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Astra launch falters during first stage burn – Spaceflight Now

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September 12, 2020
in Business
Astra launch falters during first stage burn – Spaceflight Now


Astra’s Rocket 3.1 takes off from Kodiak Island, Alaska. Credit: Astra / John Kraus

Astra’s privately-developed small satellite launcher crashed shortly after liftoff from Alaska Friday evening on the company’s first try at reaching orbit.

The startup launch company confirmed on Twitter that the flight ended during the rocket’s first stage burn, following a successful liftoff and initial climb from a launch pad at the Pacific Spaceport Complex on Kodiak Island, Alaska.

“It does look like we got a good amount of nominal flight time,” Astra tweeted.

Astra released updates on the status of the mission on Twitter, but did not provide a public live video stream of the flight.

The 38-foot-tall (11.6-meter) rocket lifted off from Kodiak at 11:19 p.m. EDT Friday (7:19 p.m. Alaska time; 0319 GMT Saturday). A few minutes later, Astra tweeted again to announce that the flight ended shortly after takeoff.

Based in Alameda, California, Astra has developed a small two-stage launcher sized to loft microsatellites and CubeSats into orbit. The launch Friday evening was the Astra’s first try at reaching orbit, but officials cautioned before the test flight that the company was unlikely to achieve orbit on its first attempt.

The liftoff Friday occurred after a series of scrubbed launch attempts in early August caused by technical issues and poor weather. Another launch attempt last month was canceled after a boat strayed into a restricted offshore zone near the launch site on Kodiak Island.

Astra called off a flight attempt Thursday to evaluate data from a sensor, then proceeded with another countdown Friday that culminated in the launch.

The launch vehicle flown Friday, designated Rocket 3.1, was powered by five Astra-built Delphin main engines on its first stage. The kerosene-fueled engines cumulatively generated about 31,500 pounds of thrust.

If the mission had continued Friday, an upper stage on Rocket 3.1 would have ignited a single engine to try to accelerate into a 211-mile-high (340-kilometer) orbit, Astra officials said before the launch.

But Astra set modest expectations for its first flight of an orbital-class rocket.

Chris Kemp, Astra’s co-founder and CEO, said in July that the company did not intend to hit a “hole-in-one” on the Rocket 3.1 test flight by accomplishing all the milestones necessary to climb into space and accelerate to orbital velocity.

“We intend to accomplish enough to ensure that we’re able to get to orbit after three flights, and for us that means a nominal first-stage burn and getting the upper stage to separate successfully,” Kemp said in a conference call with reporters in late July, before the first series of Rocket 3.1 launch attempts.

A tweet from Steve Jurvetson — a venture capitalist with ties to the launch industry — suggested the rocket’s engines “cut out” about 30 seconds after liftoff.

Amateur videos from Kodiak Island shared on social media also appeared to show the rocket’s engines prematurely shutting down shortly after launch. The rocket is then seen exploding on impact at the spaceport, presumably in an area cleared of personnel.

pic.twitter.com/PGYv26ZqrF

— Jennifer…



Read More News: Astra launch falters during first stage burn – Spaceflight Now

Tags: AstraburnfalterslaunchSpaceflightstage

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