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SpaceX uses robot dog to inspect Starship after first engine test in months

Starship S20's first engine test - not a static fire fire but still a show. (NASASpaceflight - bocachicagal)

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4 years ago

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SpaceX’s first orbital-class Starship prototype has survived the first of several expected Raptor tests, kicking off an engine test campaign that could mark a number of new milestones.

With just 20 minutes left in a seven-hour test window, Starship prototype S20 (Ship 20) appeared to either unsuccessfully attempt its first Raptor static fire test or complete its first intentional Raptor preburner test around 11:40 pm CDT (UTC-5) on Monday, October 18th. Rather than a violent jolt and roar kicking up a cloud of dust, Ship 20 came to life with a (relatively) gentle fireball that lasted for several seconds.

In pursuit of maximum efficiency, Starship’s Raptors require two separate closed-cycle gas generators known as preburners to – as the name suggests – turn its cryogenic (very cold) liquid oxygen and methane propellant into a hot gas mixture that the engine re-ignites to produce thrust. A preburner test, if that’s what Starship S20 completed on Monday night, thus involves activating only the first half of that equation, rapidly producing a giant cloud of flammable gas without actually igniting to produce meaningful thrust.

Preburner tests have become increasingly rare as SpaceX’s sea-level Raptor design matured over the course of tens of thousands of seconds of ground testing and, later, thousands of seconds of ground and flight testing on Starship prototypes. Starship S20 had two engines during its first test. One Raptor was the sea-level optimized variant SpaceX has built dozens of and fired for 30,000+ seconds on the ground. The other, however, was a vacuum-optimized Raptor with a much larger nozzle – the first of its kind to participate in any kind of test while installed on a Starship prototype.

It’s possible that Raptor Vacuum (RVac) engines have even more design tweaks outside of their larger expansion nozzles. Regardless, SpaceX has only built and tested around 10 RVac prototypes over the last year, making it a less mature engine than its sea-level cousins. That could explain why SpaceX appears to have chosen to perform a preburner test first instead of jumping straight into a wet dress rehearsal and static fire. That also means that October 18th’s test was likely the first time a Raptor Vacuum engine has (partially) ignited while installed on a Starship.

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This view from a LabPadre beach camera all but guarantees that RVac and RVac alone fired up its preburner as part of Ship 20’s first engine test.

The above view from a uniquely situated LabPadre camera all but guarantees that Starship S20’s first engine test was a Raptor Vacuum preburner test and doesn’t offer any strong evidence that it was a two-engine test. Ship 20 still has a number of crucial tests ahead of it before SpaceX can even begin to consider it (or its general design) qualified for flight. That includes multiple static fires, including the first side-by-side static fire of two Raptor variants (RVac and Raptor Center), the first simultaneous static fire of more than three engines, and the first Starship static fire with a full six engines installed.

Ship 20’s preburner test is SpaceX’s first Starbase Raptor test since the first Super Heavy booster static fire in mid-July, almost exactly three months ago.

One of at least two Starbase Spot robots – nicknamed Zeus – and his doghouse. (NASASpaceflight – bocachicagal)

With any luck, S20’s first preburner test has opened the door for an inaugural static fire of one or both installed engines later this week. However, during that preburner test, the giant fireball Raptor Vacuum emitted appeared to ignite several pieces of pad hardware. SpaceX took advantage of one of at least two Boston Dynamics Spot robots on-site to physically walk a camera up to the active pad and inspect several secondary fires. Ultimately, SpaceX appears to have successfully safed Starship with no damage to the vehicle itself, but odds are good that the sources of those secondary fires will need to be fixed and any pad damage repaired before Ship 20 proceeds into static fire testing. SpaceX has two more 5pm-12am test windows scheduled on October 19th and 20th.

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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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Elon Musk reveals Tesla’s next Robotaxi expansion in more ways than one

Tesla Robotaxi is growing in more ways than one. Tesla wants to expand and hopes to reach half the U.S. population by the end of the year.

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10 hours ago

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July 24, 2025

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Credit: Tesla

Tesla CEO Elon Musk revealed the company’s plans for its next expansion of the Robotaxi in terms of both the geofence in Austin and the platform overall, as it looks to move to new areas outside of Texas.

Tesla launched the Robotaxi platform last month on June 22, and has since expanded both the pool of users and the area that the driverless Model Y vehicles can travel within.

The first expansion of the geofence caught the attention of nearly everyone and became a huge headline as Tesla picked a very interesting shape for the new geofence, resembling male reproductive parts.

The next expansion will likely absolve this shape. Musk revealed last night that the new geofence will be “well in excess of what competitors are doing,” and it could happen “hopefully in a week or two.”

Musk’s full quote regarding the expansion of the geofence and the timing was:

“As some may have noted, we have already expanded our service area in Austin. It’s bigger and longer, and it’s going to get even bigger and longer. We are expecting to greatly increase the service area to well in excess of what competitors are doing, hopefully in a week or two.”

