维基百科

无人驾驶着陆船

无人驾驶着陆船（英文：Autonomous spaceport drone ship，简称：ASDS）是从甲板驳船衍生的远洋船，配备了位置保持轮机和大型着陆平台，并由自主机器人控制。 航天公司SpaceX委托建造这种船只，以便在海上回收火箭的第一级推进器，以执行运载火箭升至轨道或行星际轨道后载运的燃料不足以返回发射场的任务。

无人驾驶着陆船
名称
地点
简称ASDS
所属SpaceX
发射台数4个远洋登陆平台（2个活跃； 1个正在生产； 1个已退役）
“请阅读说明书”号 (I)着陆历史
状态已退役
着陆2 (0次成功, 2次失败)
首次着陆2015年1月10日 (CRS-5)
末次着陆2015年4月14日 (CRS-6)
相关火箭
“当然我还爱你”号着陆历史
状态活跃
着陆45 (39次成功, 6次失败)
首次着陆2016年3月4日 (SES-9)
末次着陆2021年5月4日 (Starlink 25)
相关火箭
新“请阅读说明书”号 (II)着陆历史
状态活跃
着陆16 (16次成功, 1次失败)
首次着陆2016年1月17日 (Jason-3)
末次着陆2021年4月29日 (Starlink 24)
相关火箭
“缺乏了个稳重”号着陆历史
状态活跃
首次着陆2021年8月29日 (CRS-23)

SpaceX有两艘可操作的无人船。 “请阅读说明书”号（Just Read the Instructions）与“当然我还爱你”号（Of Course I Still Love You），它们都在卡纳维尔角的大西洋发射。 JRtI于2016年至2019年在太平洋为范登堡号发射场营运，然后于2019年8月离开洛杉矶港。截至2020年6月2日，有43架猎鹰9号试图降落在无人船上，其中34架成功（78.6％）。还有一艘“缺乏了沉重度”号（A Shortfall of Gravitas，轻浮不正经之意，又译重力不足，此处为双关）仍在建造中。

ASDS是SpaceX目标中的关键早期营运组件，旨在通过“全面且快速的可重复使用性”[1]显著降低太空发射服务的价格，并作为SpaceX承诺进行多年期可重复使用的火箭开发计划的一部分进行开发技术。进入地球静止轨道或超过逃逸速度的任何猎鹰飞行都需要在海上降落，这在SpaceX的发射任务中占了大约一半。

历史

现役着陆船

“当然我还爱你”号(Of Course I Still Love You)

 
停泊于Marmac 304远洋驳船上的“当然我还爱你”号

自2015年初以来，第二艘ASDS着陆船“当然我还爱你”号（OCISLY）一直在路易斯安纳州的一家造船厂建造，使用另一艘船体-Marmac 304-为东海岸的发射服务。它是第一架“请阅读说明书”号的替代品，于2015年6月下旬进入猎鹰19航班19的营运服务。截至2015年6月，其母港为佛罗里达州杰克逊维尔，[2][3]但于2015年12月之后，它在卡纳维尔港向南转移了160英里（260公里）。

尽管该船的尺寸与第一批ASDS几乎相同，但进行了一些改进，包括在后部货柜和登陆甲板之间竖立了一个钢制防爆墙。该船已经准备好接受CRS-7任务的第一阶段着陆测试，该测试于2015年6月28日发射失败。[3]

2016年4月8日，发射“龙号CRS-8”飞船的第一阶段成功降落在OCISLY上，这也是有史以来第一次无人控制降落。[4]

2018年2月，猎鹰重型试验飞行的中央核心在OCISLY附近爆炸，炸毁了无人船上的四个推进器中的两个。[5]从Marmac 303驳船上拆除了两台推进器，以修理OCISLY。[6]

2020年5月30日，Demo-2任务的第一节推进器降落在OCISLY，Demo-2任务标志着自2011年航天飞机最后一次飞行以来美国再次从美国本土在美国火箭上发射太空人升空，这也是SpaceX火箭首次发射太空人升空。[7][8]这标志着有史以来第一次火箭的第一节将太空人送入太空，然后安全降落。

着陆任务

第一次飞行测试是2015年1月10日，当时SpaceX进行了下降控制飞行测试，将猎鹰9号飞行14的第一阶段降落到固体表面上，然后将其压缩后的有效载荷放到地球轨道上。SpaceX预计，在首次着陆尝试之前，成功着陆在平台上的可能性将为50％或更低。着陆从进行着陆测试变成了日常任务。

