MarsPolar

Astra set up a rocket launch with five people and came within seconds of orbit

If we're being honest, Astra's first orbital launch attempt in September was just not all that impressive. Within 10 or 15 seconds of launching, Rocket 3.1 began to veer off course, and it had to be commanded to shut down before it flew out of its safety corridor.

After the flight, Astra's leaders put a brave face on the short mission, saying they were "pretty pleased" with the rocket's performance, and they thought they were dealing with a software problem rather than a hardware one. Even so, it did not exactly instill confidence in the four-year-old company. The COVID-19 pandemic was starting to flare back up across the world, fundraising was tight in the industry, and it seemed like Astra may still have a very long way to go before getting into space.

Amid these dark times, however, Astra's team of about 100 employees put their heads down and their masks on and plowed forward. In doing so, they worked something of a miracle, readying Rocket 3.2 and getting it to the company's launch site in Alaska in fewer than three months.

This in and of itself is a rather notable achievement. Compared to other commercially developed small rockets, three months is a blink of an eye. Northrop Grumman took 15 months between the flight of its first and second Pegasus rockets; SpaceX needed a year between the first two Falcon 1 missions; and Rocket Lab required eight months between its first and second Electron flights.

Poor weather prevented launch attempts on Friday and through the weekend, but by Tuesday, the upper-level winds over the spaceport in Kodiak, Alaska, lessened. By 12:55pm local time, conditions were acceptable despite the leaden skies overhead, and the rocket with its five main engines roared to life.

This time, there were no issues with the rocket's ascent. It followed its flight trajectory nearly dead on. A couple of minutes into flight, the main engines shut down, and the second stage separated. Its engine, too, lit. This upper stage then burnt all of its propellant and simulated the deployment of a payload into space.

Alas, Rocket 3.2 did not reach orbit. The company had not quite gotten the mixture of kerosene to oxidizer correct—something that is difficult to test on the ground—and wound up with an excess of liquid oxygen. Had the upper stage burnt kerosene for a few more seconds, the upper stage would have reached orbit. As it was, the booster peaked at an apogee of 390km above the Earth's surface.

"It's really hard for us to process the outcome here," said Chris Kemp, the chief executive of Astra and the company's co-founder, during a call with reporters. While he said the company was still able to raise money during the pandemic, he admitted this successful flight would unlock contracts and allow Astra more access to less expensive capital. "It's a really nice Christmas present for the team as we go into the holidays," he said.

Astra set up a rocket launch with five people and came within seconds of orbit

If we're being honest, Astra's first orbital launch attempt in September was just not all that impressive. Within 10 or 15 seconds of launching, Rocket 3.1 began to veer off course, and it had to be commanded to shut down before it flew out of its safety corridor.

After the flight, Astra's leaders put a brave face on the short mission, saying they were "pretty pleased" with the rocket's performance, and they thought they were dealing with a software problem rather than a hardware one. Even so, it did not exactly instill confidence in the four-year-old company. The COVID-19 pandemic was starting to flare back up across the world, fundraising was tight in the industry, and it seemed like Astra may still have a very long way to go before getting into space.

Amid these dark times, however, Astra's team of about 100 employees put their heads down and their masks on and plowed forward. In doing so, they worked something of a miracle, readying Rocket 3.2 and getting it to the company's launch site in Alaska in fewer than three months.

This in and of itself is a rather notable achievement. Compared to other commercially developed small rockets, three months is a blink of an eye. Northrop Grumman took 15 months between the flight of its first and second Pegasus rockets; SpaceX needed a year between the first two Falcon 1 missions; and Rocket Lab required eight months between its first and second Electron flights.

Poor weather prevented launch attempts on Friday and through the weekend, but by Tuesday, the upper-level winds over the spaceport in Kodiak, Alaska, lessened. By 12:55pm local time, conditions were acceptable despite the leaden skies overhead, and the rocket with its five main engines roared to life.

This time, there were no issues with the rocket's ascent. It followed its flight trajectory nearly dead on. A couple of minutes into flight, the main engines shut down, and the second stage separated. Its engine, too, lit. This upper stage then burnt all of its propellant and simulated the deployment of a payload into space.

Alas, Rocket 3.2 did not reach orbit. The company had not quite gotten the mixture of kerosene to oxidizer correct—something that is difficult to test on the ground—and wound up with an excess of liquid oxygen. Had the upper stage burnt kerosene for a few more seconds, the upper stage would have reached orbit. As it was, the booster peaked at an apogee of 390km above the Earth's surface.

"It's really hard for us to process the outcome here," said Chris Kemp, the chief executive of Astra and the company's co-founder, during a call with reporters. While he said the company was still able to raise money during the pandemic, he admitted this successful flight would unlock contracts and allow Astra more access to less expensive capital. "It's a really nice Christmas present for the team as we go into the holidays," he said.

This flexible approach to launch, requiring a minimal amount of infrastructure, is the kind of thing the US Defense Advanced Research Projects Agency sought to foster through its launch challenge. The competition ended earlier this year without a winner, but Astra came closest to claiming the prize.

"I'm happy to see Astra achieve most of their goals with this flight after watching their team put in a lot of hard work," said Todd Master, who managed the launch challenge for DARPA. "A diversity of launch vehicles with a range of capability and prices portends interesting possibilities for future Department of Defense uses."

SpaceX reaches 100 successful launches with Starlink mission -Spacenews.com

WASHINGTON — SpaceX launched another set of Starlink satellites Oct. 24, marking the 100th time the company has placed payloads into orbit.

The Falcon 9 rocket lifted off from Space Launch Complex 40 at Cape Canaveral Air Force Station at 11:31 a.m. Eastern. The rocket’s upper stage deployed the payload of 60 Starlink satellites into orbit 63 minutes after liftoff. The first stage, making its third flight, landed on a droneship in the Atlantic Ocean.

This was the 100th successful launch in the company’s history. That total includes 95 Falcon 9, three Falcon Heavy and two Falcon 1 launches. The company also suffered three Falcon 1 launch failures and one Falcon 9 launch failure; another Falcon 9 was destroyed in 2016 during preparations for a static-fire test.

Read more:

https://spacenews.com/spacex-reaches-100-successful-launches-with-starlink-mission/

#КОСМОС #марс #宇宙 #火星

SpaceX reaches 100 successful launches with Starlink mission - SpaceNews SpaceX launched another set of Starlink satellites Oct. 24, marking the 100th time the company has placed payloads into orbit.