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[美国发射] 2020年,Viasat-3 02将由Atlas V 551自卡角发射

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Flying_Pencil 发表于 2018-9-10 20:56 | 显示全部楼层 |阅读模式
任务简报
发射时间: 2020
运载工具: Atlas V 551
有效载荷(国籍): 美国
发射场(国籍): 卡纳维拉尔角(KSC)
工位: SLC41
状态: 发射预报
轨道类型及参数: GTO
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ULA自年初独立后首个商业发射订单签署
https://forum.nasaspaceflight.com/index.php?topic=46324.msg1854449;topicseen#new

Presser:

  VIASAT SELECTS UNITED LAUNCH ALLIANCE’S PROVEN ATLAS V ROCKET FOR COMMERCIAL SATELLITE LAUNCH



PARIS, Sept. 10, 2018 – Global communications company, Viasat Inc., (Nasdaq: VSAT) announced today it selected United Launch Alliance’s (ULA’s) proven Atlas V vehicle to launch one of its ViaSat-3 satellite missions. This is the first commercial contract ULA has directly signed since assuming responsibility for the marketing and sales of the Atlas V launch vehicle from Lockheed Martin Commercial Launch Services earlier this year.



The Viasat mission will carry one of the ViaSat-3 series spacecraft and is scheduled to launch in the 2020 - 2022 timeframe from Space Launch Complex-41 at Cape Canaveral Air Force Station in Florida. This mission will launch aboard an Atlas V 551 configuration vehicle, the largest in the Atlas V fleet. The 551 configuration provides the performance to deliver a ViaSat-3 satellite into a high-energy geostationary transfer orbit where it can begin on-orbit operations faster than with other available launch vehicles.



The selection of Atlas V for one of the ViaSat-3 missions is the next step in implementing Viasat’s integrated launch strategy which is designed to ensure the on-time launch of all of the ViaSat-3 spacecraft through launch vehicle diversity and an integrated approach to launch planning. Viasat will announce specific mission assignments for each of the contracted launch vehicles at a later date.



“ULA continues to demonstrate schedule certainty and flexibility, as well as be a trustworthy and reliable business partner. This coupled with unmatched Atlas V launch vehicle reliability and tailored mission design capabilities made ULA a strong partner for a ViaSat-3 launch mission,” said Dave Ryan, president, Space Systems at Viasat. “ULA is known for providing an innovative launch solution that is focused on mission success, which will allow us to meet our business objectives to bring high-speed, high-quality broadband connectivity to meet end-user demand.”

            

“ULA’s Atlas V launch vehicle is the most reliable launch vehicle in the world and we could not be more pleased that Viasat, a leading satellite broadband innovator, has recognized the value the Atlas V can offer, and decided to select this rocket to launch its critical commercial communications satellite,” said Tory Bruno, ULA’s president and CEO.



The ViaSat-3 class of Ka-band satellites is expected to provide unprecedented capabilities in terms of service speed and flexibility for a satellite platform. The first two satellites will focus on the Americas and on Europe, Middle East and Africa (EMEA), respectively, with the third satellite planned for the APAC region, completing Viasat's global service coverage. Each ViaSat-3 class satellite is expected to deliver more than 1-Terabit per second of network capacity, and to leverage high levels of flexibility to dynamically direct capacity to where customers are located.



Atlas V has launched 78 missions with 100 percent success including 17 successful commercial missions. The workhorse rocket also delivered critical science missions for NASA such as Mars Science Lab, Pluto New Horizons and Mars InSight, and critical missions for the Department of Defense including Space-Based Infrared System (SBIRS) and Wideband Global SATCOM (WGS).
璇瑢子 发表于 2018-9-11 07:01 | 显示全部楼层
这是原来已经签的那颗还是Viasat 3的第三颗?
 楼主| Flying_Pencil 发表于 2018-9-11 12:35 | 显示全部楼层
璇瑢子 发表于 2018-9-11 07:01
这是原来已经签的那颗还是Viasat 3的第三颗?

还没决定是第二颗还是第三课
cmj9808 发表于 2018-9-11 19:43 | 显示全部楼层
viasat-3的三颗卫星选了三种火箭发射,Ariane V,Atlas V和Falcon heavy
qsayy 发表于 2018-9-12 07:39 | 显示全部楼层
cmj9808 发表于 2018-9-11 19:43
viasat-3的三颗卫星选了三种火箭发射,Ariane V,Atlas V和Falcon heavy

有趣,很好奇这三颗发射价格各是多少。
cmj9808 发表于 2018-9-12 18:21 | 显示全部楼层
有点意思,这颗星(的轨道)可能有特殊要求,Ariane和SpX都没有竞标

According to statements by SpaceX's COO and ArianeSpace's CEO neither company bid on this launch.

https://twitter.com/pbdes/status/1039537710434840576
vulcan_good 发表于 2018-9-12 18:30 来自航空航天港手机版! | 显示全部楼层
cmj9808 发表于 2018-9-12 18:21
有点意思,这颗星(的轨道)可能有特殊要求,Ariane和SpX都没有竞标



难道需要直送到更高的轨道上?
cmj9808 发表于 2018-9-12 18:34 | 显示全部楼层
vulcan_good 发表于 2018-9-12 18:30
难道需要直送到更高的轨道上?

不知道相对于A5和FH发射的另外两颗增加了什么特殊需求,有可能是高近地点的GTO
跆拳道大灰狼 发表于 2018-9-12 22:31 | 显示全部楼层
Viasat-3的设计带宽是1Tbps,是Vissat-2的3倍,ViaSat-1卫星造价4.9亿美元;而容量两倍于ViaSat-1的ViaSat-2造价5.3亿美元,费用稍有增长,其中制造费用3.6亿美元,发射和保险费1.7亿美元。Vissat-3可以据此估算。
另外我国去年发射的高通量卫星中星16是20Gbps带宽,理论上Vissat-3是中星16的50倍,追赶之路任重而道远。
跆拳道大灰狼 发表于 2018-9-12 22:31 | 显示全部楼层
ViaSat-1卫星容量140Gbps,而ViaSat-2卫星容量300Gbps
ssizz 发表于 2018-9-12 22:39 | 显示全部楼层
跆拳道大灰狼 发表于 2018-9-12 22:31
Viasat-3的设计带宽是1Tbps,是Vissat-2的3倍,ViaSat-1卫星造价4.9亿美元;而容量两倍于ViaSat-1的ViaSat- ...

实践十八号是70Gbps,可惜掉海里了
跆拳道大灰狼 发表于 2018-9-12 22:50 | 显示全部楼层
ssizz 发表于 2018-9-12 22:39
实践十八号是70Gbps,可惜掉海里了

有信息来源么?比较权威的东五和实践指标好像不太好搜。
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