Was it the same one that scuppered the Orbital Sciences Corp. launch in October?
I suspect the work of evil Bond villains.
NASA’s shiny new space shuttle Orion has missed its launch window today, as countdown after countdown was called off amid a number of difficulties. Orion on the launch pad A boat in the red zone of the launch, high ground winds on more than one occasion and a fill and drain valve not closing properly kept the ground crew on …
They did do something with the wind gauge, they decided to ignore it. The automatic detector was taken offline and the meatsack on that console was going to do the monitoring if the 14:44 attempt had gone ahead.
As for the valves (two were sticking) they tried various things but I didn't hear them discuss your suggestion. Volunteers for the job might have been thin on the ground :-)
However, our troll/idiot/joker is correct. There's no way the Moon landings could be real. It's an established fact that the Moon is made of cheese. So where the rockets landed and took off, you'd get a fondue effect. As no astronauts were ever seen drinking unfeasibly vast quantities of wine while eating potatoes, charcuterie, bread and pickles - it can be firmly established that the moon-landings are a fake.
Unless the Moon is made of hallumi I suppose. You can hit that stuff with blowtorches, and it doesn't even bend, let alone melt...
Troll/idiot/joker, or maybe he or she has a different agenda to yours Spartacus? If this person is either a Troll, Idiot and or joker, then what does that make you for 'Replying' to their comment?
Why are you so keen to rubbish them? If their opinion is utter garbage then either 'Downvote' or do what most people do and just ignore them. If you do that then maybe they'll go away.
Troll/idiot/joker, or maybe he or she has a different agenda to yours Spartacus?
I have no agenda, my anonymous friend. I can't imagine many people do, as all we're doing is posting on the forums of a reasonably obscure online IT publication. I suppose timewasting might count as an agenda...
Why are you so keen to rubbish them?
Why not? Why would I post something on this forum at all? I guess to add to the gaiety of nations. Or out of boredom or a work-avoidance-strategy.
If their opinion is utter garbage then either 'Downvote' or do what most people do and just ignore them. If you do that then maybe they'll go away.
See above. Why post on here at all? I guess it was for the amusement of my fellow commentards. Also out of interest, as I've never seen such an odd argument put before. I've seen all the shadows being wrong / wavey flags / camera stuff before. That's not interesting. But I've never seen someone argue the moonlandings didn't happen because there's no Kennedy Space Centre on the moon. Yet every single one of these Orion articles has some variation of it. That's genuinely interesting.
Now I'm also interested by your motivation, for your slightly odd post. You could have ignored me, as you advised me. You could have used a username, to make it easier to reply. You could perhaps be the offended party, who I was somewhat dismissive of. Or someone leaping to their defence. Or a fellow believer in anti-moonlanding-conspiracy-nutjobbery. Who knows? What could be more interesting than the thoughts and beliefs of my fellow human beings?
"...Look at all that lovely infrastructure....huge metal towers, pylons, buildings etc. If they had all that on the Moon back in the sixties"
Which, of course, is all the proof we need to know that all those Cold War nuclear missiles were a complete hoax. All the Cold War money spent by nations to build SLBMs, IRBMs, and ICBMs able to operate from rough, unprepared woods and oceans was, in fact, probably spent on vast underground shelters used as sex resorts by national leaders.
These giant love bunkers in turn prove that Apollo was a hoax because by 1969 no engineers on the planet had any experience designing rockets to be launched with minimal field support.
The problem with your typical moon hoax conspiracy nut (or conspiracy nuts in general) is that a) they think they're smarter than everyone else, and b) they're actually so fucking stupid that they're too fucking stupid to realise just how fucking stupid they really are.
They all think they're Agent Mulder when they're really Jenny McCarthy
"Why would something this large suffer from the wind."
Eh? Because it's large. And it balances on its tip. You wouldn't want it to hit the tower on take off or gimbal-lock the engines while trying to correct for wind drift so that you'd have to then ask the range safety officer to turn it into an unscheduled fireworks display...
The Challenger disaster was caused, in part, by wind shear at high altitude just as the shuttle hit max aerodynamic load, this caused the SRB to flex more than usual and the already degraded o-rings to fail completely. I'd guess that's still something they want to avoid as the rocket bodies probably resist lateral loads poorly to avoid excess mass.
So it appears that there are 2 schools of thought to my simple question.
1 : Ground level wind - It would take a might wind to move a mass of 21 tonnes and as I mentioned I do nto believe that hurricane forces were in effect.
2 : High altitude wind : Ok this I can understand more but surely by the time it reaches that altitude it already has gained a lot of momentum. I would therefore have consider that the wind would have little effect.
I could be and probably am wrong on both hypotheses.
As for the downvoters and itchy fingers, believe me I have far more downvotes than many have upvotes... My skin is thick, it has to be, I am not intelligent enough to survive by any others means.
1. Considering ground level wind was mentioned, this is probably what was up.
As for the thing being 21 tons, fair enough, but that doesn't make it hard to move. I have moved 10 ton boats on my own and I am not a strong guy. In water or air, you don't get the friction with the ground and things are very different from what intuition might tell you.
The basic question is, can the wind move the rocket sideways by the couple of meters clearance it has from the tower before the tail of the rocket clears the top of the tower?
Alternatively, can it topple the rocket before it clears the top of the tower? (Once you're clear, you can lean into the wind; while you still next to the tower, you're pretty much restricted to engine gimballing.)
