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SpaceX Falcon 9 Block 5 booster ends launch #2 with spectacular dawn return

Falcon 9 B1049 returned to Port of Los Angeles after its second successful launch and landing in four months. (Pauline Acalin)

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8 years ago

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SpaceX Falcon 9 booster B1049 has completed its second successful launch and landing with a spectacular dawn return to Port of Los Angeles, where engineers and technicians will work to remove the rocket’s grid fins and landing legs and prepare the vehicle for transport to the company’s Hawthorne, CA factory and refurbishment facilities.

Once post-recovery processing is complete and B1049 is safe and snug inside one of SpaceX’s refurbishment facilities, the booster can be expected to be ready to perform its next (third) orbital-class mission perhaps just 2-3 months from now, whether or not there is a mission that needs its support.

Just ~48 hours after the Block 5 booster’s second successful launch and landing, this time aboard drone ship Just Read The Instructions (JRTI) after supporting the historic Iridium-8 mission, JRTI pulled into Port of Los Angeles with Falcon 9 in tow, backlit by a picturesque California sunrise. In September 2018, the same booster (B1049) successfully completed its launch debut from SpaceX’s LC-40 launch pad in Cape Canaveral, Florida before landing safely aboard drone ship Of Course I Still Love You (OCISLY).

This marks the second time ever that a Falcon 9 booster has launched from both coasts (Cape Canaveral, FL and Vandenberg, CA) and landed on both SpaceX drone ships (JRTI and OCISLY), an event that will likely become increasingly common as the company’s growing fleet of Falcon 9 Block 5 boosters become increasingly flexible and interchangeable. It’s also equally possible that – over time – a sort of regional fleet of Falcon 9s will ultimately accumulate at each of SpaceX’s three launch pads, ensuring that there is always a rocket ready and waiting to launch a customer payload with short notice and minimal production or refurbishment-related delays.

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Among many of Falcon 9’s almost sculpture-like qualities, Teslarati photographer Pauline Acalin’s photos of the booster’s return exemplify just how reliably unperturbed Block 5 appears after performing multiple orbital-class launches, far from a rocket that traveled to ~90 km (~56 mi) while reaching speeds of 1.9 kilometers per second (6830 km/h, 4300 mph). SpaceX now reliably reuses Falcon 9’s titanium grid fins and landing legs with little to no refurbishment or touching up between launches and should eventually be able to retract the rocket’s legs after recovery, further cutting down on processing and refurbishment times.

Greater reusability, greater reliability?

As of today, it’s unclear how big of a role Falcon 9 Block 5 booster refurbishment has played into several hardware-readiness-related delays to several recent flight-proven Falcon 9 launches (SSO-A, SAOCOM 1A, and Iridium-8), but it is ultimately a fundamental reality of all manufacturing that rushing or ‘expediting’ work will typically hurt product quality and reliability and generally widen the cracks that mistakes can slip through. Interestingly, having a truly large fleet of flight-proven Falcon 9 Block 5 rockets on hand could dramatically improve the overall launch-readiness of Falcon 9 and Falcon Heavy and minimize chances of processing delays across the board.

SpaceX employees may already be to a point where they can plausible take stock of the company’s already-significant fleet of flight-proven Falcon 9s (B1046-B1049) to decide which booster is closest to launch-readiness before assigning it to a given mission. With four proven boosters on hand as of January 2019, options are fairly limited and regionality is likely to factor heavily into which booster launches which mission – there is no real cushion if problems arise with a given rocket or its preceding launch suffers its own delays. However, once that Falcon fleet grows to something like 10 or 15 booster, SpaceX could conceivably be able to guarantee booster availability regardless of prior launch delays or a given rocket’s condition after landing.

 

This  may well be far less sexy than SpaceX’s ultimate goal of drop-of-the-pin, 24-hour reusability for Falcon and BFR boosters, but the fundamental fact of the matter is that the company may well be able to derive a vast majority of that practice’s value by simply having a large, well-kept fleet of Falcon 9 boosters that are at least moderately reusable. For a hefty chunk of the probable near-term future, a large fleet of rockets each capable of launching every 30-60 days would likely be able to support launch cadences that are currently unprecedented for a single company or rocket (i.e. dozens of launches per year).

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Time is money, of course, so minimizing the turnaround time of Falcon boosters will ultimately remain a major priority, especially as the prospect of Starlink launches loom.

For prompt updates, on-the-ground perspectives, and unique glimpses of SpaceX’s rocket recovery fleet check out our brand new LaunchPad and LandingZone newsletters!

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

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5 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.

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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.

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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

7 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.

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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.

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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.

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

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Lifestyle

Watch Tesla’s “guardian angel” FSD feature take over for collision evasion

Published

21 hours ago

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September 28, 2026

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Tesla’s Automatic Collision Evasion feature can be seen in one of the first owner videos of it in action.

Tesla owner Spencer (@scotsrule08) posted on Monday that the feature “worked flawlessly,” saying FSD reengaged itself just as he was about to hit a curb. Ashok Elluswamy, who leads Tesla’s AI team, shared the clip and wrote, “A guardian angel always looking out for you.”

The video arrives in the middle of a staged rollout. Tesla first shipped Automatic Collision Evasion with FSD (Supervised) v14.3.9 in software update 2026.27.6 earlier this month, which Teslarati covered as it reached cars. Update 2026.27.10, which began going out on September 19, carried the feature improvements with FSD v14.3.10, according to release notes tracked by Not a Tesla App. The newer 2026.27.11 build is now reaching another wave of vehicles.


The feature only runs on HW4 vehicles, and it requires an active FSD purchase or subscription with both FSD (Supervised) and Automatic Emergency Braking enabled. HW3 owners receive FSD v14.2 Lite in the same updates, but that build does not include collision evasion.

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Tesla’s release notes describe two triggers. The first is an imminent frontal collision that braking alone may not prevent, in which case the car can activate FSD to steer, brake or accelerate around the hazard. That scenario is limited to highways below 85 mph, with no pedestrians or cyclists detected and no slippery road surface. The second covers a driver who appears inattentive, such as reaching into the back seat, or who seems to have switched off FSD by accident. Spencer’s curb clip appears to fall into that second category.

Tesla plans big safety improvements for Full Self-Driving v15

Once the system takes over, the accelerator is muted and light brake input will not cancel the maneuver. Drivers need to apply firm, deliberate steering force to take back control, and the car chimes to hand control back once the danger has passed.

Elluswamy recently noted that earlier hazard prediction, faster reaction time and better collision avoidance would arrive with FSD v15, the next major version.

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