Enterprise visits Stansted

One of the most exciting assignments I was ever given as a young local newspaper reporter back in the early 1980s was to cover the visit to Stansted airport of the Space Shuttle Enterprise, riding piggyback on its 747 carrier aircraft.

It was in the early days of the Space Shuttle programme and NASA had flown Enterprise round Europe as a PR stunt, accompanied by the commander of the first ever flight John Young who, with Bob Crippen, had flown the orbiter’s maiden voyage on 12 April 1981.

The stop-off on a Sunday afternoon at Stansted airport north of London attracted thousands of people eager like myself to catch a glimpse of the new spaceship.

Strictly speaking it was not ‘local’ news for the Lincolnshire Free Press/Spalding Guardian weekly newspapers - but my Editor David Young knew it would attract many visitors from our area and was astute enough not to curb a young hack’s enthusiasm.

As a newly qualified reporter with a mainstay diet of local courts, councils and police work I could hardly of dreamed that the 80 mile trip to Stansted would sow the seeds for a career that would one day take me to many of the iconic space centres of the world, including Kennedy Space Center (KSC) itself to witness the countdown and launch of Space Shuttles.

The piece I wrote for the Lincolnshire Free Press — in those days a traditional broadsheet paper owned by East Midlands Allied Press (EMAP) — reflected the optimism surrounding the fledgling Shuttle programme.

Dr Hans Mark, deputy director of NASA at the time, predicted that by the mid-1990s there would be almost one Shuttle mission per week and that before the end of the century several thousand people would have flown in space.

Of course, in the end things didn’t quite turn out quite as he and many others had predicted.

So, some 28 years later, after collecting my press badges and passing through security on a sultry July morning, I find myself driving up the long approach road to NASA’s KSC.

The giant Vehicle Assembly Building dominates the view ahead and round the corner somewhere a Space Shuttle stands on launch pad 39A ready to make history.

Mademoiselle Rouge

Thank you Sir Richard - Branson of course - for a ride on one of your brand new Airbus A330-300 aeroplanes across the Atlantic today.

Virgin Atlantic introduced the first of its new A330 aircraft ‘Beauty Queen’ on the Manchester to Orlando route just this April, with the second ‘Mademoiselle Rouge’ following on the Gatwick-Orlando schedule from early May.

According to Virgin, the A330 deliver savings in emissions and fuel consumption, and offers customers a ‘cutting-edge product which will transform their flying experience’.

Within two years Virgin will be flying 10 of the long range twin-engined aircraft which are among the most efficient aircraft in their class today. All will be powered by Rolls-Royce Trent 700 engines manufactured in Derby, UK.

The new planes, which will use 15 per cent less fuel per seat than the airline's A340-300 aircraft, also feature a revolutionary new in-flight entertainment system created by Panasonic. It uses the latest touch screen technology and features over 300 hours of content.

And so was my flying experience transformed by Mademoiselle Rouge? I have to say it was a pretty good flight all round, with lower noise levels and much improved seating arrangements in economy class.

As for the entertainment system - that’s pretty cool too with 65 of the latest films to watch ‘on demand’, and a bewildering range of TV programmes, news flashes, music and games to keep you glued to the screen.

But, no matter how good the ‘facilities’, after nine hours in the air I’m more than ready to leave the confines of an A330.

Ninety minutes after the smoothest of landings I was through customs and car hire, heading out in the bright evening sunshine to the east coast of Florida where a craft of an altogether different era is waiting patiently on its launch pad.

Dollars for Russia

The UK was just finishing a glorious Easter weekend and entering the final run-up to Royal wedding madness when I started this blog on 26 April en route to witness the penultimate launch of the US Space Shuttle.

Now, a couple of months or so on and with Endeavour’s spectacular mission done and dusted, we are entering the final countdown for the very last Shuttle launch.

This time it is the turn of the United States to kickoff countdown week with today’s 4th July public holiday to celebrate Independence Day.

Though the four-strong crew of the Space Shuttle Atlantis arrived at Kennedy Space Center (KSC) this afternoon the day was, for the vast majority of NASA employees working on the mission, the end of a welcome long weekend before mission control gets down to serious business.

