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SpaceX prepares Falcon 9 booster for eleventh launch and landing [webcast]

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5 years ago

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SpaceX has confirmed that Falcon 9 is on track to launch another batch of Starlink satellites less than 48 hours after a successful United Launch Alliance Atlas V from a pad just two miles south.

Falcon 9 is now scheduled to launch Starlink 4-9 from Kennedy Space Center (KSC) Launch Complex 39A no earlier than (NET) 9:35 am EST (14:35 UTC) on Thursday, March 3rd. Oddly, unlike Starlink 4-8, which successfully launched 46 Starlink satellites into low Earth orbit (LEO) on February 21st, Starlink 4-9 – following a seemingly identical trajectory – will carry 47 satellites. The reason for the small difference is unclear.

Last month, SpaceX suffered a significant anomaly when a “geomagnetic storm” warmed Earth’s atmosphere, causing 38 of 49 just-launched Starlink 4-7 satellites to prematurely reenter and burn up. In response, while SpaceX hasn’t officially confirmed the change, it appears that all subsequent Starlink missions are being launched to slightly higher parking orbits. In comparison, Starlink 4-4 – a West Coast mission – launched 52 satellites into a 340 x 210 kilometer (210 x 130 mi) parking orbit in December 2021. Starlink 4-7, an East Coast mission, launched 49 satellites into a 336 x 210 km parking orbit on February 3rd, losing three satellites to account for extra performance needed to safely dodge the Bahamas.

Following Starlink 4-7’s space weather calamity, SpaceX – using an identical trajectory – launched 46 Starlink 4-8 satellites (three fewer than 4-7) from the East Coast into a higher 337 x 325 km parking orbit on February 21st. On February 25th, SpaceX also launched 50 Starlink 4-11 satellites (a reduction of two) from the West Coast into a higher 316 x 306 km parking orbit. In short, after Starlink 4-7, SpaceX appears to be sacrificing a few Starlink satellites to launch to parking orbits that are slightly higher and thus slightly more stable.

While doomed, Starlink 4-7 was still a beautiful launch. (Richard Angle)

In theory, this should entirely prevent a repeat of the Starlink 4-7 anomaly while only marginally increasing the amount of time it should take dead-on-arrival satellites to reenter. While doing so increases the number of satellites Falcon 9 can launch, the main reason SpaceX launches Starlink satellites to such low orbits is to ensure that any failed satellites reenter a matter of days to a few weeks after launch instead of the years it could take at their operational ~550 km (~340 mi) orbits.

Of course, that doesn’t explain why Starlink 4-9 is projected to launch one more Starlink satellite than Starlink 4-8. It’s possible that SpaceX is refining its new insertion orbit on the fly and that Starlink 4-9 is headed to a slightly lower destination after data gathered from 4-8 and 4-11. It’s also possible that SpaceX is tweaking some other aspect of Falcon 9’s mission profile or even modifying Starlink satellites (i.e. adding or subtracting mass) – neither of which would be out of the ordinary for the company.

Regardless, Starlink 4-9 is interesting for a few more reasons. First, it will mark drone ship Just Read The Instruction’s (JRTI) first recovery mission since a mistake made by its onboard Octagrabber rocket nearly lead to the loss of an entire Falcon 9 booster in December 2021. That implies that SpaceX has fully determined and rectified the cause of that anomaly and repaired both the drone ship and its robot. To reach its full launch cadence potential, SpaceX needs at least two operational drone ships on the East Coast. Otherwise, in lieu of rare low-performance missions that allow Falcon 9 boosters to fly back to land, SpaceX can only launch one East Coast Falcon 9 mission every 10 or so days and can’t support Falcon Heavy launches that require two at-sea booster landings.

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Falcon 9 B1051. (Richard Angle)
Falcon 9 B1058. (Richard Angle)
Falcon 9 B1060. (Richard Angle)

Additionally, SpaceX has confirmed that Falcon 9 B1060 will launch Starlink 4-9. The mission will be its 11th launch and landing attempt, hopefully making it the third Falcon 9 booster to successfully support 11 orbital-class launches after B1051 and B1058. Together, that means that 3 (15%) of the 19 Falcon 9 Block 5 boosters SpaceX has debuted will have singlehandedly supported 33 (37%) of the 89 Falcon 9 launches the company has completed since May 2018. It’s difficult to imagine a more resounding affirmation of SpaceX’s work on reusability.

Tune in to SpaceX Starlink 4-9 webcast around 9:20 am EST (14:20 UTC) on Thursday, March 3rd to watch the launch live.

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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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3 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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17 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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18 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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