Author Topic: SpaceX Core Spotting  (Read 152079 times)

Online Alexphysics

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Re: SpaceX Core Spotting
« Reply #360 on: 01/30/2019 09:07 am »
Focusing solely on what info that's readily available to the public, we can see that, for CRS missions, NASA only tends to reuse B5 boosters that have flown on previous NASA missions.  My bet is CRS-17 will utilize B1052 as there probably won't be enough of a turnaround to reuse B1051.

This precedence may have changed since CRS-15 and, if so, then all bets are off on core assignments: B1048 is likely the PSN-6 booster, so B1047 might be the CRS-17 booster then, but I do not think this is likely.

I recall that the deciding criteria was the return profile of the core. If the core has a gentle descend, its a candidate for a NASA mission. In the past, that was mostly dragon missions, hence the (in my opinion) misconception that NASA only wants cores from previous NASA missions.

Yup, it's mostly this. Things can change but I doubt they'll start reusing GTO boosters on a twice flown one. They'll get there... I hope

Online Orbiter

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Re: SpaceX Core Spotting
« Reply #361 on: 01/30/2019 03:17 pm »
Focusing solely on what info that's readily available to the public, we can see that, for CRS missions, NASA only tends to reuse B5 boosters that have flown on previous NASA missions.  My bet is CRS-17 will utilize B1052 as there probably won't be enough of a turnaround to reuse B1051.

This precedence may have changed since CRS-15 and, if so, then all bets are off on core assignments: B1048 is likely the PSN-6 booster, so B1047 might be the CRS-17 booster then, but I do not think this is likely.

I recall that the deciding criteria was the return profile of the core. If the core has a gentle descend, its a candidate for a NASA mission. In the past, that was mostly dragon missions, hence the (in my opinion) misconception that NASA only wants cores from previous NASA missions.

You're right, I forgot NASA's Grace-FO flew on a booster that hadn't previously flown on a NASA mission just last year. Still though, this precedence rules out any available booster.*

*Unless the assumption that I made that B1048 is flying on PSN-6 is incorrect and NASA is ready to fly a booster on its third flight, which isn't impossible.
Attended space missions: STS-114, STS-124, STS-128, STS-135, Atlas V "Curiosity", Delta IV Heavy NROL-15, Atlas V MUOS-2, Delta IV Heavy NROL-37, Falcon 9 CRS-9, Falcon 9 JCSAT-16, Atlas V GOES-R, Falcon 9 SES-11, Falcon Heavy Demo, Falcon 9 Es'hail-2.

Online Orbiter

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Re: SpaceX Core Spotting
« Reply #362 on: 02/11/2019 05:33 pm »
Falcon spotted enroute to Cape Canaveral, likely FH center stage.
Attended space missions: STS-114, STS-124, STS-128, STS-135, Atlas V "Curiosity", Delta IV Heavy NROL-15, Atlas V MUOS-2, Delta IV Heavy NROL-37, Falcon 9 CRS-9, Falcon 9 JCSAT-16, Atlas V GOES-R, Falcon 9 SES-11, Falcon Heavy Demo, Falcon 9 Es'hail-2.

Offline RocketLover0119

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Re: SpaceX Core Spotting
« Reply #363 on: 02/12/2019 11:54 am »
Falcon spotted enroute to Cape Canaveral, likely FH center stage.

Link to the post on Reddit, picture below, can't tell of any bumps on the interstage....

https://www.reddit.com/r/spacex/comments/apit4c/j_murrahs_photo_of_a_first_stage_heading_east_at/
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Offline vaporcobra

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Re: SpaceX Core Spotting
« Reply #364 on: 02/12/2019 10:20 pm »
Falcon spotted enroute to Cape Canaveral, likely FH center stage.

Link to the post on Reddit, picture below, can't tell of any bumps on the interstage....

https://www.reddit.com/r/spacex/comments/apit4c/j_murrahs_photo_of_a_first_stage_heading_east_at/

More than a little tenuous but this does look very much like a rectangular component in the right place to be FH-specific. It's definitely not a normal feature of F9 boosters in transport.

