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SpaceX CEO Elon Musk posts uncut Raptor, drone videos of Starhopper’s flight test debut
Some two hours after Starhopper’s inaugural untethered flight, SpaceX CEO Elon Musk took to Twitter to post an uncut video showing the ungainly rocket’s launch and landing from the perspective of both a drone and Starhopper’s lone Raptor engine.
As noted by commenters, Starhopper’s first flight also marks perhaps an even more fascinating milestone: it’s technically the first launch ever of a full-flow staged-combustion (FFSC) rocket engine. Whether or not the development hell Raptor required is or was worth it to SpaceX, the company has become the first and only entity on Earth to develop and fly a FFSC engine, beating out the national space agencies of both the United States and Soviet Union, both of which built – but never flew – prototypes.
Instead of inexplicably shelving a mature prototype development and test program, SpaceX iterated through several subscale Raptor prototypes, test-fired the engines for more than 1200 seconds total, used that data to design and build full-scale Raptors, and finally sped into a hardware-rich test campaign with six (soon to be seven) new engines. After SpaceX settled on a full-flow staged-combustion cycle and methane/oxygen (methalox) propellant, Raptor conducted its first full-scale tests all the way back in 2014, performing preburner flow and ignition tests at NASA’s Stennis Space Center.
Two years and many additional subcomponent tests later, SpaceX successfully performed the inaugural static fire test of its first completed subscale Raptor, a huge milestone for any rocket engine. In the 12 months following its first static fire (September 2016), SpaceX performed dozens of static fire tests with several subscale engines, putting the new propulsion system through >1200 seconds of combined testing.
A year after that, SpaceX was still testing subscale engines but the first full-scale Raptor engine was just a few months away from completing assembly in Hawthorne and heading to McGregor to kick off full-scale static fire testing. Indeed, four months after CEO Elon Musk’s September 2018 update, Raptor serial number 01 (SN01) shipped to Texas in late January and successfully ignited for the first time on February 3rd. SpaceX’s finalized full-scale Raptor engine is designed to produce more than 2000 kN (450,000 lbf, 200 tons) of thrust at full-throttle.
Since that inaugural ignition, SpaceX’s propulsion team – perhaps to their detriment, under orders from Musk – pushed SN01 and several of its successors to their limits as quickly as possible, resulting in severe, irreparable damage in several cases. On the other hand, the no-holds-barred, ‘hardware-rich’ (i.e. destructive) test program has allowed SpaceX to relatively quickly solve several major bugs that prevented the engine from passing longer test fires.
Raptor SN05 was originally expected to support Starhopper’s first flight(s) but had to be passed up after suffering damage in one of its final June 2019 acceptance tests. Raptor SN06 became the first engine – likely thanks to tweaks afforded by data gathered from its failed brethren – to pass all of those acceptance tests, leading to its eventual installation on Starhopper in early July.
Raptor’s impressive development culminated on July 25th with the engine’s first untethered flight while attached to Starhopper, a 9m-diameter (30 ft) low-fidelity prototype that is more or less a mobile test stand for the next-generation SpaceX engine. Raptor is now the only FFSC engine in history that has powered a flight-capable vehicle’s launch and landing, even if said flight featured an apogee of just 20-30 meters (65-100 ft).
“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.“
SpaceX delays Starhopper’s first flight a few days despite Raptor preburner test success
For more on what exactly makes full-flow staged-combustion engines uniquely capable and challenging to develop, the subject has been covered at length in past Teslarati articles.
According to Musk, the next major challenge facing Starhopper and (presumably) Raptor SN06 is far more ambitious 200-meter (650 ft) hop and flight test that could happen as soon as the first half of August.
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News
Starlink gets green light to launch internet services in Vietnam
Vietnam has given Starlink the green light. With mobile & aviation plans in the mix, SpaceX continues its push into Asia.
Starlink received the green light to launch its internet services in Vietnam.
The Vietnamese government noted SpaceX’s permission to launch Starlink services in the country is on a trial basis. Starlink’s trial period will last until the end of 2030. SpaceX has a subscriber limit of 600,000 within the trial period.
SpaceX can provide Starlink’s fixed and mobile internet service plans throughout Vietnam. It may also offer Starlink Aviation service plans.
According to Reuters, the Vietnamese government noted that there is no limit to foreign ownership of a service. It is uncertain if SpaceX has applied for a license to launch Starlink services in Vietnam.
Vietnam’s decision to permit Starlink services in the country differs from Italy’s decision to pause discussions regarding SpaceX’s internet service. According to Italy’s Defense Minister Guido Crosetto, discussions of a Starlink deal with SpaceX have “come to a standstill. Crosetto cites the controversy surrounding Elon Musk as the reason for the pause on a Starlink deal. Italy was discussing a potential $1.6 billion, 5-year Starlink contract with SpaceX.
SpaceX is also trying to launch Starlink in India. The aerospace company has already signed deals with two of India’s top telecom companies for Starlink services. However, Starlink is still waiting for regulatory approval.
While waiting for regulatory approvals and license processing, SpaceX continues to improve its Starlink services. Recently, news broke that the Elon Musk-led company has plans to launch a new Starlink dish with gigabit speeds.
