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SpaceX Starship saved by ‘burst disk’ after Raptor static fire ends badly

For the second time, a Starship Raptor engine test has caused a secondary fire that severed some of SpaceX's control over the rocket. (NASASpaceflight - bocachicalgal)

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Around 7:15 pm local time, SpaceX Starship prototype SN8 fired up one or several Raptor engines for the third time ever, catching onlookers – only expected a dress rehearsal – by surprise. An hour later, CEO Elon Musk revealed that SpaceX had effectively lost control of the rocket.

Unfortunately for SpaceX, this is not the first incident in which a fire led to a loss of Starship control. Back in May 2020, Starship serial number 4 (SN4) – the first full-scale prototype to have a Raptor installed – completed its third successful static fire test. Moments later, a vent line adjacent to the engine section caught fire, burning for a minute or two. Ultimately, likely due to destroyed wiring or plumbing, SpaceX seemingly lost control of SN4 and had to wait a full two days for cryogenic propellant to boil off and evaporate before teams could approach the rocket to inspect, repair, and regain control.

Now, more likely than not, Starship SN8 has suffered a similar – but not identical – failure, cutting some level of control. Elon Musk took to Twitter about an hour after the rocket’s third Raptor static fire, revealing that SpaceX had lose control of Starship’s pneumatics, referring to hydraulic systems needed to operate most of the rocket’s valves. For SN8, that meant nothing but bad news.

As cryogenic liquids (and all things in general) warm up, they expand, taking up more volume. To counteract that never-ending process of cryogenic propellant warming up, boiling, and turning to gas, fresh propellant is almost continually loaded while warmer gas is vented, thus maintaining safe tank pressures. If the ability to vent those gases is lost, the ability to maintain safe pressures goes with it.

As Musk noted above, Starship SN8 thankfully – and unexpectedly – had one or several burst disks installed, referring to single-use mechanical valves designed to open (i.e. burst) above a specific pressure. SN8’s nosecone burst disk did just that, bursting to create an outlet for the pressure building inside the rocket and thus preventing the small nose-based liquid oxygen (LOx) tank from exploding.

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A torrent of molten metal pours from Starship SN8’s engine section after a seemingly successful static fire. (NASASpaceflight – bocachicagal)

Unfortunately, the precursor to Starship losing control is a much less positive story. According to Musk, one of the Raptor engines SN8 ignited may have suffered a significant failure, melting one or more critical engine components. It’s unclear how exactly a seemingly contained engine failure evolved into a total loss of Starship hydraulics but it’s safe to say that redundancy will be added and updated designs will be implemented to ensure that a similar failure doesn’t reoccur.

Notably, both unofficial LabPadre and NASASpaceflight.com livestreams clearly showed Starship quite literally dripping molten metal for more than two minutes after the static fire. Whatever the cause of that extremely hot fire, anything that can continuously melt metal for minutes will have almost assuredly ravaged Starship SN8’s aft and the Raptor engines installed therein. It’s nothing short of miraculous that SN8’s main LOx tank wasn’t breached, as well.

Some 80 minutes after ignition and the resultant Raptor fire, Starship SN8’s nosecone ‘burst disk’ thankfully worked as designed, relieving building pressure and avoiding a far more destructive failure. (NASASpaceflight – bocachicagal)

Ultimately, SN8 will likely need extensive repairs – and one, two, or even three replacement engines – before it can safely restart testing and proceed towards its 15 km (~9.5 mi) launch debut. Additionally, SpaceX’s lack of valve control likely means that the company will have to wait at least 24+ hours before workers can safely return to the launch pad and begin those inspections and repairs.

Update: The roadblock was removed around 11pm local time and SpaceX workers appear to have already returned to the pad, signifying that Starship SN8 has been fully detanked and is safe to approach. Inspections and repairs will likely begin as soon as possible.

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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Tesla is missing one type of vehicle in its lineup and fans want it fast

Tesla is missing one vehicle from its lineup and its fans and owners are hoping the company builds it.

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Tesla’s lineup of vehicles has expanded considerably over the last few years. At first, the company offered the Model S luxury sedan, then the Model X luxury SUV, which has the seats but not the space or the affordability that everyone is looking for.

The Model 3 and Model Y are sedan and crossover vehicles that have launched the company into the mass-market category. The Cybertruck brought out the company’s first-ever pickup design, and while it is unorthodox, it is certainly functional.

Tesla Cybertrucks join Jalisco’s police fleet ahead of FIFA World Cup

But there is one thing Tesla is missing in its lineup, and it is a vehicle type that many have waited for and want. The company currently has not announced any plans to produce it, but its fans are loud and persistent, and we’ve even nudged Tesla to consider making it.

It’s a full-size SUV.

This particular segment is dominated by combustion engines currently: Chevrolet Tahoe and GMC Yukon topped sales with 105,756 and 82,304 units sold, respectively. The Ford Expedition is just behind with 62,007 units sold last year. There are a few formidable competitors on the EV side of things, with the Rivian R1S, the GMC Hummer SUV EV, and even the Kia EV9.