Just as the technicians, engineers, mission planners and pad workers arrive at their stations to start the clock on Tuesday lunchtime, I hope to be well on my way across the Atlantic courtesy of a Virgin flight.

In principle I will be catching up with some work on the laptop - in practice my battery may be dead and so I may just be catching one of the latest film releases on the in-flight entertainment system.

The atmosphere at KSC this week will be one of high drama and excitement, tinged with sadness and probably some unbelief to those more closely involved than I that this will be the last opportunity to work on or witness a Space Shuttle launch.

I will be meeting up with many old friends on the Shuttle media circuit at KSC. Some of them, like Gerard van de Haar and Rudolf van Beest from the Netherlands, are veterans of many more ‘live’ Shuttle launches than myself.

Spaceflight’s Ken Kremer, from New Jersey, will be there too, along with many other regulars and, of course, the great US TV media, rolling into town like a posse of modern-day cowboys on their giant satellite wagons.

But there is also a touch of irony to this whole affair. Barely a week after American’s toast Independence Day with patriotic pride, the country’s human space programme will slip into a new phase that will be far from independent.

Political shenanigans in the last two US administrations have left a gaping hole in the country’s space infrastructure. It means that after the final flight of the Space Shuttle the US will loose its only means of launching its own citizens into space.
 

This time it is the Russians who have come to the rescue, offering NASA a rather neat ‘pay as you go’ commercial service for at least the next three years, and probably longer.

So there you have it. America is about to pay Russia around 60 million bucks a throw to blast its astronauts into space on a rocket that has changed little since the days of Yuri Gagarin.

But first we have a final Shuttle mission to enjoy!
　

Coast to coast

The Lighthouse Keeper, his beautiful wife and loveable dog don’t actually live in a lighthouse. They reside in a more conventional ‘box’ with a nice garden in the middle of the Fens, the flatlands of eastern England.

It’s a seascape of kinds but there’s no view of the sea from here, just big open skies. As the local crow flies, however, it is only some 10-15 miles to the muddy Wash, the largest estuary system in Britain.

If vast swaths of the Fens — land mostly at or just above sea level — become flooded as sea levels rise through climate change in the future the sea view could one day come to us.

But to other matters. Let me introduce our dog, a cute Italian Greyhound called Rosie, or various derivatives of the name according to mood, including ‘Rosebud’,‘Buddy’, ‘RD’ and other affectionate unmentionables. She was 14 last week, so is an old lady now. Generally healthy and enjoying the occasional walk but with failing eyesight due to cataracts.

For those of you not familiar with this breed, or never having met an ‘Iggy’, they are the coolest member of the sight hound family but weigh in at a rather diddy size. A bit dropped off your regular racing monster and generally about half the size of a Whippet. But in every other respect they look and behave in the same laid back way.

Not sure that RD would appreciate living alongside or beneath a giant flashing light but if we ever did transfer to a real lighthouse then a candidate might be this one.

This warning outpost is located on the sandy cliffs above the traditional seaside town of Cromer on the North Norfolk coast so it is not exactly remote in terms of lighthouse locations.

Cromer, and its surrounding countryside and beaches, are a long-time favourite haunt for family holidays and weekends away. It lies some 25 miles north east of historic Norwich and much of its charm is that - apart from the necessary trappings of modern life - little has changed since its Victorian heyday.

A welcome addition about four years ago to Cromer’s growing café and restaurant society was ‘The Rocket House’, just down from the town’s iconic pier which still boasts a theatre for summer shows and a lifeboat station on the end.

The Rocket House is so-called because the café, with the Henry Blogg lifeboat museum below, is built on a site that was used during the Second World War to fire warning rockets out over the North Sea.

The food is always great, the coffee the best in Cromer, and the staff friendly. The view across the beach and sea through porthole windows or from the outside balcony is enthralling whatever the weather.

And with a word like ‘rocket’ in its name where could be more appropriate for the Lighthouse Keeper and his wife to repose on a sunny Norfolk afternoon?

Photo passion

It was the kind of opportunity that dreams are made of. Not only was Paolo Nespoli working in space as an astronaut but he was about to get the once-in-a-lifetime chance that us Earth-bound photographers can only dream of.

