hypersonic

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Varda’s drug-cooking Winnebago will be remembered as a space pioneer

Commercial space, Features, hypersonic, Science, Space, Utah, Varda / /
Varda's reentry capsule soon after landing at the Utah Test and Training Range.

Enlarge / Varda’s reentry capsule soon after landing at the Utah Test and Training Range.

Varda Space Industries is finally able to celebrate. For nearly eight months, the in-space manufacturing company’s first mission was essentially stranded in low-Earth orbit, but not because of any technical malfunction or a restriction imposed by the laws of physics.

Instead, the spacecraft couldn’t return to Earth until Varda and three government entities—the US military, the Federal Aviation Administration’s Office of Commercial Space Transportation, and the FAA’s Air Traffic Organization—all got on the same page. This was far more complicated than anyone envisioned, and Varda had to bypass landing opportunities in July and September because it couldn’t secure governmental approvals.

Finally, earlier this month, the FAA approved a commercial reentry license for Varda’s space capsule, which was somewhat larger than a mini-fridge, to fall back into the atmosphere and parachute to a landing in the remote Utah desert southwest of Salt Lake City. Varda’s landing zone was at the Utah Test and Training Range, a sprawling military facility primarily used for weapons testing.

Varda’s capsule landed in the Utah desert at around 4: 40 pm EST (2140 UTC) last Wednesday. Approaching from the north, the craft’s heat shield protected it from scorching temperatures during reentry. Then, the capsule deployed a 6.2-foot-diameter (2.1-meter) parachute to slow its velocity for a relatively gentle landing.

A recovery team went out to retrieve the nearly 200-pound capsule and connect it to a helicopter line for a short flight to a nearby processing facility, where engineers would prepare the spacecraft for transport back to Varda’s headquarters in El Segundo, California.

The mood at Varda following the successful landing was “as cheerful as it gets,” said Delian Asparouhov, who co-founded the company in 2020 with former SpaceX engineer Will Bruey and scientist Daniel Marshall.

“I always felt confidence in our team’s ability to accomplish this,” Asparouhov told Ars. “It was just a question of time.”

Waiting game

Varda achieved several firsts with this mission. The Utah Test and Training Range (UTTR) has some experience in supporting spacecraft landings, but this was the first time a commercial spacecraft landed at a military test range, adding another layer of regulatory and bureaucratic oversight. In September, NASA’s OSIRIS-REx mission deposited a cache of asteroid samples at UTTR.

Varda was the first company to secure a commercial FAA reentry license under streamlined commercial spaceflight regulations known as Part 450. This licensing paradigm is regularly used for commercial launches (there were 117 FAA-licensed launches last year), but this was the first time any company went through this process for a reentry.

Only two companies received commercial FAA reentry licenses before Varda—Lockheed Martin for a single test flight of the Orion spacecraft in 2014 and SpaceX for more than 40 commercial flights of its Dragon crew and cargo spacecraft. Both companies have operated under previous licensing regimes before the FAA introduced the revised Part 450 protocol in 2020.

The FAA’s commercial space office is responsible for licensing commercial launch and reentry operations, with a primary interest in ensuring that these activities don’t endanger the public. But FAA air traffic controllers had to find a time to clear a broad swath of airspace around the trajectory of Varda’s descending space capsule. The FAA’s temporary flight restriction for Varda’s reentry was unusually large, particularly for such a small spacecraft, stretching more than 400 miles (700 kilometers) long and 60 miles (100 kilometers) wide from southern Montana to western Utah.

The timing of Varda’s reentry, along with Varda’s access to the secure military facility, also had to be coordinated with the test range’s busy schedule of military exercises.

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SpaceX launches military satellites tuned to track hypersonic missiles

Commercial space, falcon 9, hypersonic, L3Harris, launch, missile defense, missile defense agency, Northrop Grumman, Science, Space, space development agency, spacex / /

Trackers —

These satellites will participate in joint missile tracking exercises later this year.

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SpaceX launched a Falcon 9 rocket Wednesday with six missile-tracking satellites for the US military.

Enlarge / SpaceX launched a Falcon 9 rocket Wednesday with six missile-tracking satellites for the US military.

Two prototype satellites for the Missile Defense Agency and four missile tracking satellites for the US Space Force rode a SpaceX Falcon 9 rocket into orbit Wednesday from Florida’s Space Coast.

These satellites are part of a new generation of spacecraft designed to track hypersonic missiles launched by China or Russia and perhaps emerging missile threats from Iran or North Korea, which are developing their own hypersonic weapons.

