Author Topic: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion  (Read 192337 times)

Offline Lar

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Re: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #280 on: 04/18/2018 09:34 pm »
It's landing on the drone ship which is downrange.
But (if I understand correctly).... not very FAR downrange,  so either highly lofted or a partial boostback.
"I think it would be great to be born on Earth and to die on Mars. Just hopefully not at the point of impact." -Elon Musk
"We're a little bit like the dog who caught the bus" - Musk after CRS-8 S1 successfully landed on ASDS OCISLY

Offline flyright

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Re: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #281 on: 04/18/2018 09:41 pm »
I scored a last second ticket for the LC-39 Observation Gantry. 🙂

Offline the_other_Doug

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Re: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #282 on: 04/18/2018 10:10 pm »
It's landing on the drone ship which is downrange.
But (if I understand correctly).... not very FAR downrange,  so either highly lofted or a partial boostback.

Exactly.  I can't imagine a trajectory that would work for the conditions you'll need at MECO and one that, with no boostback, only goes that little ways beyond the beach.  It's what, well less than 100 km out, right?  A full downrange landing with no boostback on a GTO mission is like 5 to 10 times farther, right?  And a GTO insertion would usually have a much higher MECO velocity than TESS ought to have, I would think.

MECO would happen at, like 300+ km if there was no boostback, I would think, without enough downrange velocity for stage 2 to hit its targets... :(

Of course, I'm not a trajectory analyst.  I'm just looking at it from the point of view of comparative reasonableness.  Only going as far offshore as OCISLY is stationed without a boostback just seems, I dunno -- not reasonable.  From a lot of perspectives.
-Doug  (With my shield, not yet upon it)

Offline the_other_Doug

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Re: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #283 on: 04/18/2018 10:25 pm »
I would really like to know how the YouTube app on most devices manages its search results.

On a quite standard YouTube app, I just entered the search phrase SpaceX TESS launch.  It showed something like 30 search results -- everything from rebroadcasts of SpaceX's current feed by other websites, to recordings of the 16th's scrub, to Falcon Heavy and BFR simulations -- before it listed SpaceX's own streaming channel for today's launch.

Which was listed as "SpaceX TESS launch".  The *exact* text of my search phrase.

You would think high-profile online content management systems like YouTube would understand that we are smart enough to realize that they're giving results that badly fit the search criteria precedence over results which fit them well.  That can only mean that, 1) their search function sucks rocks, or 2) they are giving some types of providers precedence, even when their result doesn't really fit.  For monetary or other considerations.

You'd be surprised how many people believe it's option number 1... sigh...
-Doug  (With my shield, not yet upon it)

Re: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #284 on: 04/18/2018 10:41 pm »
Looks like boostback is confirmed.

Offline Halidon

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Re: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #285 on: 04/18/2018 10:56 pm »
May be talking out of a dark place, but did fairing sep look a little more hinkey than in the past to anyone else?

Offline matthewkantar

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Re: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #286 on: 04/18/2018 10:58 pm »
May be talking out of a dark place, but did fairing sep look a little more hinkey than in the past to anyone else?

Looked five by five to me.

Offline Halidon

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Re: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #287 on: 04/18/2018 11:01 pm »
May be talking out of a dark place, but did fairing sep look a little more hinkey than in the past to anyone else?

Looked five by five to me.
Good to hear, may just have been my feed.

Offline nacnud

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Re: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #288 on: 04/18/2018 11:02 pm »
Is that the first time that we've seen the drone ship landing from the booster live with no loss of signal?

Offline MLang

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Re: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #289 on: 04/18/2018 11:04 pm »
Is that the first time that we've seen the drone ship landing from the booster live with no loss of signal?

I think so, I can't recount a time where we have seen this before.

The feed from the barge itself however... still per usual

Offline Star One

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SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #290 on: 04/18/2018 11:06 pm »
I would really like to know how the YouTube app on most devices manages its search results.

On a quite standard YouTube app, I just entered the search phrase SpaceX TESS launch.  It showed something like 30 search results -- everything from rebroadcasts of SpaceX's current feed by other websites, to recordings of the 16th's scrub, to Falcon Heavy and BFR simulations -- before it listed SpaceX's own streaming channel for today's launch.