Online Orbiter

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Re: SpaceX Core Spotting
« Reply #365 on: 02/22/2019 01:36 am »
Elon has just stated B1048 will refly again in April. Also was a FCC filing for an unknown April launch with a high inclination from the Cape, so I'm going to guess it's for that mission.
Attended space missions: STS-114, STS-124, STS-128, STS-135, Atlas V "Curiosity", Delta IV Heavy NROL-15, Atlas V MUOS-2, Delta IV Heavy NROL-37, Falcon 9 CRS-9, Falcon 9 JCSAT-16, Atlas V GOES-R, Falcon 9 SES-11, Falcon Heavy Demo, Falcon 9 Es'hail-2.

Online gongora

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Re: SpaceX Core Spotting
« Reply #366 on: 02/22/2019 01:48 am »
Elon has just stated B1048 will refly again in April. Also was a FCC filing for an unknown April launch with a high inclination from the Cape, so I'm going to guess it's for that mission.

Maybe?  Their environmental docs for the test said flat out it would be expendable, but SpaceX tends to change things.

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Re: SpaceX Core Spotting
« Reply #367 on: 02/22/2019 01:59 am »
Elon has just stated B1048 will refly again in April. Also was a FCC filing for an unknown April launch with a high inclination from the Cape, so I'm going to guess it's for that mission.

Maybe?  Their environmental docs for the test said flat out it would be expendable, but SpaceX tends to change things.

Looks like I was wrong! B1048 will fly the inflight abort test per Elon:

https://twitter.com/elonmusk/status/1098768310844313601
Attended space missions: STS-114, STS-124, STS-128, STS-135, Atlas V "Curiosity", Delta IV Heavy NROL-15, Atlas V MUOS-2, Delta IV Heavy NROL-37, Falcon 9 CRS-9, Falcon 9 JCSAT-16, Atlas V GOES-R, Falcon 9 SES-11, Falcon Heavy Demo, Falcon 9 Es'hail-2.

Offline vaporcobra

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Re: SpaceX Core Spotting
« Reply #368 on: 02/28/2019 06:37 pm »

Offline scr00chy

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Re: SpaceX Core Spotting
« Reply #369 on: 02/28/2019 06:54 pm »
There are two boosters visible inside HIF in the new Crew Dragon video. I'm guessing they're the Arabsat sideboosters?
https://twitter.com/SpaceX/status/1101180975663407105

Offline vaporcobra

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Re: SpaceX Core Spotting
« Reply #370 on: 02/28/2019 06:58 pm »
There are two boosters visible inside HIF in the new Crew Dragon video. I'm guessing they're the Arabsat sideboosters?

From observations, I believe we can say for sure that at least one of them is a side core. The other could be a center (presumed) or side core.

Offline stcks

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Re: SpaceX Core Spotting
« Reply #371 on: 02/28/2019 07:23 pm »
There are two boosters visible inside HIF in the new Crew Dragon video. I'm guessing they're the Arabsat sideboosters?

From observations, I believe we can say for sure that at least one of them is a side core. The other could be a center (presumed) or side core.

I would guess that all three are in the HIF based on the placement of the one closest to 1051 in the rollout video, but thats only a wild guess.
« Last Edit: 02/28/2019 07:23 pm by stcks »

Offline PM3

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Re: SpaceX Core Spotting
« Reply #372 on: 03/01/2019 01:55 am »
There are two boosters visible inside HIF in the new Crew Dragon video. I'm guessing they're the Arabsat sideboosters?

From observations, I believe we can say for sure that at least one of them is a side core. The other could be a center (presumed) or side core.

I would guess that all three are in the HIF based on the placement of the one closest to 1051 in the rollout video, but thats only a wild guess.

