Author Topic: SpaceX Core Spotting  (Read 138246 times)

Offline 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

Offline 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.

Offline 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/
"The Falcon has landed"

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.

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