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SpaceX to build small version of BFR’s spaceship for use on Falcon 9, says Elon Musk

A view of spaceship (BFS) separating from BFR booster (BFB). (SpaceX)

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SpaceX CEO Elon Musk has taken to Twitter to announce a new development program: in order to gain experience with the new design and recovery strategy, SpaceX engineers and technicians will apparently build a miniature version of BFR’s winged spaceship able to launch atop Falcon 9 or Falcon Heavy.

According to Musk, the company aims to conduct the first orbital flight of this mini-BFS as early as June 2019, just eight months away.

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Described as a “SpaceX tech tree build”, Musk seems to be implying that the strategic purpose of this new development is to act as a stepping stone between Falcon 9 and BFR, two dramatically different launch vehicles relying on a variety of entirely distinct technologies. Based on the fact that Musk believes the mini-BFS could reach orbit as early as June 2019, it seems likely that the miniature spaceship will essentially just be a strengthened Falcon 9 upper stage with fins and a heat shield attached versus a more extreme departure, where the stage would literally be a mini-BFS.

In the latter scenario, SpaceX could use the opportunity to extensively test – albeit on a smaller scale – a number of immature BFR technologies, including all-composite propellant tanks, autogenous pressurization, a sea level-optimized rocket engine on an orbital upper stage, methane and oxygen (methalox) propellant, actuatable tripod fins, new heat shield materials, and more. If SpaceX has been working on this for several months, there is still a chance that those technologies will be tested on this step-change Falcon 9 S2 variant, but it seems improbable that Musk would have been able to stay totally silent on the plans during his September 2018 update to the BFR program.

Falcon 9 upper-stage recovery

Going off of what little information we have, it seems more likely that the “mini-BFR ship” described by Musk is an effort to realize Falcon 9 upper stage recovery and test BFR’s orbital spaceship recovery strategies than it is an extensive development platform for all critical BFR technologies. Prior to today’s tweet, Musk announced early this year (April, to be precise) that SpaceX would attempt to recovery Falcon 9’s upper stage with a “giant…balloon”, or an inflatable decelerator to use the technical terminology.

Given this new development, it’s unclear if those plans are still on – as a small spaceship, Falcon 9’s upper stage would likely be able to reenter Earth’s atmosphere without the need for something like a single-use inflatable decelerator, which would have always been a suboptimal crutch for the recovery of any orbital spacecraft, be it Falcon 9 or BFR. With this new plan, it appears that SpaceX wants to kill at least two birds with one stone, building a platform capable of flight-testing a handful of new technologies critical to BFR’s success while also potentially realizing the dream of a fully-reusable Falcon 9.

A gif of Raptor throttling over the course of a 90+ second static-fire test in McGregor, Texas. (SpaceX)

Given recent reports from Reuters that Musk has demanded that SpaceX’s Starlink team work towards the first launch of an operational batch of satellites by mid-2019, his target date for a mini-BFS Falcon 9 upper stage is likely no coincidence. Given the potential risk of being the first to launch on an unproven variant of Falcon 9, it’s possible (if not probable) that SpaceX will conduct its own launch of the rocket prior to flying paying customers – a perfect way to avoid wasting that launch would be risking a few of SpaceX’s own Starlink satellites in place of a customer’s payload.

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Musk seems to be confident that SpaceX has effectively ‘solved’ propulsive rocket landings, stating that the purpose of this new variant will be dedicated to testing an “ultra light heat shield and high Mach control surfaces”. Judging from a number of recent job postings focused on new thermal protection systems (and affixing them to composite structures) and an official request for information (RFI) from NASA Ames about its lightweight TUFROC heat shield material, this is a major focus and one of several critical paths for BFR development.


For prompt updates, on-the-ground perspectives, and unique glimpses of SpaceX’s rocket recovery fleet check out our brand new LaunchPad and LandingZone newsletters!

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

Musk company boycott proposal at City Council meeting gets weird and ironic

The City of Davis in California held a weekly city council meeting on Tuesday, where it voted on a proposal to ban Musk-operated companies. It got weird and ironic.

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Credit: Grok

A city council meeting in California that proposed banning the entry of new contracts with companies controlled by Elon Musk got weird and ironic on Tuesday night after councilmembers were forced to admit some of the entities would benefit the community.

The City of Davis in California held a weekly city council meeting on Tuesday, where it voted on a proposal called “Resolution Ending Engagement With Elon Musk-Controlled Companies and To Encourage CalPERS To Divest Stock In These Companies.”

The proposal claimed that Musk ” has used his influence and corporate platforms to promote political ideologies and activities that threaten democratic norms and institutions, including campaign finance activities that raise ethical and legal concerns.”

We reported on it on Tuesday before the meeting:

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California city weighs banning Elon Musk companies like Tesla and SpaceX

However, the meeting is now published online, and it truly got strange.

While it was supported by various members of the community, you could truly tell who was completely misinformed about the influence of Musk’s companies, their current status from an economic and competitive standpoint, and how much some of Musk’s companies’ projects benefit the community.

City Council Member Admits Starlink is Helpful

One City Council member was forced to admit that Starlink, the satellite internet project established by Musk’s SpaceX, was beneficial to the community because the emergency response system utilized it for EMS, Fire, and Police communications in the event of a power outage.

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After public comments were heard, councilmembers amended some of the language in the proposal to not include Starlink because of its benefits to public safety.

One community member even said, “There should be exceptions to the rule.”

