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SpaceX's "Christmas tree" is a Raptor engine for the holidays

Raptor performs a static fire test at SpaceX's McGregor, Texas development facilities. (SpaceX)

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6 years ago

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SpaceX CEO Elon Musk showed off a holiday-themed Raptor engine “Christmas tree” with its very own star on top. Musk noted via a tweet that the company’s Starship propulsion team is “making great progress” building, testing, and refining the Raptor engines that will one day propel the next-generation rocket to Earth orbit and beyond.

On December 13th, Musk revealed that SpaceX is preparing to ship the 17th completed Raptor engine to the company’s McGregor, Texas rocket test and development facilities, the site of several dedicated test stands for the Starship engine. Likely one of the most complex rocket engines ever designed, built, or tested, Raptor relies on an exotic combustion cycle, referring to the specifics of how engines turn their propellant into meaningful thrust.

Raptor uses what is known as full-flow staged combustion (FFSC) and is the first FFSC engine to graduate beyond ground testing and actually fly, thus far having completed two flight tests in July and August 2019 as part of SpaceX’s Starhopper test campaign. In simple terms, the FFSC cycle aims to extract as much energy from a rocket’s propellant as efficiently as possible, resulting in what is theoretically the most efficient possible chemical propulsion from a given fuel and oxidizer combination.

Due to the sheer complexity required to achieve full-flow staged combustion, the engine type is incredibly rare and only two other (once) functional examples exist – one developed by Soviet engineers in the 20th century and the other built, tested, and inexplicably scrapped by NASA in the 2000s. In fact, the Soviet RD-270 engine’s thrust-to-weight ratio is likely second only to SpaceX’s own Merlin 1D engine, an absolutely spectacular achievement for a propulsion bureau operating in the late 1960s.

RD-270 had major development challenges and would likely have taken years of additional hardware-rich (i.e. destructive trial and error) testing to produce an engine actually capable of reliable flight. Before the program was cancelled in 1970, 22 engines were tested and no single RD-270 survived to perform a fourth static fire, a testament to the immense challenge of FFSC engines.

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Energomash’s FFSC RD-270 engine.

SpaceX appears to have had a much better go of it with Raptor, although many, many engines have definitely been destroyed or irreparably damaged since the full-scale engine’s February 2019 static fire debut. SpaceX CEO Elon Musk says that the 17th completed Raptor engine is almost ready to head to McGregor, Texas to kick off development and acceptance testing.

It remains to be seen when exactly Raptor engines will be mature and reliable enough to perform the 3-10 minute burns needed to send a Starship to orbit, let alone the Moon or Mars, but Musk appears confident that SpaceX is making great progress along those lines.

Per photos and info posted by NASASpaceflight.com earlier today, Raptor engine SN15 is already installed on a recently-reactivated McGregor test stand ahead of its first rocket-related test in almost half a decade.

Formerly used to test Falcon 9 first stages before SpaceX built a new stand for Falcon 9 and Heavy, that tripod stand has been reactivated for the sole purpose of supporting vertical Raptor engine static fire testing, which Musk says will simplify and expedite development by making test conditions much more flight-like. As of now, all subscale and full-scale Raptor engine static fire testing has been performed at horizontal test stands in McGregor, apparently resulting in wear and behavior that would not likely appear if engines were tested vertically.

SpaceX has gone through the same process with its Merlin engine programs, beginning with horizontal testing (far easier and simpler) but ultimately building a number of dedicated vertical test bays to ensure that engine acceptance and development tests can be performed under more flight-like conditions.

SpaceX’s Merlin 1D (Vacuum and Sea Level) tests stands, as well as a bay for upper stage static fires. (April 17, 2018 – Aero Photo)

According to NASASpaceflight, SpaceX may have already fired up Raptor SN15 on its reactivated tripod test stand earlier this week, kicking off Raptor’s first Starhopper-free vertical static fire testing. It’s now unclear where the twin horizontal Raptor test bays will fit into future engine testing given Musk’s comments. More importantly, every completed Starship and Super Heavy rocket will require several dozen new Raptor engines and every one of those engines will likely need to pass acceptance testing (including static fires) in McGregor before they can be installed on a launch vehicle.

SpaceX’s Falcon 9 rocket already requires 10 engines per new booster and upper stage, a test burden SpaceX has only managed with the help of two Merlin 1D stands and one Merlin Vacuum stand, all vertical. In other words, it’s safe to say that the reactivated tripod stand is likely just the first of several vertical Raptor test stands to come.

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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 launches ‘Mad Max’ Full Self-Driving Speed Profile, its fastest yet

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16 minutes ago

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October 15, 2025

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Credit: Teslarati

Tesla launched its fastest Full Self-Driving Speed Profile with the v14.1.2 Software Update on Wednesday, as “Mad Max” mode has overtaken “Hurry” as the most spirited travel option on FSD.

On Wednesday evening, Tesla’s Head of AI, Ashok Elluswamy, teased that the v14.1.2 Software Update would be released to those drivers in the Early Access Program (EAP). He said it was a “much-awaited feature.”

Tesla just teased something crazy with the next Full Self-Driving update

Many people, myself included, believed it would be the introduction of “Banish,” which would be a perfect complement to the Actually Smart Summon (ASS) suite, as it would find a parking spot and park itself after dropping you off at the front door of your destination.

