Safe Landing For Space Shuttle Discovery 106
dylanduck writes "Discovery is back safe and sound, despite minor problems with a leaky power unit and a last minute change of approach direction to the runway. The mission tested some post-Columbia safety changes, and also set up the space station for future construction. But in some ways, the tough job starts now - NASA has just 40 days or so to get Atlantis up."
Nice (Score:5, Informative)
Welcome back! (Score:3, Funny)
Space shuttle pilot would not be the life for me!
Re:Welcome back! (Score:4, Informative)
Re:Welcome back! (Score:2)
How do we service it then? Can the CEV do it?
Will there be cries to ressurect the shuttle to service it again in 2015 or so?
Or do we have a last fix and then let it decay in its orbit...
Shame we can't rescue it like they origonally planned:
http://en.wikipedia.org/wiki/STS-144 [wikipedia.org]
Although it would be an irony if the mission so save hubble destroyed a space shuttle...
Re:Welcome back! (Score:2)
Nothing, they'll keep using it as long as they can, and with reentry possibly as late as 2030 that could be a good long time.
There is the possibility of robotic service missions, should we decide to service it. It's doubtful that the CEV could be used to service it, certainly the CEV is not going to have anything like the Canadarm to assist.
Re:Welcome back! (Score:2, Funny)
Unfortunatley, I'm fat, blind, and my flying experience is limited to dumping quarters into Afterburner when I was a kid.
If NASA ever needs someone to do barrel rolls and shoot lots of missiles, maybe then they'll invite me along.
Re:Welcome back! (Score:1)
Re:Welcome back! (Score:2)
Re:Welcome back! (Score:1)
Re:Welcome back! (Score:2)
Re:Welcome back! (Score:2)
Re:Welcome back! (Score:1)
that is not the only thing they do. there would be no point in making such huge investments if astronauts just went for a long drive around the planet. Different experiments are conducted once the astronauts reach up there. The complexity of these experiments has also increased with time. that is true no matter when u were born...
Re:Welcome back! (Score:3, Funny)
Bah! The Stargate team only had a matter of hours to get Atlantis up before they drowned, and they managed just fine. NASA should take a page out of their book.
Re:Welcome back! (Score:2)
Just curious: what are the biggest projects that the ISS has completed? I have not heard much about it.
Good news indeed (Score:5, Interesting)
Re:Good news indeed (Score:5, Informative)
Re:Good news indeed (Score:3, Interesting)
Really? That's pretty bad news for all these space-tourism schemes. No way in hell I'm taking a vacation where there's a one-in-fifty chance of not ever coming back. It would be safer to take a vacation in Iraq.
Re:Good news indeed (Score:2)
Too late. You think the nation went absolutely bonkers when a shuttle and 7 people were killed? How about when the 2050 Moon Shuttle snuffs 1,000 on liftoff and wipes out most of a city?
Re:Good news indeed (Score:3, Insightful)
Re:Good news indeed (Score:4, Informative)
The catstrophic failure rate for planes is absolutely miniscule.
So you and I know it, but there's a lot of people out there who are scared to fly, but not scared to drive P.O.S. cars with bad brakes and bald tires in the pouring rain during rush hour.
Statistics don't matter to some people - but a large scale emotionally charged event does.
Re:Good news indeed (Score:2)
SO homany mils does the space shuttle fly between take off and landing? how much for commercial aircraft?
Bu the example is meaningliess becasue the different in conditions id too significant for any real comparison.
Re:Good news indeed (Score:5, Insightful)
"Space exploration is dangerous"
Put on roller-skates, all your winter clothing, welding goggles, motorcycle helmet, then strap on fifty pound bags of cement until you can barely walk, and crossing the street is dangerous.
While I have a great deal of respect for the people who fly the thing -- astronauts, controllers, all -- the shuttle is a set of fatal compromises driven by budget and politics. The shuttle has done more to hold space travel back than any other spaceflight program. It needs to go.
I'm hoping for a dropped wrench in the VAB -- no lives lost, but we lose another shuttle to something mildly spectacular. That would put a thankful end to the program, whereupon we could start spending the money where it counts: Unmanned programs, and launch vehicles that don't suck.
(I used to be a big shuttle fan until I realized how much it was costing us).
Re:Good news indeed (Score:2, Redundant)
Just build a spacedock first and we can start focusing on vehicles that don't need a re-entry heat shield, huge engines, or anywhere close to the same structural itegrity (in space, atmospheric pressure is zero)
Re:Good news indeed (Score:3, Insightful)
Re:Good news indeed (Score:1, Funny)
Re:Good news indeed (Score:4, Funny)
Re:Good news indeed (Score:2)
Someone else pointed out the flaw in your design, but I think you're on to the right idea. I think a spaceport is a great idea. Ferry cargo and people up there separately: use heavy lift rockets for the cargo, like how we launch most satellites now, an
Re:Good news indeed (Score:3, Informative)
The idea of a "spaceport" is hardly new. In fact, it was proposed by none other than Werner Von Braun as his preferred method of getting to the Moon. Had it been built, there would have been real infrastructure for continued Lunar excursions rather than the glory missions we now know as Apollo, and many more than 12 men would have been able to walk on the Moon in the 20th Century, with only another dozen getting into circumlunar orbit. And it would have been much "cheaper" to send
Re:Good news indeed (Score:2)
LEO orbut ~ 90 minutes.
