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Stratolaunch sold to mystery buyer, raising hopes that world’s largest plane will fly again

Stratolaunch's Roc took flight for the first time ever on April 13th, 2019, and it's looking likely that the aircraft may finally have the opportunity to fly again. (Stratolaunch)

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6 years ago

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Stratolaunch Systems Corp. – a space launch venture created by the late Microsoft co-founder billionaire Paul Allen – debuted the world’s largest plane (nicknamed Roc) in April 2019, completing one flawless flight before reports of its indefinite grounding arose.

In June, parent holding company Vulcan Inc. – led by Allen’s sister after his death – planned to cease Stratolaunch’s operations in anticipation of a total liquidation – including the aircraft, intellectual property, and facilities – worth up to $400 million. However, the Roc may live to fly once again after an official October 11th announcement, in which Stratolaunch indicated that the company has “transitioned ownership and is continuing regular operations.”

Prior to the announcement, NASASpaceflight.com photographer Jack Beyer posted photos to twitter appearing to show new activity at Stratolaunch’s Mojave Air and Space Port hangar. The post garnered a response from Nicola Pecile – test pilot with Virgin Galactic – who stated that operations seem likely to resume “in a few weeks” citing that hiring notices were recently sent to members of the Society of Experimental Test Pilots (SETP).

Initially, Allen developed the company to launch air-to-orbit rockets from a carrier aircraft mid-flight. To say that Stratolaunch has experienced turbulence during development may be an understatement. Since its inception, conceptualization redesigns and failed partnerships with various rocket launch vehicle companies have plagued operational efforts.

In 2011 Stratolaunch partnered with Elon Musk’s SpaceX to develop a multi-stage launch vehicle named the Falcon 9 Air that would be dropped from a carrier aircraft. The Falcon 9 Air would have been capable of delivering payloads up to 6,100kg (13, 400lbs) to low Earth orbit (LEO) from flight altitudes of 30,000ft with the assist of 4 Merlin 1D engines – the same engines that now propel SpaceX’s Falcon 9 and Falcon Heavy boosters.

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In 2012 SpaceX and Stratolaunch amicably parted ways with SpaceX citing design alterations that no longer worked with their envisioned Falcon 9 Air launch vehicle.

A panorama of Roc prior to its inaugural flight on April 13th, 2019. (Stratolaunch)

Following the dissolution of the partnership with SpaceX, Stratolaunch partnered with Orbital Sciences Corp (Orbital ATK) – now a subsidiary of Northrop Grumman – to develop the Pegasus II which was ultimately shelved to pursue in-house developed launch vehicles. Following the death of Paul Allen in 2018 that plan was also abandoned as Allen’s sister, Jody Allen, set an exit plan for the company in early 2019 according to Reuters.

However, the recent buy out by a mystery purchaser has seemingly breathed new life into Stratolaunch as the Twitter announcement also mentioned that the company will now “bring the carrier aircraft test and operations program fully in-house.” What this means for the future of the Roc and any air-to-orbit launches remains unclear.

The Roc itself is comprised of twin fuselages connected by a reinforced center wing and features an incredible wingspan of 117m (385ft), 28 landing gear wheels, and six Pratt & Whitney PW4056 engines – as well as many other components – salvaged from donor Boeing 747-400s. It is both the largest and heaviest aircraft (excluding payload) to have ever flown.

With a nickname derived from a mythical bird so large it could carry an elephant in flight, it would have been a tragedy if the one-of-a-kind aircraft were to be scrapped, mothballed, or placed in a museum after just a single flight. With Hope Stratolaunch’s October 11th announcement, the future of the massive plane has thankfully stabilized in spite of significant uncertainty, and hope remains that Roc’s new owner(s) will find a way to continue flying the aircraft.

Check out Teslarati’s newsletters for prompt updates, on-the-ground perspectives, and unique glimpses of SpaceX’s rocket launch and recovery processes.

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Elon Musk

Tesla releases cryptic teaser for something massive and it’s coming this week

On Sunday morning, Tesla released a nine-second teaser video of what appears to be either a vehicle wheel, fan, or some sort of propeller, but there are no real clues as to what it could be exactly.

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22 minutes ago

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October 5, 2025

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Credit: Tesla

Tesla has released a cryptic teaser for something massive, and it will release details on it this week. With many different projects in the works, there is a lot of speculation going on about what it could potentially be, but we have a few ideas.

On Sunday morning, Tesla released a nine-second teaser video of what appears to be either a vehicle wheel, fan, or some sort of propeller, but there are no real clues as to what it could be exactly.

It then ends with “10/7,” meaning it will announce something on October 7, which is this Tuesday:

Given that Tesla has been working on a handful of pretty notable projects that are set for unveiling at the end of this year, and there are some clues that seem to point in their direction with this short teaser video.

There are two projects that come to mind almost immediately: the Tesla Roadster is one, and the “E41” or affordable model is the other. Here’s what we know about both:

Tesla Roadster Demo Event

Tesla said earlier this year that it would have a demo event for the Roadster to unveil some new technologies and show off what it has been working on over the past few years.