However, Tesla has yet to dip its toe into this market, and it seems many of its fans are willing to admit that the company is missing a true “people mover” with enough space to handle a cross-country road trip with a handful of kids.

Why Not the Model X?

The Model X is likely Tesla’s lowest-selling vehicle. It contributes very little to the overall mission of the company, and even CEO Elon Musk once said that it, along with the Model S, is only produced due to “sentimental reasons.”

When it comes to the X, it’s simply not quite what people are looking for in terms of a “full-size SUV.” Instead, it is more of a van/crossover SUV hybrid. It does not have tons of cargo and interior space.

It does have a lot of great tech, a flashy look, and adequate range for that trip with the kids. It’s a great car, and one that Tesla is planning to refine with an upcoming refresh, its second this decade.

However, it falls short of what would qualify as a full-size SUV, especially considering its third row is a little tight, even for younger children.

But it’s not quite what many would consider as what Tesla needs to fill this void in its lineup.

What Could Be Coming?

Many fans say they would like to see a CyberSUV — something built on the Cybertruck platform but in the form of a full-size SUV. This is not totally out of the question, especially considering Tesla has already made it clear the Cybercab would adopt the same sort of aesthetic as the Cybertruck.

However, we can all agree it’s a far cry from what the Cybertruck truly is, and Tesla likely will not build something that’s even close to the pickup. It already admitted it would not adopt the stainless steel exoskeleton for future vehicles in the Q4 2024 Shareholder Deck.

So, if Tesla were to decide to build something that would be in the full-size SUV segment, it wouldn’t look like the Cybertruck.

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Tesla customers are still being targeted by automaker with Musk rivalry

Lucid is still targeting Tesla owners with offers on trade-in allowance.

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lucid air dream edition interior
Credit: Teslarati

Tesla customers are still being targeted by other car companies, who are offering big incentives to trade in their current EVs for a new one.

One company that has not backed off from its trade-in promotion is one with a long-standing rivalry with Elon Musk, because its former CEO-turned-boardmember has a bitter relationship with the frontman.

Lucid is continuing to offer a $4,000 trade-in allowance on Tesla vehicles specifically, an effort that many companies have offered to owners of Musk’s EV brand in an effort to snag away some of those who might be on the fence about switching.

Many companies have offered these types of promotions before, but Lucid’s seems to be an extended one — almost an open invitation. It could have something to do with the rivalry Musk has had with former CEO Peter Rawlinson, who stepped down from his post as the company’s head executive three months ago.

Musk and Rawlinson were at one time co-workers. At Tesla, the two worked on the Model S together. That is, until Rawlinson abruptly left. There are still questions about what his exact job title was there, but Musk refuses to agree with Rawlinson’s claimed title of Chief Engineer of the project, which launched Tesla from niche to more mainstream.

Polestar has been trying to poach Tesla owners for months as well, and it’s no secret why. Musk’s political involvement and his work with DOGE certainly put some Tesla drivers in a tough spot, and some could be willing to give up their cars.

However, the success rates of these promos are unknown.

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Tesla Model Y charges to bring strongest month in Australia in 2025

Tesla saw a strong month of sales in Australia, led by the dominating performance of the Model Y.

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Credit: Tesla China

Tesla can thank the Model Y for bringing the company to its strongest monthly performance of the year in Australia.

In May, the Model Y accounted for 3,580 of the 3,897 total sales Tesla reported for the month in Australia. That’s a 9.3 percent increase from May 2024, while the Model Y had its best month since June 2024 with a 122.5 percent increase from the same month a year prior.

Additionally, it was the company’s best May in two years, when it sold 4,476 cars in May 2023.

It is a strong point in what has been a tough year for Tesla, but the difficulty can mostly be attributed to the switchover of production lines the company performed at each of its global production facilities.

It updated the Model Y earlier this year with a brand new front and rear fascia, as well as suspension improvements, and cabin modifications to provide a more comfortable ride.

Tesla’s Country Manager for Australia, Thom Drew, spoke to Drive in April about the Model Y and its influence on the company’s performance in Australia.

Tesla Cybertruck needs changes before Australia entry, but no guarantees it will arrive

He said the company saw tremendous interest in the Launch Edition of the new Model Y, which featured premium badging and some other novelty improvements compared to the Long Range All-Wheel-Drive that is available already.

Drew said:

“When we launched orders back in January, we had an enormous response to the launch edition. We’ve only just started test drives in the last couple of weeks. The boat’s been slowly making its way around the country. And now we’re seeing that kind of second wave come through, and seeing a lot of interest. I think we had a record test drive week, last week, in our entire history. So yeah, [we’re] seeing some really strong interest.”

Tesla is hoping to see improvements in sales performance across the globe, but it is primarily focused on the rollout of the Robotaxi platform, which is set for release on June 12.

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