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SpaceX rolls next Starship to the launch pad nine days after midair explosion

Starship SN15 is headed to the launch pad nine days after SN11's midair explosion. (NASASpaceflight - bocachicagal)

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5 years ago

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Update: Right on schedule, SpaceX has transported Starship serial number 15 (SN15) from its Boca Chica rocket factory to a launch and test site just down the road.

SN15’s pad arrival comes just nine days after Starship SN11 – the last in a batch of four first-generation prototypes – exploded in midair some 30 seconds before a planned landing. While minor, SN11’s midair failure was undoubtedly a step backward relative to Starship SN10, which (briefly) became the first full-size prototype to land in one piece less than a month prior. Both SN8, SN9, and SN10 made it further into their identical flight tests, leaving SN11 somewhat high and dry and putting extra pressure on Starship SN15.

After Starship SN8’s unexpectedly successful December 2020 test flight, in which the rocket made it just a dozen or so seconds away from soft landing after more than six minutes in flight, SpaceX made the decision to scrap Starship SN12 and kill SN13 and SN14 before assembly could begin. Effectively a gamble that SN8-SN11 would produce enough of a foundation for future testing to start off on, it’s hard to say if that gamble paid off.

All four Starship flights managed the extraordinary feat of more than four minutes of powered flight and spent two minutes free-falling like no rocket ever before them, but they also made it clear that both Raptor and autogenous pressurization (using gasified propellant to pressurize Starship’s tanks) are not quite mature enough for reliable launches and landings. Featuring “hundreds of improvements,” many of which were hopefully designed to tackle some of those shortcomings, it’ll be up to Starship SN15 to attempt to carry that torch forward – and, with any luck, further than any prototype before it.

After SpaceX unexpectedly used a Monday road closure to deliver its first custom-built rocket fuel tank, plans for the next Starship test campaign and launch have begun to solidify.

Most importantly, the initial schedule for Starship serial number 15’s (SN15) test campaign appears to be clear. As of Wednesday, April 7th, road closures filed by SpaceX suggest that the first of a new group of upgraded Starships will be transported from build site to launch pad as early as 11am-1:30pm CDT (UTC-5) on Thursday, April 8th. Once SN15 is installed on ‘Suborbital Pad A,’ SpaceX means to waste no time and has scheduled a 7am-12pm road closure on Friday.

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As usual, the weekend will once again be free of any testing or activity requiring road closures, but SpaceX has already cordoned off noon to 8pm on Monday and Tuesday (April 12/13) to continue putting its newest Starship prototype to the test.

SpaceX technicians and engineers work to put the finishing touches on the weld joining Starship SN15’s two halves and remove scaffolding ahead of the rocket’s trip to the launch pad. (NASASpaceflight – bocachicagal)

While road closure notices no longer offer any real detail, a few basic details can still be inferred. The April 7th closure, for example, warns that SpaceX only plans to intermittently close the highway but not Boca Chica Beach – implying that the window poses no threat to residents or beachgoers. Historically, that means that something will be transported – likely Starship SN15, in this case.

On Friday, SpaceX has scheduled a full five-hour closure of both the highway and beach, implying that some kind of testing is likely on the books. The same goes for Monday and Tuesday, but with longer eight-hour closures.

More likely than not, assuming Starship SN15’s pad transport and launch mount installation goes smoothly, SpaceX will use the shorter Friday window to complete a basic ambient pressure test – filling the rocket with ambient-temperature nitrogen gas to test its complex plumbing and propellant tanks for leaks. Continuing the IFF (if and only if) string, SpaceX will then spend the weekend preparing Starship SN15 for a cryogenic proof test and thrust structure stress test – simulating the thrust of three Raptors after loading the rocket with extremely cold liquid nitrogen (LN2).

