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SpaceX’s third Falcon Heavy launch on track as custom booster aces static fire

Falcon Heavy center core B1057 was spotted in transport on April 16th and performed a static fire test ten days later. (codercotton & SpaceX)

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SpaceX has successfully completed a static fire of its newest Falcon Heavy center core, a sign that the most challenging hardware is firmly on track for a late-June launch target.

Currently penciled in for June 22nd, Falcon Heavy’s third launch is of great interest to both SpaceX and its customer, the US Air Force. Most of the two-dozen payloads manifested on the mission are admittedly unaffiliated with the US military. However, the rideshare – known as Space Test Program 2 (STP-2) – was acquired by the USAF for the branch to closely evaluate and certify SpaceX’s Falcon Heavy rocket for critical military launches. The potential upsides of a successful demonstration and evaluation are numerous for both entities and would likely trigger additional positive offshoots.

The Center Core experience

Beyond the general contractual aspects of STP-2, the mission is significant because it will use the third Falcon Heavy center core and second Block 5 variant to be built and launched by SpaceX. Of the technical issues that complicated and delayed SpaceX’s Falcon Heavy development, most can probably be traced back to the rocket’s center core, practically a clean-slate redesign relative to a ‘normal’ Falcon 9 booster.

Most of that work centered around the extreme mechanical loads the center core would have to survive when pulling or being pulled by Falcon Heavy’s two side boosters. Not only would the center core have to survive at least two times as much stress as a Falcon 9 booster, but that stress would be exerted in ways that Falcon 9 boosters simply weren’t meant to experience, let alone survive. After years of work, SpaceX arrived at a design that dumped almost all of that added complexity squarely on the center core and the center core alone. The side boosters would need to use nosecones instead of interstages and have custom attachment points installed on their octawebs and noses, but they would otherwise be unmodified Falcon 9 boosters.

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)
Falcon Heavy side boosters B1052 and B1053 land at Landing Zones 1 and 2 (LZ-1/LZ-2) after their launch debut and Falcon Heavy’s first commercial mission. (USAF – James Rainier)
Falcon Heavy center core B1055 lands aboard drone ship OCISLY around 10 minutes after launch. (SpaceX)

On top of that, SpaceX’s Falcon upper stage and payload fairing would require no major modifications to support Falcon Heavy missions. On the opposite hand, the center core would require extensive rework to safely survive the trials of launch, let alone do so in a fashion compatible with booster recovery and reuse. Per the landing photos above, it’s difficult to tell a Falcon Heavy center core apart from a normal Falcon 9 booster, but the small visible changes are just the tips of several icebergs. Aside from a slight indication that the center core’s aluminum alloy tank walls are significantly thicker (they are), center cores feature a variety of unique mechanisms on their octawebs and interstages. All are involved in the tasks of locking all three boosters together, transferring side booster thrust to the center core, and mechanically separating the side boosters from the center core a few minutes after launch.

Underneath those mechanistic protuberances are the structural optimizations needed for a center core to survive the ordeal of launch. In short, to solve for those new loads, SpaceX wound up building a new rocket. Designing and building a new rocket – especially one as complex as Falcon Heavy’s center core – is immensely challenging, expensive, and time-consuming, particularly for the first few built. Like most complex products, building the first two Falcon Heavy center cores was probably no different. To make things worse, boosters 1 and 2 were based on totally different versions of Falcon 9 (Block 3 vs. Block 5), requiring even more work to further redesign and requalify the modified rocket.

Falcon Heavy center core B1057 completed its McGregor, TX static fire on April 26th, 10 days after the same booster was spotted eastbound in Arizona. (SpaceX)

This is where the center core assigned to Falcon Heavy Flight 3 and pictured above comes into play. Built just a few months apart from B1055, the first finished Falcon Heavy Block 5 center core, the newest center core – likely B1057 – is also the first to be built with the same design and manufacturing processes used on its predecessor. In other words, SpaceX can at long last begin serial production of Falcon Heavy center cores, allowing its engineering, production, test, and launch staff to finally get far more accustomed to the unique hardware.

Given Falcon Heavy’s healthy and growing manifest of 5-6 launches, SpaceX will probably need to build several additional Block 5 center cores over the next several years, hopefully resulting in a more refined flow for production, testing, and refurbishment. B1057 will be an excellent candidate for the first reused Falcon Heavy center core thanks to STP-2’s lightweight nature and an extremely gentle landing trajectory. With respect to Flight 3’s schedule, Crew Dragon’s April 20th explosion means that Falcon Heavy will have Pad 39A all to itself for many months to come. Truly the epitome of bittersweet, no doubt, but it does improve the odds that Falcon Heavy’s June 22nd STP-2 launch target will hold.

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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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The Boring Company’s newest tunnel vehicle runs on Tesla parts and no one is driving it

The Boring Company’s new tunnel vehicle runs on Tesla Model 3 batteries and drive units.

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The Boring Company just introduced a new piece of hardware, and it runs on parts pulled straight from a Tesla showroom. Liner Truck 3, unveiled in a post from the tunneling company’s official X account, is an all electric vehicle built around Tesla Model 3 battery packs and drive units, purpose built to move concrete tunnel segments to the boring machine face without a single person underground.

The job itself is unglamorous but critical. Each precast segment run weighs more than 22,000 pounds, roughly the load of a full cement mixer, and Liner Truck 3 hauls that weight repeatedly between the surface staging area and wherever the Prufrock machine happens to be cutting.