编号 日期 任务 ASDS着陆任务描述 着陆结果 图片
1 2015年1月10日 SpaceX CRS-5 SpaceX attempted a landing during SpaceX CRS-5 on Just Read the Instructions on 10 January 2015. Many of the test objectives were achieved, including precision control of the rocket's descent to land on the platform at a specific point in the North Atlantic Ocean and a large amount of test data was obtained from the first use of grid fin control surfaces used for more precise reentry positioning. However, the landing was a hard landing.[9] The SpaceX webcast indicated that the boostback burn and reentry burns for the descending first-stage occurred, and that the descending rocket then went "below the horizon," as expected, which eliminated the live telemetry signal. Shortly thereafter, SpaceX released information that the rocket did get to the drone spaceport ship as planned, but "landed hard ... Ship itself is fine. Some of the support equipment on the deck will need to be replaced."[9][10] 失败
2 2015年2月11日 DSCOVR Just Read the Instructions was towed to sea for the Deep Space Climate Observatory satellite launch on 11 February 2015 but, it was not used for a landing attempt. Ocean conditions of 7米（23英尺）-high waves interfered with the ASDS recovery duties for the landing, so the ship returned to port and no landing test occurred. SpaceX executed a soft landing in the sea to continue data gathering for future landing attempts. The soft landing was successful, Elon Musk tweeted that it landed with a lateral accuracy of 10米（33英尺） away from the target and in a vertical position.[11] No attempt
3 2015年4月14日 SpaceX CRS-6 On 14 April 2015, SpaceX made a second attempt during SpaceX CRS-6 to land a Falcon first-stage on the Marmac 300 drone ship Just Read the Instructions. News from Elon Musk suggested that it made a hard landing.[12] He later clarified that it appeared to have made a vertical landing on the ship, but then toppled over due to excessive remaining lateral momentum.[13] 失败
 
CRS-6 first-stage booster landing attempt on ASDS
4 2015年6月28日 SpaceX CRS-7 In order to prepare for SpaceX CRS-7 on 28 June 2015, the then new ASDS, Of Course I Still Love You, was towed out to sea to prepare for a third landing test. This was its first operational assignment.[3] However, the Falcon launch rocket disintegrated before first-stage shutdown so the mission never progressed to the point where the controlled-descent test could happen.[14] No attempt
5 2016年1月17日 Jason-3 In January 2016, SpaceX indicated that there would be an attempt to land on the then new ASDS, reusing the name Just Read the Instructions (JRtI), located on the west coast following the launch of Falcon 9 Flight 21 scheduled for 17 January 2016.[15] JRtI was located about 200英里（320千米） downrange from the launch site in the Pacific Ocean. Musk reported that the first stage did successfully soft-land on the ship, but a lockout latch on one of the landing legs failed to latch and the first stage fell over, causing a breach of the propellant tanks and a deflagration on impact with the drone ship.[16][17][18][19][20] 失败
 
First stage of Falcon 9 Flight 21 descending to the ASDS.
6 2016年3月4日 SES-9 During a launch of a heavy communications satellite on Falcon 9 Flight 22 on 4 March 2016, SpaceX performed an experimental descent and landing attempt with very low propellant margins. For the first time, and in order to reduce the propellant required, SpaceX attempted the landing burn with three engines. SpaceX had indicated that the test was unlikely to result in a successful landing and recovery. In the event, one engine flamed out early, and the rocket hit Of Course I Still Love You (OCISLY)'s deck surface with considerable velocity, destroying the rocket and causing damage to the drone ship's deck.[21] By 21 March 2016, the deck of the drone ship was nearly repaired.[22] 失败
7 2016年4月8日 SpaceX CRS-8 The Falcon 9 first-stage performed a successful landing on OCISLY in the Atlantic Ocean off the coast of Florida at T+9 minutes and 10 seconds after liftoff of SpaceX CRS-8,[23] the first-ever successful landing of a first stage on an Autonomous Spaceport Drone Ship.[24] The rocket was successfully affixed to the barge for the maritime transport portion of the journey back to port, and successfully completed its journey, entering Port Canaveral early in the morning on 12 April 2016.[24] 成功
 
The first time that the first stage of a Falcon 9 landed on a drone ship.
8 2016年5月6日 JCSat-14 SpaceX landed the first stage of the Falcon 9 on OCISLY during the JCSat-14 mission on 6 May 2016, its second time successfully landing on a drone ship at sea, and its first time recovering a booster from a high-velocity (GTO) mission.[25] 成功
 
9 2016年5月27日 Thaicom 8 SpaceX landed the first stage of a Falcon 9 on OCISLY during the Thaicom 8 mission, its third time successfully landing on a drone ship at sea.[26] 成功
 
