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SpaceX’s mystery “Optimus Prime” drone ship robot spotted testing ahead of BulgariaSat-1 mission
Just a little over three months ago, in mid March, fans of SpaceX caught their first full glimpses of a mysterious robot aboard the drone ship Of Course I Still Love You (OCISLY) while it was docked in Port Canaveral, Florida.
Rapidly deemed “Roomba” and later heard to be internally nicknamed “Optimus Prime”, it was approximately 50 feet (15 meters) across at its widest point and appeared to be extremely heavy due to the way it was handled on the side of the docks, as well as the presence of tracks rather than wheels. The SpaceX community quickly came to the conclusion that it was some sort of robotic tool for remotely securing Falcon 9 first stages following landings aboard SpaceX’s drone ship fleet, as first stages had a tendency to rather precariously slide about drone ships in high seas.
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- Optimus Prime roving around OCISLY on June 13th. (Brady Kenniston/NASAspaceflight.com)
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- Optimus Prime captured by helicopter while conducting tests in March earlier this year. (Source: Reddit /u/riddlerthc)
This speculation was proven correct during a press conference following the successful launch of SES-10 and SpaceX’s first successful reuse; the Roomba/Optimus Prime was indeed a measure to more rapidly and safely secure first stages after landing aboard drone ships. The primary reason for this robot existing is to better ensure the safety of those working aboard active drone ships. Removing the requirement for people to be aboard a barge with an unsecured 50,000 kilogram rocket that has a tendency to explode violently after falling over.
The hallowed remains of the Falcon 9 that successfully launched Jason-3 but was somewhat less successfully recovered. (NASAspaceflight)
It is currently unclear whether the robot is intended to be a precaution only used in high seas or a tool to be used for every autonomous spaceport drone ship recovery. But the fact that it was seen conducting tests aboard OCISLY just a day before SpaceX’s static fire test for the upcoming launch of BulgariaSat-1 indicates that the upcoming launch may be the robot’s first truly operational test. It is also possible that SpaceX may simply choose to recover the stage and bring it back to port before conducting tests with the robot and an actual Falcon 9 S1 aboard OCISLY, with this latter option forcing less reliance upon a currently unproven (but nevertheless rather simple) technology.
Aside from the morally prescient goal of removing safety hazards for the Falcon 9 recovery crew, the ability to remotely secure Falcon 9 first stages will also avoid the time consuming practice of welding the landing legs and hydraulic jacks to the deck of the barge. This will likely remove hours of cautious procedures designed to protect those working aboard the barge once a stage has landed. As previously discussed on Teslarati, the possibility of weekly launches occurring from Cape Canaveral later this winter or sometime in 2018 gives SpaceX significant motivation to increase the availability of OCISLY, its only East coast-based drone ship.
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A Falcon 9 S1 secured the old-fashioned way with leg shoes welded to the deck and hydraulic lifts to keep weight off the legs. (NASAspaceflight)
While the several days typically required to sail several hundred miles to the barges’ recovery destinations are not about to change, the ability to remotely secure recovered stages will both drastically improve the safety of the recovery crew and allow OCISLY to spend less time on station in the Atlantic, and thus more time back in port to offload its Falcon 9 payload and prepare for the next recovery.
For SpaceX’s goal of rapid reusability, every day and even every hour that can be removed from the process of launching, recovering, and relaunching is time that could theoretically be spent launching the payloads of paying customers, or launching SpaceX’s own payloads of revenue-producing broadband satellites and data-producing Red Dragons. As the saying goes, time is money.
News
Elon Musk makes a key Tesla Optimus detail official
“Since we are naming the singular, we will also name the plural, so Optimi it is,” Musk wrote on X.
Tesla CEO Elon Musk just made a key detail about Optimus official. In a post on X, the CEO clarified some key wording about Optimus, which should help the media and the public become more familiar with the humanoid robot.
Elon Musk makes Optimus’ plural term official
Elon Musk posted a number of Optimus-related posts on X this weekend. On Saturday, he stated that Optimus would be the Von Neumann probe, a machine that could eventually be capable of replicating itself. This capability, it seems, would be the key to Tesla achieving Elon Musk’s ambitious Optimus production targets.
Amidst the conversations about Optimus on X, a user of the social media platform asked the CEO what the plural term for the humanoid robot will be. As per Musk, Tesla will be setting the plural term for Optimus since the company also decided on the robot’s singular term. “Since we are naming the singular, we will also name the plural, so Optimi it is,” Musk wrote in his reply on X.
This makes it official. For media outlets such as Teslarati, numerous Optimus bots are now called Optimi. It rolls off the tongue pretty well, too.
Optimi will be a common sight worldwide
While Musk’s comment may seem pretty mundane to some, it is actually very important. Optimus is intended to be Tesla’s highest volume product, with the CEO estimating that the humanoid robot could eventually see annual production rates in the hundreds of millions, perhaps even more. Since Optimi will be a very common sight worldwide, it is good that people can now get used to terms describing the humanoid robot.
