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SpaceX Falcon 9 nears NASA’s first flight-proven Block 5 launch after static fire delays
After multiple days of delays, many a finger is crossed that SpaceX will be able to perform a critical static fire test of Falcon 9 booster B1056.1 on Friday morning (July 19th).
Falcon 9 B1056 and a fresh upper stage are scheduled to launch Cargo Dragon mission CRS-18 no earlier than 7:35 pm EDT (23:35 UTC), July 21st. As always, SpaceX requires each Falcon 9 rocket to successfully perform a static fire ignition test prior to declaring launch readiness, and B1056 was originally planned to be loaded with propellant and fire its nine Merin 1D engines on Wednesday, July 16th.
After a solid handful of slips, the test has most recently been rescheduled on Friday morning, a delay of 48 hours. SpaceX has demonstrated a three-day turnaround between static fire and launch with Falcon 9 Block 5, but a static fire delay beyond Friday – perhaps even beyond early Friday afternoon – will almost certainly push CRS-18’s launch back a day or two. If not, SpaceX is certainly cutting it close to make the current July 21st date.
In support of Cargo Dragon Commercial Resupply Mission-17 (CRS-17), Falcon 9 B1056 launched for the first time on May 4th, roughly 11 weeks (76 days) ago and 78 days before its planned return to flight. For both SpaceX and NASA, CRS-18 will be a fairly significant launch for a variety of reasons
Falcon2
First and foremost, Falcon 9 B1056 previously supported a NASA Cargo Dragon mission, as described above. Even before the booster successfully landed and returned to port, plans were already in order to essentially keep the booster “in family”, reusing it for NASA launches only. Discussed on Teslarati immediately after the subject was broached during a post-launch press conference, NASA manager Kenny Todd didn’t split hairs.
“Quite frankly, [NASA] had a vested interest in this particular booster. We were gonna require it – the intent is to [reuse B1056 on SpaceX’s upcoming CRS-18 launch] and – potentially – CRS-19.”
Kenny Todd, ISS Operations and Integration Manager, NASA Johnson
Not only will NASA fly Cargo Dragon’s CRS-18 mission on B1056, but the agency is already actively considering reusing the same Falcon 9 booster – assuming a successful launch and landing next week – on CRS-19, SpaceX’s second-to-last Dragon 1 (i.e. Cargo Dragon) launch. If all goes well with CRS-18, CRS-19 could come as early as December 2019, while CRS-20 – likely Dragon 1’s last launch ever – is scheduled no earlier than March 2020 and could certainly make use of B1056.3 if NASA is interested.
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Meanwhile, although neither SpaceX or NASA have confirmed it, the Cargo Dragon capsule flight-proven Falcon 9 B1056 will itself be flight-proven – although that’s nothing shocking after a full half-dozen successful launches of reused capsules. What will be exceptional, however, is the likely event that CRS-18 will mark the first time that SpaceX has launched the same Cargo Dragon capsule on its third orbital mission.
Speaking all the way back in summer 2017, now two years distant, SpaceX CEO Elon Musk revealed that Cargo Dragon (Dragon 1) was designed at the outset to be reused three times. Almost exactly 24 months later, SpaceX is likely to prove that that is the case. Based on a list of known Dragon 1 capsules and their serial numbers, SpaceX has already launch and reused all but one of the last seven capsules built and successfully recovered. Capsule 107 (C107) supported CRS-5 in January 2015 and was successfully recovered one month later.
Aside from CRS-7 capsule C109, destroyed in June 2015 during Falcon 9’s first and only in-flight failure, all other capsules (C108-C113) have been successfully launched, recovered, and relaunched. As such, it seems extremely improbable that CRS-5 capsule C107 will be supporting CRS-18. Instead, one of SpaceX’s six twice-flight-proven orbital spacecraft has likely been refurbished for the final time, preparing to become the first orbital-class commercial spacecraft to be reused twice.
Thy Holy Stripe
Finally, it also appears that CRS-18 will mark the debut some sort of on-orbit Falcon upper stage test, hinted at by a grey ring wrapping what looks like just a portion of its fuel (RP-1/kerosene) tank. The objective of this modification is unclear, although chances are good that either NASASpaceflight.com or SpaceX itself will provide at least a bit more information in the coming days.
