Author Topic: FAILURE: Astra Rocket 3.1 - Kodiak - September 12, 2020 (03:19 UTC)  (Read 56465 times)

Offline jacobmarley

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Re: Astra Rocket 3.1 - Kodiak - NET August 2, 2020
« Reply #40 on: 08/03/2020 03:24 am »
any livestream available ?

Offline Steven Pietrobon

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Re: Astra Rocket 3.1 - Kodiak - NET August 2, 2020
« Reply #41 on: 08/03/2020 03:26 am »
There is no livestream, only tweets.

https://twitter.com/Astra/status/1290126499161366534

"T-20 minutes, propellant loading is complete"
« Last Edit: 08/03/2020 03:28 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline sdsds

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Re: Astra Rocket 3.1 - Kodiak - NET August 2, 2020
« Reply #42 on: 08/03/2020 03:27 am »
Kestrel (Falcon 1 second stage engine) was reported as 6,900 pounds-force (Vac) and Delphin (Rocket 3.1 first stage) is reported as 6,300 lbf (SL); both RP-1/LOX. Are they similar engines?
— 𝐬𝐝𝐒𝐝𝐬 —

Offline Steven Pietrobon

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Re: Astra Rocket 3.1 - Kodiak - NET August 2, 2020
« Reply #43 on: 08/03/2020 03:36 am »
Boat on the range!

https://twitter.com/Astra/status/1290128604718755842

"T-12 minutes, but range is currently awaiting clearance of a boat down range"
« Last Edit: 08/03/2020 03:41 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: Astra Rocket 3.1 - Kodiak - NET August 2, 2020
« Reply #44 on: 08/03/2020 03:42 am »
Scrub for today.

https://twitter.com/Astra/status/1290130323167014913

"Boat could not be cleared in time for us to launch within the window (ends at 9pm PT), and we have to unfortunately scrub for today"
« Last Edit: 08/03/2020 03:44 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: Astra Rocket 3.1 - Kodiak - NET August 2, 2020
« Reply #45 on: 08/03/2020 03:46 am »
Updates tomorrow.

https://twitter.com/Astra/status/1290130824965181440

"The good news is that we have more launch opportunities: stay tuned for updates tomorrow"
« Last Edit: 08/03/2020 03:46 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: Astra Rocket 3.1 - Kodiak - NET August 2, 2020
« Reply #46 on: 08/03/2020 03:49 am »
Kestrel (Falcon 1 second stage engine) was reported as 6,900 pounds-force (Vac) and Delphin (Rocket 3.1 first stage) is reported as 6,300 lbf (SL); both RP-1/LOX. Are they similar engines?

No. Kestrel uses a traditional turbine pump pressure fed engine, while Delphin is electric pump fed.
« Last Edit: 08/03/2020 04:06 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: Astra Rocket 3.1 - Kodiak - NET August 2, 2020
« Reply #47 on: 08/03/2020 03:55 am »
Here's the Rocket 3.1 press kit. Vehicle details

First Stage: Five 28 kN SL Delphin electric pump fed kerolox engines for 140 kN total.
Second Stage: One 3.1 kN vacuum Aether pressure fed kerolox engine
Total Length: 11.6 m
Diameter: 1.32 m

Mission Timeline
  m:ss
+0:05 Roll program initiated
+0:25 Vehicle clears range
+1:00 Max Q
+2:03 Begin engine throttle down
+2:18 MECO
+2:20 Fairing separation
+2:27 First stage separation
+2:32 Aether ignition
+8:48 SECO
+8:51 Payload deployment signal
« Last Edit: 08/03/2020 04:05 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Online Comga

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Re: Astra Rocket 3.1 - Kodiak - NET August 2, 2020
« Reply #48 on: 08/03/2020 03:59 am »
Kestrel (Falcon 1 second stage engine) was reported as 6,900 pounds-force (Vac) and Delphin (Rocket 3.1 first stage) is reported as 6,300 lbf (SL); both RP-1/LOX. Are they similar engines?

No. Kestrel uses a traditional turbine pump fed engine, while Delphin is electric pump fed.

Kestrel was pressure fed. 
What kind of wastrels would dump a perfectly good booster in the ocean after just one use?