A brilliant idea. Then let's have a look at the integration building at LC-39A. According to OSM and Google Maps, it's about 93-94 m long. And if this is correct, a Falcon 9 v1.2 booster incl. interstage has a total length of ~ 47 m. (Afaik there was no substancial change with Block 5). Now, from that video, I guess that there is ~ 5 m space in front of the booster to the left. Do the math, and you find out that - unfortunatly - there is not enough space to store a third booster in the back.

(Note that the integration hangar is less wide than the outline on that OSM map - there is some lower building attached to the left. Therfore I left the space to the left.)
« Last Edit: 03/01/2019 02:13 am by PM3 »

Offline stcks

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Re: SpaceX Core Spotting
« Reply #373 on: 03/01/2019 02:47 am »
A brilliant idea. Then let's have a look at the integration building at LC-39A. According to OSM and Google Maps, it's about 93-94 m long. And if this is correct, a Falcon 9 v1.2 booster incl. interstage has a total length of ~ 47 m. (Afaik there was no substancial change with Block 5). Now, from that video, I guess that there is ~ 5 m space in front of the booster to the left. Do the math, and you find out that - unfortunatly - there is not enough space to store a third booster in the back.

(Note that the integration hangar is less wide than the outline on that OSM map - there is some lower building attached to the left. Therfore I left the space to the left.)

Nah, I just mean 2 boosters on the left. Theres room in the HIF for 5 across if they want to do it, the TEL makes it very very tight.

Offline FutureSpaceTourist

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Re: SpaceX Core Spotting
« Reply #374 on: 03/01/2019 05:31 pm »
https://twitter.com/mike_seeley/status/1101542709330890752

Quote
During remote camera setup for the #SpaceX #DM1 launch, we were photobombed by a second stage...

Online Roy_H

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Re: SpaceX Core Spotting
« Reply #375 on: 03/04/2019 11:48 pm »
A while back a new thread was started "SpaceX Core Reuse Schedule" in Missions section which I thought was a great idea. The first post had a chart which I expected the thread's creator to keep up, but he didn't. I don't think it really belonged in the Missions section as it functionally duplicated info here. However I really like the idea of the first post being a chart and maintained so you can always go to one place to view current status.

Two things, I have created a chart and would like your input both on what it shows and Current Status. and second, do you think it is worth starting a new thread? Or is this already being done somewhere, link please.
Edit: Just to clarify, is somebody doing this on nasaspaceflight.
Edit: Added to definitions.
« Last Edit: 03/06/2019 03:18 pm by Roy_H »
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Offline Stefan.Christoff.19

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Re: SpaceX Core Spotting
« Reply #376 on: 03/05/2019 03:32 pm »
A while back a new thread was started "SpaceX Core Reuse Schedule" in Missions section which I thought was a great idea. The first post had a chart which I expected the thread's creator to keep up, but he didn't. I don't think it really belonged in the Missions section as it functionally duplicated info here. However I really like the idea of the first post being a chart and maintained so you can always go to one place to view current status.

Two things, I have created a chart and would like your input both on what it shows and Current Status. and second, do you think it is worth starting a new thread? Or is this already being done somewhere, link please.
Edit: Just to clarify, is somebody doing this on nasaspaceflight.

I created that thread and I still keep an updated schedule, but didn't seem like there was enough interest to keep updating the thread. I will post an update tonight. I'm glad you found it useful.

Offline Lar

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Re: SpaceX Core Spotting
« Reply #377 on: 03/05/2019 03:53 pm »
What does the A in the available column mean?
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Online Roy_H

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Re: SpaceX Core Spotting
« Reply #378 on: 03/05/2019 04:31 pm »
What does the A in the available column mean?

I was planning on following Stephan.Christoff's design having A= Available, R= being Refurbished, N= Not available.
Unless of course there are others here with a better suggestion.
"If we don't achieve re-usability, I will consider SpaceX to be a failure." - Elon Musk

Offline DeanG1967

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Re: SpaceX Core Spotting
« Reply #379 on: 03/06/2019 11:28 am »
FWIW.  I use this site for core info

https://www.reddit.com/r/spacex/wiki/cores


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