测任务和其他的bodies.


International Launch Market
国际发射市场
  • U.S. has been uncompetitive in international launch market for several years
  • Russia has been the leader, followed by Europe, India and China (China is coming up quickly)
  • U.S. has been improving due to SpaceX
  • U.S. has the most competitive launch due to SpaceX

Reliance Upon Russia for ISS Transportation

    依靠俄罗斯为国际空间站做运输
  • Russian Soyuz rockets are very reliable
  • In the long term, reliability concerns because many Russian rocket experts have retired
  • More profitable to go into oil and gas industry
  • “So that expertise is tailing off, and I think that may lead to decreased reliability for Russian rockets in the future. Hopefully it doesn’t.”
  • If you look at Russian rocketry, no significant developments since the collapse of the Soviet Union in 1991
  • As soon as that technology level is exceeded, then they’re rendered redundant and they’re no longer able to compete
  • Without any changes, Russia has “5 to 10 years” of launch vehicle competitiveness left

Competition From China
来自中国的竞争
    “China is the serious competitor long term”

  • China said it is going after SpaceX as a competitor
  • Chinese program is heavily subsidized, difficult to compete with
  • SpaceX files the minimum number of patents possible because there’s a history in China of absconding with IP
  • Almost impossible to enforce patents with the Chinese government
  • “I’m quite confident we can take on China.”

NASA’s Role
NASA的角色
  • SpaceX wouldn’t be where it is today without NASA
  • Both NASA’s historical contribution and its funding of SpaceX through COTS and CCDev
  • U.S. still leads the world in space spending
  • Space budgets will shrink in years ahead

U.S. Military Launch Contracts
美国军方发射合同
  • U.S. Air Force wants to extend the sole source monopoly by Boeing and Lockh