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SpaceX fires up Starship and Super Heavy booster hours apart

Two rockets; two static fires; three hours. (NASASpaceflight - bocachicagal)

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SpaceX appears to have successfully fired up a Starship and Super Heavy booster hours apart, testing a total of three new Raptor 2 engines on the two rockets.

SpaceX says it completed a two-engine static fire with Starship 24 less than three hours after the company successfully ignited a Raptor 2 engine installed on a rocket prototype for the first time. That earlier test, performed by Super Heavy Booster 7, was also the first time SpaceX used its new Starbase orbital launch site to support a static fire test and the second-ever static fire of a Starship booster prototype. Had the company called it quits after Booster 7 survived its first intentional trial by fire, it would have still been an exceptionally successful day.

But SpaceX wasn’t done.

Instead, after Booster 7’s seemingly flawless single-Raptor static fire at 5:25 pm CDT, SpaceX loaded Starship 24 with a small amount of liquid oxygen and methane propellant and ignited two of the ship’s six engines around 8:18 pm. It was not initially clear how many engines were involved but a tweet from SpaceX later confirmed it was two. More likely than not, one of those engines was a sea level-optimized Raptor with a smaller bell nozzle and the other was a vacuum-optimized Raptor with a much larger nozzle.

Almost ten months ago, Starship 20 – SpaceX’s first potentially orbital-class Starship prototype – began static fire testing in a somewhat similar way. Its first day of static fires began with a single Raptor Vacuum engine and ended with a simultaneous RVac and sea-level Raptor test in October 2021. In some ways, SpaceX has been a bit less cautious with Starship 24, which is the second potentially orbital-class prototype to begin proof testing. Ship 24 already has all six Raptors installed, whereas Ship 20 only had four of six engines installed during its first static fire tests. SpaceX also took about three weeks to progress from Ship 20’s first static fire test to its first static fire of all six engines, whereas it appears that Ship 24 could potentially attempt its first six-engine test just a few days to a week later.

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On the other hand, Ship 24’s path to its first static fire was substantially longer than Ship 20’s. Ship 20 completed its first static fire test(s) just 25 days after its first proof test, referring to the process of verifying that the prototype was in good working order before moving on to riskier testing with flammable propellant and intentional ignitions. Ship 20 also completed its first six-engine static fire 46 days after testing began. Ship 24, meanwhile, took 75 days to go from its first proof test to its first static fire – almost three times slower than Ship 20, a prototype that was essentially the first of its kind.

It’s possible that Ship 24’s upgraded Raptor 2 engines are partially or fully to blame. Instead of jumping straight into ‘hot’ Raptor testing like Ship 20, which began that particular campaign with a partial-ignition preburner test, SpaceX put Ship 24 through seven ‘spin-prime’ tests before its first static fire. For Raptor, spin-primes test the ignition step before preburner ignition, which is itself a step before main combustion chamber ignition (where the engine starts to produce meaningful thrust). Raptor startup procedures likely involve flowing high-pressure gaseous helium, nitrogen, or propellant (oxygen/methane) through the engine to spin up its turbopumps, ‘priming’ them for preburner and main combustion chamber ignition.

On Raptor 1, the preburners would ignite once a high enough flow rate was achieved, producing hot gas that the main combustion chamber would mix and ignite one last time to start the engine. In a recent interview with Tim Dodd (“The Everyday Astronaut”), CEO Elon Musk revealed that SpaceX was able to “remove torch igniters” from Raptor 2’s main combustion chamber (MCC). It’s unclear if that means that Raptor 2 now has zero MCC igniters, but a major change in the overall ignition process could explain why the start of Ship 24 and Booster 7 engine testing was so sluggish. So could the unintended explosion Booster 7 caused when SpaceX attempted to spin-prime all 33 of its Raptor 2 engines at once.

Regardless, SpaceX has finally crossed that particular Rubicon and, with any luck, Raptor 2 testing will begin to speed up on both Starship 24 and Super Heavy Booster 7. SpaceX has test windows scheduled on August 11th, 15th, and 16th. A warning distributed to Boca Chica, Texas residents on August 10th confirmed that the company intends to perform at least one more static fire test on the 11th.

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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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Elon Musk reiterates his most optimistic prediction yet with “UHI” forecast

Despite his polarizing nature, Elon Musk is, at his core, an optimist.

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Joel Kowsky, Public domain, via Wikimedia Commons

Despite his polarizing nature, Elon Musk is, at his core, an optimist. If he were not one, he would never have founded Tesla or SpaceX, or pursued projects such as Neuralink or xAI.

Musk’s optimism was on full display on social media platform X recently, when he shared what could very well be his most optimistic prediction yet.

Robots and humans

The Tesla CEO recently responded to a post from David Scott Patterson, who estimated that all jobs will be replaced by AI and robots easily by 2030. In his post, Patterson noted that if robots are sold at the same rate as vehicles, it could result in an output of 320 million robots per year. 

