Author Topic: SpaceX Dragon 2 Updates and Discussion - Thread 2  (Read 773644 times)

Offline DavidH

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Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #340 on: 03/08/2017 10:31 pm »
Ok, two are wearing masks and other two not. Anyone know why?
Facial hair.
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Keep your posts short if you want them to be read.

Offline IainMcClatchie

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Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #341 on: 03/08/2017 10:35 pm »
Two two guys without masks both have microphones.  The other two don't.

Offline Kansan52

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Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #342 on: 03/08/2017 11:07 pm »
Two two guys without masks both have microphones.  The other two don't.

Very likely. Also, one did seem to be covering facial hair. It may be that simple.

Online Johnnyhinbos

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Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #343 on: 03/09/2017 02:06 am »
There's plenty of detail to be seen in these three images that accompany the article:

Ha! I wonder if the smoke detector in the second image will be standard :p

That's an interesting look through the glass floor in the third image. Lots 'o bits under there. If you compare the floors in the second and third images, they used a clear floor material during testing but it looks quite old and scratched. A good excuse for a slick branded replacement for the official photo shoot.
It's for when lunar astronauts Kanye and K Kardashian attempt to take an e-cig break after the mondo instagram selfie extravaganza while shooting the "backside" of the moon. You know, because that's where we're at...
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Offline ScottMC

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Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #344 on: 03/19/2017 05:25 pm »
NASA TV: Release of SpaceX Dragon Capsule From The ISS

https://www.youtube.com/watch?v=p3aREIoaD6A?t=001



Heard the following comments during the Dragon unberthing operations, regarding a 90 minute test performed by Dragon in preparation for crew Dragon.  The comment is located between 1:52 and 2:47 in the video linked above.

Quote from: NASA TV Commentator
Engineers called (for) an IDA selfie.  Actually manoeuvring Dragon in front of the future docking port of the Commercial Crew vehicles.  The Commercial Crew vehicles that will be carrying astronauts from the United States and other partner agencies launching from the United States in the future.  Dragon using its thermal images and LIDAR just to help better understand the reflective environment of that IDA, basically a test to acquire some data that will be used for the future crewed Dragon during what's known as its proximity ops.  Those close in operations right before actual docking... and that took about 90 minutes.

Edit: video was trimmed, so time stamp has changed
« Last Edit: 03/19/2017 10:08 pm by ScottMC »

Online Comga

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Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #345 on: 03/19/2017 09:28 pm »
NASA TV: Release of SpaceX Dragon Capsule From The ISS

Heard the following comments during the Dragon unberthing operations, regarding a 90 minute test performed by Dragon in preparation for crew Dragon.  The comment is located between 6:28 and 7:10 in the video linked above.

Quote from: NASA TV Commentator
Engineers called (for) an IDA selfie.  Actually manoeuvring Dragon in front of the future docking port of the Commercial Crew vehicles.  The Commercial Crew vehicles that will be carrying astronauts from the United States and other partner agencies launching from the United States in the future.  Dragon using its thermal images and LIDAR just to help better understand the reflective environment of that IDA, basically a test to acquire some data that will be used for the future crewed Dragon during what's known as its proximity ops.  Those close in operations right before actual docking... and that took about 90 minutes.

Can anyone explain this?
("IDA selfie"?  ::)   Not really....)
The IDA is on the forward port.
These observations need to be done at short range, well within the Keep Out Sphere.
In the post-release video we see the Dragon retreating to nadir.
It does not seem like these observations were performed this morning.

It's a great idea because there are some details in the IDA spec that just aren't correct.  There are theoretical values that need to be measured by flight sensors before being used to guide docking.
What kind of wastrels would dump a perfectly good booster in the ocean after just one use?

Offline ScottMC

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Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #346 on: 03/19/2017 10:04 pm »
NASA TV: Release of SpaceX Dragon Capsule From The ISS

Heard the following comments during the Dragon unberthing operations, regarding a 90 minute test performed by Dragon in preparation for crew Dragon.  The comment is located between 6:28 and 7:10 in the video linked above.

Quote from: NASA TV Commentator
Engineers called (for) an IDA selfie.  Actually manoeuvring Dragon in front of the future docking port of the Commercial Crew vehicles.  The Commercial Crew vehicles that will be carrying astronauts from the United States and other partner agencies launching from the United States in the future.  Dragon using its thermal images and LIDAR just to help better understand the reflective environment of that IDA, basically a test to acquire some data that will be used for the future crewed Dragon during what's known as its proximity ops.  Those close in operations right before actual docking... and that took about 90 minutes.

Can anyone explain this?
("IDA selfie"?  ::)   Not really....)
The IDA is on the forward port.
These observations need to be done at short range, well within the Keep Out Sphere.
In the post-release video we see the Dragon retreating to nadir.
It does not seem like these observations were performed this morning.

It's a great idea because there are some details in the IDA spec that just aren't correct.  There are theoretical values that need to be measured by flight sensors before being used to guide docking.

I stopped transcribing a little too soon.  He carried on to say...

Quote from: NASA TV Commentator
... and that took about 90 minutes, and then once that was complete ground controllers again commanded the Canadarm2 which is still holding Dragon into its release attitude where it has been sitting for the last several hours.

My understanding is that the Canadarm2 was used as a selfie stick and Dragon was the camera used to take various "photos" of the IDA.

