Connect with us

News

SpaceX just finished Starship’s 100th Raptor engine

SpaceX's Hawthorne rocket factory has completed the 100th full-scale Raptor engine. (SpaceX)

Published

on

SpaceX says its Hawthorne, California rocket factory and headquarters has completed the assembly of Starship and Super Heavy’s 100th Raptor engine.

SpaceX began developing Raptor behind the scenes as far back as 2012 and 2013, when a small team successfully tested a full-scale Raptor preburner – a small but important subcomponent – at NASA’s Stennis Space Center (SSC) facilities. Three years later, in September 2016, CEO Elon Musk revealed the first integrated static fire of a Raptor prototype – though it would later become clear that that prototype was a subscale engine about the same size as Falcon 9’s Merlin 1D.

After two and a half years of subscale testing that helped SpaceX refine startup and shutdown sequences and the general operation of what quickly became the world’s most thoroughly tested full-flow staged combustion engine, SpaceX graduated to full-scale testing. Designed to produce about twice the thrust (~200 tons/440,000 lbf) of its subscale predecessors, the first full-scale Raptor engine shipped to SpaceX’s McGregor, Texas test facilities and completed its first static fire days later on February 3rd, 2019.

Notably, the very first full-scale Raptor prototype (SN1) not only survived its first test but lived long enough to complete several more, ultimately reaching SpaceX’s minimum thrust target four days after its first static fire. A vibration issue would soon require several months of troubleshooting and iterative build-test-fail cycles but Raptor was ultimately ready to support its first brief Starhopper hop tests in July and August.

Approximately 15 months after Raptor’s first flight, Starship prototype SN8 successfully lifted off with three engines, one of which performed a near-flawless four-minute burn to apogee. Eventually, six months after SN8’s successful ascent but failed landing, Starship SN15 successfully landed, demonstrating Raptor’s ability to reignite mid-flight. Since SN15’s May 2021 success, SpaceX appears to have completed anywhere from 20 to 35+ new Raptors as part of a dramatic acceleration in production to meet the needs of at least two imminent orbital Starship test flights – both of which will need approximately 35 engines each.

Advertisement

Per its label, RB16 – now better known as the 100th Raptor engine overall – is the 16th Raptor Boost engine built by SpaceX. “Boost” refers to the particular variant – in this case, a Raptor engine specifically designed for an outer ring of 20 engines on each Super Heavy booster. Unlike Raptor Center (RC) engines, the outer ring of Raptor Boost engines are fixed in place against the rocket’s skirt and aren’t designed to vector their thrust (i.e. gimbal). According to Musk, all sea level-optimized Raptor engines will ultimately produce approximately 230 tons (~510,000 lbf) of thrust.

Relative to almost any other large-scale engine development program in the last half-century, Raptor’s 29-month 100-engine milestone is an extraordinary achievement. The closest comparable engine is Blue Origin’s BE-4, which is expected to produce up to ~240 tons (~540,000 lbf) of thrust, uses an efficient (albeit slightly less so) combustion cycle, and relies on the same methane and oxygen propellant. Full-scale BE-4 testing began 16 months before Raptor in October 2017 and Blue Origin has reportedly only built and tested nine prototypes in the almost four years since. According to Musk, as of May 2021, SpaceX is now building more than a dozen Raptors – including prototypes and flight engines – every month.

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.

Advertisement
Comments

Elon Musk

Tesla to launch in India in July with vehicles already arriving: report

Tesla is finally making serious moves toward launching in India, with showrooms opening in July, a report claims.

Published

on

Credit: Tesla

Tesla is finally bringing its business to India, a new report indicates, as the company is already shipping vehicles from China to the market where it has attempted to launch business for several years.

We first heard of Tesla planning to launch in India about a decade ago when CEO Elon Musk and Indian Prime Minister Narendra Modi met in California at the Fremont Factory in 2015.

Tesla-india-import-tax-incentive-investment

Over the years, the two have hinted that the automaker would eventually land in India, but issues with import duties have delayed Tesla’s attempts.

Now, there seems to be some serious movement in Tesla’s plans, as it has reportedly shipped the first batch of vehicles from China to India, according to Bloomberg. The outlet says these are Model Y Rear-Wheel-Drive configurations.

Tesla is also planning for other parts of the launch, like preparing for Supercharging, aftermarket parts and merchandise purchasing for vehicle owners and fans, and spare parts from various regions, including the United States, China, and the Netherlands.

The company and the Indian government must have come to some sort of agreement that was catalyzed by Musk and Modi’s meeting in February in the U.S.