The Boring Company said Liner Truck 3 is piloted remotely out of its Global Operations Control Center in Texas, extending the Zero-People-In-Tunnel approach the company has spent years building toward. An earlier version of a ZPIT liner truck was already tested at the company’s Bastrop, Texas research tunnels, and a factory tour released last month showed an employee flying a fully loaded liner truck with a PlayStation controller. Liner Truck 3 looks like the production version of that same idea, cleaned up and pushed into daily use.

The timing lines up with a company digging in more places than it ever has before. The Boring Company now has multiple Prufrock machines active or arriving in Nashville, where Music City Loop construction has been accelerating since February, and its Vegas Loop network keeps adding tunnel mileage on a near monthly basis. Every one of those projects depends on getting concrete segments to the cutting face fast enough to keep the boring machine from idling, which is exactly the bottleneck Liner Truck 3 is designed to remove.

It also reinforces something Tesla owners have watched happen gradually across Musk’s companies: passenger car hardware finding a second life in heavy equipment. Model 3 drive units already move people through the Vegas Loop, and now the same components are hauling concrete underground in Nashville and wherever The Boring Company digs next. Whether that kind of component reuse extends further into TBC’s equipment lineup, or into other Musk owned industrial hardware, is the next thing worth watching.

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Elon Musk and SpaceX shrugs off the trading day Wall Street feared most

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Rendering of Elon Musk overlooking a Starship fleet (Credit: Grok)

SpaceX stock did the opposite of what most of Wall Street expected this week, when the day designed to be its most dangerous turned into a rally, and the rally kept going.

Thursday marked the first major lockup expiration since SpaceX’s June IPO, making roughly 911.5 million insider held shares eligible to trade for the first time, more than doubling the company’s public float. Analysts and short sellers had spent weeks bracing for a flood of selling, especially after the stock fell 13 percent following its first earnings report as a public company on Tuesday. Instead, shares rose 6.1 percent Thursday to close at $114.92, and by Friday they were trading near $129, up more than another 12 percent on the day.

SpaceX shorts get warned by Musk ally, echoing Tesla’s early struggles

The setup made the outcome notable. Short interest had climbed to roughly 34 percent of the float heading into earnings, among the highest of any large cap stock, with about 95 percent of available shares to borrow already on loan. CEO Elon Musk warned short sellers twice in the weeks before the lockup, writing on X that “the survival probability of firms who maintain a significant short position in SpaceX over time is very low,” then following up on the morning of earnings with “I try to warn them, but they just double down.”

When the newly unlocked shares hit the market and the selloff never showed up, some of that short position appears to have started unwinding. TipRanks reported that options activity shifted toward bullish strategies like put selling and risk reversals following the rally, with roughly $600 million in options premium trading Thursday alone. Retail buyers also stepped in during the earnings dip, according to Vanda Research.

The fundamentals behind the stock have not changed much in a week. SpaceX’s revenue nearly doubled year over year to $7.8 billion, with Starlink subscribers doubling to 12 million and the company’s AI segment growing 247 percent. What spooked investors on Tuesday was the spending side. Capital expenditures jumped to more than $18 billion for the quarter, up from $2.8 billion a year earlier, with AI investment alone rising from $749 million to $15.8 billion. Wall Street remains split on whether that spending is building infrastructure SpaceX needs or outrunning what the business can currently support, a debate Teslarati has tracked since shares first came under pressure.

None of that resolves the bigger question hanging over the stock. Thursday’s release was only the first of nine staggered lockup tranches, with roughly $800 billion worth of additional shares scheduled to become eligible through October, and Musk’s own stake stays locked until next June. If this week is any indication, the market is treating that supply as something it can absorb rather than something to fear, at least for now.

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The Boring Company’s newest Vegas Station has a permit quietly waiting behind it

Sahara Las Vegas opened a new Vegas Loop station, joining an exclusive two resort transit club.

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Sahara Las Vegas opened a new Vegas Loop station Thursday, giving The Boring Company’s underground transit system its northernmost stop yet on the Strip. The station sits at Sahara’s Paradise Road entrance, on the southeast corner of Las Vegas Boulevard and Sahara Avenue, and connects riders to the Las Vegas Convention Center, other Strip resorts on the network and, eventually, Harry Reid International Airport.

The addition makes Sahara the second resort, after Fontainebleau opened its own station in January, to get a stop built at street level rather than tucked into the property itself. Sahara now joins Westgate as the only two Strip resorts offering both a Vegas Loop station and a stop on the Las Vegas Monorail, giving guests two separate ways to get around without leaving the property.

The Boring Company just doubled its tunneling power in Nashville

The bigger news buried in Thursday’s announcement is what comes next. Boring Company has already secured its first permit to tunnel north of Sahara Avenue, extending the network beyond where it currently ends, even though permits to push the Loop toward downtown Las Vegas still haven’t been granted. Crews are also working on a two mile dual tunnel line running from Westgate to a planned station at 4744 Paradise Road, just north of Tropicana Avenue, that Las Vegas Convention and Visitors Authority CEO Steve Hill has said the company hopes to open in time for November’s Las Vegas Grand Prix.

Ridership has grown alongside the buildout. The Loop moved roughly 82,000 passengers during CONEXPO in early March, a total the company highlighted on its own X account at the time, and the system has now carried more than 4 million passengers through 11 open stations since it began running in 2021. The airport connector tunnels, meant to give the Loop a direct link to Harry Reid, have slipped past their original first quarter target and remain under construction, with Boring Company director Mike Baier saying that a full opening is still a few months out.

For Sahara, the calculation is straightforward. Convention traffic drives a large share of Loop ridership, and a station at the property’s front door gives conventiongoers one more reason to book rooms on the Strip’s north end instead of closer to the convention center itself.

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