SpaceX plans to launch two Falcon 9 rockets and test flights of StarCraft

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 SpaceX plans to launch two Falcon 9 rockets and test flights of StarCraft


The deltaiv heavy rocket of SpaceXs rival, United Launch Alliance (ULA), was scheduled to launch the mysterious National Reconnaissance Office 44 (nrol-44) spy satellite on Wednesday, after customers asked for a 24-hour delay. The rockets technical failure initially pushed the mission to August 27 and is now scheduled to launch on August 29. The delta IV rocket is launched once or twice a year at a slow pace, making it difficult to launch on time, and the company has few opportunities to solve complex system problems.

Since ulas nrol-44 launch is currently in priority among all launch missions, SpaceX has no choice but to continue to postpone its launch plan every time the ula mission fails. SpaceX is currently in line for two launches: the first is to launch the Argentine earth observation satellite saocom1b using its Falcon 9 satellite, which was originally scheduled to be launched on August 28, U.S. local time; the second is the launch of the 11th batch of SpaceX satellite chains, which is expected to take place in the morning of August 30 local time.

At the same time, SpaceX is preparing for its second short-range low altitude test flight of its starship prototype at some time between these orbital launches. However, the second delayed launch of ulanrol-44 has put SpaceXs two launch mission dates in suspense.

Figure 2: SpaceX encapsulated saocom1b in the payload fairing of Falcon 9 earlier this month

The recent delay in SpaceXs east coast launch has pushed the companys second full-scale starship flight test to the forefront of the team. The prototype of the starship, named SN6, is currently scheduled to try its first 150 meter altitude test flight as early as August 29, US local time. On August 4, the Starship SN5 became the first full-scale prototype to successfully launch (and land). In less than four weeks, the second successful test flight will represent an extraordinary feat, with two prototypes with totally different Raptor engines and hulls.

At the same time, SpaceX is also examining and refurbishing the prototype of the Starship SN5, which has been verified by low altitude flight tests, and may plan to fly again in the near future. According to chief executive Elon Musk, SpaceXs current goal is to conduct several fast-paced prototype test flights of starships to simplify the launch of the new rocket. The 150 meter high altitude test window of SN6 lasts from 8:00 a.m. to 8:00 p.m. on August 29, the rocket may try to lift off from 10:00 a.m. to noon at the earliest.

Figure 3: starship prototype SN6 completed antifreeze test and Raptor engine static ignition test on August 16 and August 23

SpaceX launched saocom1a from California in October 2018, and saocom1b is almost identical to it. However, it is worth noting that the satellite will be launched from Florida, the first polar launch planned on the east coast of the United States in half a century. This is mainly because SpaceXs Falcon 9 rocket will swerve in flight, changing its trajectory to avoid overflying densely populated areas.

The Argentinean satellite was originally planned to be launched as early as March 30, but its launch was delayed due to limitations related to the new coronal epidemic and technical delays. The booster of the Falcon 9 rocket, which launched saocom1b, was even replaced in delay, from b1051 to b1059, as SpaceX tried to fill the gaps in the list through internal star chain missions. Now, the delay in nrol-44s technical launch has pushed the Falcon 9 mission from August 27 to the night of August 30. Finally, before the launch of nrol-44 is delayed, the 11th SpaceX satellite launch mission is scheduled for August 30. The delay in the launch of ula increased considerable uncertainty, pushing the launch of the satellite chain satellite to September 1 at one time, and then the launch date was rescheduled to late August. Assuming SpaceX still needs to wait for the ula launch, the most likely choice is August 31, because if it is chosen on August 30, the company will need to launch twice in less than 10 hours. (small) source of this article: Ding Guangsheng, editor in charge of Netease science and Technology Report_ NT1941

The Argentinean satellite was originally planned to be launched as early as March 30, but its launch was delayed due to limitations related to the new coronal epidemic and technical delays. The booster of the Falcon 9 rocket, which launched saocom1b, was even replaced in delay, from b1051 to b1059, as SpaceX tried to fill the gaps in the list through internal star chain missions. Now, the delay in nrol-44s technical launch has pushed the Falcon 9 mission from August 27 to the night of August 30.

Finally, before the launch of nrol-44 is delayed, the 11th SpaceX satellite launch mission is scheduled for August 30. The delay in the launch of ula increased considerable uncertainty, pushing the launch of the satellite chain satellite to September 1 at one time, and then the launch date was rescheduled to late August. Assuming SpaceX still needs to wait for the ula launch, the most likely choice is August 31, because if it is chosen on August 30, the company will need to launch twice in less than 10 hours. (small)