The expansion will not stop there, either. As Tesla has operated the Robotaxi platform in Austin for the past month, it has been working with regulators in other areas, like California, Arizona, Nevada, and Florida, to get the driverless ride-hailing system activated in more U.S. states.

Tesla confirmed that they are in talks with each of these states regarding the potential expansion of Robotaxi.

Musk added:

“As we get the approvals and prove out safety, we will be launching the autonomous ride-hailing across most of the country. I think we will probably have autonomous ride-hailing in probably half the population of the US by the end of the year.”

We know that Tesla and Musk have been prone to aggressive and sometimes outlandish timelines regarding self-driving technology specifically. Regulatory approvals could happen by the end of the year in several areas, and working on these large metros is the best way to reach half of the U.S. population.

Tesla said its expansion of the geofence in Austin is conservative and controlled due to its obsession with safety, even admitting at one point during the Earnings Call that they are being “paranoid.” Expanding the geofence is necessary, but Tesla realizes any significant mistake by Robotaxi could take it back to square one.

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Tesla warns customers of incentive strategy on EVs as tax credit nears end

If you’re thinking of buying a Tesla, the time to order is now, the company claimed.

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11 hours ago

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July 24, 2025

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(Credit: Tesla)

Tesla has warned customers about its incentive strategy for qualifying electric vehicles, as the days of both the $7,500 EV tax credit for new EVs and the $4,000 credit for used EVs are coming to a close.

Both tax credits, which impact some of the vehicles in the Tesla lineup, are set to be eliminated at the end of Q3. The phase out of these consumer credits was always in the plans of the Trump Administration, but now we’re in the final quarter of their existence.

As a result, EV companies are scrambling to see how they can reduce costs or make their vehicles more affordable for customers. The $7,500 will price many consumers out of many EVs on the market, and Tesla is not immune to that.

However, Tesla has made a significant push into Q3 deliveries, rolling out numerous incentives to customers, including 0% APR on select purchases, lease deals, free upgrades on certain inventory units, and more.

The extensive list of incentives on Tesla vehicles in the quarter will not get any longer, either. During last night’s Tesla Earnings Call for the second quarter of 2025, company executives stated that their intention for these incentives was to encourage customers to place orders early in the quarter.

Tesla will only be able to apply the $7,500 credit with deliveries that occur before the end of September. Even if an order is placed before then, delivery must be completed by September 31 to receive the tax credit.

CFO Vaibhav Taneja confirmed that the incentives for the quarter are already out and encouraged customers to place an order sooner rather than later:

“Given the abrupt change, we have a limited supply of vehicles in the US this quarter. As we are already within lead times to order parts for cars, we have rolled out all our planned incentives already and will start pairing them back as we start to sell. If you are in the US and looking to buy a car, let’s roll now as we may not be able to guarantee delivery for orders placed in the later part of August and beyond.”

The loss of the incentives will impact every EV maker in the United States. Tesla has a plan moving forward, and it said last night that its affordable models would be rolled out in Q4, as introducing these cars any earlier could have detrimental effects on Model 3 and Model Y sales.

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Tesla Model Y awarded Top Safety Pick+ from IIHS

The new Model Y continues to impress with this new award.

Published

13 hours ago

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July 24, 2025

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(Credit: Tesla)

The 2025 Tesla Model Y was one of two midsize luxury SUVs to receive the Top Safety Pick+ award from the Insurance Institute for Highway Safety (IIHS).

To qualify for the IIHS’s Top Safety Pick+ or even the lower-tier Top Safety Pick label, vehicles need good ratings in the small overlap front and side crash tests, an acceptable or good rating in the pedestrian front crash prevention evaluation, and acceptable or good ratings for headlights across all trim levels.

The difference between the two labels is that an “Acceptable” rating in the moderate overlap front test will get a car the Top Safety Pick rating, but a “Good” rating in this category will win the elusive Top Safety Pick+ category.

The 2025 Model Y, codenamed “Juniper” internally by Tesla, was released in the United States earlier this year and received the top rating across each of the categories, automatically qualifying it for the Top Safety Pick+ label:

Other vehicles in Tesla’s lineup have extraordinary marks in crash testing according to other agencies, like the National Highway Traffic Safety Administration (NHTSA), but there are reasons those cars are not on the IIHS lists.

In 2024, we reported that the IIHS had evaluated some Tesla vehicles for the necessary tests to achieve these marks. Joe Young of the agency told us that the Model 3, for example, was not featured on either the Top Safety Pick or Top Safety Pick+ lists because the vehicle had several missing tests.

Here’s why the Tesla Model 3 wasn’t an IIHS Top Safety Pick+, and why it could be soon

This is not to say those other Tesla vehicles would not perform well. The Cybertruck performed better than any pickup has ever in NHTSA crash testing assessments.

The Model Y is Tesla’s most popular vehicle and was the best-selling car in the world over the past two years. Tesla’s intense focus on safety continues to show that this priority goes into every decision the company makes regarding design and engineering. This focus has continued to pay dividends as some real-world crashes save the lives of those inside the cars.

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