ChiefsPlanet

ChiefsPlanet (https://www.chiefsplanet.com/BB/index.php)
-   Nzoner's Game Room (https://www.chiefsplanet.com/BB/forumdisplay.php?f=1)
-   -   Science Space Exploration megathread (https://www.chiefsplanet.com/BB/showthread.php?t=284057)

DaFace 12-06-2017 04:25 PM

<iframe src="https://www.facebook.com/plugins/post.php?href=https%3A%2F%2Fwww.facebook.com%2FSpaceX%2Fposts%2F10160219528035131&width=500" width="500" height="744" style="border:none;overflow:hidden" scrolling="no" frameborder="0" allowTransparency="true"></iframe>

eDave 12-06-2017 04:27 PM

Quote:

Originally Posted by Cornstock (Post 13252874)
A couple questions maybe y'all can answer that crossed my mind watching this:

Around 3:30 the guy announces that they are switching from one guy at the stick to the other. Why is it necessary to change who's steering it halfway through?

It might just be camera angles, but are they pretty much vertical at some points in that descent? Talk about coming in hot...

When the landing gear deployed, it seemed like the compartment doors were much thicker than standard wheel well door. Are they pressurized to keep the wheels from exploding in 0 pressure? Or are they solid rubber? Or are they inflated during the descent?

It's not the camera angle. It is thpretty steep and for most of it.

DaFace 12-06-2017 04:49 PM

Quote:

Originally Posted by Cornstock (Post 13252874)
A couple questions maybe y'all can answer that crossed my mind watching this:

Around 3:30 the guy announces that they are switching from one guy at the stick to the other. Why is it necessary to change who's steering it halfway through?

According to a random forum post:

http://www.collectspace.com/ubb/Foru...ML/000559.html

It's common for commanders to give the pilot control here and there just for practice. Not very exciting, I know.

Quote:

It might just be camera angles, but are they pretty much vertical at some points in that descent? Talk about coming in hot...
According to this article...

https://science.howstuffworks.com/space-shuttle7.htm

It comes in at a max angle of -20 degrees. Compare that to around -3 degrees for a commercial aircraft landing. That's far from vertical, and the camera angles probably exaggerate it, but it's definitely a steep rate.

Quote:

When the landing gear deployed, it seemed like the compartment doors were much thicker than standard wheel well door. Are they pressurized to keep the wheels from exploding in 0 pressure? Or are they solid rubber? Or are they inflated during the descent?
Here's some info on the Space Shuttle tires. In short, they're nitrogen-filled.

https://www.nasa.gov/aeroresearch/re...re-basic-facts

My guess is that they are plenty strong to be fine in a vacuum. The wheel doors are probably thicker just due to the amount of heat the shuttle has to handle on the way down.

FlintHillsChiefs 12-06-2017 05:38 PM

Quote:

Originally Posted by DaFace (Post 13266215)
According to a random forum post:

http://www.collectspace.com/ubb/Foru...ML/000559.html

It's common for commanders to give the pilot control here and there just for practice. Not very exciting, I know.



According to this article...

https://science.howstuffworks.com/space-shuttle7.htm

It comes in at a max angle of -20 degrees. Compare that to around -3 degrees for a commercial aircraft landing. That's far from vertical, and the camera angles probably exaggerate it, but it's definitely a steep rate.



Here's some info on the Space Shuttle tires. In short, they're nitrogen-filled.

https://www.nasa.gov/aeroresearch/re...re-basic-facts

My guess is that they are plenty strong to be fine in a vacuum. The wheel doors are probably thicker just due to the amount of heat the shuttle has to handle on the way down.

The steep descent angle is probably because the shuttle has a terrible glide ratio.

Cornstock 12-06-2017 11:04 PM

Quote:

Originally Posted by DaFace (Post 13266215)
According to a random forum post:

http://www.collectspace.com/ubb/Foru...ML/000559.html

It's common for commanders to give the pilot control here and there just for practice. Not very exciting, I know.



According to this article...

https://science.howstuffworks.com/space-shuttle7.htm

It comes in at a max angle of -20 degrees. Compare that to around -3 degrees for a commercial aircraft landing. That's far from vertical, and the camera angles probably exaggerate it, but it's definitely a steep rate.



Here's some info on the Space Shuttle tires. In short, they're nitrogen-filled.

https://www.nasa.gov/aeroresearch/re...re-basic-facts

My guess is that they are plenty strong to be fine in a vacuum. The wheel doors are probably thicker just due to the amount of heat the shuttle has to handle on the way down.

Great info! Thanks for hunting that down.

Donger 12-07-2017 11:15 AM

Quote:

Originally Posted by DaFace (Post 13252836)
Lots of things happening lately - I just haven't been keeping up. A few notable things:

-Zuma appears to be indefinitely on hold until they figure out their fairing issue (whatever it is).
-CRS-13 is on the clock for a week from now. This will be the first launch back at the repaired SLC-40 site that was damaged last year. Also, this will be the first time an ISS mission is launched on a previously-flown booster.
-Iridium-4 is coming up in about 3 weeks off the west coast.
-Falcon Heavy is pushed back to early January (but not a set date yet)

And on that note...

