Connect with us
USAF photographer James Rainier's remote camera captured this spectacular view of Falcon Heavy Block 5 side boosters B1052 and B1053 returning to SpaceX Landing Zones 1 and 2. (USAF - James Rainier) USAF photographer James Rainier's remote camera captured this spectacular view of Falcon Heavy Block 5 side boosters B1052 and B1053 returning to SpaceX Landing Zones 1 and 2. (USAF - James Rainier)

News

SpaceX’s Elon Musk talks Starship heatshield, rocket landings on Joe Rogan podcast

Published

on

In a multi-hour February 2021 interview with Elon Musk himself, Joe Rogan inexplicably told the famous engineer and CEO that he had never seen a SpaceX rocket landing.

Of course, the 200+ minute conversation did produce a few minor tidbits of interesting information about SpaceX (and much more about Tesla projects), but Rogan’s statement that he’d never seen a SpaceX rocket landing before stole the limelight by a long shot.

SpaceX landed its first Falcon 9 booster – to an extraordinary amount of fanfare – in December 2015. In the five years since that breakthrough, SpaceX has successfully landed Falcon boosters 73 more times. A full 26 of those landings occurred in just the last 12 months. Falcon Heavy – responsible for spectacular, crowd-favorite performances – completed three dual-booster landings and one triple-booster landing between February 2018 and June 2019.

It’s not unimaginable that almost every single human on Earth with some level of access to the internet or social media is at least vaguely aware of or has watched videos of SpaceX landing rockets. To be clear, it is an unequivocal fact – including past comments on landings from Rogan himself – that Rogan has watched SpaceX land Falcon boosters at least once, if not several times. The only real takeaway, fellow readers, is that heavy, long-term drug use is inadvisable.

Cringeworthy moments aside, the interview did produce a select few minor details that weren’t explicitly known before. Most notably, Musk briefly discussed the challenge of developing a heat shield capable of safely returning orbital Starships back to Earth and revealed the main issue that SpaceX is currently working on.

Starship SN11 has an installation of more than 200 heat shield tiles, by far the most expansive deployment yet. (NASASpaceflight – bocachicagal)

Over the last six or so months, SpaceX has been gradually expanding small installations of heat shield tiles on Starship prototypes, ranging from vehicles that never left the ground to high-altitude Starships SN8 and SN9. Those tile installations have grown from a handful (4-8 on Starhopper in 2019) to literal hundreds on the most recent Starship completed by SpaceX.

During earlier ground testing and more recent hop tests with Starships SN5 and SN6, some of those ceramic composite tiles actually fell off or shattered, perhaps due to vibrations from Raptor engines or mechanical stress caused by Starship shrinking and contracting from thermal expansion. According to Musk, what SpaceX is trying to determine with those coupon-style tests is how to install a heat shield with tiles that are neither too close together or too far apart.

Advertisement

According to Musk, ceramic heat shield tiles placed too close together will ultimately shatter, break, or fall off when subjected to the stresses of Starship operations. Those stresses include the violent vibrations created by rocket propulsion supersonic to hypersonic travel, as well as airframe expansion and contraction that occurs when Starship’s steel hull is cyclically heated and cooled by Raptor burns and cryogenic propellant. In other words, assuming fragile, ceramic tiles are a necessity, they need to be placed far enough apart to avoid all of those possible pitfalls.

On the opposite hand, though, the entire point of Starship’s heat shield is to insulate it from extreme thermal stress during atmospheric reentry. If individual tiles are situated too far apart, superheated gas (plasma) produced during reentry will find its way between those tiles, heating up the structure they’re meant to keep cool. In the case of Starship, its steel hull is more than twice as resilient to reentry heating than comparable vehicles (like the Space Shuttle) with common aluminum frames, but a few millimeters of steel is still not enough to prevent weakening, damage, or outright burn-through in the face of orbital reentry.

In essence, SpaceX has to “get the gaps just right” – not too far apart to protect the airframe from plasma intrusion but not so close together that tiles impact or damage their neighbors as Starship cools and warms.

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

Investor's Corner

Michael Dell points out practical advantage of Elon Musk’s proposed pay package

As pointed out by the Dell Technologies CEO, Musk will only be rewarded if he delivers extraordinary value to shareholders

Published

on

Michael Dell points out practical advantage of Elon Musk’s proposed pay package

Michael Dell has weighed in on Elon Musk’s controversial 2025 CEO Performance Award, offering a grounded perspective amidst the noise surrounding the pay package today.

As pointed out by the Dell Technologies CEO, Musk will only be rewarded if he delivers extraordinary value to shareholders. Musk would quite literally receive no compensation if he fails to achieve his targets.

Dell emphasizes results over rhetoric

Dell shared his thoughts about Musk’s 2025 CEO Performance Award in a post on X.“Vote FOR Elon Musk. The award is only achieved IF he hits exceptionally ambitious market-cap and operational milestones—if he falls short, he gets nothing,” Dell wrote in his post. 

“If he succeeds, shareholders will win big through unprecedented value creation, and he will earn added voting rights to continue driving Tesla’s long-term vision.”