Edit: Formatting
« Last Edit: 03/19/2017 10:18 pm by ScottMC »

Online Johnnyhinbos

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Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #347 on: 03/20/2017 01:14 am »
I thought this was the Dragon 2 thread?
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Offline Robotbeat

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Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #348 on: 03/20/2017 01:27 am »
I thought this was the Dragon 2 thread?
The previous post is relevant to Dragon 2, since it's basically testing out how the Dragon sensors will work.
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Online Comga

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Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #349 on: 03/20/2017 03:37 am »
NASA TV: Release of SpaceX Dragon Capsule From The ISS

Heard the following comments during the Dragon unberthing operations, regarding a 90 minute test performed by Dragon in preparation for crew Dragon.  The comment is located between 6:28 and 7:10 in the video linked above.

Quote from: NASA TV Commentator
Engineers called (for) an IDA selfie.  Actually manoeuvring Dragon in front of the future docking port of the Commercial Crew vehicles.  The Commercial Crew vehicles that will be carrying astronauts from the United States and other partner agencies launching from the United States in the future.  Dragon using its thermal images and LIDAR just to help better understand the reflective environment of that IDA, basically a test to acquire some data that will be used for the future crewed Dragon during what's known as its proximity ops.  Those close in operations right before actual docking... and that took about 90 minutes, and then once that was complete ground controllers again commanded the Canadarm2 which is still holding Dragon into its release attitude where it has been sitting for the last several hours..

My understanding is that the Canadarm2 was used as a selfie stick and Dragon was the camera used to take various "photos" of the IDA.

Ah!  Forget most of my earlier post.
It's still a great idea because there are some details in the IDA spec that just aren't correct.  There are theoretical values that need to be measured by flight sensors before being used to guide docking.
Now they have real data.
I assume this was done with the standard SpaceX rendezvous lidar in the bay near the grapple fixture.
How far away from the IDA can the Canadarm hold a Dragon?
What kind of wastrels would dump a perfectly good booster in the ocean after just one use?

Offline jfallen

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Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #350 on: 03/24/2017 10:59 am »
Anything noticed on the new Dragon 2 photos circling around on social media?   Are these pictures of a completed Dragon 2, or old pictures of a mock-up?  It also looks like one of the photos has a glimpse of a space suit.  Has anyone else seen these?  I'll try to find a link.

Found a link:
http://www.nbcnews.com/mach/science/look-inside-spacex-capsule-may-take-two-beyond-moon-n728336?cid=sm_npd_nn_fb_mc
« Last Edit: 03/24/2017 11:02 am by jfallen »

Offline Ben the Space Brit

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Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #351 on: 03/24/2017 11:29 am »
If it's the same vehicle that Musk introduced at the roll-out presser, she's been refitted inside. The main console has been altered (for example, the single central manual attitude control stick has been removed) and the interior has been fitted out with white formed plastic replacing the corrugated aluminium finish she had at the presser.
« Last Edit: 03/24/2017 11:29 am by Ben the Space Brit »
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Offline Robotbeat

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Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #352 on: 03/24/2017 11:37 am »
Machined isogrid, not corrugated. #nitpick
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Offline ethan829

Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #353 on: 03/24/2017 11:44 am »
Anything noticed on the new Dragon 2 photos circling around on social media?   Are these pictures of a completed Dragon 2, or old pictures of a mock-up?  It also looks like one of the photos has a glimpse of a space suit.  Has anyone else seen these?  I'll try to find a link.

Found a link:
http://www.nbcnews.com/mach/science/look-inside-spacex-capsule-may-take-two-beyond-moon-n728336?cid=sm_npd_nn_fb_mc

They appear to be the same photos posted to SpaceX's flickr page in 2015.
https://www.flickr.com/photos/spacex/20683882494/

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Offline eric_astro

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Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #355 on: 04/07/2017 10:19 pm »
Going from the Shuttle to a capsule (with a launch escape system/conservative thermal protection), and NASA's calculations show they can't meet a 1 in 200 LOC benchmark? I've read  threads on this site questioning how accurate their MMOD estimates are (compare the almost 50 years of Soyuz operations).

Offline eric_astro

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Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #356 on: 04/07/2017 10:46 pm »
What do these loss of crew benchmarks mean for the viability of space tourism?

Offline punder

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Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #357 on: 04/07/2017 11:04 pm »
What do these loss of crew benchmarks mean for the viability of space tourism?

People pay up up to six figures for an Everest ascent, while facing a 1 in 25 "LOC."

Offline meekGee

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Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #358 on: 04/07/2017 11:11 pm »
Going from the Shuttle to a capsule (with a launch escape system/conservative thermal protection), and NASA's calculations show they can't meet a 1 in 200 LOC benchmark? I've read  threads on this site questioning how accurate their MMOD estimates are (compare the almost 50 years of Soyuz operations).

I've always considered the very idea ludicrous. It's not just the design, it's the myriad ways in which the flying hardware can deviate from the design (so incorporating the "known unknowns", and even the "unknown unknowns")

And reality proves just how "inaccurate" these figures are.
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Online Comga

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Re: SpaceX Dragon 2 Updates and Discussion - Thread 2
« Reply #359 on: 04/08/2017 03:30 am »
Quote
Progress over the last few months and revealed that, while the timeline is tight, the two companies are on track for their scheduled crew demo flights of Dragon and Starliner in 2018.

As stated later, this means that it's not physically impossible to meet the current schedule but highly unlikely.

And I agree with the posts above. The MMOD fear seems overblown. There is excellent data from twenty years with the ISS. Even with the much greater area, has there ever been an MMOD strike on the ISS that threatened pressure containment or vital systems?

Cue the ultra-safe and MMOD impervious Soyuz.
At least Boeing wins either way.
What kind of wastrels would dump a perfectly good booster in the ocean after just one use?

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