News
Tesla UK celebrates momentous delivery milestone
Tesla just delivered its 250,000th EV in the UK, marking a major milestone! The lucky owners? A family of four who got a Model 3.
Tesla recently delivered its 250,000th electric vehicle (EV) in the United Kingdom (UK). The American EV maker delivered its 200,000th car in the UK on March 28, 2024.
The 250,00th Tesla vehicle delivered in the UK was handed over to the Cotters, a small family of four with two children. The Cotters received a Tesla Model 3, showing that it still has a place among families.
Tesla UK sales increased by over 20% in February, with almost 4,000 units sold. Last month, the Tesla Model 3 and Model Y ranked second and third, respectively, as the UK’s most popular cars. The Mini Cooper was the UK’s most popular car in February.
Tesla’s brand in the United Kingdom appears untainted by the recent controversy surrounding Musk, leading people in the United States to vandalize Tesla vehicles, stores, and Superchargers.
In the United States, the FBI has created a task force to squash Tesla attacks and end the acts of “domestic terrorism.” At least four people have been arrested related to Tesla attacks, one of which drove a car into a group of people protesting in front of a Tesla store. The other three allegedly threw Molotov cocktails at Tesla vehicles, stores, and Superchargers.
Wall Street analysts have acknowledged the adverse effect anti-Tesla sentiments could have on the company stock. However, the Tesla attacks have little to no impact on analysts’ recent Tesla target price estimates or predictions.
A few analysts have reduced their Tesla price targets as the first quarter ends. Wells Fargo’s Colin Langan cut Tesla’s price target to $130, while RBC slashed it to $320. However, some analysts maintained their price target, like Canaccord Genuity.
“Our estimate is informed by our opinion that some consumers are delaying vehicle purchases to access the new Model Y and 4Q24 earnings call commentary regarding Model Y-related factory retooling limiting production…We wonder whether purchase decision delays and production limitations are being misinterpreted as halted overall momentum for Tesla,” Canaccord analysts noted.
News
Here’s where Waymo is launching autonomous robotaxis next
Waymo has its sights set on three new U.S. cities in the months to come.
Google parent company Waymo has announced plans to bring its self-driving robotaxis to yet another U.S. city, adding to the list of those it plans to deploy the service to in the next several months.
On Tuesday, Waymo announced in a press release that it will be bringing its autonomous ride-hailing vehicles to Washington D.C. in 2026, after it recently announced plans to start deploying the services in Atlanta, Georgia, and Miami, Florida, sometime in 2025. The D.C. services will utilize the Waymo One app, unlike some of the cities which will roll out through a partnership agreement.
“Waymo One is making fully autonomous driving a reality for millions of people across the U.S.” said Tekedra Mawakana, Waymo Co-CEO. “We’re excited to bring the comfort, consistency, and safety of Waymo One to Washingtonians, those who work and play in the city every day, and the millions of people from around the world who travel to the District every year.”
The company says it plans to continue working closely with legislators on regulations needed to operate driverless vehicles in D.C. Additionally, Waymo says it’s currently operating over 200,000 fully autonomous, paid driverless ride-hails per week, as Tesla and others aim to enter the commercial robotaxi space in the coming months.
This video shows the strength of Tesla's vision-based approach.👀🤖
There are very few, if any, advanced driver-assist systems today that will be able to navigate a road like this without specific training.pic.twitter.com/sSAUhjYp7V
— TESLARATI (@Teslarati) March 5, 2025
Gonna be pretty tough to do the Waymo approach in a road like this.
— TESLARATI (@Teslarati) March 5, 2025
READ MORE ON WAYMO: Ex-Waymo CEO dismisses Tesla, Cybercab: ‘They’re a car company with a driver-assist system’
“I’ve experienced firsthand how safely the Waymo Driver operates around pedestrians, cyclists, and other vulnerable road users,” writes Jonathan Adkins, the CEO of the Governors Highway Safety Association. “Waymo has worked with GHSA and our first responder network as they’ve expanded their service, always putting safety first. As someone who walks to work almost every day, I’m excited to share the road with Waymo in Washington, D.C.”
Waymo also recently launched its robotaxi services will deploy in a partnership with Uber in Austin, Texas, where Tesla also has a so-called Gigafactory and plans to roll out its own robotaxi services later this year. The company currently operates paid driverless ride-hailing or early testing in the following cities, primarily in the U.S.:
- San Francisco, California
- Larger San Francisco Bay Area Metro, California
- Los Angeles, California
- Phoenix, Arizona
- Austin, Texas
- Miami, Florida (early pilot testing)
- Tokyo, Japan (early pilot testing)
The news also comes as Tesla aims to roll out its first unsupervised drives with its in-house Full Self-Driving (FSD) software this summer, along with rolling out initial robotaxi ride-hailing services. While the company doesn’t currently operate any paid ride-hailing like Waymo One, the company’s vehicles can generate real-time training data from drivers with FSD Supervised engaged.
Starlink gets green light to launch internet services in Vietnam
Tesla UK celebrates momentous delivery milestone
Here’s where Waymo is launching autonomous robotaxis next
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