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SpaceX delays Starhopper’s first flight a few days despite Raptor preburner test success
SpaceX has (partially) ignited Starhopper’s freshly-installed Raptor engine, successfully verifying that the engine is ready for its next major test: a full ignition and static firing. Although successful, SpaceX still has some work to do before the vehicle is ready for its first untethered flight(s).
July 15th’s progress is just the latest in a several day-series of preflight tests designed to reduce the likelihood that Starhopper is destroyed over the coming days and (hopefully) weeks. If all goes planned during the awkward Starship prototype’s first foray into hover tests, SpaceX CEO Elon Musk has stated that he will provide an official presentation updating the public on the status of the company’s ever-changing next-generation rocket.
The past week or so of Starhopper preflight testing began with Raptor serial number 6 (SN06) completing the last of a series of acceptance test fires in McGregor, Texas on June 10th. Even on its own, this was a major milestone for the new SpaceX engine: Raptor SN06 was the first of the new, full-scale engines to pass the acceptance test program with flying colors. According to Musk, for the engine to complete those tests so successfully, SpaceX had to solve a challenging bug in which some sort of mechanical resonance (i.e. vibration) damaged or destroyed Raptors SN01-05.
Hours later, the engine began a short ~450 mi (720 km) journey south to Starhopper, located in Boca Chica, Texas. The engine arrived on July 11th and was fully installed on Starhopper by the following evening (July 12th), at which point SpaceX put Starhopper and Raptor through some mild but valuable thrust vector controller (TVC) tests, wiggling the car-sized engine to ensure it can accurately steer the prototype rocket.
Around two days after the above ‘wiggle’ test was successfully completed, SpaceX moved into the next stage, partially fueling Starhopper with liquid methane and oxygen propellant and helium pressurant in what is known in rocketry as a wet dress rehearsal (WDR). The (implicitly) successful WDR was capped off with a duo of what can now safely be concluded were some sort of Raptor test preceding even pre-ignition operations. Whatever the tests were, they appear to have been completed successfully.
That appears to be the case because less than 24 hours after their completion, on July 15th, SpaceX once again began loading Starhopper with propellant and pressurant for a second round of wet testing. This time around, SpaceX got right into more critical Raptor tests once enough propellant was loaded, igniting the engine’s interwoven oxygen and methane preburners.
Previously discussed 24 hours ago in a Teslarati article focused on Raptor wiggles and other miscellaneous tests, Raptor is an extremely advanced rocket engine based on a cycle (i.e. how propellant is turned into thrust) known as full-flow staged combustion.
“In a staged-combustion engine like Raptor, getting from the supercool liquid oxygen and methane propellant to 200+ tons of thrust is quite literally staged, meaning that the ignition doesn’t happen all at once. Rather, the preburners – essentially their own, unique combustion chambers – ignite an oxygen- or methane-rich mixture, the burning of which produces the gas and pressure that powers the turbines that bring fuel into the main combustion chamber. That fuel then ignites, producing thrust as they exit the engine’s bell-shaped nozzle.
Unintuitively, conditions inside the preburner – hidden away from view – are actually far more intense than the iconic blue, purple, and pink flame that visibly exists Raptor’s nozzle. Much like hot water will cool while traveling through pipes, the superheated gaseous propellant that Raptor ignites to produce thrust will also cool (and thus lose pressure) as it travels from Raptor’s preburner to its main combustion chamber. If the pressure produced in the preburners is too low, Raptor’s thrust will be (roughly speaking) proportionally limited at best. At worst, low pressure in the preburners can trigger a “hard start” or shutdown that could destroy the engine. According to Elon Musk, Raptor’s oxygen preburner thus has the worst of it, operating at pressures as high or higher than 800 bar (11,600 psi, 80 megapascals).”
In full-flow staged combustion (FFSC), even more complexity is added as all propellant that touches the engine must necessarily end up traveling through the main combustion chamber to eke every last ounce of thrust out of the finite propellant a rocket lifts off with. As such, FFSC engines can be about as efficient as the laws of physics allow any given chemical rocket engine to be, at the cost of exceptional complexity and brutally difficult development.
Additionally, FFSC physically requires two separate preburners and then makes things even harder by making each separate preburner (methane and oxygen) depend on each other’s operation for the engine to fully ignite. This means that no individual preburner can be used to kickstart Raptor – instead, SpaceX must somehow spin the turbopumps that feed propellant into each preburner with some separate system. This is all just to emphasize the fact that Raptor’s ignition sequence is a spectacularly complex orchestra of valves, spark plugs, sensors, and magic. This is why it’s valuable for Raptor to test its preburner system independently of an actual ignition test, at least as long as the engine is still in the development stages.
According to NASASpaceflight.com managing editor Chris Bergin, what this practically translates to is a minor Starhopper hover test delay of 1-2 days, while the static fire has also been pushed roughly 24 hours from July 15th to July 16th. If that full static fire produces lots of happy data, Starhopper could be cleared for a hover test debut attempt as early as Wednesday or Thursday (July 17/18).
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Ford cancels all-electric F-150 Lightning, announces $19.5 billion in charges
“Rather than spending billions more on large EVs that now have no path to profitability, we are allocating that money into higher returning areas, more trucks and van hybrids, extended range electric vehicles, affordable EVs, and entirely new opportunities like energy storage.”
Ford is canceling the all-electric F-150 Lightning and also announced it would take a $19.5 billion charge as it aims to quickly restructure its strategy regarding electrification efforts, a massive blow for the Detroit-based company that was once one of the most gung-ho on transitioning to EVs.
The announcement comes as the writing on the wall seemed to get bolder and more identifiable. Ford was bleeding money in EVs and, although it had a lot of success with the all-electric Lightning, it is aiming to push its efforts elsewhere.
