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SpaceX fully installs Super Heavy booster’s ‘aerocovers’

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For the first time, SpaceX has more or less installed a full set of ‘aerocovers’ on a Super Heavy booster prototype.

Designed to protect the booster from both itself and Earth’s atmosphere during ground testing, liftoff, ascent, and reentry, Super Heavy’s the structures amount to thin, steel shells mounted on metal box frames. The most obvious aerocovers slot over the top of six racks of equipment installed on the outside of Super Heavy’s aft end, giving the booster a sort of utility belt of hydraulic systems, pressure vessels, avionics, and heat exchangers. Unsurprisingly, those racks are festooned with electronics, composites, and thousands of feet of wiring and thin plumbing – none of which are particularly suited to sit a few dozen feet from the fury of 29-33 Raptor engines or near the leading edge of a hypersonic reentry vehicle.

Aside from the steel they’re mounted on, it’s likely that every system located on Super Heavy’s ‘utility built’ would begin malfunctioning or be destroyed outright if directly exposed to just a few seconds of the hypersonic buffeting and heating Starship boosters will experience during reentry. Unlike Falcon boosters, which almost always use reentry burns to slow down and create a sort of heat shield with their own exhaust, SpaceX is theoretically designing Super Heavy to survive the full force of reentry without an extra burn to cushion the blow.

To survive reentry and still land in good enough condition to enable anything close to same-day reusability, which is SpaceX’s goal, every ounce of at-risk equipment installed on Super Heavy’s exterior will likely need to be carefully shielded. In theory, that’s the purpose of the aerocovers SpaceX has only just begun to fully install – let alone test – on Super Heavy B4.

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December 11th, 2021.
January 14th, 2022.

Before Booster 4’s most recent installation on the orbital launch mount, SpaceX did install covers over a pair of hydraulic and heat exchanger racks but left all four composite overwrapped pressure vessel (COPV) racks and an umbilical port uncovered. After B4 was removed from the launch mount for the third time on December 30th, both covers were uninstalled. On January 14th, 2022, though, SpaceX rapidly installed all six covers for the first time and began sealing each cover’s exposed corners. On January 17th, SpaceX even installed aerodynamic surfaces around Booster 4’s protruding umbilical port, smoothing out any hypothetical airflow around the device.

Prior to main aerocover installation, SpaceX also added at least half a dozen small boxes seemingly designed to protect a number of thin metal probes that pierce through Super Heavy’s tanks and skin and are connected to avionics boxes. Additionally, while less visible, teams also worked to finish Super Heavy B4’s Raptor heat shielding with a large number of similar sheet steel covers and panels. Without official photos from SpaceX or another lift onto the launch mount, it’s impossible to know if Booster 4’s Raptor heat shield is fully closed out, but the shielding that runs around its circumference appears to be finished.

Super Heavy B4’s Raptor heat shielding is partially visible in these views. (SpaceX)

As it stands, Super Heavy B4 is likely just a few parts shy of true completion and is about as ready as it’ll ever be for static fire testing. More likely than not, those aerocovers and Raptor heat shields are essential for Super Heavy B4 to be able to perform more than one test at a time without immediately requiring major repairs. Unlike Starship, which has mostly tested three engines at once and only performed a few six-engine static fires, Super Heavy B4 may eventually test all 29 Raptor engines simultaneously.

When almost 30 engines are involved, even nominal preburner testing will likely produce a massive fireball that could engulf Super Heavy’s aft (if not the entire booster) with flames. For static fire testing, Raptors typically produce a smaller and briefer (but still substantial) fireball during shutdown, creating another potential source of damage to any sensitive hardware located anywhere on or in Booster 4’s thrust section. As such, Super Heavy aerocovers may be just as important for surviving static fires as they’ll be for surviving launches and landings.

It’s unclear if or when Super Heavy B4 will return to the orbital launch mount for wet dress rehearsal and static fire testing. SpaceX has ambiguous test windows scheduled from 10am to 10pm on January 18th, 19th, and 20th.

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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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Starlink gets its latest airline adoptee for stable and reliable internet access

The company said it plans to “rapidly integrate Starlink into its fleet,” and that the first Starlink-equipped aircraft will enter service this Summer.

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Credit: Southwest Airlines

SpaceX’s Starlink, the satellite internet program launched by Elon Musk’s company, has gotten its latest airline adoptee, offering stable and reliable internet to passengers.

Southwest Airlines announced on Wednesday that it would enable Starlink on its aircraft, a new strategy that will expand to more than 300 planes by the end of the year.

The company said it plans to “rapidly integrate Starlink into its fleet,” and that the first Starlink-equipped aircraft will enter service this Summer.

Tony Roach, Executive Vice President, Chief Customer and Brand Officer for the airline, said:

“Free WiFi has been a huge hit with our Rapid Rewards Members, and we know our Customers expect seamless connectivity across all their devices when they travel. Starlink delivers that at-home experience in the air, giving Customers the ability to stream their favorite shows from any platform, watch live sports, download music, play games, work, and connect with loved ones from takeoff to landing.”

