Showing posts with label Atlantis. Show all posts
Showing posts with label Atlantis. Show all posts

21 July 2011

Shuttle slips into history

The iconic soul and heart of the US space programme for the past three decades slipped gracefully into history this morning.

Space Shuttle Atlantis swept into the Kennedy Space Center (KSC) making a poignant touchdown on a dark runway just before sunrise at 0557 local time.

Despite the dark pre-dawn skies over Florida large crowds came out to try to glimpse Atlantis as it made its historic return from orbit.

Its de-orbit track brought the orbiter across central Florida and then over Titusville before a hard bank to the left put the vehicle on a line to Runway 15 at KSC.



Touch-down marked a moment of high emotion for the local region - not least because it will trigger a big lay-off of contractor staff. Several thousand involved in Shuttle operations will lose their jobs within days.

Launching people into space is a potent symbol of technological and engineering prowess - but for the Space Shuttle programme it was the pre-dawn landing of Atlantis that truly signalled the end.

"When the wheels stopped on the runway, the displays went blank and the orbiter was unpowered for the final time there was a rush of emotion," said commander Chris ‘Fergie' Fergueson after stepping from the orbiter.

"That was the moment when we all finally realised that it's all over, the crowning jewel of our space programme.

"The Space Shuttle changed the way we view the world and it changed the way we view the Universe."


10 July 2011

A jewel of brightness

If there could be a downside to standing near the countdown clock at KSC to witness a launch from the closest point possible - a fraction over three miles - then it is because they no longer broadcast the launch commentary over the PA system.

There are probably good reasons, like the fact that it would upset all the TV companies doing their live broadcasts from the back of the site.

So, we have only the countdown clock as our means of assessing the state of progress and to mark the passage of time towards launch.

When 00:08:59 suddenly appears after the final scheduled ‘hold’ at t-minus nine minutes you know things are getting closer to the grande finale.

There’s excited chatter and people begin shouting out the numbers as the time clicks closer to zero - two minutes and counting, one minute... The excitement and tension is spilling out.

And then we stare in disbelief. Just as it seemed Atlantis had beaten the odds the countdown clock freezes. Cries of dismay - what can have happened at such a late stage? Surely that’s today’s launch attempt over?

Indeed, as the seconds ticked into long minutes some people even started retreating from their spots thinking that it really was all over for today at least.

Out there we had no way of knowing what was happening. No announcements to the assembled crowd - instead of the roar of the mighty engines all remained silent.

Of course, those watching round the world on NASA TV knew that mission control was unsure whether the ‘beanie cap’ that covers the top of the giant orange external tank had properly retracted.

Sounds crazy when you are at the actual launch site but I quickly dialled up home 4000 miles away in England where my wife was glued to NASA’s broadcast.

"It’s a problem with the beanie cap," she quickly explained and then, "but it’s been sorted and they are going!" With that the countdown clock burst to life again, resolutely marking off the last 30 seconds.

Smoke billowed from the pad and at first the Shuttle rose in silence. Then the crackling of its engines comes rumbling across, transforming into a noise that shakes the ground and rocks through your whole body.

Rising majestically one final time, Atlantis spread her wings and powered into the sky with what is understood to have been one million people watching from every available viewpoint in this part of Florida.


The orbiter climbed on a blinding column of fire from the same pad that launched Columbia in 1981 on the very first Shuttle flight, a rippling roar emanating from its main engines and boosters as spectators everywhere cheered, clapped and cried.


The flame was brighter than anything you can manage, almost too piercing to look at in real life - a jewel of brightness climbing into the heavens.


Though it didn't take long for Atlantis to disappear through the clouds, it left a lasting impression for those on the ground.

Even after it reached orbit some eight minutes after liftoff the billowing trail of smoke and steam it left behind maintained a steady link between the launch complex and cloud deck, as if holding on to the last departing Shuttle.


My 'automated' snaps turned out surprisingly well and some of them are added above along with (below) an official NASA shot of the KSC crowd, in which I can be spotted in the foreground if you know exactly where to look.

Atlantis spreads its wings

Just experienced history in the making - a once (and last) in a lifetime event. It will take a while to sink in, hence I am posting my thoughts and impressions in the days afterwards.

Friday morning 10.30 am. It was getting hotter by the minute as the clouds scattered over Kennedy Space Center, like curtains unveiling a giant stage for one last drama. The forecast showers hadn’t materialised and controllers in the ‘firing room' gave the ‘go' for ascent after a positive poll from their ground teams.

In reality the weather was just good enough for launch – based on some additional acceptance on the forecasted conditions at the nearby Shuttle Landing Facility had a Return To Landing Site abort been required.

But then the countdown clock dramatically stopped at T-31 seconds, just prior to the final automatic sequence. This was based on a lack of an indication that the‘beanie cap’, technically known as the GOX Vent Arm, had properly retracted and latched from the top of the external tank.