Which was listed as "SpaceX TESS launch".  The *exact* text of my search phrase.

You would think high-profile online content management systems like YouTube would understand that we are smart enough to realize that they're giving results that badly fit the search criteria precedence over results which fit them well.  That can only mean that, 1) their search function sucks rocks, or 2) they are giving some types of providers precedence, even when their result doesn't really fit.  For monetary or other considerations.

You'd be surprised how many people believe it's option number 1... sigh...

Do you think Google are just there to give away content for free. It’s a trade as with so many of these free online services more often you’re trading your data in exchange for the service. I for one don’t begrudge them doing this as they have a business to run, nor the people on there who have to monetise their content as that’s their career. This shouldn’t be an issue provided both parties are aware of this.

Anyway the easy answer is just subscribe to the right channels and they will always jump up your home feed when needed.
« Last Edit: 04/18/2018 11:34 pm by Star One »

Offline yokem55

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Re: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #291 on: 04/18/2018 11:12 pm »
Maybe it was the lighting, but it seemed like a lot of debris was floating around post SECO and coming off the booster on the way down.

Offline atsf90east

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Re: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #292 on: 04/18/2018 11:17 pm »
I scored a last second ticket for the LC-39 Observation Gantry.

That's the best and closest place to see a LC-40 launch.  I like to get up as high as I can in one of the stairwells and shoot with a telephoto lens.  The image below is from the Thaicom-8 launch.
.
« Last Edit: 04/18/2018 11:21 pm by atsf90east »
Attended Launches: Space Shuttle: STS-85, STS-95, STS-96, STS-103. Falcon 9: Thaicom-8

Offline ZachS09

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Re: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #293 on: 04/18/2018 11:22 pm »
Instead of filming a launch montage for today's mission, I decided to take zoomed-in snapshots of the early ascent from my typical position at Embry-Riddle Daytona Beach.
Liftoff for St. Jude's! Go Dragon, Go Falcon, Godspeed Inspiration4!

Offline Marsin2010

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Re: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #294 on: 04/18/2018 11:29 pm »
My Launch Central video feed was very fuzzy.  The countdown timer and the progress bar text were quite illegible.  I reset the feed several times.  It would briefly clear up and then go fuzzy again.  Whereas my simultaneous NASA TV feed was extremely crisp.  I have watched well over 40 Falcon 9 launches and have never had this happen before.  Anyone else?

Offline Kabloona

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Re: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #295 on: 04/18/2018 11:30 pm »
Is that the first time that we've seen the drone ship landing from the booster live with no loss of signal?

Maybe because of relative nearness of the booster to shore at landing, so no over-the-horizon LOS.

Offline Comga

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Re: No TESS Landing Bingo?
« Reply #296 on: 04/18/2018 11:47 pm »
No landing bingo this time? Avoiding bad omen as all last bingos failed?  :'(

It would hardly be a contest anymore.

So smooth!
What kind of wastrels would dump a perfectly good booster in the ocean after just one use?

Offline Joffan

Re: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #297 on: 04/18/2018 11:51 pm »
I'm guessing that SpaceX are feeding their graphics through to NASA even though the SpaceX webcast finished
Getting through max-Q for humanity becoming fully spacefaring

Offline marsbase

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Re: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #298 on: 04/18/2018 11:54 pm »
My Launch Central video feed was very fuzzy.  The countdown timer and the progress bar text were quite illegible.  I reset the feed several times.  It would briefly clear up and then go fuzzy again.  Whereas my simultaneous NASA TV feed was extremely crisp.  I have watched well over 40 Falcon 9 launches and have never had this happen before.  Anyone else?

I had the same experience as you including the fact that the countdown timer would clear up briefly each time I reloaded the site and then get fuzzy again.  I have not seen this before.

Offline Thorny

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Re: SpaceX Falcon 9 : TESS : April 18, 2018 : Discussion
« Reply #299 on: 04/19/2018 12:00 am »
Is that the first time that we've seen the drone ship landing from the booster live with no loss of signal?


I think there was one in 2016 that we saw all the way down to OCISLY.

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