<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">Falcon Heavy to launch next month from Apollo 11 pad at the Cape. Will have double thrust of next largest rocket. Guaranteed to be exciting, one way or another.</p>&mdash; Elon Musk (@elonmusk) <a href="https://twitter.com/elonmusk/status/936781265675599873?ref_src=twsrc%5Etfw">December 2, 2017</a></blockquote>
<script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>

And I think he's serious... ROFL

<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">Payload will be my midnight cherry Tesla Roadster playing Space Oddity. Destination is Mars orbit. Will be in deep space for a billion years or so if it doesn’t blow up on ascent.</p>&mdash; Elon Musk (@elonmusk) <a href="https://twitter.com/elonmusk/status/936782477502246912?ref_src=twsrc%5Etfw">December 2, 2017</a></blockquote>
<script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>

YES!!! I can't wait for that...

DaFace 12-11-2017 10:52 AM

24-hour bump. Should be fun to see SLC-40 back in action if nothing else.

unlurking 12-11-2017 04:48 PM

Also marks the first time for reuse of a booster and a craft on the same mission.

DaFace 12-11-2017 07:36 PM

Almost looks like they didn't even clean this one off. Wonder if they're trying to make it 100% clear that this is a reused booster since there will be more press than usual. :)

https://i.imgur.com/6eSOymH.jpg

<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">Sooty is looking good on the pad! Set for launch tomorrow at 11:46:57 <a href="https://twitter.com/hashtag/CRS13?src=hash&amp;ref_src=twsrc%5Etfw">#CRS13</a> <a href="https://twitter.com/hashtag/spacex?src=hash&amp;ref_src=twsrc%5Etfw">#spacex</a> <a href="https://twitter.com/hashtag/falcon9?src=hash&amp;ref_src=twsrc%5Etfw">#falcon9</a> <a href="https://t.co/ukUTWHjYFY">pic.twitter.com/ukUTWHjYFY</a></p>&mdash; Craig Vander Galien (@Craig_VG) <a href="https://twitter.com/Craig_VG/status/940312789113065473?ref_src=twsrc%5Etfw">December 11, 2017</a></blockquote>
<script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>

unlurking 12-11-2017 07:42 PM

Previous boosters definitely looked cleaner before reuse, but I love the look!

DaFace 12-11-2017 08:51 PM

Bleh.

<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">Now targeting Dec. 13 for launch of CRS-13 from SLC-40 to allow for additional time for pre-launch ground systems checks.</p>&mdash; SpaceX (@SpaceX) <a href="https://twitter.com/SpaceX/status/940413416531025923?ref_src=twsrc%5Etfw">December 12, 2017</a></blockquote>
<script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>

Probably not surprising given that it's a "brand new" pad, but still sucks to have another delay.

GloryDayz 12-11-2017 10:42 PM

Quote:

Originally Posted by DaFace (Post 13277356)
Almost looks like they didn't even clean this one off. Wonder if they're trying to make it 100% clear that this is a reused booster since there will be more press than usual. :)

https://i.imgur.com/6eSOymH.jpg

<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">Sooty is looking good on the pad! Set for launch tomorrow at 11:46:57 <a href="https://twitter.com/hashtag/CRS13?src=hash&amp;ref_src=twsrc%5Etfw">#CRS13</a> <a href="https://twitter.com/hashtag/spacex?src=hash&amp;ref_src=twsrc%5Etfw">#spacex</a> <a href="https://twitter.com/hashtag/falcon9?src=hash&amp;ref_src=twsrc%5Etfw">#falcon9</a> <a href="https://t.co/ukUTWHjYFY">pic.twitter.com/ukUTWHjYFY</a></p>&mdash; Craig Vander Galien (@Craig_VG) <a href="https://twitter.com/Craig_VG/status/940312789113065473?ref_src=twsrc%5Etfw">December 11, 2017</a></blockquote>
<script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>

Have you seen the price of paint?!?! Heck I'm buying automotive paint to paint my son's hockey goalie mask, and it's like $90, so this space-grade stuff might sink the program!

Donger 12-13-2017 08:42 AM

Bump

DaFace 12-13-2017 09:42 AM

Delayed again. :sulk:

<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">Taking additional time for the team to conduct full inspections and cleanings due to detection of particles in 2nd stage fuel system. Now targeting CRS-13 launch from SLC-40 on Dec. 15. Next launch opportunity would be no earlier than late December.</p>&mdash; SpaceX (@SpaceX) <a href="https://twitter.com/SpaceX/status/940736321097572352?ref_src=twsrc%5Etfw">December 13, 2017</a></blockquote>
<script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>

Molitoth 12-13-2017 11:06 AM

I've been hiding under a rock apparently.

Last night I accidentally came across a documentary of Elon Musk on Bloomberg and the story of this guy kinda blew my mind. I had heard his name frequently but never had done any research into who he was.

This dude rules, and now I'm closely watching SpaceX, Tesla, and SolarCity.
GoGo Gadget Sustainable Technology.


All times are GMT -6. The time now is 11:04 AM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2024, vBulletin Solutions, Inc.