We were told in the post-launch briefing that this is something engineers were aware could happen but were still surprised it showed during an actual launch countdown.

Thankfully, the Firing Room teams were prepared. In three long minutes they ran through a pre-determined procedure to verify the arm was retracted and latched using a closed circuit camera.

As the countdown resumed - with only 58 seconds left of the launch window - launch director Mike Leinbach told the Atlantis crew - Chris Ferguson, Doug Hurley, Sandy Magnus and Rex Walheim - to "have a little fun up there" with "a true American icon".

08 July 2011

It's a beautiful day

Thirty years and 135 missions after its debut, NASA got down to the business of launching a Space Shuttle for the final time this morning.

It was a privilege to be amongst the 1,350 media representatives from around the world who had descended en masse - many to witness a launch for the first time - for this history-making occasion.

My day started with a 4.30 am wake up call, which was at exactly the same time the four astronauts were woken in their quarters at KSC for breakfast and to begin their preparations.

It was still dark and the air heavy and humid as I started the 35 minute drive from downtown Cocoa Beach towards the space centre.

Traffic was already heavy and vehicles of all shapes and sizes were beginning to congregate on the roadsides to reserve distant views across the Banana River to the launch site for their bleary-eyed occupants. With up to a million visitors expected, many had ‘camped’ overnight to reserve their spot.

As well as the normal security gate a second advance checkpoint had been instigated on the approach to the KSC perimeter and by 6 am cars were backing up in both lanes, cop cars and trucks parked alongside adding to a sense of occasion with their blue flashing lights cutting through the dark.

There had already been a few spits of rain as the first light of dawn began appearing through a crack in the dark overnight clouds - and with it came a glimmer of hope that it might just clear enough in a few hours’ time to get Atlantis off the pad.

For much of the week, and particularly with yesterday’s torrential rain and thunderstorms, a launch had been thought highly unlikely today with only a 30 percent chance of the weather being acceptable.

I arrived at the press site in the nick of time for another security check, this time with an army trained sniffer dog, as four NASA coaches lined up to take a elite group of mainly photographers to witness the traditional crew walkout.

We had less than an hour to wait behind a barrier for the astronauts, clad in their distinctive orange flight suits, to make their brief appearance. Many of the regular photographers position small step ladders to get an elevated view of the heads of others.

The photographers are joined by other guests and onlookers as the time for walkout draws nearer and the sense of excitement and anticipation is heightened when a military helicopter begins circling overhead.

Word comes that the astronauts are in the elevator and then a huge cheer goes up as the four - Chris Ferguson, Doug Hurley, Sandy Magnus and Rex Walheim appear from behind the silver Astrobus. They wave and pose before climbing onboard for the 15 minute journey to Pad 39A.


The crowd begins to disperse and I glimpse a familiar face - Nichelle Nichols, known to millions around the world as ‘Uhura’, the communications officer on Enterprise in the original Star Trek series.


With three hours to go before launch we head back to the press site. Overhead the cloud ceiling seems a little higher than before and some small breaks have appeared here and there.

Despite the previous day’s dire predictions maybe it had been a good call to proceed with the overnight tanking of Atlantis. The Florida weather can be as fickle as anywhere.

06 July 2011

The final countdown

There could hardly be a more appropriate soundtrack to events at Kennedy Space Center this week. ‘The Final Countdown’, a rock song originally released by the Swedish band ‘Europe’ in 1986, reached number one in 25 countries, including the UK. In the United States the song peaked at number eight.

The clock has been ticking for the Space Shuttle programme for some years now but yesterday the last ever countdown began in earnest when the launch clock at Kennedy Space Center — the giant digital display familiar to TV viewers the world over — began counting down from 43 hours. When it reaches zero, Atlantis will be on its way.

But during a countdown the time on the clock does not translate to actual time — considerably more than 43 hours will elapse between countdown and liftoff. In reality some 70 hours separate the start-up of the countdown clock at 1:00 pm yesterday and the planned launch of the Shuttle at 11:26 this Friday.

The reason for the difference in timekeeping is a series of planned ‘holds’ — built-in pauses that allow launch managers to take stock of the mission's status and respond to changing conditions.

In all, a Shuttle launch countdown contains seven holds, which take place when the countdown clock reads 27 hours, 19 hours, 11 hours, six hours, three hours, 20 minutes and nine minutes.

A specific list of safety checks (inspect external fuel tanks at T-minus 11 hours), launch-preparation tasks (clear launch pad and surrounding area of personnel at T-minus six hours) and decision points (final ‘go/no-go’ poll among launch managers at T-minus nine minutes) are addressed before ending the hold and proceeding into the countdown.

For this final Shuttle mission, designated STS-135, the planned holds range in duration from 10 minutes to 14 hours.

Only after the countdown clock resumes following the final hold at T-minus nine minutes will it reflect the actual amount of time remaining until liftoff.



 
 

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