There have been a lot of crazy things in the works for the Roadster, including a SpaceX package that would use cold-gas thrusters for an insane 1.1-second 0-60 MPH acceleration rate. This package was also supposed to help it hover, something CEO Elon Musk has teased for the past few years.

The Roadster was ready for release earlier this year, but after Chief Designer Franz von Holzhausen and VP of Powertrain Lars Moravy showed Musk what they had come up with, he wanted more.

Moravy said on the Ride the Lightning podcast earlier this year:

“What we had come up with exceeded what we originally planned. So, Elon was like, ‘Wow, great. Let’s do more!'”

The Roadster event was coined as “the most epic demo,” and since it was planned for the end of 2025, it is totally feasible to believe this could be it.

Elon Musk teases Tesla’s “most epic demo” by end of year

Tesla ‘E41’ Affordable Model

Some believe the teaser could be the official launch of Tesla’s affordable model, which Musk said earlier this year is simply a stripped down Model Y.

There have been some sightings of this vehicle in the past few weeks, including one on Friday that showed the vehicle completely uncovered for the first time:

The launch of the affordable model makes sense, especially from a timing perspective. With the $7,500 EV tax credit officially coming to a close on September 30, many are wondering how Tesla will spark growth in its deliveries. A more affordable EV would be the perfect response, and it is something that Tesla has been working on for some time.

Other Potential Ideas

There are some pretty interesting ideas as to what the teaser could be apart from the Roadster or affordable model. Some believe it could be a cooling fan for a GPU cluster, which would make sense considering Tesla’s prowess in data.

Grok also made an interesting guess, stating it could be a propeller for a secret air taxi Tesla is developing. This seems sort of our of left field.

We do know Tesla hosted a handful of influencers at Gigafactory Texas this past week, so whatever the company showed them is likely what will be unveiled on Tuesday.

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Tesla Optimus is learning martial arts in new video teasing capabilities

For the past few months, Tesla has been refining its capabilities and making some serious progress on what Optimus is capable of. This morning, Musk released a new video showing Optimus learning Kung Fu, perhaps its most impressive feat yet.

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17 hours ago

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October 4, 2025

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Credit: Elon Musk | X

Tesla Optimus is learning martial arts, a new video released by CEO Elon Musk shows, a crazy development and advancement in the robotics project the company has been working on for a few years.

Optimus has been a major focus of Tesla for the past several years, especially as Musk has said he believes it will be the biggest product of all time and could be the biggest contributor to the company’s valuation.

For the past few months, Tesla has been refining its capabilities and making some serious progress on what Optimus is capable of. This morning, Musk released a new video showing Optimus learning Kung Fu, perhaps its most impressive feat yet:

The video shows Optimus working with a Kung Fu teacher, known as a Shifu, going through what appears to be some sort of routine of combinations. It’s quite impressive to see the fluidity of the movements and Optimus’s ability to keep up with Shifu.

Tesla has been “working hard” to scale Optimus production, Musk said last week, a project that has obviously confronted both AI and manufacturing teams with a variety of challenges.

The plan is to have an annual production run-rate of one million units by 2030, and there were plans to build 5,000 units this year.

Elon Musk gives update on Tesla Optimus progress

Musk still believes Optimus will make up roughly 80 percent of Tesla’s value. In January, he said it would be “overwhelmingly the value of the company.”

Tesla plans to launch the Gen 3 version of Optimus soon, and although a video of a new-look prototype was released by Marc Benioff, the CEO of Salesforce, the company’s frontman stated that this was not what the next-generation prototype would look like.

Elon Musk confirms Tesla has never shown Optimus V3 design yet

This video seems to show there is still significant progress being made on the Optimus project, and it will be perhaps one of the most impressive humanoid robots available to consumers in the coming years.

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Elon Musk

Tesla Full Self-Driving v14 gets new release date, Elon Musk details

“Last minute bug cropped up with V14. Released is pushed to Monday, but that gives us time to add a few more features.”

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1 day ago

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October 4, 2025

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Credit: Tesla

Tesla’s Full Self-Driving version 14 has gotten a new release date after new details from CEO Elon Musk opened up some new perspectives on the suite.

Originally slated for an “early wide release” of v14 this past week, then a launch of v14.1 and v14.2 this week and next week, respectively, delays arose after Tesla’s Autopilot team found some issues within the software.

Tesla FSD V14 set for early wide release next week: Elon Musk

Musk detailed on X this morning that a “last minute bug” appeared before release, which has now pushed FSD v14’s release back to this Monday:

Musk also said the delay would give Tesla the ability to “add a few more features,” which seems like an added advantage, although he did not provide any additional details on what these features could be.

In classic Musk fashion, he has teased the capabilities of this version of the FSD suite since it became public knowledge that Tesla was working on it. He said that it is the second most important update for the AI/Autopilot team since FSD v12.

V14 will have a parameter count that is ten times what previous iterations were, which should provide more accuracy and a more human-like operation.

Musk has said v14 “feels alive” and has used the word “sentient” to describe its performance. The goal with the new FSD rollouts is to eliminate as many interventions as possible, making it as close to human driving as possible.

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