So a large tower would not get you orbital velocity at LEO. "Atmospheric and gravity drag associated with launch typically add 1,500-2,000 m/s to the delta-V required to reach normal LEO orbital velocity of 7,800 m/s." So a LEO tower would help but you need to get to GEO before your orbital velocity is "free".
Re:Good news indeed (Score:2)
The amount of delta-vee that must be compensated for through drag and overcoming gravity is really just a matter of the flight profile, and somewhat due to the aerodynamics of the spacecraft. Better engineering is really all that is needed to reduce that number, al
Re:Good news indeed (Score:2)
Somehow, you didn't think this all the way through.
First off, you want a good structural integrity. Humans might want to breathe on the inside of this thing, and you'd want to maintain normal atmospheric conditions, right?
Secondly, debris as small as a piece of dust moving very fast (thousands of feet per second) would make you want to have some extra structural stability. If you make it as thin as you can get away with,
Re:Good news indeed (Score:2)
Re:Good news indeed (Score:2)
With "only" two failures out of over 100 missions, you are statistically correct, but I find the idea of 20 more shuttle missions worriesome.
kill the white elephant (Score:1)
Re:Good news indeed (Score:2)
Un-Manned program can not so what the shuttle does.
"Put on roller-skates, all your winter clothing, welding goggles, motorcycle helmet, then strap on fifty pound bags of cement until you can barely walk, and crossing the street is dangerous."
what is your point here? that somehow space would be less dangerous somehow?
The shuttle does not cost us a lot of money for what it does.
Re:Good news indeed (Score:2)
Exactly, for the price of a single shuttle mission you can build, launch and operate for at least 90 days no less that 4 Mars rovers.
2% is a meaningless number (Score:5, Insightful)
The 2% number might mean something if we didn't need the main piece back. As such, that number is only good for people who love to toss numbers around without including the context of them
Re:2% is a meaningless number (Score:5, Insightful)
Re:2% is a meaningless number (Score:3, Interesting)
You have to be kidding. (Score:3, Interesting)
Shivetya is right. The reason for the ultraconservative behavior with regards to NASA is because they can't afford another failure until the CEV is ready to fly. It would very likely result in the termination of t
Re:2% is a meaningless number (Score:2)
Re:2% is a meaningless number (Score:2)
This is both true and false... Endeavour could be built because a) there was most of an airframe sitting around in storage as a 'spare' and b) it was close enough to the original construction date that the logistical and manufacturing experience pipeline still worked.
Niether was true after the loss of Columbia.
Re:2% is a meaningless number (Score:2)
Actually 'a' is certainly still true: Enterprise (the glide and landing test vehicle) still exists. Originally it was to be refitted for orbital use after Columbia was built, instead Challenger
Re:2% is a meaningless number (Score:2)
Certainly Enterprise still exists - but it's not a spaceworthy airframe.
Re:2% is a meaningless number (Score:2)
There is nothing fundamental preventing production from being resumed apart from cost.
Re:2% is a meaningless number (Score:2)
yes, if you wish to paint it in the most simplified, childish, black-and-white, terms possible. The problem is, the real world is rather messier and decidely not black-and-white.
Ah, this explains much. You prefer soundbites and urban legends over facts, reality, and education. You can't be bothered.
Re:2% is a meaningless number (Score:2)
Re:2% is a meaningless number (Score:2)
Re:2% is a meaningless number (Score:1)
The first shuttle experimental shuttle flight was in August 1977; the first flight with astronauts aboard was in April 1981; and the first non-R&D flight was in November 1982. There were no flights between February 1986 and August 1988 inclusive, and the last regularly scheduled flight (until now) was in February 2003.
This gives a range of one vehicle lost every 9 years (1982-1986, 1988-2003) to one vehicle lost every 13 years (1977-2003).
Just because there were two shut
Re:Good news indeed (Score:2)
I completely agree, except that we've got to be a little cautious or else we'll run out of shuttles -- we've only got three working ones left, you know!
The game is not over (Score:2)
Actually [cnn.com] it is advertised as 1%. I have pointed out [slashdot.org] that over the life of the program of 17 flights the risk of losing a shuttle is about the same as the risk of losing a game of Russian Roulette.