Hypersonic missiles are smaller and more maneuverable than conventional ballistic missiles, which the US military’s legacy missile defense satellites can detect when they launch. Infrared sensors on the military’s older-generation missile tracking satellites are tuned to pick out bright thermal signatures from missile exhaust.

The new threat paradigm

Hypersonic missiles represent a new challenge for the Space Force and the Missile Defense Agency (MDA). For one thing, ballistic missiles follow a predictable parabolic trajectory that takes them into space. Hypersonic missiles are smaller and comparatively dim, and they spend more time flying in Earth’s atmosphere. Their maneuverability makes them difficult to track.

A nearly 5-year-old military organization called the Space Development Agency (SDA) has launched 27 prototype satellites over the last year to prove the Pentagon’s concept for a constellation of hundreds of small, relatively low-cost spacecraft in low-Earth orbit. This new fleet of satellites, which the SDA calls the Proliferated Warfighter Space Architecture (PWSA), will eventually number hundreds of spacecraft to track missiles and relay data about their flight paths down to the ground. The tracking data will provide an early warning to those targeted by hypersonic missiles and help generate a firing solution for interceptors to shoot them down.

The SDA constellation combines conventional tactical radio links, laser inter-satellite communications, and wide-view infrared sensors. The agency, now part of the Space Force, plans to launch successive generations, or tranches, of small satellites, each introducing new technology. The SDA’s approach relies on commercially available spacecraft and sensor technology and will be more resilient to attack from an adversary than the military’s conventional space assets. Those legacy military satellites often cost hundreds of millions or billions of dollars apiece, with architectures that rely on small numbers of large satellites that might appear like a sitting duck to an adversary determined to inflict damage.

Four of the small SDA satellites and two larger spacecraft for the Missile Defense Agency were aboard a SpaceX Falcon 9 rocket when it lifted off from Cape Canaveral Space Force Station at 5: 30 pm EST (2230 UTC) Wednesday.

The rocket headed northeast from Cape Canaveral to place the six payloads into low-Earth orbit. Officials from the Space Force declared the launch a success later Wednesday evening.

The SDA’s four tracking satellites, built by L3Harris, are the last spacecraft the agency will launch in its prototype constellation, called Tranche 0. Beginning later this year, the SDA plans to kick off a rapid-fire launch campaign with SpaceX and United Launch Alliance to quickly build out its operational Tranche 1 constellation, with launches set to occur at one-month intervals to deploy approximately 150 satellites. Then, there will be a Tranche 2 constellation with more advanced sensor technologies.

The primary payloads aboard Wednesday’s launch were for the MDA. These two Hypersonic and Ballistic Tracking Space Sensor (HBTSS) satellites, one supplied by L3Harris and the other by Northrop Grumman, will demonstrate medium field-of-view sensors. Those sensors can’t cover as much territory as the SDA satellites but will provide more sensitive and detailed missile tracking data.

This illustration shows how the HBTSS satellites can track hypersonic missiles as they glide and maneuver through the atmosphere, evading detection by conventional missile tracking spacecraft, such as the Space Force's DSP and SBIRS satellites.

This illustration shows how the HBTSS satellites can track hypersonic missiles as they glide and maneuver through the atmosphere, evading detection by conventional missile tracking spacecraft, such as the Space Force’s DSP and SBIRS satellites.

“Our advanced satellites on orbit will bring the integrated and resilient missile warning and defense capabilities the US requires against adversaries developing more advanced maneuverable missiles,” said Christopher Kubasik, chairman and CEO of L3Harris. “L3Harris delivered this advanced missile tracking capability on behalf of MDA and SDA on orbit in just over three years after work was authorized to proceed. We are proud to be a critical part of the new space sensing architecture.”

The HBTSS satellites, valued at more than $300 million, and the SDA’s tracking prototypes will participate in joint military exercises in the coming months, where the wide-view SDA satellites will provide “cueing data” to the MDA’s HBTSS spacecraft. The narrower field of view of the HBTSS satellites can provide more specific, target-quality data to a ground-based interceptor, according to a report last year published by the Congressional Research Service. Future tranches, or generations, of SDA satellites will incorporate the medium field-of-view sensing capability flying on the MDA’s HBTSS satellites.

With SDA taking over the responsibility for making this technology operational, that will leave the MDA, which has historically flown its own missile tracking satellites, focused on next-generation sensor development, an MDA spokesperson told Ars.

Military officials decided only last year to place the four SDA satellites on the same launch as the MDA’s HBTSS mission. With all six satellites flying in the same orbital plane, there will be opportunities to see the same targets with both types of spacecraft and sensors. These targets may include scheduled US military missile tests or foreign launches.

“The intent to be able to work with cooperative and noncooperative targets to be able to do our demonstrations,” a senior SDA official said during a background briefing.

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