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SpaceX’s Crew Dragon one step closer to human spaceflight after flawless launch

Falcon 9 B1051 lifts off on the launch debut of SpaceX's first Crew Dragon spacecraft, set to dock with the ISS on Sunday morning. (SpaceX)

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6 years ago

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SpaceX has completed the first half of its critical Crew Dragon test flight, launching the brand new spacecraft into low Earth orbit (LEO) on the back of one of its workhorse Falcon 9 rockets. The rocket performed nominally, successfully sending the human-rated vehicle on its way towards the International Space Station (ISS).

Scheduled to dock with the ISS as early as 6 am EST (13:00 UTC) March 3rd, Crew Dragon will now face the real challenge of this demonstration mission, successfully operating in orbit and autonomously docking with the ISS. Along the way, SpaceX will be flight-testing a number of technologies and systems new to the company, while also providing reams of data that will help both SpaceX and NASA determine whether Crew Dragon performed as intended and is truly ready to carry astronauts into orbit.

https://twitter.com/_TomCross_/status/1101764440800878593

While this successful launch is a critical milestone for DM-1, Crew Dragon, SpaceX, and NASA, it’s hard to say there is anything particularly shocking about its successful completion. Including this launch, SpaceX has now successfully launched Falcon 9 42 times in a row since January 2017, including seven orbital launches and ISS missions with Cargo Dragon, a heavily proven spacecraft with 16 successful missions since its 2012 debut. Put simply, SpaceX has an incredibly dense volume of experience successfully launching, landing, recovering, and refurbishing orbital-class rockets and spacecraft, as well as a proven track record of success and an ability to confront and move past challenging vehicle failures.

Crew Dragon’s successful launch is no less of a major achievement, even if it was about as much of a known quantity as any other Falcon 9 mission. The real challenge ahead of the spacecraft is successfully demonstrating the efficacy of its design and operations in space, particularly while interacting and docking with the ISS. Prior to tomorrow morning, all SpaceX Dragons have berthed with the ISS, meaning that they effectively come up from underneath the ISS (a lower orbit), stop a few meters away, and are ‘grappled’ by a large robotic arm (known as Canadarm2) that also attaches the spacecraft to a docking port. If – at any point during the pre-berthing approach – Cargo Dragon were to lose control, the spacecraft would essentially fall back down the gravitational hill it had just climbed, a built-in abort that would nominally prevent the spacecraft from impacting the Station in most failure scenarios.

Crew Dragon, on the other hand, has been designed to dock with the ISS. Generally speaking, this means that the spacecraft will approach the Station side-on, as if it were a car accelerating faster than another car in the same ‘lane’. While there are many built-in points during the docking approach where Crew Dragon will halt all forward movement, the differing docking approach means that any loss of control or contact while on a vector towards the ISS could mean that it is unable to abort, significantly increasing the likelihood of an impact event in worst-case scenarios. While Crew Dragon is designed with extreme redundancy and fault-tolerance in mind, the stakes are definitively higher compared to Cargo Dragon.

Conscious of this fact, the new spacecraft will be tasked with completing a significant number of on-orbit maneuvers to verify nominal performance before allowing the autonomous vehicle to attempt a docking with the ISS. While that docking attempt is scheduled to occur as early as 6 am EST (13:00 UTC), live coverage – hosted by both NASA and SpaceX – will begin around 3:30 am EST (10:30 UTC) on Sunday, March 3rd. While these on-orbit webcasts can admittedly be rather dry compared to the thrill of launch, it will arguably be the most significant and mission-critical portion of Crew Dragon’s launch debut, alongside the spacecraft’s safe reentry and Atlantic Ocean landing and recovery. Follow along live at spacex.com/webcast.

 

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Eric Ralph is Teslarati's senior spaceflight reporter and has been covering the industry in some capacity for almost half a decade, largely spurred in 2016 by a trip to Mexico to watch Elon Musk reveal SpaceX's plans for Mars in person. Aside from spreading interest and excitement about spaceflight far and wide, his primary goal is to cover humanity's ongoing efforts to expand beyond Earth to the Moon, Mars, and elsewhere.

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SpaceX and Elon Musk explain potential reasons for Starship loss

Published

2 months ago

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January 17, 2025

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Credit: SpaceX

SpaceX and its CEO Elon Musk are starting to shed some light on the potential reasoning for the loss of Starship yesterday, which was lost after a successful launch and catch of the lower-stage booster.

Starship was lost during its ascension, and debris rained down over the Caribbean less than an hour after SpaceX lost all communication with the spacecraft.

A few hours after the launch was over, SpaceX started to shed some light after looking at preliminary data that the rocket left behind.