Neither of these would take hurricanes. Just a good solid breeze against that huge sail, err, rocket.
Consider that a 40 knot crosswind is reason not to land most aircraft and those things are more controllable than rockets.
You just have to remember that rockets are very tall, and very thin. And most of the stuff you control them with is right at the bottom. It's hard enough to get them to go in a straight line anyway, without adding even more factors that make them unstable. Balance a pencil on its end on your finger, try and hold that upright. Now blow on it...
Winds in the upper atmosphere can regularly hit over 100 mph as well, even on calm days at surface level. This is why trans-Atlantic flight times might vary by over an hour (if the jetstream is going really fast). That's a lot of force exerted on a rocket, which it has to correct for. Although in this case it was apparently low altitude wind.
Well Khaptain, your little question has certainly 'ruffled' some commentard feathers. Would have thought that wind would be a problem on a less aerodynamic lifting body. Would have thought that the rockets slippy-slidey shape would've allowed it to cut through the air cleanly.
THE BLACKPOOL SOLUTION...
To stop the wind spoiling our time on the Pleasure Beach our dad used to put up a 'wind break'. Could this humble technology be the solution to NASA's wind problem?
I'm not talking about a few metres of stripey material, but someting akin to what they constructed the 'Millenium Dome' out of. They could enclose the launch site with this structure and prevent costly delays due to the problem of high winds at ground level.
"1 : Ground level wind - It would take a might wind to move a mass of 21 tonnes and as I mentioned I do nto believe that hurricane forces were in effect."
Isn't the Delta IV Heavy 733 tons at the launch pad? The ~20-ton Orion payload isn't released until well above the atmosphere.
Here's a simple little experiment that'll give you an idea of why wind's a problem to rocket launches.
Get a broom, and balance it on your finger vertically, brush end up. This is similar to how a rocket balances on its thrust.
Now try this outside on a breezy day... much harder!
NASA has done extensive research into this. For the shuttle for instance it was:
"Wind: Tanking will not begin if the wind is observed or forecast to exceed 42 knots for the next three hour period.
For launch the wind constraints at the launch pad will vary slightly for each mission. The peak wind speed allowable is 30 knots. However, when the wind direction is between 100 degrees and 260 degrees, the peak speed varies for each mission and may be as low as 24 knots."
If you want to read a full study on wind effects (this one is from 1966, 435 pages) go here: http://ntrs.nasa.gov/search.jsp?R=19660022936
"Ground wind load effects on launch vehicles and circular cylinders - conference "
You will see that there are a couple of issues with wind, including nearby objects, vibration, trajectory of parts falling back to earth, etc. It also has a nice pic of one of their test models being blown over from its platform in a storm.
Reminds me of a story I read many years ago -
An F-4 Phantom came across a B-52 somewhere over the States and started to show off doing rolls etc. After a minute or two, he flew along side the B-52 and radioed him saying 'I bet you can't do that'. The B-52 came back with 'Ok, we bet you can't do this!' The B-52 flew on straight and level.
After a couple of minutes the F-4 jock radioed back 'Do what? nothing has happened?'
At which the B-52 replied 'We have just shut down 2 engines'
It's a three stage event (If I remember it correctly)
1) Orion hits the top of the atmosphere @20,000 mph
2) It is slowed down to 300mph approx by atmospheric drag
3) 2 small chutes are deployed to slow it to 150mph and are released
4) 3 drogue chutes are deployed which drag out the main chutes
Hence 8 chutes!
"8 parachutes = one tangled mess"
They're not all out at once.
Big parachutes, like the main chutes of the Orion capsule, sometimes need some assistance to be pulled out to a correct inflation distance from the payload they're trying to soft land. So, smaller chutes are used. This particular process used by Orion achieves the following:
1) Stabilizing the capsule in the correct orientation for main parachute deployment (with the drogues opening in a few steps to avoid a hard shock on the capsule)
2) Small chutes help pull out the main ones
3) Finally the main chutes deploy in a few steps to, again, avoid a hard shock.
"Overcautious Automated Scripts" should also be in your headline. "Hold, Hold, Hold," was called out twice this morning during two separate 4 minute windows because of winds a bit above maximum. The LD actually called for turning off that part of the script system and manually making the wind decision, before they called the third "Hold, Hold, Hold" for the "faulty" valves. Who knows if the valves would have been sensed to be "faulty" if the wind decisions hadn't caused everything to have to be spooled down and spooled back up. Just sayin'...
2/1: Perfect launch, first time of asking.
10/1: Minor fault, small delay, then flawless launch.
100/1: Countdown delayed again!, because of leaves on the line.
1,000/1: NASA fess-up and admit the space programme has been one big con.
10,000/1: The Human race's reaction to the truth is to just shrug their shoulders and carry on with their lives.
It's supposed to be re-usable. Although it's cheating, as they throw the rocket away. Then again, the shuttle itself threw two rockets and a honking great tank away on every launch. Well I know they re-used bits of the SRBs, but not with the hoped for success.
SpaceX are getting pretty shuttley though. They've designed a re-usable capsule, and the first stage of one of their rockets is doing a test landing next week.
... queue music!
There was a weird little German Sci-Fi TV show called "Die fantastischen Abenteuer des Raumschiffes Orion". It was mostly famous for having common household items as sci-fi instruments.
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