SpaceX just aced a critical Air Force test of its Falcon Heavy rocket

On Tuesday afternoon—a little more than 12 hours after the launch of a Falcon Heavy rocket from Kennedy Space Center in Florida—the US Air Force’s Space & Missile Systems Center declared that all had gone well with the complicated mission. “All satellites are on orbit and have made contact,” the Air Force unit tweeted. SpaceX had a lot on its plate with Tuesday morning’s launch, which occurred at 2:30am ET (06:30 UTC). Once again, the company recovered the two side-mounted Falcon 9 first stage boosters at a landing site along the Florida coast. But for the second time out of three Falcon Heavy launches, SpaceX was unable to land the center core on a drone ship in the Atlantic Ocean.

This is perhaps understandable because, due to mission requirements, the center core used in Tuesday’s launch had to shed more energy than any previous launch—its attending drone ship was positioned more than 1,200km away from the launch site. More favorably for SpaceX, the company succeeded in catching one half of a payload fairing for the first time.

SpaceX did so with its rebranded Ms. Tree ship, which sports a large catcher’s mitt-like netting. “Ms. Tree caught the Falcon fairing!!” company founder Elon Musk shared on Twitter. For a few years, the company has been experimenting with various approaches to capturing the payload fairing halves, which split apart after a rocket reaches space to allow the payload access to space.

Each fairing half has some onboard capacity to control its descent through Earth’s atmosphere, and a complete payload fairing is valued at about $6 million. SpaceX has said it intends to fly “used” payload fairings on a Falcon 9 launch later this year. But for all of the progress SpaceX continues to make with reusable launch, the biggest news from Tuesday morning’s Falcon Heavy mission is that the Air Force has apparently come away satisfied with the performance of SpaceX and its heavy-lift rocket.

For its first payload to fly on the Falcon Heavy rocket, the armed service did not choose one of its ultra-expensive, classified satellites used for observation or military communications. Rather, it flew a rideshare mission that included 24 different satellites that entailed military, NASA, and NOAA-sponsored military and civil experiments. The Falcon Heavy rocket’s upper stage had to place the satellites into three different orbits, completing a complicated sequence of four Merlin vacuum engine firings over the course of three hours.

Additionally, the Falcon Heavy’s side-mounted boosters flying Tuesday were Falcon 9 rocket first stages that had each flown once before. In a previous life (April), they had been side boosters on the Falcon Heavy Arabsat-6A mission. Air Force officials said Tuesday’s launch (known as Space Test Program-2) would provide insight into the SpaceX booster recovery and refurbishing process, potentially allowing future National Security Space missions to fly on previously flown rockets.