Re:Good news indeed (Score:2)
No, we have a 2% catastrophic failure rate. Shuttles have had issues before that have caused mission aborts, although not causing loss of life. For example, when a piece of debris hit one of the windows. Maybe not a failure per se, but it sure cut the mission short because of the concern. There have been numerous design flaws (search for fuel line cavitation for one) that plagued early shuttle flights. Some of these malfunctions caused by the s
Re:Good news indeed (Score:5, Insightful)
Re:Good news indeed (Score:2)
"old" airframes (Score:3, Informative)
Re:Good news indeed (Score:5, Interesting)
Shuttle is successful (Score:5, Insightful)
Oh? The scientific experiments? We forgot about those. Maybe next time.
Re:Shuttle is successful (Score:2)
Nice piece of sarcasm, but you're a bit off base. Firstly, this mission had significant goals beyond testing new safety techniques - it delivered 28000 pounds of equipment and supplies to the ISS and also performed necessary repair and preparation for further ISS construction. Secondly, it's unlikely much scientific experimentation of
Congratulations! (Score:4, Interesting)
Congrats (Score:5, Insightful)
Re:Congrats (Score:1)
Atlantis (Score:5, Funny)
post-CAIB mission over (Score:5, Interesting)
In the next flight, the shuttle program resumes the construction of the ISS (not just delivery of the supplies and take back some garbages). So until the next mission is complete, I wouldn't say that we are back on track with this mission.
It's good to have her back safely, nontheless.
...the tough job starts now... (Score:5, Informative)
Not really... The other orbiters are processed in separate buildings, by separate groups of technicians.
After Columbia, each flight requires a 'backup' orbiter be available to rescue the crew, should an emergency arise, so Atlantis is already nearly flight-ready.
The processing of Atlantis and the training of the next crew has been underway for quite some time.
It's not like KSC can only process one orbiter at a time...
Re:...the tough job starts now... (Score:2)
What's Endeavour up to?
Beautiful landing today; sure, it's expensive, and maybe a technological dead end, but that thing was in orbit and an hour later it landed. On wheels. I stayed up all night to watch STS-1 take off, and it still hasn't become mundane.
Re:...the tough job starts now... (Score:2)
Fun Fact! (Score:5, Funny)
Re:Fun Fact! (Score:4, Funny)
Re:Fun Fact! (Score:1)
Orbital Decay? (Score:4, Interesting)
definitely (Score:5, Informative)
Re:definitely (Score:2)
The shuttle reboosts of ISS are considered a bonus, ISS does not depend on them. They are not required (and won't be post shuttle retirement in 2010 - the ISS program will continue until at least 2014 and probably longer without shuttle reboosts).
Re:definitely (Score:2)
Re:Orbital Decay? (Score:3, Informative)
We are approaching another Solar minimum. It is a good thing since Earth's atmosphere doesn't puff up too much during the minimum period, hence reducing the level of drag onto the ISS (hence less decay in its orbit).
Re:Orbital Decay? (Score:5, Informative)
The change in the orbit from the docking itself is negligible (since the shuttle and station are in essentially the same orbit at docking - the closing rate at docking is ~ 0.1 feet/second).
That being said, the shuttle is occasionally used to reboost the Space Station by using up the excess shuttle propellant onboard. Additionally, in certain attitudes when the shutte is in attitude control the attitude control jets just happen to be pointed the correct direction to boost it slightly as well.
This is all secondary to the Progress resupply ships, which are the main mode of performing reboosts.
Re:Orbital Decay? (Score:2)
This [wikipedia.org] seems to suggest (last paragraph) that ATV and Progress is used for the reboost. However this [shuttlepresskit.com] mentions a "ISS reboost if adequate propellant" in 2001
A great way to start the day. (Score:1)
Re:A great way to start the day. (Score:2)
Still have an AP "nighttime landing" photo of the previous mission as my desktop wallpaper,...
A good day. (Score:2)
Journaists and public perception (Score:4, Insightful)
Re:Journaists and public perception (Score:2, Interesting)
Re:Journaists and public perception (Score:3, Funny)
Re:Journaists and public perception (Score:2)
And it's funny that the GP poster would complain about not enough technical details and too much human interest in the shuttle launches, I remembebr being annoyed with TV coverage of the war in Iraq for the oppisite reason. All the news channels had long-winded technical overviews of the
Re:Journaists and public perception (Score:1)
The FOAM is the TERRORIST! STOP THE FOAM NOW! (Score:2)
Re:Journaists and public perception (Score:2)
Even now it gives me an irrational urge to destroy the television.
More to the parent's point (and I'd trust Mart
Re:Journaists and public perception (Score:2)
I know exactly what you are talking about!
This is great news (Score:1)
One or two successful missions != Safe Shuttle (Score:3, Informative)
I do hope that not only future Shuttle missions, but also future NASA manned programs are run much differently and to much more rigorous standards.
Re:One or two successful missions != Safe Shuttle (Score:2)