Author Topic: SpaceX Falcon 9 / Dragon 2 : SpX-DM1 : March 2, 2019 : DISCUSSION  (Read 591444 times)

Offline Lars-J

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Number 3.
I’ll have two number 9s, a number 9 large, a number 6 with extra dip, a number 7, two number 45s, one with cheese, and a large soda.

+ extruudable SPAM
And Cargo Dragon uses the same SPAM filler method - but just like Dragon 2, it is more or less visible depending on light conditions:

And no, SPAM is not a joke, that is the name of the side-wall external insulation layer - SpaceX Proprietary Ablative Material. (unless I have the abbreviation wrong)
« Last Edit: 03/04/2019 10:47 pm by Lars-J »

Offline RoboGoofers

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A good view of nose cone open.
What are the yellow patches on the inside of the nose cone? I was guessing COB LEDs but they didn't light during docking.
« Last Edit: 03/05/2019 03:27 pm by RoboGoofers »

Offline w9gb

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Quote from: eriblo
Just to clarify: The capsule should pass within minutes of the ISS following the same ground track but will of course be much lower on the horizon, guesstimating about 1/4 the visibility radius unless someone knows better...
Based on current ISS orbit, it will pass over splashdown area 2-3 minutes before Crew Dragon.
At Splashdown (8:45 AM EST) on March 8th, ISS will be just off the east coast of Puerto Rico.
Pacific Northwest (Vancouver, Seattle, Calgary) should have ISS/Crew Dragon visibility, before sunrise.

The ISS ground track on March 8th will pass over (times for Zenith of pass)
Sioux Falls, SD (7:34 CST); Burlington, IA; Springfield, IL (7:36 CST);
Knoxville, TN (8:38 EST); Columbia, SC before Atlantic Ocean off Florida coast.
Look for Crew Dragon following about 2 minutes after ISS pass.
« Last Edit: 03/05/2019 04:24 pm by w9gb »

Offline crandles57

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Is it just me or does booster look bent on this image from
[https://twitter.com/julia_bergeron/status/1102924187067396096]

Offline HVM

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It is just bit tilted due heavy sea landing + used bit of the crush core in one of the legs.

No bending...
« Last Edit: 03/05/2019 11:39 pm by HVM »

Offline punder

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And no, SPAM is not a joke, that is the name of the side-wall external insulation layer - SpaceX Proprietary Ablative Material. (unless I have the abbreviation wrong)

Oh it is most certainly a joke from SpaceX! They picked the acronym very carefully.   8)

Online CraigLieb

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Was there any resolution to the Dragon cabin temperature concerns?
Question from the update thread ..
answer is obvious... the zero-g indicator is the Earth.
So... Global warming !
On the ground floor of the National Space Foundation... Colonize Mars!

Offline gtae07

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In one of the various threads I saw a reentry path that looks to go offshore and pass a little east of Savannah.  It’ll be morning and looking into the sun, but weather looks ok-ish for Friday and I actually have a decent view to the east from the building I work in.  Is there a realistic chance of seeing a reentry trail this late or are we in “supersonic but no plasma trail” territory?  I suspect the latter  :-\

Offline StuffOfInterest

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I wonder if the "zero g indicator" is going to come back down on the Dragon.  Based on all of the pictures in the orbital ops update thread, it looks to have been adopted by the crew as their new mascot.

Online Yellowstone10

I wonder if the "zero g indicator" is going to come back down on the Dragon.  Based on all of the pictures in the orbital ops update thread, it looks to have been adopted by the crew as their new mascot.

McClain referred to "[Earth's] busy week on @Space_Station" in a tweet, so I think it's coming back on Friday.

Offline joncz

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In one of the various threads I saw a reentry path that looks to go offshore and pass a little east of Savannah.  It’ll be morning and looking into the sun, but weather looks ok-ish for Friday and I actually have a decent view to the east from the building I work in.  Is there a realistic chance of seeing a reentry trail this late or are we in “supersonic but no plasma trail” territory?  I suspect the latter  :-\

I asked yesterday - https://twitter.com/JonCzerwinski/status/1103106467027185665 - waiting to see if I get any response.

