Author Topic: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion  (Read 178486 times)

Offline jcm

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #240 on: 04/15/2018 11:34 pm »
I am reliably informed [senior spacex source] the second stage will indeed make a third burn and enter heliocentric orbit. No party balloon.

I mean, unless Elon has overruled the solar orbit plan at the last moment..
« Last Edit: 04/15/2018 11:34 pm by jcm »
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Offline deruch

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #241 on: 04/15/2018 11:34 pm »
I think there was some discussions about doing some shenanigans with second stage (not full recovery) in past. Maybe whatever mechanism they will use resembles giant party balloon if you squint hard enough.

For "party balloon" maybe read ballute.  But regardless I don't think his tweets were in relation to the TESS launch as during the NASA Social briefing, Hans Koenigsman said that they were going to dispose of the upper stage on a hyperbolic escape trajectory that would send it away from Earth.

Key points from SpaceX's Hans Koenigsmann at a NASA Social event a few moments ago.
 -  Second stage will perform an initial burn, then coast for about 40 minutes, then do a second burn before deploying TESS. Finally, a third burn will dispose the second stage into a hyperbolic escape trajectory.
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Offline jcm

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #242 on: 04/15/2018 11:37 pm »
I think there was some discussions about doing some shenanigans with second stage (not full recovery) in past. Maybe whatever mechanism they will use resembles giant party balloon if you squint hard enough.

For "party balloon" maybe read ballute.  But regardless I don't think his tweets were in relation to the TESS launch as during the NASA Social briefing, Hans Koenigsman said that they were going to dispose of the upper stage on a hyperbolic escape trajectory that would send it away from Earth.

Key points from SpaceX's Hans Koenigsmann at a NASA Social event a few moments ago.
 -  Second stage will perform an initial burn, then coast for about 40 minutes, then do a second burn before deploying TESS. Finally, a third burn will dispose the second stage into a hyperbolic escape trajectory.


Ah, that makes sense - not this flight, but one of the upcoming ones. That I would believe
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Online Robotbeat

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #243 on: 04/15/2018 11:51 pm »
I think there was some discussions about doing some shenanigans with second stage (not full recovery) in past. Maybe whatever mechanism they will use resembles giant party balloon if you squint hard enough.

For "party balloon" maybe read ballute.  But regardless I don't think his tweets were in relation to the TESS launch as during the NASA Social briefing, Hans Koenigsman said that they were going to dispose of the upper stage on a hyperbolic escape trajectory that would send it away from Earth.

Key points from SpaceX's Hans Koenigsmann at a NASA Social event a few moments ago.
 -  Second stage will perform an initial burn, then coast for about 40 minutes, then do a second burn before deploying TESS. Finally, a third burn will dispose the second stage into a hyperbolic escape trajectory.
Ah, good point! I will make a note of this on the update post. Itís almost certainly for some other mission.
Chris  Whoever loves correction loves knowledge, but he who hates reproof is stupid.

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Offline Joffan

I was impressed enough with disposing of the upper stage by escaping to solar orbit. Who else would do that? Has it in fact been done before for an earth-orbit payload?
Getting through max-Q for humanity becoming fully spacefaring

Offline LastStarFighter

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #245 on: 04/16/2018 12:40 am »
I was impressed enough with disposing of the upper stage by escaping to solar orbit. Who else would do that? Has it in fact been done before for an earth-orbit payload?

Atlas V did it on the DMSP18 mission

Offline jcm

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #246 on: 04/16/2018 12:53 am »
I was impressed enough with disposing of the upper stage by escaping to solar orbit. Who else would do that? Has it in fact been done before for an earth-orbit payload?