SpaceX will then most likely spend another one or two days inspecting Starship SN15 and removing the hydraulic ram used to simulated thrust from the launch mount the ship is installed on. Once SN15 and its mount are cleared, SpaceX can move into static fire testing. Given that – according to CEO Elon Musk – SN15 will debut Raptor engines with an unknown degree of upgrades, it’s reasonable to assume that SpaceX will take things relatively slowly and possibly perform more than one static fire test even if the first attempt is a total success.

Musk blames SpaceX’s latest Starship explosion on Raptor engine leak

If not and SpaceX continues to push hard like it did with SN10 and SN11, it’s not out of the question that Starship SN15 will be ready for its first launch attempt around Friday, April 16th or Monday, April 19th. Stay tuned for updates as SpaceX hopefully rolls the rocket to its Boca Chica, Texas launch site later today.

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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

Elon Musk and Trump are closer than ever, and Tesla could be the big winner

Elon Musk sat beside Trump as AI leaders signed a voluntary White House safety accord.

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27 minutes ago

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September 29, 2026

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Elon Musk had the seat right next to President Donald Trump on Tuesday as the White House hosted the leaders of America’s biggest artificial intelligence companies for a lunch that ended with a voluntary industry accord on AI safety.

A seating chart Trump posted on Truth Social placed Musk at the president’s left in the East Room, with Nvidia CEO Jensen Huang on his right, according to an Associated Press reporter. Anthropic CEO Dario Amodei, OpenAI President Greg Brockman, Meta’s Mark Zuckerberg, Google’s Sundar Pichai, Microsoft’s Satya Nadella and Amazon founder Jeff Bezos also attended, along with Vice President JD Vance and House Speaker Mike Johnson.

After the lunch, Trump told reporters outside the West Wing that the executives had signed “The White House Accord on Superintelligence: A Joint Commitment on Frontier SI Responsibilities.” Johnson described it as a voluntary statement of principles built on “robust internal controls and layers of internal and external review,” while Zuckerberg said company boards would independently review reports from outside auditors. Trump called the document “morally binding,” said he would name a new AI czar within days, and signed an executive order formally renaming artificial intelligence “super intelligence,” CNBC reported.

Musk was not in the room for Tesla alone. Since SpaceX absorbed xAI, he runs the company behind Grok and one of the largest AI training operations anywhere. On September 25, he said another 220,000 Nvidia GB300 chips would come online at Colossus 2 within a week, with more expected in November and December.

SpaceX confirms third massive compute deal at Colossus data center

 

Musk also used the trip to restate his energy ambitions. “SpaceX is aiming together with Tesla to do 200 gigawatts of solar production per year,” he said at an event in Washington. It is the same combined target he laid out that feeds directly into Terafab, the Tesla and SpaceX chip venture that will need enormous amounts of power.

The showing between Musk and Trump has come a long way, since the two had the very public split in mid 2025 after Musk opposed the “Big Beautiful Bill” and left DOGE. They reconciled at Charlie Kirk’s memorial that September, and Trump later called their relationship “good”. Since then, Musk has joined Trump’s China delegation in May and attended last week’s White House state dinner for Chinese President Xi Jinping.

For Tesla, that access to government official could pay dividends. As Teslarati noted in January, federal autonomy rules, NHTSA oversight and a single national standard for driverless vehicles all run through an administration Musk can more easily reach directly as Tesla works to scale Robotaxi and Cybercab beyond Texas.

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Elon Musk

Tesla Roadster’s new patent preps white-knuckle speeds, keeping it grounded

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14 hours ago

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September 29, 2026

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Credit: @BLKMDL3/Twitter

Ahead of its highly anticipated unveiling, Tesla’s upcoming Roadster received a new patent that aims to keep it grounded while enabling white-knuckle speeds.

The patent, which was granted on September 29, is titled “Electric Car Fan,” bluntly stating its design but not its purpose, which is further detailed in the text of the application. Interestingly, it comes two weeks before the Roadster event, which was delayed due to unfavorable weather on Thursday, which could cause issues, as Tesla revealed the event must be held outdoors.

