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SpaceX Starship prototype days away from first Raptor static fire test

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SpaceX’s latest Starship appears to be just a few days away from becoming the first full-scale prototype to attempt a static fire test with a functional Raptor engine, potentially setting the rocket up for a hop test in the near future.

On April 26th, SpaceX teams successfully filled the fourth full-scale Starship prototype with ~1000 metric tons (~2.2 million lb) of liquid nitrogen, pressurized it to roughly 5 bar (70 psi), and exerted hundreds of tons of force on its “thrust puck” engine section with hydraulic rams. Every part of the test appears to have been completed without issue, making Starship SN4 the first to pass cryogenic proof testing and graduate to riskier tests.

Since then, SpaceX technicians and engineers have been carefully inspecting Starship and likely cleaning its cavernous propellant tanks, while also preparing a lone Raptor engine for installation. By all appearances, that engine installation milestone could occur anytime within the next 24 hours and based on public road closure schedules, the first static fire attempt could occur just a day (or less) later.

SpaceX’s latest Starship prototype could be just a few days away from its first Raptor static fire test. (LabPadre)

Capable of producing at least 200 metric tons (~450,000 lbf) of thrust, SpaceX CEO Elon Musk recently revealed that Starship SN4 will only have one Raptor engine installed. Instead, the first multi-engine static fire and flight tests are planned for its successor, Starship SN5, with SN4 apparently set to feature an asymmetric engine layout.

Starship SN4’s thrust structure and engine section are pictured here on April 12th, confirming that it’s nominally designed to host three engines. (NASASpaceflight – bocachicagal)

Designed for three engines in a triangle formation, Starship’s existing engine section and thrust structure (thrust puck) would need an inefficient one-off redesign or heavy modifications to allow a single Raptor engine to be installed directly in the center of the rocket. Unsurprisingly, SpaceX chose not to waste resources on a one-off addition to a serial prototype. Instead, if Starship survives static fire testing and the asymmetric stress that will create, the rocket may apparently attempt to launch and land with the same setup.

This would very likely result in Starship SN4 both lifting off and landing at an angle, effectively drifting its way off the launch mount and onto an adjacent landing pad.

Raptor performs a static fire test in McGregor, Texas. (SpaceX)
Starship SN4 could soon attempt to replicate Starhopper’s spectacular 150m hop. (SpaceX)

Before that potentially bizarre flight test and the static fire that must precede it, however, SN4 must also complete the first full-scale Starship wet dress rehearsal (WDR), referring to the process of fully fueling a rocket and performing a launch countdown without actually launching. It’s likely that SpaceX plans to roll Starship SN4’s WDR directly into a static fire test, meaning that the massive rocket could ignite a Raptor engine as early as Friday, May 1st.

Stay tuned for visual confirmation of Raptor engine installation on Starship SN4!

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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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Tesla hired over 1,000 factory workers for its Semi program in NV: report

The update was initially reported by Insider, which cited three people reportedly familiar with the matter.

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Credit: Tesla Semi/X

Tesla seems to be putting a lot of effort into growing its Semi team. As per recent reports, the company has hired over 1,000 factory workers in Nevada for its Semi program.

The update was initially reported by Insider, which cited three people reportedly familiar with the matter. 

Bigger Semi Team

As per the publication’s sources, Tesla has reportedly hired over a thousand new factory workers for the Semi program in Nevada. The hiring ramp is reportedly part of the company’s efforts to fulfill the orders for the Semi, which have been accumulating for years.

To help the new members of the Semi team, Tesla has reportedly brought in the new workers to Giga Nevada for training and tours over the past months. These efforts are quite a notable update for the Semi program, the publication’s sources claimed, since less than 100 factory workers were reportedly assigned to the Class 8 all-electric truck until recently.

Tesla has not issued a comment about the matter as of writing.

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Tesla Semi Jobs and Updates

Insider’s report came amidst a hiring ramp in Tesla’s Careers website. As per previous reports, Tesla’s Careers website has uploaded over 80 positions related to the Semi program. The positions are varied, with listings being posted for engineering-related roles in Palo Alto, California, to manufacturing-related roles in Sparks, Nevada, and vehicle service-related roles in Sacramento, California. 