First the comparisons. Paolo and I both grew up in the 1960s harbouring dreams that we might one day fly in space. And we both got keen on photography from an early age too.

I went on to write about space, interviewing guys like Nespoli and editing a magazine called Spaceflight. He joined the Italian Air Force and became one of ESA’s astronauts, flying to the Space Station in 2007 and then again at the end of 2010, this time for a six month stay.

Both of us continue on our photographic quest - me from down here and Paolo from his temporary home 200 miles high. During his recent, and probably last, trip into orbit he enthusiastically photographed his view of Earth, downloading an impressive 667 images and capturing many more stunning views.

But on his way home, just after his Soyuz TMA-20 spacecraft undocked from the International Space Station at the end of May, Paolo had one final very special job to do - capture unique images of the orbiting outpost with both the Shuttle and Europe’s ATV ferry attached. His spacecraft stopped about 200 metres away and the Station tilted to present a better view.

Paolo took his photos through a small window in the Soyuz orbital module before returning to his seat in the descent module alongside crewmates Dmitri Kondratyev and Catherine Coleman for the landing.

"This was a complex and delicate manoeuvre that could have caused serious problems if not executed properly, but I felt it was worth the risk," says Paolo, who had only few seconds to admire the view for himself.

"Taking these pictures was not as straightforward as aiming the camera and shooting," he explained.

"When we undocked, we were already strapped in our seats wearing spacesuits. Our suits and the three hatches between the landing and orbital modules were leak-checked and normally after undocking the seals are not broken any more because retesting them costs oxygen – and there is not so much of it onboard."

The problem for Paolo was that the tiny window where the pictures needed to be taken was in the orbital module – already then partly depressurised.

He had to remove his gloves, unstrap from his seat, float to the hatch, repressurise the forward module and open the hatch.

"I had to slide over Dmitry, paying attention not to hit the manual controls, and go up to the orbital module where I had prepared the cameras before hatch closure," he said.

Paolo recorded stills and video, alternating them while paying attention to the composition. "The position of the Earth, the reflections on the glass of the window - and I had to make sure that the lens was in the centre of the window.

"I really prayed that these would be good, since I was conscious of their value. But what was done was done – and I quickly forgot them when I had to concentrate on redoing the hatch and suit leak checks, and pick up the reentry and landing procedures."

It was not until a number of days after landing when his precious camera cards were retrieved from the capsule that his incredible photos of an orbiting Space Station and Space Shuttle could be viewed.

He described taking the historic photos as an honour. "Since I was a kid, photography has been a hobby dear to me and all through my life its has brought me to unusual places and made me live unexpected experiences," he said.

"Like a photographer who has a gorgeous model in front of him, I was more concentrating on getting a good technical and artistic product than admiring it.

"I saw the view when changing from still to video images, but I purposely limited looking because I know I would have been mesmerised by the beauty of it."

And then there was one...

The Space Shuttle Endeavour slipped back to Earth this morning under cover of darkness. And just as it made a perfect touchdown at Kennedy Space Center, its elder sister Atlantis was arriving at launch pad 39A a few miles away.

Endeavour has now safely completed her spaceflight career that covered 25 voyages to Earth orbit over 19 years, spanning 122,883,151 miles travelled, 4,677 revolutions of the planet and 299 days aloft.

In reality, STS-134 was the final mission to the International Space Station of any real substance. Barring emergencies on this summer’s Atlantis flight there will be no more spacewalks by Shuttle astronauts or major payloads carried into orbit.

The eerie night-time landing of NASA’s youngest orbiter brought out the emotions even more than Discovery’s final flight a few months earlier.

Now the reality hits home - there is just one more flight ever in the 30 year history of the Space Shuttle programme.

A few hours before a sonic boom heralded Endeavour’s arrival in the dark skies above KSC, the Space Shuttle Atlantis emerged from the Vehicle Assembly Building (VAB) to a cheering crowd and a barrage of camera flashes for its final journey to a launch pad.

The Florida sun was setting and this was the last time any Shuttle was scheduled to make the slow 3.5 mile trek from the VAB in preparation for its currently planned launch on 8 July.

