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SpaceX may have signed a fairing agreement with ULA supplier RUAG (Update: no agreement)
According to unverified and speculative comments reportedly made to a member of the space industry by a RUAG spokesperson, the prominent aerospace supplier may have reached an agreement with SpaceX to manufacture a handful of larger payload fairings for future Falcon 9 and Heavy launches.
In the likely event that SpaceX is one of two contractors awarded a portion of several dozen US military launch contracts next year, the company will need to be able to cater to niche requirements, including accommodating unusually tall military satellites. Those satellites can be so tall that SpaceX’s own payload fairing – generally middle-of-the-pack relative to competitors’ offerings – may be too short, meaning that SpaceX will have to find ways around that minor shortcoming.
Update: Tim Chen has retracted his earlier comments and has stated that there is actually no agreement currently in place with SpaceX for RUAG to produce taller fairings out of its new Decatur, AL factory.
Additionally, ULA CEO Tory Bruno clarified that the company’s “[new fairing] has [ULA] intellectual property in its design and manufacture … [and] is currently planned only for use on Atlas and Vulcan”, meaning that any cooperation between SpaceX and RUAG would likely require a new production facility and a somewhat different fairing design.
“ULA’s new fairing, which is built in our factory in Decatur, has our intellectual property in its design and manufacture. This fairing is currently planned only for use on Atlas and Vulcan. You would want to ask RUAG about business they might have with their other customers.”
Tory Bruno, August 14th, 2019
Regardless of the veracity of these recent claims, it appears that SpaceX has three obvious responses at its disposal: design and build an entirely new variant of its universal Falcon fairing, purchase the necessary fairings from an established supplier, or bow out of launch contract competitions that demand it. The latter option is immediately untenable given that it could very well mean bowing out of the entire US military competition, known as Phase 2 of the National Security Space Launch program’s (NSSL; formerly EELV) Launch Services Procurement (LSP).
For dubious reasons, the US Air Force (USAF) has structured the NSSL Phase 2 acquisition in such a way that – despite there being four possible competitors – only two will be awarded contracts at its conclusion. The roughly ~30 launch contracts up for grabs would be split 60:40 between the two victors, leaving two competitors completely emptyhanded. In short, bowing out of the Phase 2 competition could mean forgoing as many as one or two-dozen contracts worth at least $1-2B, depending on the side of the 60:40 split.
According to a handful of recent comments and developments, SpaceX has likely sided with the option of procuring taller fairings from an industry supplier. As it turns out, European company RUAG has effectively cornered the Western rocket fairing market, with SpaceX being the only Western launch company currently building its own fairings. RUAG builds fairings for both Arianespace’s Ariane 5 and Vega rockets and ULA’s Atlas V. Additionally, RUAG will build and supply fairings for both companies’ next-gen rockets – Arianespace’s Ariane 6 and ULA’s Vulcan – and builds fairings for a number of smallsat launch companies.
Comments made in June by a RUAG official confirmed that there was some semblance of a relationship between SpaceX and RUAG for the purpose of satisfying USAF needs for taller fairings, although the phrasing suggested that the cooperation was in its early stages and nothing had been solidified.
“In a June 12 letter to Smith, the company’s CEO Peter Guggenbach makes the case that legislation forcing access to suppliers is unnecessary in this case because RUAG does not have an exclusive arrangement with ULA and is willing to work with SpaceX or any other launch providers.
“For this competition, we are in the process of submitting or have submitted proposals to multiple prime contractors regarding launch vehicle fairings. In those agreements, we share technical data to support a prime contractor’s bid while protecting our intellectual property.”
RUAG vice president Karl Jensen told SpaceNews the company has a “significant partnership” with ULA but is looking to work with others too. “We have an offer to SpaceX,” he said. “We don’t know if they’ll accept it.”
SpaceNews, 06/13/2019
Interestingly, although ULA’s RUAG-built Atlas V fairing is slightly narrower than SpaceX’s 5.2m (17 ft) diameter fairing, Atlas V’s largest fairing is significantly taller, supporting payloads up to 16.5m (54 ft) tall compared to 11m (36 ft) for Falcon 9 and Heavy. Given that just a tiny portion of military spacecraft actually need fairings that tall, SpaceX is apparently not interested in simply modifying its own fairing design and production equipment to support a 20-30% stretch.
This likely relates in part to the fact that one of SpaceX’s three NSSL Phase 2 competitors – Northrop Grumman (Omega), Blue Origin (New Glenn), and ULA (Vulcan) – are guaranteed to receive hundreds of millions of dollars of development funding after winning one of the two available slots (60% or 40% of contracts). SpaceX, on the other hand, will receive no such funding while still having to meet the same stringent USAF requirements compete in LSP Phase 2. Of note, Congressman Adam Smith managed to insert a clause into FY2020’s defense authorization bill that could disburse up to $500M to SpaceX in the event that the company is one of Phase 2’s two winners.
Despite this potential influx of infrastructure-focused funds, SpaceX may still be pursuing taller Falcon fairings from RUAG as a backup in the event that the company is not one of the two Phase 2 winners or is unable to use some of the $500M secured by Rep. Smith to develop its own stretched fairing.
On August 12th, SpaceX – along with Blue Origin, ULA, and NGIS – submitted bids for NSSL Phase 2 launch services, confirming that all four companies will indeed be in the running for contracts. The USAF is not expected to announce the results of this competition until Q2 2020.
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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
