Author Topic: FAILURE: Astra Rocket 3.3 STP-27AD1 Kodiak August 28, 2021 (22:35 UTC)  (Read 73878 times)

Offline LouScheffer

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Plenty resilient on the TVC front. In principle you could lose 3 engines and still have total control in every axis. The programming would be a nightmare, and your control margins will still be tiny, but in terms of the physics it's an option.
The programming should be much easier then the all-engines available case.  You have two vectors you can choose, and they need to sum to a third vector.  There's no ambiguity - it's two equations in two unknowns.   In the regular case, you have many more variables than you need, and you have to pick one solution among many, optimizing for other constraints.  It's a much harder math problem.

Offline FlatFootShift

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Any update on when a next launch is being planned for?

Offline TrevorMonty

Its little details that matter, like engines that run till MECO.

https://twitter.com/Astra/status/1435987623902842883?s=19

Sent from my SM-G570Y using Tapatalk
« Last Edit: 09/09/2021 05:36 pm by TrevorMonty »

Offline edkyle99

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Firefly has kept the public informed about the broad path of its early-engine-shut-down investigation.  Anything from Astra on its somewhat similar issue?

 - Ed Kyle

Offline harrystranger

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Imagery from Sentinel-2 shows the scar left by Rocket 3.3 as it did it's slide off of the pad. Comparison in the gif attached below  :)
Measured to be ~80m long.

Offline Comga

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So Firefly got up 50,000 ft without getting offshore and Astra got offshore without gaining any altitude.

We could suggest they collaborate but the combination might be a pad explosion.
What kind of wastrels would dump a perfectly good booster in the ocean after just one use?

Offline Chris Bergin

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