Atlas V did it on the DMSP18 mission

In fact there have been a bunch of Atlas V LEO missions which have done it. AV-017, AV-012, AV-035, AV-044, AV-047
Very annoying for the NEO asteroid folks as I had to jump through hoops to get the trajectories, still don't have AV-012.
(we don't want to pick these  up and then confuse them for a potentially hazardous asteroid...)
« Last Edit: 04/16/2018 12:54 am by jcm »
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Offline jebbo

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #247 on: 04/16/2018 01:43 am »
Mod question: what's the plan for TESS science updates once it is launched and in the target orbit?
Will the current update thread move to the Science section or will there be a new thread there?

Asking as I've just added the latest science yield paper ...

Edit: if there is a new thread, it is probably worth having a placeholder 1st post for links to things like the Archive Manual, MAST, etc.

--- Tony
« Last Edit: 04/16/2018 01:47 am by jebbo »

Offline gongora

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #248 on: 04/16/2018 02:16 am »
Mod question: what's the plan for TESS science updates once it is launched and in the target orbit?
Will the current update thread move to the Science section or will there be a new thread there?

Asking as I've just added the latest science yield paper ...

Edit: if there is a new thread, it is probably worth having a placeholder 1st post for links to things like the Archive Manual, MAST, etc.

--- Tony

Definitely a thread in Space Science section.  I think I found the first post...  ;)
https://forum.nasaspaceflight.com/index.php?topic=31927.msg1053066#msg1053066

Offline jebbo

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #249 on: 04/16/2018 02:24 am »
Gosh, I don't remember creating that :-)

Offline Tea Party Space Czar

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #250 on: 04/16/2018 02:28 am »
We haven't done a video in awhile but we did do one for TESS.



We want to do more of these.  Trying to widen the net.

Thoughts?

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #251 on: 04/16/2018 04:55 am »
Just to confirm, the second stage will (eventually) escape the solar system?
Space is not Highlander.  There can, and will, be more than one.

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #252 on: 04/16/2018 05:02 am »
Just to confirm, the second stage will (eventually) escape the solar system?
No, just escape Earth. It will become a planetoid, orbiting the Sun.
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Offline rickl

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #253 on: 04/16/2018 05:52 am »
We want to do more of these.  Trying to widen the net.

Thoughts?


Very nice video!  The only flaw I spotted is that the Falcon 9 is a Block 4, not Block 5.
The Space Age is just starting to get interesting.

Offline penguin44

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #254 on: 04/16/2018 05:52 am »
We haven't done a video in awhile but we did do one for TESS.



We want to do more of these.  Trying to widen the net.

Thoughts?

I love it. Great vids and lots of easily understood information in a short time. Well done. (although your video says block 5 and its on a block 4)
« Last Edit: 04/16/2018 05:53 am by penguin44 »

Offline Skylab

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #255 on: 04/16/2018 08:00 am »
Shouldn't the rocket and payload have reached the pad by now? I've not seen any photos of it sitting on the pad since payload integration.

Quote
Omar Baez, NASA LSP: "So the nominal roll out's at midnight, but we probably have three or four hours to be able to move things, to be able to adjust to make it."

Offline GORDAP

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #256 on: 04/16/2018 01:18 pm »
We haven't done a video in awhile but we did do one for TESS.



We want to do more of these.  Trying to widen the net.

Thoughts?

Very Small Nit:  At the 39 second mark, should be "Massachusetts Institute of Technology", not "for".
 
Enjoyed the video!

Offline Mike_1179

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #257 on: 04/16/2018 01:50 pm »
Shouldn't the rocket and payload have reached the pad by now? I've not seen any photos of it sitting on the pad since payload integration.


https://twitter.com/NASA_TESS/status/985858273164365825

Quote

Offline ZachS09

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #258 on: 04/16/2018 02:40 pm »
Wow. It's quite hard for me to look at a Falcon 9 with no soot markings.

I mean, for the last several missions, there's been only reflights.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline marsbase

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Re: SpaceX Falcon 9 : TESS : NET April 16, 2018 : Discussion
« Reply #259 on: 04/16/2018 02:56 pm »
After today's flight and the Bangabandhu in May, 90% will have soot.  8)

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