The purpose is to solve a problem that is relatively unique to high-performance electric cars. Instant motor torque is useless if the tires cannot plant that force, and conventional wings and underbody tunnels generate downforce only when air is already rushing past the car. At launch, in slow corners, and under hard braking from modest speed, passive aerodynamic additions contribute essentially very little to downforce.

Tesla’s filing says that its fans can produce the downforce needed, independent of vehicle velocity, then ease off so the same hardware does not pile on drag at highway speeds, an issue that can come from excessive body modifications.

The hardware outlined in the patent is a ducted-fan package that is placed into the rear of the vehicle. An underbody inlet between the rear wheels feeds a duct that rises to a wide outlet in the diffuser. In that outlet are four axial fans, which are divided by vertical strakes. They will pull air from under the floor and press the chassis onto the pavement.

The language in the patent claims it can cut drag rather than add to it while simultaneously increasing downforce.

Tesla Roadster event requires restricted airspace, and the FAA obliges

The fans run from the high-voltage battery and a vehicle control system, so output can be modulated rather than left on as a fixed penalty.

There are additional strengths that can come from this design, like extra tire load at low speed, which can contribute to even more face-melting acceleration rates, decrease stopping distance, and sharper turn-in before a wing has air to work with. Adjustable fan speed lets the car add grip only when needed, so it can be catered to the force of a turn or acceleration.

These designs were previously used, and banned, in some competitive settings. The Brabham BT46B was banned in F1 competition for using a similar fan design and being labeled as too effective.

Tesla still lists the Roadster as having a sub-two-second 0-60 MPH time and a 250-plus-MPH top speed, and there are expectations for a SpaceX cold-gas thruster package that could not only increase acceleration but potentially cause the vehicle to hover.

It is important to note that a patent is not a production part, and packaging four fans in a rear diffuser, managing noise, and potential debris are all things Tesla must consider. With that being said, the patent being granted shows Tesla is designing the Roadster to go fast, but it is also attempting to use unique strategies to combat any issues it might have at those speeds.

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Investor's Corner

Tesla showrooms picked clean ahead of Q3 end as demand looks strong

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15 hours ago

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September 29, 2026

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Credit: @thaichiminh1907/X

Tesla (NASDAQ: TSLA) showrooms have been picked clean ahead of the end of the third quarter of the year, as demand looks to be strong and delivery estimates for new vehicles are pushed into late 2026 and early 2027.

Tesla appears to have sold out of many of its Model 3 and Model Y trim levels in the United States, as only the Model Y RWD and Model Y All-Wheel-Drive are available for delivery before the end of the year.

Additionally, many showrooms are either completely empty or void of all but just one demo unit within the buildings themselves in an effort to bolster what could be one of Tesla’s best quarters in vehicle deliveries in recent memory.

Additionally, when I spoke to the guys at Tesla Mechanicsburg two weeks ago, when I returned the Model Y L, their third hauler of the week had just arrived, and every vehicle on it, along with every vehicle in their delivery lot, was accounted for and had a name attached to it for delivery.

Tesla saw a 25 percent increase in deliveries in Q2 compared to the same quarter the year before. The vast majority of the 480,126 units it delivered, 467,762 vehicles to be exact, were the Model 3 and Model Y.

In Q3 2025, Tesla delivered 497,099 vehicles, once again a figure that was dominated by the company’s two mass-market vehicles. Analysts have unusually wide predictions for this quarter, likely because so many firms missed the Q2 delivery figure by such a substantial margin; Wall Street predicted 408,000 cars, while Tesla delivered 480,000.

Goldman Sachs has Tesla slotted for 435,000 deliveries in Q3, while JPMorgan said it anticipates 482,000. The median guess is about 449,000 deliveries for Q3.

Interested in ordering a Tesla? Use my referral code for three free months of Full Self-Driving (Supervised) here.

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