Offline Spindog

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Is it just me or does booster look bent on this image from
[https://twitter.com/julia_bergeron/status/1102924187067396096]

I think it's an optical illusion caused by the angle of the unscorched white area that was covered by the landing  leg to the left. Made me look several times too.

Offline AstroMickey

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I may have missed a link somewhere, but what are the capsule recovery procedures for the Crew Dragon.  I've seen a lot videos and stories about the training being done for NASA's Orion capsule recovery procedures, but I don't recall seeing anything about how Spacex will recover Crew Dragon and the eventual astronaut occupants?

Offline mlindner

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Is it just me or does booster look bent on this image from
[https://twitter.com/julia_bergeron/status/1102924187067396096]

I think it's an optical illusion caused by the angle of the unscorched white area that was covered by the landing  leg to the left. Made me look several times too.

The booster doesn't look bent, but it's certainly leaning. I just measured it and it's leaning several degrees to the right.
LEO is the ocean, not an island (let alone a continent). We create cruise liners to ride the oceans, not artificial islands in the middle of them. We need a physical place, which has physical resources, to make our future out there.

Offline Norm38

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Reentry on Friday will be on a Descending Node, with Crew Dragon cutting across North America from Vancouver, British Columbia to Georgia in the pre- and post-dawn hours (depending on location) as she heads towards splashdown off the east coast of Florida.

Those under the flight path (the orange line in this image) might have the opportunity to see reentry if conditions are right.

(Image: GoISSWatch app)

I'm in Chicago.  Anyone have an idea how far from that line it will be visible?
I guess it'll be shrinking as it descends.  Passing below Chicago, maybe 20-30 miles up still?  So 200-300 miles either side?  Seems like it's way too far south for me to see anything.
« Last Edit: 03/06/2019 04:03 pm by Norm38 »

Offline HVM

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Crew is currently searching for the source of an odor, my guess is that it's dragon

Curious, what kind of odor?

Google translate:

"MOSCOW, March 5 - RIA News . After the arrival of the American unmanned spacecraft Dragon-2 on the ISS, the crew smelled alcohol, a source in the Russian rocket and space industry told RIA Novosti.
Isopropyl alcohol is a colorless liquid with a strong odor and a mild bitter taste. It is used in cosmetics, perfumery, household chemicals, medicine as an antiseptic. Moderately toxic, flammable. According to Russian GOST, the maximum permissible concentration of isopropyl alcohol vapor in the air is ten milligrams per cubic meter.
...
According to him, the concentration of alcohol in the atmosphere of the station on March 3 was about six milligrams per cubic meter, which did not exceed the permissible limits, but it could affect the operation of the equipment of the station. According to the instructions of the ground specialists, the crew switched on the air purification systems, as a result of which the alcohol concentration decreased to about two milligrams per cubic meter, the source added.
He noted that prior to the docking of the Dragon-2 spacecraft, the alcohol concentration in the atmosphere of the ISS was one tenth of a milligram per cubic meter."

https://ria.ru/20190305/1551566207.html

You must ventilate after cleaning...
« Last Edit: 03/06/2019 05:43 pm by HVM »

Online eriblo

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Reentry on Friday will be on a Descending Node, with Crew Dragon cutting across North America from Vancouver, British Columbia to Georgia in the pre- and post-dawn hours (depending on location) as she heads towards splashdown off the east coast of Florida.

Those under the flight path (the orange line in this image) might have the opportunity to see reentry if conditions are right.

(Image: GoISSWatch app)

I'm in Chicago.  Anyone have an idea how far from that line it will be visible?
I guess it'll be shrinking as it descends.  Passing below Chicago, maybe 20-30 miles up still?  So 200-300 miles either side?  Seems like it's way too far south for me to see anything.
I have not seen any Dragon landing profiles but if it had been a Soyus I think (after a quick look online) that some of the reentry would be visible from Chicago and it would still be about 50-60 km in altitude when passing the coastline. They both fly lifting reentries so there is some uncertainty (a Soyuz on a ballistic reentry can fall up to 600 km short, that would close to Columbia, SC...).

