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SpaceX aborts Starship launch after Raptors produce too much thrust

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6 years ago

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Update #3: SpaceX CEO Elon Musk says that Starship prototype SN10 automatically aborted a 2:15 pm CST (UTC-6) launch attempt after the rocket determined that its three Raptor engines were producing too much thrust.

Instead of scrubbing for the day, Musk says that SpaceX will instead increase the flight computer’s thrust limits and try again as early as 4:30 pm CST – still well before today’s window closes at 6:30 pm. SpaceX ended its webcast but will start a second webcast a few minutes prior to the next launch attempt.

https://www.youtube.com/watch?v=DDEgFsefrGw

Update #2: As of Wednesday morning, SpaceX has officially confirmed that Starship is on track for a third high-altitude launch and ‘bellyflop‘-style landing attempt sometime later today.

As of 11am CST (UTC-6), FAA approval is in hand, weather is encouraging, Starship prototype serial number 10’s (SN10) flaps have been unchained, and SpaceX has cleared the launch site – all signs that the rocket’s launch attempt is imminent. Much like SN8 and SN9 coverage, SpaceX says it will make a public livestream of SN10’s launch available to the public “a few minutes” before liftoff. Stay tuned and follow along with NASASpaceflight’s live coverage in the meantime.

Update: SpaceX has asked Boca Chica Village residents to prepare to evacuate the area as early as Wednesday morning for Starship’s third high-altitude launch and landing attempt.

The odds of things going so wrong that a Starship launch could actually end with a prototype impacting at or near the Village and the handful of non-employee holdouts still residing there are minuscule. However, FAA safety regulations and SpaceX’s contingent launch license mean that evacuations are now a routine part of Starship’s high-altitude flight tests since Starship SN8 took the first step beyond short hops. While undeniably inconvenient for the few remaining residents, today’s evacuation notice – short of an official SpaceX.com confirmation – does serve as the ultimate sign that Starship SN10’s first launch attempt is firmly scheduled on Wednesday, March 3rd.

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With FAA approval in hand, weather rapidly improving, and the latest rocket prototype seemingly raring to go, the stars are aligning for SpaceX’s third high-altitude Starship launch and first triple-engine landing attempt.

As of March 1st, publicly-available FAA “temporary flight restrictions” (TFRs) and weather forecasts both agree that SpaceX is currently preparing to launch Starship serial number 10 (SN10) as early as Wednesday afternoon CST (UTC-6), March 3rd. Barring surprises, that gives SpaceX a healthy three-day period to account for any potential technical or weather-related delays.

Originally scheduled as early as the last week of February, unspecified delays pushed Starship SN10’s launch debut schedule into March. In general, the vehicle’s path to flight has been much smoother than Starship SN8 and SN9, both of which ran into hardware bugs and opaque FAA licensing issues. With Starship SN10, the FAA approved SpaceX’s “modified” launch license well before the company was ready for flight – and even before the rocket had attempted its first static fire.

FAA clears SpaceX Starship prototype for third launch and landing attempt

Unlike Starships SN8 and SN9, both of which took anywhere from 6-10 weeks to go from rolling off the factory floor to preparing for their first launch attempts, SN10’s first launch attempt appears likely to occur less than five weeks after the rocket arrived at the launch site. The sequential improvements in efficiency and reliability between those three prototypes is a fundamental part (or goal, at least) of SpaceX’s iterative development process.

Still, Starship SN10’s preflight flow wasn’t completely free of drama and SpaceX ultimately put the rocket through a second triple-Raptor static fire after the first test revealed an issue with one of those engines. SpaceX swapped that faulty engine out in record time and fired up SN10 again less than 48 hours after test #1, seemingly producing more satisfactory results the second time around.

Unlike its predecessors, SN10 will also debut a new triple-engine approach to landing, aiming to increase redundancy and boost the odds of a successful touchdown even if one of the Starship’s three Raptors fail during a last-second flip maneuver. Building on the failures of SN8 and SN9, it’s safe to say that SN10 has the best shot yet at sticking the landing.

TFRs show that two earlier launch windows on Monday and Tuesday (March 1st and 2nd) were canceled, leaving only the Wednesday, March 3rd airspace closure request still open. Wednesday was then backed up with two alternate windows on Thursday and Friday not long after.

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Hardware-wise, Starship SN10’s cherry-on-top (an explosives-based flight termination system or FTS) was installed on February 28th. In the event that Starship loses control and strays past a certain point outside of its approved trajectory, that FTS would explode, breaching the rocket’s propellant tank, triggering vehicle breakup, and thus preventing it from harming the local populace. All told, SpaceX confirmation of a Wednesday launch attempt – and another official webcast – should be imminent. Stay tuned!

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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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5 hours 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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19 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

Published

20 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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