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Community Members Report Out of Touch Mainstream Media Narratives

Many community members very obviously read big bold headlines about how horribly Tesla is performing in terms of electric vehicles. Many pointed to “labor intimidation” tactics being used at the company’s Fremont Factory, racial discrimination lawsuits, and Musk’s political involvement as clear-cut reasons why Davis should not consider his companies for future contracts.

However, it was interesting to hear some of them speak, very obviously out of touch with reality.

Musk has encouraged unions to propose organizing at the Fremont Factory, stating that many employees would not be on board because they are already treated very well. In 2022, he invited Union leaders to come to Fremont “at their convenience.”

The UAW never took the opportunity.

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Some have argued that Tesla prevented pro-union clothing at Fremont, which it did for safety reasons. An appeals court sided with Tesla, stating that the company had a right to enforce work uniforms to ensure employee safety.

Another community member said that Tesla was losing market share in the U.S. due to growing competition from legacy automakers.

“Plus, these existing auto companies have learned a lot from what Tesla has done,” she said. Interestingly, Ford, General Motors, and Stellantis have all pulled back from their EV ambitions significantly. All three took billions in financial hits.

One Resident Crosses a Line

One resident’s time at the podium included this:

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He was admonished by City Council member Bapu Vaitla, who said his actions were offensive. The two sparred verbally for a few seconds before their argument ended.

City Council Vote Result

Ultimately, the City of Davis chose to pass the motion, but they also amended it to exclude Starlink because of its emergency system benefits.

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Elon Musk

California city weighs banning Elon Musk companies like Tesla and SpaceX

A resolution draft titled, “Resolution Ending Engagement With Elon Musk-Controlled Companies and To Encourage CalPERS To Divest Stock In These Companies,” alleges that Musk “has engaged in business practices that are alleged to include violations of labor laws, environmental regulations, workplace safety standards, and regulatory noncompliance.”

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tesla supercharger
Credit: Tesla

A California City Council is planning to weigh whether it would adopt a resolution that would place a ban on its engagement with Elon Musk companies, like Tesla and SpaceX.

The City of Davis, California, will have its City Council weigh a new proposal that would adopt a resolution “to divest from companies owned and/or controlled by Elon Musk.”

This would include a divestment proposal to encourage CalPERS, the California Public Employees Retirement System, to divest from stock in any Musk company.

A resolution draft titled, “Resolution Ending Engagement With Elon Musk-Controlled Companies and To Encourage CalPERS To Divest Stock In These Companies,” alleges that Musk “has engaged in business practices that are alleged to include violations of labor laws, environmental regulations, workplace safety standards, and regulatory noncompliance.”

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It claims that Musk “has used his influence and corporate platforms to promote political ideologies and activities that threaten democratic norms and institutions, including campaign finance activities that raise ethical and legal concerns.”

If adopted, Davis would bar the city from entering into any new contracts or purchasing agreements with any company owned or controlled by Elon Musk. It also says it will not consider utilizing Tesla Robotaxis.

Hotel owner tears down Tesla chargers in frustration over Musk’s politics

A staff report on the proposal claims there is “no immediate budgetary impact.” However, a move like this would only impact its residents, especially with Tesla, as the Supercharger Network is open to all electric vehicle manufacturers. It is also extremely reliable and widespread.

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Regarding the divestment request to CalPERS, it would not be surprising to see the firm make the move. Although it voted against Musk’s compensation package last year, the firm has no issue continuing to make money off of Tesla’s performance on Wall Street.

The decision to avoid Musk companies will be considered this evening at the City Council meeting.

The report comes from Davis Vanguard.

It is no secret that Musk’s political involvement, especially during the most recent Presidential Election, ruffled some feathers. Other cities considered similar options, like the City of Baltimore, which “decided to go in another direction” after awarding Tesla a $5 million contract for a fleet of EVs for city employees.

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Starlink restrictions are hitting Russian battlefield comms: report

The restrictions have reportedly disrupted Moscow’s drone coordination and frontline communications.

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A truckload of Starlink dishes has arrived in Ukraine. (Credit: Mykhailo Fedorov/Twitter)

SpaceX’s decision to disable unauthorized Starlink terminals in Ukraine is now being felt on the battlefield, with Ukrainian commanders reporting that Russian troops have struggled to maintain assault operations without access to the satellite network. 

The restrictions have reportedly disrupted Moscow’s drone coordination and frontline communications.

Lt. Denis Yaroslavsky, who commands a special reconnaissance unit, stated that Russian assault activity noticeably declined for several days after the shutdown. “For three to four days after the shutdown, they really reduced the assault operations,” Yaroslavsky said.

Russian units had allegedly obtained Starlink terminals through black market channels and mounted them on drones and weapons systems, despite service terms prohibiting offensive military use. Once those terminals were blocked, commanders on the Ukrainian side reported improved battlefield ratios, as noted in a New York Post report.

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A Ukrainian unit commander stated that casualty imbalances widened after the cutoff. “On any given day, depending on your scale of analysis, my sector was already achieving 20:1 (casuality rate) before the shutdown, and we are an elite unit. Regular units have no problem going 5:1 or 8:1. With Starlink down, 13:1 (casualty rate) for a regular unit is easy,” the unit commander said.

The restrictions come as Russia faces heavy challenges across multiple fronts. A late January report from the Center for Strategic and International Studies estimated that more than 1.2 million Russian troops have been killed, wounded, or gone missing since February 2022.

The Washington-based Institute for the Study of War also noted that activity from Russia’s Rubikon drone unit declined after Feb. 1, suggesting communications constraints from Starlink’s restrictions may be limiting operations. “I’m sure the Russians have (alternative options), but it takes time to maximize their implementation and this (would take) at least four to six months,” Yaroslavsky noted. 

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