10 2016年6月15日 ABS-3A/Eutelsat 115 West B SpaceX failed to land the first stage of the Falcon 9 on OCISLY during the Asia Broadcast Satellite/Eutelsat mission.[27] Elon Musk tweeted that one of the three engines had low thrust, and when the rocket was just off the deck, the engines ran out of oxidizer.[28] 失败
11 2016年8月14日 JCSAT-16 Falcon 9's 28th flight propelled the Japanese JCSAT-16 telecommunications satellite to a geosynchronous transfer orbit on 14 August 2016. The first stage re-entered the atmosphere and during the night landed vertically on OCISLY, positioned in the Atlantic Ocean nearly 400 miles from the Florida coastline; unlike previous successful landings, this landing-burn only used one engine, not three.[29] 成功
 
12 2017年1月14日 Iridium NEXT-1 The Falcon 9 first stage landed on the Pacific Ocean ASDS JRtI during the Iridium NEXT-1 mission.[30][31] This marked the first successful landing on JRtI and the first landing in the Pacific Ocean.[32][33] 成功
 
13 2017年3月30日 SES-10 The Falcon 9 first stage landed on OCISLY during the SES-10 launch. This was the first successful launch and landing of a previously flown orbital booster. 成功
 
14 2017年6月23日 BulgariaSat-1 The Falcon 9 first stage landed on OCISLY during the BulgariaSat-1 launch. This was the second successful launch and landing of a previously flown orbital booster. This was also the first booster to have landed on both active drone ships. While the landing was considered a success, the booster was "slammed sideways" and suffered a 'hard landing' which resulted in 'most of the emergency crush core being used'. 成功
 
15 2017年6月25日 Iridium NEXT-2 猎鹰9号的第一级推进器在Iridium-2任务期间降落于JRtI。 成功
16 2017年8月24日 福尔摩沙卫星五号 猎鹰9号的第一级推进器在福尔摩沙卫星五号发射期间降落在JRtI上。 成功
 
17 2017年10月9日 Iridium NEXT-3 猎鹰9号的第一级推进器在Iridium-3任务期间降落于JRtI。 成功
18 2017年10月11日 SES-11 猎鹰9号的第一级推进器在SES-11任务期间降落于OCISLY。 成功
19 2017年10月30日 Koreasat 5A 猎鹰9号的第一级推进器在Koreasat 5A任务期间降落于OCISLY。 成功
20 2018年2月6日 Falcon Heavy Test Flight On 6 February 2018, the central core from the Falcon Heavy Test Flight attempted a landing on OCISLY. There was not enough TEA-TEB igniter remaining and only the centermost of the three engines required ignited during the landing burn. The core hit the water near the drone ship at over 300 mph and was destroyed. The explosion of the central core upon impact also damaged two of the thrusters on the drone ship. The side boosters successfully landed at Landing Zones 1 and 2. The loss of the central core did not impact SpaceX operations since it was from an older generation of the Falcon 9 not intended to be reused.[5] 失败
21 2018年3月6日 Hispasat 30W-6 On 6 March 2018, a Falcon 9 Full Thrust carrying the Hispasat 30W-6 communications satellite for Hispasat of Spain was originally supposed to attempt a landing, as the first stage was programmed to do the landing. However, due to sea conditions considered to be unfavorable, the drone ship was left at the port. The first stage did its pre-programmed maneuvers, but did not attempt to land.[34] No attempt
22 2018年4月18日 TESS The Falcon 9 first stage landed on OCISLY during the TESS mission and was the 13th successful drone ship-based recovery.[35] 成功
23 2018年5月11日 Bangabandhu-1 The Falcon 9 Block 5 first stage landed on OCISLY during the Bangabandhu-1 mission and was the first flight of a Block 5 booster and upper stage. It was the overall 25th successful recovery of a booster. 成功
24 2018年7月22日 Telstar 19V 猎鹰9号的第一级推进器在Telstar 19V任务期间降落于OCISLY。 成功
25 2018年7月25日 Iridium 7 猎鹰9号的第一级推进器在Iridium 7任务期间降落于JRtI。 成功
26 2018年8月7日 Merah Putih 猎鹰9号的第一级推进器在Merah Putih任务期间降落于OCISLY。 成功
27 2018年11月15日 Es'hail-2 猎鹰9号的第一级推进器在Es'hail-2任务期间降落于OCISLY。 成功
 
28 2018年12月3日 SSO-A 猎鹰9号Block 5第一级推进器在航天SSO-A任务期间降落在JRtI上，这是助推器首次成功降落3次。 成功
 
29 2019年1月11日 Iridium 8 猎鹰9号Block 5的第一级推进器B1049在Iridium 8任务期间降落于JRtI。 成功
30 2019年2月22日 Nusantara Satu/Beresheet/ S5 Falcon 9 block 5 first stage B1048 landed on OCISLY during the Nusantara Satu, Beresheet & S5 mission. 成功
 
31 2019年3月2日 SpX-DM1 Falcon 9 block 5 first stage B1051.1[36] landed on OCISLY during the SpX-DM1 (SpaceX Demonstration Mission 1). 成功
 