Offline tyrred

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Re: Astra Rocket 3.1 - Kodiak - NET August 3, 2020
« Reply #49 on: 08/03/2020 06:10 am »
Boats. Aargh. Any Coast Guard assets in the region that can run interference, or is that outside the purview? Does anyone know if a NOTMAR was issued?

Would have loved to see this candle light up today.


Re: Astra Rocket 3.1 - Kodiak - NET August 3, 2020
« Reply #50 on: 08/03/2020 07:50 am »
Quite a day for random private boats in spaceflight, between this and the Dragon splashdown.
Wait, ∆V? This site will accept the ∆ symbol? How many times have I written out the word "delta" for no reason?

Online FutureSpaceTourist

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Re: Astra Rocket 3.1 - Kodiak - NET August 3, 2020
« Reply #51 on: 08/03/2020 04:59 pm »
https://twitter.com/astra/status/1290331230676779008

Quote
🌩️ Update: We won't be making a launch attempt today due to weather (triggered lightning). Our launch window is through August 7th and weather is expected to improve through the week.
« Last Edit: 08/03/2020 04:59 pm by FutureSpaceTourist »

Offline Thunderscreech

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Re: Astra Rocket 3.1 - Kodiak - NET August 4, 2020
« Reply #52 on: 08/03/2020 07:50 pm »
On the subject of their window being through the 7th, they appear to have updated their TFR to go through Saturday the 8th to allow for more opportunities. through Friday to match the launch window.  (Correction: UTC time conversion error on my part, local time is PDT)

TFR: https://tfr.faa.gov/save_pages/detail_0_7923.html

https://twitter.com/SpaceTfrs/status/1290373885834047488?s=20
« Last Edit: 08/03/2020 07:54 pm by Thunderscreech »
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Online FutureSpaceTourist

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Re: Astra Rocket 3.1 - Kodiak - NET August 4, 2020
« Reply #53 on: 08/03/2020 08:23 pm »
https://twitter.com/johnkrausphotos/status/1290372300148101120

Quote
Astra’s Rocket 3.1 is seen at the Pacific Spaceport Complex in Kodiak, Alaska, with the rising full moon as a backdrop in the early hours of August 3rd, 2020.

Photo: Me for @Astra

Offline FlattestEarth

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Re: Astra Rocket 3.1 - Kodiak - NET August 5, 2020
« Reply #54 on: 08/04/2020 02:37 pm »
Is there an attempt today? TFR starts 6pm local today.

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Re: Astra Rocket 3.1 - Kodiak - NET August 5, 2020
« Reply #55 on: 08/04/2020 06:02 pm »
https://twitter.com/astra/status/1290707505866092544

Quote
🚀 Update: weather has improved to 60% favorable today! We are hoping to launch tonight and we will provide another update in a few hours

📸 @johnkrausphotos

Offline Twark_Main

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Re: Astra Rocket 3.1 - Kodiak - NET August 5, 2020
« Reply #56 on: 08/04/2020 10:26 pm »
https://twitter.com/Astra/status/1290771173861543937

Quote
We are GO for tonight's launch attempt! Weather is closely being monitored, follow us live here


 @johnkrausphotos
« Last Edit: 08/04/2020 10:30 pm by Twark_Main »
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Offline Steven Pietrobon

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Re: Astra Rocket 3.1 - Kodiak - NET August 5, 2020
« Reply #57 on: 08/05/2020 01:21 am »
Holding at T-50 minutes.

https://twitter.com/Astra/status/1290818403020574721

"We are currently on hold at T-50 minutes and troubleshooting a minor issue, more updates to come"
« Last Edit: 08/05/2020 02:10 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: Astra Rocket 3.1 - Kodiak - NET August 5, 2020
« Reply #58 on: 08/05/2020 02:09 am »
Still investigating the issue.

https://twitter.com/Astra/status/1290832009447657477

"We are still investigating the issue and we'll provide another update in about 30 minutes"
« Last Edit: 08/05/2020 02:10 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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Re: Astra Rocket 3.1 - Kodiak - NET August 5, 2020
« Reply #59 on: 08/05/2020 02:35 am »
Resolution of issue under test.

https://twitter.com/Astra/status/1290838445435150336

"We believe we have resolved the issue and are running tests to confirm before stepping back into the count"
« Last Edit: 08/05/2020 02:36 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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