However, Elluswamy’s post on X finished with two emojis: one a race car, the other being smoke behind the car.

On Wednesday night, we received the v14.1.2 software update to the new Model Y, which revealed that “Mad Max” mode was the new addition:

The release notes state that:

“Introduced new speed profile MAD MAX, which comes with higher speeds and more frequent lane changes than Hurry.”
It is pretty interesting that Tesla would introduce yet another speed profile that is even faster and more aggressive than “Hurry.” Personally, I’ve found Hurry to be realistic in terms of other drivers and their aggressiveness, speed of travel, and overall lane change behavior, especially on interstates.

Mad Max mode will be an interesting adjustment.

Tesla CEO Elon Musk first talked about Mad Max mode back in 2018 in posts on X, first mentioning the feature with the Tesla Semi:

Musk then teased Mad Max mode in 2019 with an early Autopilot update, stating that it would be an ideal option for aggressive traffic seen in places like Los Angeles. There was formerly a mode of the same name back in the late 2010s:

Now that it’s here, we’ll be testing it very soon and giving you a good idea of what to expect when it releases to others in the coming weeks.

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Tesla just teased something crazy with the next Full Self-Driving update

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1 hour ago

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October 15, 2025

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Credit: Tesla Europe & Middle East | X

Tesla just teased something crazy with the next Full Self-Driving update, which will be released to Early Access Program (EAP) members today.

Tesla just recently released the v14 Full Self-Driving update, and it followed up just a few days later with v14.1.1.

The subsequent release helped refine a handful of things, especially an issue with stuttering at intersections and overall indecisiveness, but it was more of a smoothing over of the initial v14.1 Full Self-Driving release.

However, on Wednesday evening, Tesla’s Head of AI, Ashok Elluswamy, said that the company would be releasing v14.1.2 to EAP members today, and that it would “debut a much-awaited feature.”

He followed that up with a racecar emoji and a smoke emoji, potentially hinting toward something speed-related. However, it could mean something totally different.

Some suggested it was potentially a new Speed Profile that could rank above the “Hurry” option, but that seems unnecessary. As far as other features that have been teased, one that definitely comes to mind is the “Banish” feature that was recently teased by CEO Elon Musk.

Banish is essentially the finishing touch to Tesla’s Actually Smart Summon (ASS), which launched earlier this year.

While ASS will bring your car to your location using the Tesla app on your phone, Banish does just the opposite by dropping you off at the door of your destination and finding a parking spot on its own.

Elon Musk teases ‘Banish’ feature to pair perfectly with Summon

This was recently teased by Musk yet again, as he said earlier this month that Full Self-Driving would be capable of it very soon.

Based on what we’ve seen out of v14.1 and v14.1.1, there is some potential that Banish could be released and could be the feature that Elluswamy is hinting toward, although there is no direct evidence of that.

Luckily, I was able to get into the EAP, so as the feature is released and the Release Notes are available, we’ll be able to report on exactly what feature is on the way.

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Tesla benefits from new incentive program that’s active after tax credit loss

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5 hours ago

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October 15, 2025

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(Credit: Tesla)

Tesla benefits from an incentive program in Texas that has become active following the loss of the $7,500 EV tax credit, which was a significant advantage for EV drivers.

In Texas, the State Commission on Environmental Quality has a grant program for light-duty motor vehicles that are either purchased or leased by consumers.

Referred to as the Light-Duty Motor Vehicle Purchase or Lease Incentive Program (LDPLIP), the program opened on October 13 and provides grants for consumers who want to buy new energy vehicles.

Will Tesla thrive without the EV tax credit? Five reasons why they might

The program allows for grants of up to $2,500 for electric or hydrogen fuel cell vehicles.

These are the eligibility criteria:

  • Individuals or entities who purchase or lease an eligible vehicle on or after September 1, 2025, and who apply for or acquire title and registration of the vehicle in Texas
  • Applicants must have taken possession of the vehicle before applying
  • Applicants must commit to operating and registering the vehicle in Texas for at least one year

Additionally, the car must:

  • Be included on the TCEQ Eligible Vehicle List
  • Be new and must not have been the subject of any prior retail sale or lease
  • Have a gross vehicle weight rating of 10,000 pounds or less

They are awarded on a first-come, first-served basis.

The good news is that Tesla’s entire vehicle lineup, as of October 7, qualifies. Here is what the LDPLIP’s list of qualifying vehicles shows for Tesla:

  • Tesla Cybertruck AWD
  • Tesla Cybertruck Beast
  • Tesla Model S AWD
  • Tesla Model S Plaid
  • Tesla Model X AWD
  • Tesla Model X Plaid
  • Tesla Model Y Long Range RWD
  • Tesla Model Y Long Range AWD
  • Tesla Model Y Performance
  • Tesla Model 3 Long Range RWD
  • Tesla Model 3 Long Range AWD
  • Tesla Model 3 Performance

This list was published during the day of October 7, which is coincidentally the same day Tesla launched its Tesla Model 3 ‘Standard’ and Tesla Model Y ‘Standard.’

We reached out to the program to confirm that these vehicles qualify for that grant, and we will update when we hear back.

With the loss of the Federal EV Tax Credit, local programs are still available to help with the cost of an EV. Although electric cars are affordable, there are benefits to choosing one, especially as these grant programs continue to become available.

The full list of vehicles that qualify for the grant is available here.

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