Southwest also said that this is just one of the latest upgrades it is making to provide a more well-rounded experience to its aircraft. In addition to Starlink, it is updating cabin designs, offering more legroom, and installing in-seat power to all passengers.

Southwest became one of several airlines to cross over to Starlink, as reviews for the internet provider have raved about reliability and speed. Over the past year, Hawaiian Airlines, United Airlines, Alaska Airlines, airBaltic, Air France, JSX, Emirates, British Airways, and others have all decided to install Starlink on their planes.

This has been a major move away from unpredictable and commonly unreliable WiFi offerings on planes. Starlink has been more reliable and has provided more stable connections for those using their travel time for leisure or business.

Jason Fritch, VP of Starlink Enterprise Sales at SpaceX, said:

“We’re thrilled to deliver a connectivity experience to Southwest Airlines and its Customers that really is similar, if not better, than what you can experience in your own home. Starlink is the future of connected travel, making every journey faster, smoother, and infinitely more enjoyable.”

Starlink recently crossed a massive milestone of over 10 million subscribers.

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Elon Musk tops Forbes’ list of America’s 250 greatest innovators

The ranking places Musk at the top of modern American innovation.

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Gage Skidmore, CC BY-SA 4.0 , via Wikimedia Commons

Elon Musk has been ranked No. 1 on Forbes’ inaugural list of America’s 250 Greatest Innovators. The ranking places Musk at the top of modern American innovation as the publication kicks off a series celebrating the nation’s 250th anniversary.

Forbes described innovation as “the grease in the economic engine” and the force that transforms industries and creates new ones. The publication highlighted that its honorees are not just inventors, but business leaders who successfully bring breakthroughs to market.

Musk, 54, was ranked No. 1 in this year’s list. Forbes noted that he is “the only person in history to have founded (or grown from nearly nothing) five companies, each with multibillion-dollar valuations, each in a different industry.” Those companies include Tesla, SpaceX, Neuralink, xAI, and The Boring Company.

Forbes’ methodology began with nearly 1,000 nominees submitted by its reporters. A panel of judges, including venture capitalist Jim Breyer, journalist Kara Swisher, and strategy expert Rita McGrath, ranked candidates based on creativity, breadth, engagement, disruption, and commercial impact. Artificial intelligence tools, including ChatGPT and Gemini, were also used to assess candidates before editors finalized the rankings.

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The publication noted that more than one-third of the list consists of women and people of color, reflecting shifts in innovation and entrepreneurship over time. All individuals listed are also American citizens, though many were born abroad, including Musk himself. Musk was born in Pretoria, South Africa.

Ranked No. 2 is Jeff Bezos, 61, who Forbes credited with upending America’s $7.4 trillion retail industry through Amazon before pioneering cloud computing with Amazon Web Services. The publication highlighted that Bezos now focuses on space exploration through Blue Origin and artificial intelligence manufacturing systems at Prometheus.

At No. 3 is Bill Gates, 70, who helped launch the personal computing revolution and built Microsoft into the dominant force in workplace software. Forbes also highlighted Gates’ reinvention at age 50 as a data-driven philanthropist, including his role in helping eradicate polio from India.

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SpaceX secures win as US labor board drops oversight case

The NLRB confirmed that it no longer has jurisdiction over SpaceX.

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Credit: SpaceX

SpaceX scored a legal victory after the National Labor Relations Board (NLRB) decided to dismiss a case which accused the company of terminating engineers who were involved in an open letter against founder Elon Musk. 

The NLRB confirmed that it no longer has jurisdiction over SpaceX. The update was initially shared by Bloomberg News, which cited a letter about the matter it reportedly reviewed.

In a letter to the former employees’ lawyers, the labor board stated that the affected employees were under the jurisdiction of the National Mediation Board (NMB), not the NLRB. As a result, the labor board stated that it was dismissing the case.

As per Danielle Pierce, a regional director of the agency, “the National Labor Relations Board lacks jurisdiction over the Employer and, therefore, I am dismissing your charge.”

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The NMB typically oversees airlines and railroads. The NLRB, on the other hand, covers most private-sector employers, as well as manufacturers such as Boeing. 

The former SpaceX engineers have argued that the private space company did not belong under the NMB’s jurisdiction because SpaceX only offers services to “hand-picked customers.” 

In an opinion, however, the NMB stated that SpaceX was under its jurisdiction because “space transport includes air travel” to get to outer space. The mediation board also noted that anyone can contact SpaceX to secure its services.

SpaceX had previously challenged the NLRB’s authority in court, arguing that the agency’s structure was unconstitutional. Jennifer Abruzzo, the NLRB general counsel under former United States President Joe Biden, rejected SpaceX’s claims. Following Abruzzo’s termination under the Trump administration, however, SpaceX asked the labor board to reconsider its arguments. 

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SpaceX is not the only company that has challenged the constitutionality of the NLRB. Since SpaceX filed its legal challenge against the agency in 2024, other high-profile companies have followed suit. These include Amazon, which has filed similar cases that are now pending.

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