32 2019年4月11日 Arabsat-6A Falcon Heavy block 5 first stage's center booster B1055.1 landed on OCISLY. This was the first successful landing of a center booster used in a Falcon Heavy rocket. The side boosters also landed on their respective ground pads.[37] However, the recovery team was unable to secure the center booster onto the drone ship due to rough seas and the core was lost at sea.[38] 成功
 
The booster before tipping over during transport
33 2019年5月4日 SpaceX CRS-17 Falcon 9 first stage B1056.1 landed on OCISLY during the SpaceX CRS-17 mission. The landing was originally scheduled for Landing Zone 1, but was switched after an explosion in a test of a Crew Dragon capsule at LZ1.[39] The launch of CRS-17 was delayed due to generator issues on the drone ship.[40] 成功
34 2019年5月24日 星链 L0 猎鹰9号第一级推进器B1049.3在星链L0任务期间降落在OCISLY。[41] 成功
35 2019年6月25日 Space Test Program Flight 2 由于缺乏对中央发动机向量推力的控制，STP-2任务中的猎鹰重型中央推进器无法成功降落在OCISLY上，而两侧推进器则成功降落在地面着陆平台上。[42] 失败
36 2019年11月11日 星链 L1 猎鹰9号的第一级推进器B1048.4在第二批Starlink任务中降落在OCISLY，这是猎鹰9号助推器首次进行第四次飞行并着陆。[43] 成功
37 2019年12月5日 SpaceX CRS-19 在商业补给任务SpaceX CRS-19发射升空后，猎鹰9号的第一级推进器B1059.1成功降落在OCISLY。这是该助推器的首次飞行和降落。[44] 成功
38 2019年12月16日 JSAT-18 在发射Kacific-1 / JCSAT-18通信卫星之后，猎鹰9号的第一级推进器B1056.3成功地降落在OCISLY，这是该助推器的第三次飞行和降落。[45] 成功
39 2020年1月7日 星链 L2 在Starlink L2发射升空之后，猎鹰9号的第一级推进器B1049.4成功地降落在OCISLY，这是Starlink的第三批卫星。[46] 成功
40 2020年1月29日 星链 L3 在星链 L3发射之后，猎鹰9号的第一级推进器B1051.3第三次成功着陆于OCISLY，这是从佛罗里达州卡纳维拉尔角空军基地SLC-40发射的第四批60颗Starlink卫星。[47] 成功
41 2020年2月17日 星链 L4 猎鹰9号第一级推进器B1056.4在第五批60颗卫星的星链 L4任务中发射升空后降落在水上。第一级助推器未能在无人船上降落，这是经飞行验证过之助推器的首次降落失败。[48] 失败
42 2020年3月18日 星链 L5 猎鹰9号的第一级推进器B1048.5在发射过程中出现发动机异常后未能在OCISLY着陆。在2020年3月15日，由于发动机功率检查期间数据不足而导致在T-0s时中止发射[49]，该次发射任务被推迟到2020年3月18日。在T + 2：22时发生了发动机停机，这是自CRS-1以来猎鹰9号发生的第二次停机。据推测，助推器可能在大气中破裂或坠入海洋。埃隆·马斯克（Elon Musk）稍后在推特上证实，少量异丙醇被困在感测器的死角中，并在飞行过程中被点燃。[50] 失败
43 2020年4月22日 星链 L6 猎鹰9号第一级推进器B1051.4成功降落在OCISLY。这是该助推器的第四次发射与着陆。[51] 成功
44 2020年5月30日 载人龙飞船示范2号 在Demo-2发射后，猎鹰9号的第一级推进器B1058.1成功着陆于OCISLY。这是SpaceX的第一个载人飞行任务，也是第一个将人类送入轨道并成功返回地球的猎鹰9号第一级推进器。[52] 成功
45 2020年6月3日 星链 L7 猎鹰9号第一级推进器B1049.5在发射星链L7任务后成功降落在JRTI上，这是第二枚成功重复飞行五次的猎鹰推进器。[53] 成功
46 2020年6月13日 星链 L8 猎鹰9号第一级推进器B1059.3成功降落在OCISLY上。[54] 成功
47 2020年6月30日 GPS III SV03 猎鹰9号的第一级推进器B1060.1成功着陆在JRTI上。[55] 成功
48 2020年7月20日 ANASIS-II 已经在载人龙飞船示范2号任务中使用过的猎鹰9号第一级推进器B1058.2成功着陆在JRTI上。[56] 成功
49 2020年8月7日 星链 L9 猎鹰9号第一级推进器B1051.5成功降落在OCISLY。这是第三枚达到重复飞行五次的猎鹰助推器。[57] 成功

参见

参考资料

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