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SpaceX’s Raptor engine family has steadily increased sea-level thrust while simultaneously reducing mass, turning iterative engineering gains into substantially higher performance for the Super Heavy booster. CEO Elon Musk shed more light on how powerful Raptor 4 will be, and it’s pretty crazy.
Raptor 1 delivered 185 metric tons of thrust at roughly 2,080 kilograms, while Raptor 2 raised that to 230 tons while cutting mass to about 1,630 kilograms. SpaceX data for Raptor 3 lists a target of 280 tons at 1,525 kilograms (with further reductions in associated vehicle hardware), while operational flight ratings have been cited near 250 tons.
This morning, Elon Musk stated that Raptor 4 is expected to reach 300 tons of sea-level thrust at roughly the same mass as Raptor 3. Across these versions, thrust has risen by more than 60 percent from the first engines while engine mass has fallen, producing a sharp improvement in thrust-to-weight ratio. This is a true testament to how great SpaceX engineering has been:
🚀 Elon says Raptor 4 will make 300 tons of thrust at sea level at roughly the same mass as Raptor 3.
How far Raptor has come:
Raptor 1: 185 tf, 2,080 kg
Raptor 2: 230 tf, 1,630 kg
Raptor 3: 250 tf, 1,525 kg
Raptor 4: 300 tf33 on Super Heavy = ~9,900 tf, nearly 3x Saturn V https://t.co/HQDswZhyvL
— TESLARATI (@Teslarati) October 26, 2026
With 33 engines on SuperHeavy, the jump from earlier versions to a 300-ton Raptor 4 would produce roughly 9,900 metric tons of total liftoff thrust, nearly three times the Saturn V’s approximately 3,400 metric tons from its five F-1 engines.
This is not just a larger number on a data sheet, either, as sea-level thrust is the force available the moment the vehicle leaves the pad. This is when it is heaviest and still deep in Earth’s gravity well and dense atmosphere.
Higher levels of sea-level thrust directly improves the initial thrust-to-weight ratio of the full stack. A higher ratio produces faster acceleration off the pad, which shortens the time the rocket has to spend fighting gravity, and gravity losses during the first minute or two of the flight are a major drain on total available delta-v. Every second shaved off of that early climb preserves more propellant energy for reaching orbital velocity or for carrying extra payload.
Because Super Heavy’s engine count is constrained by vehicle diameter and packing density, increasing thrust per engine is the most straightforward way to raise total liftoff performance without redesigning the booster structure or design.
The same-mass target for Raptor 4 is equally important. Holding engine mass roughly constant while raising thrust improves the engine’s own thrust-to-weight ratio and reduces the structural and propellant mass fraction that must be carried solely to support the engines.
Earlier Raptor iterations also simplified or eliminated extensive vehicle-side hardware such as heat shields. These gains compound: more force for less installed mass leaves additional capacity for propellant, payload, or operational margins such as engine-out capability.
For Starship’s architecture, the practical effects are large. Greater liftoff thrust supports heavier vehicles, larger propellant loads, and higher payloads to low Earth orbit, figures SpaceX has targeted in the 100-plus-ton reusable range. That capacity underpins orbital refueling, lunar missions, and eventual Mars cargo and crew flights.
Continued growth in sea-level thrust therefore tightens the gap between theoretical rocket performance and the high flight rates and reusability needed to make large-scale space transport practical.
Tesla has expanded its Tesla Assisted Driving (TAD) suite to its tenth European country, as Latvia joined a growing list of European Union member states authorizing the company’s advanced driver assistance technology.
Tesla Europe announced this morning that the system is now approved in Latvia, with a software rollout to begin soon.
The approval and rollout follow recognition of a provisional European type approval originally granted by the Netherlands’ RDW authority on April 10.
🚨 Latvia has just received approval for Tesla Full Self-Driving (Supervised)
This is the 10th country in the EU to gain approval:
1. Netherlands — 10 April 2026 (original RDW approval)
2. Lithuania — 20 May 2026
3. Estonia — 29 May 2026
4. Denmark — 9 June 2026
5. Belgium — 10 June 2026
6. Slovenia — 7 September 2026
7. Czechia — 21 September 2026
8. Croatia — 29 September 2026
9. Slovakia — 16 October 2026— TESLARATI (@Teslarati) October 26, 2026
Latvia’s Road Traffic Safety Directorate (CSDD) evaluated the Dutch documentation, coordinated with the other national authorities, and reviewed updates from Tesla. These included tightened limits on speed offsets, automatic resets of any manual speed adjustments after each trip, and stronger driver monitoring.