Musk responded that eventually, intelligent humanoid robots will far exceed the population of humans, and “there will be many robots in industry for every human to provide products & services.” 

Musk is already taking steps to achieve such a future. Tesla’s Optimus humanoid robot is expected to see its first “legion” produced this 2025. During an All-Hands meeting earlier this year, Musk also hinted to Tesla employees that the company will try to produce about 50,000 Optimus robots next year. 

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Universal High Income (UHI)

Musk has shared similar sentiments in the past, so it was no surprise that some X users asked the CEO how humans could sustain their lives when robots replace working individuals. To this, Musk responded that a Universal High Income (UHI) would be implemented, which should provide people with the best medical care, food, and transport available.

“There will be universal high income (not merely basic income). Everyone will have the best medical care, food, home, transport and everything else. Sustainable abundance,” Musk wrote in his post

Musk’s comment about sustainable abundance seems to be a prevalent theme in his recent optimistic comments. During Tesla’s second quarter earnings call, for example, Musk hinted that his Master Plan Part Four will describe a path towards sustainable abundance in a post-autonomy world.

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Tesla FSD upcoming Australia release seemingly teased bv media

The videos showed FSD navigating lane changes, slowing for traffic, and handling curves without driver input.

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Credit: Tesla AI/X

New videos from Australia have fueled speculations that Tesla’s Full Self-Driving (FSD) will be rolling out in the country soon. 

The videos, which were shared widely on social media, showed Teslas navigating lane changes, slowing for traffic, and handling curves without driver input, but still with active supervision.

New FSD footage

One video, posted by lifestyle outlet Man of Many and narrated by journalist Ben McKimm, highlighted how quickly the system responded to real-world conditions. McKimm seemed quite impressed with FSD’s performance, stating that the vehicle performs maneuvers much like a human driver. 

Another video, which featured reporter Danielle Collin, featured a Tesla operating on public roads using its FSD (Supervised) system. Similar to McKimm, Collin seemed very impressed with the capabilities of FSD, as the vehicle was reacting to things like stop signs on its own. 

No regulatory barriers

This isn’t the first time the software has been seen on Australian roads. Earlier this year, Tesla released a clip of a Model 3 driving through Melbourne’s central business district with no visible driver input. A second video later surfaced from Sydney, reinforcing expectations that Australia could be among the first right-hand-drive markets to receive access.

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According to Tesla’s Australian website, FSD (Supervised) uses 360-degree camera visibility to manage blind spots, execute lane changes, and maintain awareness of surrounding vehicles, cyclists, and motorcycles. While Tesla notes that constant human oversight is still required for now, FSD is designed to handle city intersections, multi-lane highways, and traffic signals.

In an earlier statement to news.com.au, Tesla country director Thom Drew previously confirmed there were “no blockers in Australia” for a supervised release of FSD, similar to North America. “It’s something our business is working on releasing,” Drew said, though he did not provide a timeline.

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Tesla Careers website is hinting at preparations for a monster Q3 and Q4

Tesla has gone live with several dozen openings for Delivery Vehicle Prep specialists on its Careers website.

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Credit: Tesla

Tesla seems to be preparing for a monster Q3 and Q4 2025. This was, at least, hinted at by some job openings that have been observed by industry watchers in Tesla’s Careers website.

Job listing trends

As observed by avid Tesla watchers on social media, the electric vehicle maker has gone live with several dozen openings for Delivery Vehicle Prep specialists on its Careers website. In North America alone, about 69 job openings for the position have been listed by the company. 

The role of a Delivery Vehicle Prep specialist is notable, as they help with vehicle preparation, vehicle inspections, effective lot management, and active collaboration with your team to enhance pre-delivery processes. Considering that the position ensures that cars are handed over to customers in the best way possible, it seems futile for Tesla to ramp up its hiring for the post if it is not expecting large volumes of deliveries in the coming months.

Increasing demand

Tesla’s vehicle sales in the first and second quarters of the year have been quite throttled due to a variety of factors, from the changeover to the Model Y in the Fremont Factory, Gigafactory Shanghai, Gigafactory Berlin, and Gigafactory Texas, to the rise of anti-Tesla sentiment due to CEO Elon Musk’s political activities earlier this year. These factors are no longer affecting Tesla this Q3, and the company tends to deliver a notable amount of its vehicles in the fourth quarter. 

With this in mind, it would appear that Tesla is indeed preparing for a massive uptick in its vehicle deliveries for the remaining months of the year. The company, after all, would likely be quite busy, especially with the upcoming introduction of the new Model 3 Performance and the rollout of Tesla China’s recently unveiled Model Y L. Expectations are also high that Tesla is preparing to roll out more affordable variants of its vehicles later this year.

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