The company said that a fire developed in the aft section of Starship:

“Following stage separation, the Starship upper stage successfully lit all six Raptor engines and performed its ascent burn to space. Prior to the burn’s completion, telemetry was lost with the vehicle after approximately eight and a half minutes of flight. Initial data indicates a fire developed in the aft section of the ship, leading to a rapid unscheduled disassembly with debris falling into the Atlantic Ocean within the predefined hazard areas.”

Additionally, Musk said that there was some sort of oxygen or fuel leak in the cavity above the ship engine firewall.

The leak was evidently large enough to build more pressure than the vent was able to handle:

Some also seemed to recognize evidence of fires throughout the flight of Starship, which is obviously an anomaly:

There will be more information regarding the loss of Starship in the coming days and weeks, but Musk already believes that a bit of fire suppression and more volume in the cavity above the ship engine firewall could fix the issue.

“Nothing so far suggests pushing next launch past next month,” he said, so Flight 8 could happen sometime in February.

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SpaceX completes second catch of lower stage, but loses Starship

Published

2 months ago

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January 16, 2025

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Credit: SpaceX

SpaceX completed its seventh launch of Starship on Thursday, accomplishing a clean liftoff and catch of the first-stage booster. However, the upper stage was lost after its ascent.

The launch took place just a few minutes after 5 p.m. on the East Coast, as the first attempts at getting Starship in the air for the seventh time were delayed by weather both last week and this week.

Conditions were favorable on Thursday as SpaceX looked to follow up a successful campaign by Blue Origin, Jeff Bezos’s company, earlier today.

SpaceX went into the seventh Starship launch with plans for a catch attempt of the first-stage booster, something it attempted and completed during the fifth test launch last year. It decided to skip a catch attempt with the sixth test flight as conditions were not aligned.

For now, SpaceX is extremely selective as to when it attempts catches.

However, it was successful during this attempt, its second completed catch:

This flight differed from previous launches as SpaceX rolled out several improvements to the rocket and the processes as it featured plans to do a Starlink deployment simulation and had various adjustments to flap placement and avionics.

These plans were disrupted by the fact that SpaceX lost all communications with Starship about ten minutes into the flight, which the aerospace company confirmed was a result of losing the spacecraft sometime during its ascent.

Although the catch was successful, the loss of the actual rocket seemed to be a huge damper on the entire event. SpaceX confirmed several minutes after the loss of communications that the rocket was destroyed and was lost.

It was its first failure since the second Starship launch in November 2023. SpaceX had no answers for why the rocket was destroyed and lost.

We will keep you updated in the coming days.

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SpaceX confirms next Starship launch target – Here’s when it will take off

Published

2 months ago

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January 9, 2025

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spacex starship upper stage catch
Credit: Elon Musk | X

SpaceX has confirmed a new target date for the seventh Starship test launch after weather in Texas delayed the first scheduled date for “three or four days.”

The company is now targeting the launch for Monday, January 13, at 4 p.m. CST or 5 p.m. EST. The launch date is not set in stone as any variety of delays could impact this, but SpaceX hopes to finally take off after a delay that pushed it back from January 10.

What’s new with this Starship launch

With this being the seventh test launch of Starship, there are several things that the company will change and hope to accomplish. All of these launches are done in preparation for eventually taking flight to Mars, something that will happen next year, according to CEO Elon Musk.

First, SpaceX is rolling out a next-generation ship with “significant upgrades.” Forward flaps have been made smaller and are repositioned away from the heat shield, which will “reduce their exposure to reentry heating.”

SpaceX eyes 25 annual Starship launches starting next year

There is also a 25 percent increase in propellant volume, a new fuel feedline system for the Raptor vacuum engines, and a better-than-ever propulsion avionics module that will control the valves and reading sensors.

Avionics, as a whole, underwent a redesign and now have more capability and redundancy for missions as they become more complex.

Starlink test

SpaceX is also planning to deploy 10 Starlink simulators that are similar in size and weight to the next-generation Starlink satellites:

“While in space, Starship will deploy 10 Starlink simulators, similar in size and weight to next-generation Starlink satellites as the first exercise of a satellite deploy mission. The Starlink simulators will be on the same suborbital trajectory as Starship, with splashdown targeted in the Indian Ocean. A relight of a single Raptor engine while in space is also planned.”

Ship return and catch

There will be several experiments that have to do with returning Starship and various catch scenarios and sequences. One of which will see “a significant number of tiles be removed to stress-test vulnerable areas across the vehicle.”

The ship’s reentry profile was also intentionally designed to test the structural limits of the flaps while at the point of maximum dynamic pressure during reentry.

Currently, SpaceX did not detail whether it would attempt another catch during this test launch. These are usually game-time decisions.

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Please email me with questions and comments at joey@teslarati.com. I’d love to chat! You can also reach me on Twitter @KlenderJoey, or if you have news tips, you can email us at tips@teslarati.com.

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