In Europe, the feature is marketed as Tesla Assisted Driving after a recent rule change that labeled the name “Full Self-Driving” as misleading.
The system remains an SAE Level 2 driver assistance tool, not unsupervised autonomy. It can control speed, steering, braking, lane changes, and intersections while following a navigation route. Drivers need not keep their hands on the wheel at all times, yet they must continuously monitor the road and be prepared to intervene immediately.
The sequence of EU recognitions began with the Netherlands in April and continued through Lithuania, Estonia, Denmark, Belgium, Slovenia, Czechia, Croatia, and Slovakia. Most have relied on mutual recognition of the single Dutch provisional approval rather than independent national testing.
These national clearances do not yet constitute bloc-wide authorization. An EU-wide decision requires a qualified majority in the Technical Committee on Motor Vehicles: at least 15 of 27 member states representing 65 percent of the EU population. Larger markets, like Germany, France, and Italy, remain under review, and a vote is expected this December.
However, for Latvian Tesla owners with compatible vehicles and software, the imminent rollout expands access to the supervised system while underscoring that attentive human oversight remains essential.
Tesla expanded its Robotaxi geofence in Houston, Texas, today, enlarging the service area and drawing a new rocket-shaped boundary across the city’s northwestern and central parts.
Although CEO Elon Musk said it was just a coincidence, the expansion seems to be an ode to SpaceX and its potential merger with Tesla.
🚨 Tesla has just expanded its Robotaxi geofence in Houston
It looks a lot like a rocket — we all remember the shape in Austin 🤣 https://t.co/cFOPEuiJ4u
— TESLARATI (@Teslarati) October 26, 2026
The official Tesla Robotaxi account announced the change with the lines “Houston, we have liftoff” and “Bigger service area now live,” pairing them with a map overlay.
The prior white geofence, roughly 25 square miles covering Jersey Village, Harvest Bend, and the Willowbrook corridor along U.S. 290 and State Highway 249, now sits inside a larger blue zone that stretches southeast toward Bellair and closer to central Houston.
Houston’s Robotaxi service launched on April 18, 2026, the same day as Dallas, as Tesla’s first unsupervised public expansion beyond Austin. From the start, the vehicles were Model Ys running without anyone in the front seats, booked through the dedicated Tesla Robotaxi app and open to the public inside the geofence.
Trackers measured the initial zone at about 25 square miles; by late September it had not grown substantially. Community and registry data indicated a modest local fleet of unsupervised Model Ys, while dozens to nearly 200 Cybercabs, the purpose-built, steering-wheel-free two-seaters, have been spotted staging and testing in Houston lots, though public Cybercab rides remain limited to Austin for now.
Across the broader Robotaxi program, Tesla began public Robotaxi rides in Austin in June 2025, as a small geofence and vehicles with safety monitors became available for a ride-hailing service. Later on, Tesla removed the monitors and steadily expanded the service area until it covered most of the Austin metro area.
Unsupervised Robotaxi services now run in six cities: Austin, Dallas, Houston, Miami, Orlando, and Tampa. Cumulative driverless miles reported by the company have reached several million. The Cybercab entered public service in Austin in early September 2026 and has scaled rapidly there. The company has also said that Dallas is next for Cybercab rides in November, with further cities and 24/7 hours targeted by year-end, plus fleet-operator sales of the vehicle.
Waymo also operates a fully driverless service in Houston, which has been open to the public since August of this year.
The Houston expansion continues Tesla’s pattern of starting with tightly controlled validation zones before widening coverage as real-world data accumulates, while the rocket motif on the map underscores the company’s habit of injecting visual flair into its autonomy rollout.
Riders inside the new boundary can request unsupervised Model Y trips in the Robotaxi app; exact operating hours and further Cybercab availability remain subject to app updates and company statements.
How SpaceX Is raising Raptor’s sea-level thrust while holding engine mass steady
Tesla Assisted Driving expands to tenth EU country
