Volume up! Rocket 3.1’s orbital launch attempt pic.twitter.com/nm1bDewdl5September 12, 2020
After a failed launch debut, the space startup Astra may be able to attempt its second orbital test shot before 2020 ends.
The California-based company launched its first orbital test flight Friday night (Sept. 11), sending its 38-foot-tall (12 meters) Rocket 3.1 vehicle skyward from the Pacific Spaceport Complex on Alaska’s Kodiak Island.
Everything went well with the launch at first. But then Rocket 3.1 began to drift off course, spurring launch controllers to command an engine shutdown for safety reasons about 30 seconds after liftoff. The booster came down to Earth with a bang, exploding in a fireball visible to some observers on the ground.
Preliminary data analyses suggest that the problem arose in Rocket 3.1’s guidance system, which “appeared to introduce some slight roll oscillations into the flight,” Astra co-founder and chief technology officer Adam London told reporters during a teleconference on Saturday afternoon (Sept. 12).
The fireball, though dramatic, was not dangerous, said Astra co-founder and CEO Chris Kemp, stressing that Rocket 3.1’s flight-termination system did its job as expected.
The two-stage booster is so small that an onboard self-destruct system is not required, he explained.
“We can actually just cause the rocket to safely land within a safety area by commanding the engines to stop,” Kemp said. “That’s a very effective technique. And it means the rocket doesn’t have any explosives or pyrotechnics onboard, which makes it safer.”
It appears that the guidance glitch was caused by a software issue, London and Kemp said. That’s good news if confirmed, suggesting that Astra’s road back to the launch pad won’t be a particularly long or grueling one, they added.
“We could’ve learned things that could’ve set us back six months or a year,” Kemp said.
Instead, the required changes “will likely involve a software update to our guidance system,” he added. “That’s fantastic news, and I couldn’t be more delighted that we will likely be up to Alaska before the end of the year with Rocket 3.2.”
Rocket 3.2 is nearly ready to go. Final assembly and testing of the booster, which is very similar to Rocket 3.1, is underway at Astra’s Bay Area headquarters, London said.
Astra, which was founded in 2016, aims to reach orbit successfully within three tries. Rocket 3.1’s performance Friday night was encouraging, keeping the company on track to achieve that goal, Kemp said.
Thanks, @elonmusk. We appreciate that and are encouraged by the progress we made today on our first of three flights on our way to orbit https://t.co/CrH8iBYNpSSeptember 12, 2020
Over the longer term, Astra wants to secure a sizable chunk of the small-satellite launch market. That market is currently dominated by Rocket Lab, which gives smallsats dedicated rides to orbit (as Astra plans to do), and SpaceX, which carries bantam spacecraft as “rideshares” on missions that loft big primary payloads.
Astra aims to carve out its niche with a cost-effective, flexible and highly responsive launch system. The entire Rocket 3.1 launch system, for example, was deployed by just six people in less than a week ahead of Friday night’s test flight, Astra representatives said.
“There just aren’t enough launches going to enough destinations on the schedules that are demanded by this new generation of small-satellite payloads,” Kemp said. “We’re really excited to join Rocket Lab, SpaceX and other companies that are delivering this next generation of satellites to help us better serve people here on Earth with new services to connect and improve our lives.”
Source: Space.com