It is a long time coming, and it now gives Tesla access to an incredibly vast market in India, where a very small percentage of 2024’s total automotive sales were comprised of electric vehicles.

Another interesting tidbit about the launch is that the vehicles will be coming from Gigafactory Shanghai and not Gigafactory Berlin as previously thought. Reports from other publications, like Reuters, indicated the German production facility was building vehicles for India early last year.

India has a very strict policy that favors domestic manufacturing, which is why the import duties were so high for foreign automakers looking to bring their product into the market. These duties were reduced from 110 percent to just 15 percent, as long as companies aim to invest in India and meet certain investment and sales targets.

Continue Reading

News

SpaceX and Elon Musk share insights on Starship Ship 36’s RUD

Starship Ship 36 experienced a Rapid Unscheduled Disassembly during a static fire attempt.

Published

on

Elon Musk and SpaceX provided an explanation for the Rapid Unscheduled Disassembly (RUD) of Starship Ship 36 on Wednesday. As per Musk, preliminary data suggests that a nitrogen composite overwrapped pressure vessel (COPV) in the vehicle’s payload bay failed below its proof pressure.

On Wednesday evening, Ship 36 experienced a RUD during a static fire attempt. Videos of the incident that were shared online showed Starship Ship 36 exploding into a massive fireball at its launchpad in Starbase, Texas. Images taken in the aftermath of the explosion showed significant damage to the plumbing in the area. The site’s pad structure was also destroyed.

Elon Musk shared some information immediately after the incident. In a response to a post from space enthusiast @Erdayastronaut, Musk stated that “Preliminary data suggests that a nitrogen COPV in the payload bay failed below its proof pressure.”

Musk also noted that, “If further investigation confirms that this is what happened, it is the first time ever for this design.”

SpaceX provided more insight into the incident in a post on its official website.

Advertisement

“After completing a single-engine static fire earlier this week, the vehicle was in the process of loading cryogenic propellant for a six-engine static fire when a sudden energetic event resulted in the complete loss of Starship and damage to the immediate area surrounding the stand.

“The explosion ignited several fires at the test site, which remains clear of personnel and will be assessed once it has been determined to be safe to approach. Individuals should not attempt to approach the area while safing operations continue,” SpaceX wrote in its post.

SpaceX highlighted that despite Starship Ship 36’s RUD, the incident will not result in any hazards to the surrounding communities in the Rio Grande Valley. And in a post on X, SpaceX also confirmed that everyone in the Starship team was safe and accounted for after Ship 36’s explosion.

While Ship 36’s RUD is a speed bump for the Starship program, SpaceX is a company that is known to grow stronger with every adversity. Thus, it would not be surprising if SpaceX implemented numerous improvements to Starship after this incident–improvements that would make the vehicle more reliable and safer than before.

Advertisement
Continue Reading

News

Tesla has started rolling out initial round of Robotaxi invites

Tesla is putting safety above all in its initial Robotaxi rollout.

Published

on

Credit: @BLKMDL3/X

Tesla has started rolling out an initial round of invites for its upcoming Robotaxi service in Austin, Texas.

Screenshots shared by several Tesla community members who received the invites provided a quick overview of the autonomous ride-hailing service.

As noted in a techAU report, the initial round of Robotaxi service invites has gone to longtime Tesla owners and active members of the EV community. These include owners such as @SawyerMerritt, @BLKMDL3, @WholeMarsBlog, @ItsKimJava, and @HerbertOng, all of whom shared screenshots of the invitation that Tesla has sent about the upcoming service.

You’re Invited to Early Access of Tesla Robotaxi!

The Future is Now! You’re invited to Early Access of Tesla’s Robotaxi service in Austin, TX!

Advertisement

As an Early Access rider, you can be among the first to use our new Robotaxi App and experience an autonomous ride within our geofenced area in Austin. Through this exclusive preview, you’ll have the opportunity to provide valuable feedback on our Robotaxi service.

Based on Tesla’s message, it appears that participation in the service would be strictly invite-only for now. Participants must also download Tesla’s dedicated Robotaxi App to hail a ride. Rides can also be requested and initiated to and from any location within a geofenced area of Austin.

The robotaxi service will be available from 6:00 AM to 12:00 AM, seven days a week, though these hours may change depending on factors such as inclement weather. Interestingly enough, Tesla is inviting the first participants of the Robotaxi program to share photos and videos of their experience with the service.

While the vehicles themselves are autonomous and would operate without human input, the Robotaxis would still be accompanied by a Tesla staff member to monitor the vehicle. This strategy suggests that Tesla is really putting safety above all in its initial Robotaxi rollout.

Advertisement
Continue Reading

Trending