Europe has been working for some time on a spacecraft called Space Rider designed to be reused. The European Space Agency (ESA) performed a drop test back on October 6 intended to test out its parachute system, and it failed. Badly.
The incident occurred during an Oct. 6 drop test of the full-scale Space Rider model, from the European Space Agency (ESA). The robotic vehicle's initial drogue parachute deployed successfully, but its main parafoil detached during deployment, leaving the prototype unable to slow its descent before crashing into the ground, according to ESA officials. The cause of the failure remains under investigation.
"Following several successful tests using representative vehicle masses, the latest system-level drop test in October was not completed as planned due to an anomaly during the parafoil deployment sequence," an ESA spokesperson confirmed in an email to Space.com. "An independent investigation is ongoing to determine its root cause and inform the next steps."
Render of ESA's Space Rider orbiter. (Image credit: European Space Agency)
Space Rider isn't intended as vehicle that takes a crew to a space station (ISS or another). It's designed to carry scientific experiments to orbit for up to two months, then return them to Earth for analysis. Its method of return, though, differs from that of any other spacecraft in use today. Space Rider's wingless, lifting-body design relies on a steerable parachute, or parafoil, to maneuver toward its landing area. This allows it to perform runway-style touchdowns, as opposed to the less accurate parachute-based systems in current use. The higher accuracy, in turn, allows heavier lift vehicles to recover the payloads, rather than picking up a capsule in a desert - like the picture of the capsule that returned the samples of asteroid Bennu in this post. The lifting body design is similar to something like the Dream Chaser or even the Space Shuttles, but neither of those systems had a lifting body-shaped parachute.
According to Géraldine Naja, ESA's director of space transportation, the failure of the steerable parachute doesn't halt the program.
"We hope that this test will not damage, or let's say lead us to modify, the remaining schedule and qualification activities," Naja said during an ESA Council media briefing on Oct. 22. "In any case, the remaining qualification activities are not on the critical path of the development of the Space Rider."
Naja described the incident as an unfortunate but important event. "We have had many successful tests before, but testing and validation is part of the development of a space system," she said.
The test vehicle that was destroyed was a full-sized model, referred to as being "minivan-sized" for a mental picture, reproduced the size and flight characteristics of its reentry module, with avionics to control its autonomous guidance and navigation systems, but the vehicle was far from a space-ready article.
The Oct. 6 test took place at a military range on the Italian island of Sardinia, where the mockup was released from a helicopter at an altitude of approximately 2 miles (3 kilometers). According to Naja, the vehicle's initial drogue parachute triggered as expected and began slowing the Space Rider mock-up's descent before its larger, steerable parafoil was supposed to unfurl. The parafoil, however, detached during deployment, leaving the vehicle in freefall before impacting the ground. ESA has subsequently recovered all the craft's components.
I'd like to say something like "parachutes fail... it happens," but that sounds a little lowbrow. It's certainly something that shouldn't happen on a real mission, but, it sounds like they're operating with the belief that they need to build a replacement model to continue or re-start the testing and just the fact it's a model means many retests are required. That means this failure doesn't affect the rebuild and retest much at all.
The target for a "real" mission of the Space Rider system is just "later this decade." The could mean tomorrow or it could mean December of 2029.



