Offline punder

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Crew is currently searching for the source of an odor, my guess is that it's dragon

Curious, what kind of odor?

Google translate:

"MOSCOW, March 5 - RIA News . After the arrival of the American unmanned spacecraft Dragon-2 on the ISS, the crew smelled alcohol, a source in the Russian rocket and space industry told RIA Novosti.
Isopropyl alcohol is a colorless liquid with a strong odor and a mild bitter taste. It is used in cosmetics, perfumery, household chemicals, medicine as an antiseptic. Moderately toxic, flammable. According to Russian GOST, the maximum permissible concentration of isopropyl alcohol vapor in the air is ten milligrams per cubic meter.
...
According to him, the concentration of alcohol in the atmosphere of the station on March 3 was about six milligrams per cubic meter, which did not exceed the permissible limits, but it could affect the operation of the equipment of the station. According to the instructions of the ground specialists, the crew switched on the air purification systems, as a result of which the alcohol concentration decreased to about two milligrams per cubic meter, the source added.
He noted that prior to the docking of the Dragon-2 spacecraft, the alcohol concentration in the atmosphere of the ISS was one tenth of a milligram per cubic meter."

https://ria.ru/20190305/1551566207.html

You must ventilate after cleaning...

Punder translate: SpaceX sucks! We hate them! (sob) Elon Musk is a BIG FAT MEANIE!!!

Offline ChrisGebhardt

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Reentry on Friday will be on a Descending Node, with Crew Dragon cutting across North America from Vancouver, British Columbia to Georgia in the pre- and post-dawn hours (depending on location) as she heads towards splashdown off the east coast of Florida.

Those under the flight path (the orange line in this image) might have the opportunity to see reentry if conditions are right.

(Image: GoISSWatch app)

I'm in Chicago.  Anyone have an idea how far from that line it will be visible?
I guess it'll be shrinking as it descends.  Passing below Chicago, maybe 20-30 miles up still?  So 200-300 miles either side?  Seems like it's way too far south for me to see anything.
I have not seen any Dragon landing profiles but if it had been a Soyus I think (after a quick look online) that some of the reentry would be visible from Chicago and it would still be about 50-60 km in altitude when passing the coastline. They both fly lifting reentries so there is some uncertainty (a Soyuz on a ballistic reentry can fall up to 600 km short, that would close to Columbia, SC...).

You won't be able to see reentry from Chicago. Hang tight, though. I'm gathering it all together to post a "here's where you might be able to see the reentry and if you can't but live along the ground what you might expect" write up.

Crew is currently searching for the source of an odor, my guess is that it's dragon

Curious, what kind of odor?

Google translate:

"MOSCOW, March 5 - RIA News . After the arrival of the American unmanned spacecraft Dragon-2 on the ISS, the crew smelled alcohol, a source in the Russian rocket and space industry told RIA Novosti.
Isopropyl alcohol is a colorless liquid with a strong odor and a mild bitter taste. It is used in cosmetics, perfumery, household chemicals, medicine as an antiseptic. Moderately toxic, flammable. According to Russian GOST, the maximum permissible concentration of isopropyl alcohol vapor in the air is ten milligrams per cubic meter.
...
According to him, the concentration of alcohol in the atmosphere of the station on March 3 was about six milligrams per cubic meter, which did not exceed the permissible limits, but it could affect the operation of the equipment of the station. According to the instructions of the ground specialists, the crew switched on the air purification systems, as a result of which the alcohol concentration decreased to about two milligrams per cubic meter, the source added.
He noted that prior to the docking of the Dragon-2 spacecraft, the alcohol concentration in the atmosphere of the ISS was one tenth of a milligram per cubic meter."

https://ria.ru/20190305/1551566207.html

You must ventilate after cleaning...

Punder translate: SpaceX sucks! We hate them! (sob) Elon Musk is a BIG FAT MEANIE!!!

I can’t find the article that discussed it, but this has been an issue with the Cargo Dragon missions too.

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