-->During the Tesla 2025 Annual Shareholder Meeting, Musk stated that the humanoid robot will see “the fastest production ramp of any product of any large complex manufactured product ever,” starting with a one-million-Optimi-per-year production line at the Fremont Factory. Giga Texas would get an even bigger Optimus production line, which should be capable of producing tens of millions of Optimi per year.
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Tesla is improving Giga Berlin’s free “Giga Train” service for employees
With this initiative, Tesla aims to boost the number of Gigafactory Berlin employees commuting by rail while keeping the shuttle free for all riders.
Tesla will expand its factory shuttle service in Germany beginning January 4, adding direct rail trips from Berlin Ostbahnhof to Giga Berlin-Brandenburg in Grünheide.
With this initiative, Tesla aims to boost the number of Gigafactory Berlin employees commuting by rail while keeping the shuttle free for all riders.
New shuttle route
As noted in a report from rbb24, the updated service, which will start January 4, will run between the Berlin Ostbahnhof East Station and the Erkner Station at the Gigafactory Berlin complex. Tesla stated that the timetable mirrors shift changes for the facility’s employees, and similar to before, the service will be completely free. The train will offer six direct trips per day as well.
“The service includes six daily trips, which also cover our shift times. The trains will run between Berlin Ostbahnhof (with a stop at Ostkreuz) and Erkner station to the Gigafactory,” Tesla Germany stated.
Even with construction continuing at Fangschleuse and Köpenick stations, the company said the route has been optimized to maintain a predictable 35-minute travel time. The update follows earlier phases of Tesla’s “Giga Train” program, which initially connected Erkner to the factory grounds before expanding to Berlin-Lichtenberg.
-->Tesla pushes for majority rail commuting
Tesla began production at Grünheide in March 2022, and the factory’s workforce has since grown to around 11,500 employees, with an estimated 60% commuting from Berlin. The facility produces the Model Y, Tesla’s best-selling vehicle, for both Germany and other territories.
The company has repeatedly emphasized its goal of having more than half its staff use public transportation rather than cars, positioning the shuttle as a key part of that initiative. In keeping with the factory’s sustainability focus, Tesla continues to allow even non-employees to ride the shuttle free of charge, making it a broader mobility option for the area.
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Tesla Model 3 and Model Y dominate China’s real-world efficiency tests
The Tesla Model 3 posted 20.8 kWh/100 km while the Model Y followed closely at 21.8 kWh/100 km.
Tesla’s Model 3 and Model Y once again led the field in a new real-world energy-consumption test conducted by China’s Autohome, outperforming numerous rival electric vehicles in controlled conditions.
The results, which placed both Teslas in the top two spots, prompted Xiaomi CEO Lei Jun to acknowledge Tesla’s efficiency advantage while noting that his company’s vehicles will continue refining its own models to close the gap.
Tesla secures top efficiency results
Autohome’s evaluation placed all vehicles under identical conditions, such as a full 375-kg load, cabin temperature fixed at 24°C on automatic climate control, and a steady cruising speed of 120 km/h. In this environment, the Tesla Model 3 posted 20.8 kWh/100 km while the Model Y followed closely at 21.8 kWh/100 km, as noted in a Sina News report.
These figures positioned Tesla’s vehicles firmly at the top of the ranking and highlighted their continued leadership in long-range efficiency. The test also highlighted how drivetrain optimization, software management, and aerodynamic profiles remain key differentiators in high-speed, cold-weather scenarios where many electric cars struggle to maintain low consumption.
Xiaomi’s Lei Jun pledges to continue learning from Tesla
Following the results, Xiaomi CEO Lei Jun noted that the Xiaomi SU7 actually performed well overall but naturally consumed more energy due to its larger C-segment footprint and higher specification. He reiterated that factors such as size and weight contributed to the difference in real-world consumption compared to Tesla. Still, the executive noted that Xiaomi will continue to learn from the veteran EV maker.
“The Xiaomi SU7’s energy consumption performance is also very good; you can take a closer look. The fact that its test results are weaker than Tesla’s is partly due to objective reasons: the Xiaomi SU7 is a C-segment car, larger and with higher specifications, making it heavier and naturally increasing energy consumption. Of course, we will continue to learn from Tesla and further optimize its energy consumption performance!” Lei Jun wrote in a post on Weibo.
-->Lei Jun has repeatedly described Tesla as the global benchmark for EV efficiency, previously stating that Xiaomi may require three to five years to match its leadership. He has also been very supportive of FSD, even testing the system in the United States.
Elon Musk makes a key Tesla Optimus detail official
Tesla is improving Giga Berlin’s free “Giga Train” service for employees