Musk replied with a short “Thanks Michael,” acknowledging Dell’s support. Dell’s framing cuts through the debate surrounding Musk’s compensation, as he simply focused on the incentive structure’s risk-reward balance.

Advertisement

Musk’s ambitious pay package

Elon Musk’s 2025 CEO Performance Award requires Tesla’s market capitalization to rise from roughly $1.1 trillion today to $8.5 trillion within a decade. This would make Tesla more valuable than any company in history.

Apart from this, Tesla’s operating profit must also grow from $17 billion to $400 billion annually. Musk must also lead the company to several product-related milestones, such as 20 million cumulative vehicle deliveries, 10 million Full Self-Driving subscriptions, 1 million Tesla Bots, and 1 million operating Robotaxis.

So far, proxy advisors Glass Lewis and ISS have urged shareholders to vote against the plan. Some prominent investors, including ARK Invest CEO Cathie Wood, however, have voiced strong support for the plan. Wood called Musk “the most productive human being on earth,” arguing that his vision and ability to attract talent are central to Tesla’s success.

Continue Reading

News

Starlink V3 satellites could enable SpaceX’s orbital computing plans: Musk

Musk’s remarks come as companies explore how orbital infrastructure could solve the Earth-bound energy and cooling challenges that come with hyperscale AI computing.

Published

on

spacex-starlink-constellation-global-demand
(Credit: SpaceX)

As artificial intelligence fuels surging demand for computing power, Elon Musk has hinted that SpaceX may use its Starlink V3 satellites to develop space-based data centers. 

Musk’s remarks come as companies explore how orbital infrastructure could solve the Earth-bound energy and cooling challenges that come with hyperscale AI computing.

SpaceX could lead the race to orbit-based computing

After Ars Technica published a report on autonomous space construction, Musk replied on X: “Simply scaling up Starlink V3 satellites, which have high speed laser links would work. SpaceX will be doing this.” 

SpaceX’s Starlink V3 platform is capable of up to 1 terabit per second (Tbps) throughput, so it could potentially form the foundation for orbital computing clusters powered by solar energy. 

Proponents have noted that such data centers could eliminate the massive land, water, and power footprints of traditional facilities on Earth. Critics, however, have question the economics and complexity of maintaining large-scale data systems in orbit.

Advertisement

Elon Musk, for his part, recently reiterated on X that this particular idea is a very big deal. 

SpaceX’s track record is substantial

Despite the reservations for such a radical idea, SpaceX’s track record is pretty much bulletproof at this point. The company’s Starlink network, once deemed as unrealistic by critics, now delivers broadband to millions worldwide while turning a profit. Its Falcon 9 rockets, which are capable of landing on land or on a drone in the middle of the ocean, are also among the world’s most reliable. 

With this track record in mind, it would seem that Elon Musk’s idea of using Starlink satellites as the building blocks for a space-based data center might not be too farfetched at all.

Interest in space-based data storage and processing has intensified in recent months, Ars noted. Former Google CEO Eric Schmidt reportedly acquired Relativity Space with an eye on orbital data infrastructure, while Jeff Bezos recently predicted gigawatt-scale data centers will operate in space within two decades.

Advertisement
Continue Reading

News

Tesla Model Y L gains V2L capabilities with software update

The 2025.32.300 update, which is rolling out to Model Y L vehicles in China, introduces several notable additions.

Published

on

Tesla has quietly added Vehicle-to-Load (V2L) functionality to the Model Y L through its latest over-the-air update in China, giving owners the ability to power external devices directly from their EVs.

The addition of the feature was highlighted by Tesla in its release notes for China’s 2025.32.300 update.

Model Y L gains V2L and other convenience upgrades

The 2025.32.300 update, which is rolling out to Model Y L vehicles in China, introduces several notable additions. First among them is an “external discharge function,” which enables V2L capability through an official adapter that Tesla plans to release later.

The feature should enable the Model Y L to power appliances, tools, or possibly even other EVs, making it extra useful for camping trips or the occasional power outages. 

Other improvements include a lower temperature limit for Dog Mode, customizable low-battery settings to conserve energy while parked, and expanded personalization for the vehicle’s “Rave Cave” entertainment feature. Tesla noted that certain functions may vary depending on vehicle configuration, and rollout timing could differ by region.

Advertisement

Model Y L is surging in China’s SUV rankings

Despite being new in the market, the Model Y L is already making some waves in  China’s top-selling mid-to-large SUVs lists. Data from Yiche showed that Tesla sold 8,221 units in September, securing fourth place in the segment behind the Leapmotor C16, Li Auto L6, and the Xiaomi YU7.

The Model Y L’s rapid ascent highlighted its strong market appeal despite a higher price point than most local competitors. Interestingly enough, the Xiaomi YU7, which is positioned closer to the standard Model Y with its five-seat configuration, topped the rankings with 22,244 units sold in September.

With Tesla’s continued free software upgrades, as well as its features like Full Self-Driving (Supervised), however, the Model Y L may have a chance at climbing China’s lists for the best-selling mid-to-large SUVs.

Continue Reading

Trending