Tesla also shared a recent video of the ongoing progress of the Semi factory’s construction near Giga Nevada. As per Tesla Semi program lead Dan Priestley, the company has spent the last few months building the facility’s shell, so efforts are now underway to equip the factory with production equipment. The Tesla executive also reiterated the company’s target of producing 50,000 units of the Semi annually from its Nevada factory.

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Elon Musk jokes he will join Mr Beast’s “100 Men vs 1 Gorilla” challenge

It’s a good sign, if any, that the overworked Musk is becoming a bit more lighthearted again.

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Credit: Elon Musk/X

Following the first quarter Tesla earnings call, CEO Elon Musk seems to have become a bit more relaxed—relaxed enough to joke about fighting a gorilla with 99 other people, at least.

It’s a good sign, if any, that the overworked Musk is becoming a bit more lighthearted again and not too busy picking fights with politicians on social media.

The Viral 100 Men vs 1 Gorilla Challenge

Over the weekend, a post on social media platform X went viral. The post itself was quite simple, with user @DreamChasnMike stating that he thinks 100 men could beat one gorilla. “Everybody just gotta be dedicated to the sh*t,” the X user joked. The post exploded on the platform, garnering 284 million impressions as of writing.

The silly question also triggered a massive debate about whether 100 men would really stand a chance against a literal gorilla. Some users even lamented that the premise was a sign of male hubris. Nevertheless, the question proved to be a fun topic on X, with some more dedicated users even posting simulated videos of what the “100 Men vs 1 Gorilla Challenge” could look like. 

Mr. Beast and Elon Musk Join In

The premise is quite similar to other viral videos from noted YouTube creator Mr. Beast, so it was no surprise that edited images of Mr. Beast YouTube thumbnails with “100 Men vs a Gorilla” also started spreading on the social media platform. Mr. Beast, who tends to be game to such silly ideas, actually reposted the edited image, joking “Need 100 men to test this, any volunteers?”

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In true Elon Musk fashion, the Tesla and SpaceX CEO noted that he would join the challenge. “Sure, what’s the worst that could happen” Musk wrote in his post on X. Musk’s reply triggered quite a few laughs on X, with some stating that the world probably still needs the CEO.

While silly, Musk’s comment and his recent, more frequent posts about his companies’ products like Starlink and Grok have been received well by his supporters. Over the past months, after all, Musk has been very political and quite confrontational on social media. With Musk soon taking a step back from the Department of Government Efficiency’s (DOGE) daily operations, however, it seems like X will soon get a more tempered and lighthearted Elon Musk once more.

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Big Tesla win? Sec Lutnick says cars with 85% domestic content will face zero tariffs

That’s a big competitive advantage for Tesla’s best-selling vehicle.

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Credit: Tesla Europe & Middle East/X

It appears that Tesla may see itself with a notable advantage in the United States.

This is, at least, as per recent comments from United States Commerce Secretary Howard Lutnick.

Lutnick’s Comments

In recent comments to reporters, Lutnick stated that vehicles finished in the United States with 85% domestic content will have no tariff applied, as noted in a report from The Guardian. Automakers that meet this threshold stand to gain an advantage in the U.S. auto sector, especially considering the Trump administration’s aggressive tariffs.

As per Lutnick, the administration’s auto tariffs will apply to foreign carmakers that are building their vehicles in the United States. “This is ‘finish your cars in America and you win’,” Lutnick stated.

Big Tesla Advantage

Lutnick’s comments were received positively by Tesla watchers on social media, many of whom noted that the threshold would probably be met only by the electric vehicle maker’s cars. Teslas that are sold in the United States are built in the United States, and they have consistently ranked among the most American cars in the country for several years running.

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Back in December, for example, American University’s Kogod School of Business released its Made in America Auto Index, which explores the total domestic content of vehicles that are available for purchase today. In its rankings, only three vehicles received a total domestic content score of 85% or higher—the Tesla Model Y, Model Y Long Range, and the Model 3 Performance.

The two Model Y variants received a total domestic content score of 85%, while the Model 3 Performance had a total domestic content of 87.5%. If Secretary Lutnick’s comments are any indication, these three vehicles would be subjected to zero tariffs. This bodes well for Tesla, as the Model Y is the company’s best-selling vehicle by a notable margin.

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