It will also restructure its entire strategy on EVs, and the Lightning is not the only vehicle getting the boot. The T3 pickup, a long-awaited vehicle that was developed in part of a skunkworks program, is also no longer in the company’s plans.
Instead of continuing on with its large EVs, it will now shift its focus to hybrids and “extended-range EVs,” which will have an onboard gasoline engine to increase traveling distance, according to the Wall Street Journal.
“Ford no longer plans to produce select larger electric vehicles where the business case has eroded due to lower-than-expected demand, high costs, and regulatory changes,” the company said in a statement.
🚨 Ford has announced it is discontinuing production of the F-150 Lightning, as it plans to report a charge of $19.5 billion in special items.
The Lightning will still be produced, but instead with a gas generator that will give it over 700 miles of range.
“Ford no longer… pic.twitter.com/ZttZ66SDHL
— TESLARATI (@Teslarati) December 15, 2025
While unfortunate, especially because the Lightning was a fantastic electric truck, Ford is ultimately a business, and a business needs to make money.
Ford has lost $13 billion on its EV business since 2023, and company executives are more than aware that they gave it plenty of time to flourish.
Andrew Frick, President of Ford, said:
“Rather than spending billions more on large EVs that now have no path to profitability, we are allocating that money into higher returning areas, more trucks and van hybrids, extended range electric vehicles, affordable EVs, and entirely new opportunities like energy storage.”
CEO Jim Farley also commented on the decision:
“Instead of plowing billions into the future knowing these large EVs will never make money, we are pivoting.”
Farley also said that the company now knows enough about the U.S. market “where we have a lot more certainty in this second inning.”
SpaceX employees, including its CEO Elon Musk, shaded American Airlines on social media this past weekend due to the company’s reported talks with Amazon’s Starlink rival, Leo.
Starlink has been adopted by several airlines, including United Airlines, Qatar Airways, Hawaiian Airlines, WestJet, Air France, airBaltic, and others. It has gained notoriety as an extremely solid, dependable, and reliable option for airline travel, as traditional options frequently cause users to lose connection to the internet.
Many airlines have made the switch, while others continue to mull the options available to them. American Airlines is one of them.
A report from Bloomberg indicates the airline is thinking of going with a Starlink rival owned by Amazon, called Leo. It was previously referred to as Project Kuiper.
American CEO Robert Isom said (via Bloomberg):
“While there’s Starlink, there are other low-Earth-orbit satellite opportunities that we can look at. We’re making sure that American is going to have what our customers need.”
Isom also said American has been in touch with Amazon about installing Leo on its aircraft, but he would not reveal the status of any discussions with the company.
The report caught the attention of Michael Nicolls, the Vice President of Starlink Engineering at SpaceX, who said:
“Only fly on airlines with good connectivity… and only one source of good connectivity at the moment…”
CEO Elon Musk replied to Nicolls by stating that American Airlines risks losing “a lot of customers if their connectivity solution fails.”
American Airlines will lose a lot of customers if their connectivity solution fails
— Elon Musk (@elonmusk) December 14, 2025
There are over 8,000 Starlink satellites in orbit currently, offering internet coverage in over 150 countries and territories globally. SpaceX expands its array of satellites nearly every week with launches from California and Florida, aiming to offer internet access to everyone across the globe.
Currently, the company is focusing on expanding into new markets, such as Africa and Asia.
News
Tesla Model Y Standard stuns in new range test, besting its Premium siblings
Tesla’s newer vehicles have continued to meet or exceed their EPA estimates. This is a drastic change, as every 2018-2023 model year Tesla that Edmunds assessed did not meet its range estimates.
The Tesla Model Y Standard stunned in a new range test performed by automotive media outlet Edmunds, besting all of its Premium siblings that are more expensive and more luxurious in terms of features.
Testing showed the Model Y Standard exceeded its EPA-estimated range rating of 321 miles, as Edmunds said it is the “longest-range Model Y that we’ve ever put on our loop.” In the past, some vehicles have come up short in comparison with EPA ranges; for example, the Model Y’s previous generation vehicle had an EPA-estimated range of 330 miles, but only drove 310.
Additionally, the Launch Series Model Y, the first configuration to be built in the “Juniper” program, landed perfectly on the EPA’s range estimates at 327 miles.
It was also more efficient than Premium offerings, as it utilized just 22.8 kWh to go 100 miles. The Launch Series used 26.8 kWh to travel the same distance.
It is tested using Edmunds’ traditional EV range testing procedure, which follows a strict route of 60 percent city and 40 percent highway driving. The average speed throughout the trip is 40 MPH, and the car is required to stay within 5 MPH of all posted speed limits.
Each car is also put in its most efficient drive setting, and the climate is kept on auto at 72 degrees.
“All of this most accurately represents the real-world driving that owners do day to day,” the publication says.
With this procedure, testing is as consistent as it can get. Of course, there are other factors, like temperature and traffic density. However, one thing is important to note: Tesla’s newer vehicles have continued to meet or exceed their EPA estimates. This is a drastic change, as every 2018-2023 model year Tesla that Edmunds assessed did not meet its range estimates.
Tesla Model Y Standard vs. Tesla Model Y Premium
Tesla’s two Model Y levels both offer a great option for whichever fits your budget. However, when you sit in both cars, you will notice distinct differences between them.
The Premium definitely has a more luxurious feel, while the Standard is stripped of many of the more premium features, like Vegan Leather Interior, acoustic-lined glass, and a better sound system.
You can read our full review of the Model Y Standard below:
Tesla Model Y Standard Full Review: Is it worth the lower price?
Ford cancels all-electric F-150 Lightning, announces $19.5 billion in charges
SpaceX shades airline for seeking contract with Amazon’s Starlink rival
