China’s reusable house aircraft is circling Earth as soon as once more.
The Shenlong (“Divine Dragon”) spacecraft launched from Jiuquan Satellite tv for pc Launch Middle within the Gobi Desert on Feb. 6, kicking off the robotic car’s fourth-ever orbital mission.
We do not know for certain. The Chinese language authorities has revealed few particulars about Shenlong, whose three earlier flights to low Earth orbit (LEO) launched in September 2020, May 2023 and September 2024 and lasted two days, 276 days and 266 days, respectively.
The official line is imprecise and anodyne: Shenlong helps check applied sciences that “will pave the way in which for extra handy and reasonably priced round-trip strategies for the peaceable use of house sooner or later.”
That use case is just like the one the U.S. navy provides for its autonomous X-37B house aircraft, which Shenlong is assumed to broadly resemble. And secrecy is a shared trait: Most X-37B payloads and actions are labeled.
Analysts consider the House Drive owns two X-37B automobiles, every of which is 29 toes (8.8 meters) lengthy and appears like a miniature model of NASA’s previous house shuttle orbiters. The X-37B reached orbit for the primary time in 2010 and is presently flying its eighth mission, which launched final August atop a SpaceX Falcon 9 rocket.
Although navy officers have all the time insisted that the X-37B is merely a expertise testbed, the car has aroused suspicion in some quarters. Early in its flying days, for instance, China apparently seen it as an area weapon. However these fears are overblown, specialists say.
“So far, the X-37B has by no means approached or rendezvoused with some other recognized house object and usually orbits far under the overwhelming majority of operational satellites,” the nonprofit Safe World Basis (SWF) wrote in its X-37B fact sheet. (There was one exception to that low-orbit rule, as the very fact sheet notes: On the seventh X-37B flight, the car obtained greater than 24,000 miles, or 38,600 kilometers, from Earth on a extremely elliptical orbit.)
The X-37B would even be a poor supply system for space-to-ground weaponry, resulting from its small payload bay (in regards to the dimension of a pickup truck mattress) and restricted power-generating functionality.
“Hyperkinetic weapons dropped from the bay would should be geared up with thrusters able to performing a big deorbit burn, which is unlikely given the obtainable room,” the SWF truth sheet states.
“The X-37B itself reenters just like the house shuttle, touchdown at an estimated 200 mph (321 kph), which suggests it travels within the ambiance a lot slower than a nuclear reentry car on a ballistic arc or a hyperkinetic weapon,” the very fact sheet continues. “It thus would want to hold standard explosives to do any important harm. The X-37B after reentry could be a slow-moving, not-very-maneuverable glide bomb, simple prey for any air protection system alongside its path to the goal.”
Much of this same reasoning holds for Shenlong. It’s thought to be roughly the same size as the X-37B, for example, so we shouldn’t worry about it raining bombs on Earth. However, unlike the X-37B, Shenlong has rendezvoused with other objects in space.
On each of its three previous missions, the space plane released one or more objects into orbit. We learned this not from the Chinese government but rather from the U.S. military, private space situational awareness companies and amateur astronomers, who have tracked Shenlong and its activities.
“The satellite deployed during the first mission demonstrated transmission broadcast capabilities, and the satellite deployed during Shenlong’s second mission is thought to have displayed independent propulsive capabilities,” the SWF wrote in its Shenlong fact sheet. “Shenlong has performed quite a few shut maneuvers and seize/ docking operations with the deployed satellites.”
Certainly, such rendezvous and proximity operations (RPOs) — which we’ve got not seen from the X-37B — could also be a precedence of the Shenlong program, as they appear to be for Chinese language house officers total.
“I feel that tracks together with different issues that they are doing — you realize, conducting RPOs in LEO and GEO,” mentioned Victoria Samson, chief director of house safety and stability for the SWF. (“GEO” is geostationary orbit, which lies 22,236 miles, 35,876 km, above Earth.)
“It is a talent set that they are clearly curious about, as is Russia, as is america,” she advised House.com.
This curiosity will not be precisely shocking: Mastery of RPO tech would enable operators to refuel, refurbish, improve and deorbit their very own satellites — and, probably, examine and/or tamper with adversary spacecraft.
“It is virtually on the level now the place, if you wish to have house superiority, you want to have the ability to conduct RPOs,” Samson mentioned.
Shenlong’s orbital work due to this fact worries some experts, who cite its anti-satellite potential. It is powerful to understand how warranted such issues are, given the secrecy — an argument you would make in regards to the X-37B as properly.
Extra details about every program would go a great distance towards allaying a few of these fears, if certainly they’re unfounded, Samson mentioned.
“I feel just a little extra transparency would assist fill in a few of the blanks, as a result of in any other case, individuals have a tendency to simply think about the worst-case situation,” she mentioned.