Patriotic music blared from speakers as powerful xenon floodlights ushered the vehicle through the crowd, which was estimated to be as large as 8,400. Among those in attendance were the four astronauts who will make up the final Shuttle crew.

Workers and their guests were also invited to witness the historic rollout as part of a NASA morale programme to thank employees for their years of service before many of them loose their jobs.

"In my opinion this is the most graceful, beautiful vehicle we've had to fly in space ever," said astronaut Rex Walheim. "It's going to be a long time until you see a vehicle roll to the pad that looks as beautiful as that. How can you beat that - an airplane sitting on the side of a rocket? It's absolutely stunning."

As America looks to more commercial solutions for launching its citizens into space in the future it seems certain that something of the romance of space travel will be lost along with the retirement of the Space Shuttle.

Endeavour's last blast

It was an awesome launch for Endeavour in the end - even viewed from 4000 miles away on the internet courtesy of NASA TV rather than from the thundering proximity of Kennedy Space Center (KSC) press site close to the famous countdown clock.

Endeavour's breakfast-time launch yesterday thrilled 45,000 spectators on the grounds of KSC and a crowd of many thousands - though likely less than the 500,000 who turned up in April - on Florida’s beaches and causeways and the shores of the Banana and Indian rivers.

It's a scene that will occur only one more time in the history of the Space Shuttle programme, when Atlantis launches in mid-July on the 135th and final, final flight.

Though Endeavour had a smooth countdown this time around, all was not quite perfect. A cloud deck - that did not threaten launch the launch itself - obscured the view of spectators closer to KSC once the Shuttle was about 22 seconds into flight.

"You can see that we don't have any flight rules or launch commit criteria that dictate how long you can see the launch before it goes out of sight," Mike Moses, NASA's Shuttle Program Launch Integration manager, joked to reporters in the post-launch press conference.

Countdown to layoffs

Kennedy Space Center's shrinking Space Shuttle workforce is looming larger in the programme's final days.

Repairs like those Endeavour needed after its 29 April launch postponement pose a greater challenge with fewer workers available and managers careful not to overtax them.

And launch of the final Space Shuttle mission has slipped into July, mainly because remaining crews can't perform as many major operations simultaneously or without interruption.

Atlantis' move to the Vehicle Assembly Building (VAB) to be joined with an external tank and boosters, for example, has had to wait because teams are tied up with Endeavour's preparations for its 8:56 am (1356 BST) launch on Monday.

The picture below shows Atlantis in NASA’s Orbiter Processing Facility-1 as workers guide a transporter system into place for its move, or rollover, to the nearby VAB.

"We're being affected by our workforce reductions," said Mike Moses, NASA's Shuttle launch integration manager at a press briefing yesterday. "In the past, we would have had extra teams to be able to help with that."

Even as the second countdown began on Friday to Endeavour's last ever launch, planning for the biggest NASA workforce reduction yet marched forward.

Lead Shuttle contractor United Space Alliance this week sent 60-day notices of potential layoffs to some 1,900 local employees.

Most of the layoffs are expected to take effect on 22 July, though the exact timing depends on when Atlantis launches on the 135th and final mission of the three-decade Shuttle programme.

"It's coming, and everybody knows it's coming," said Moses. "The concept of, we're here until Atlantis flies is still what the team knows is the true milestone."

Kennedy's total contractor workforce, including non-Shuttle workers, now numbers 8,900 - down from about 13,000 two years ago.

Elsewhere across the US, the Shuttle programme has dropped from 14,000 contractors in late 2006 to about 5,500 now, a 60 percent decline.

NASA and its contractors have closely monitored the down-sizing to ensure critical skills were retained so that the remaining missions could be flown safely.

See you later

I’ll be heading back to England on a flight leaving at teatime this evening, leaving behind some hot sunshine, blues skies and cheap (for us Brits) car fuel.

By now there should have been just one more Space Shuttle blastoff to come. But Endeavour, now cocooned is the grey metalwork of launch pad 39A, was in no mood to go for its final flight time at the first attempt.

Yesterday, the Load Control Assembly-2 (LCA-2), which feeds power to the fuel line heaters, was removed from inside Endeavour's aft section (NASA picture below).

It is believed to have caused the heaters for Endeavour's auxiliary power unit-1 (APU-1) to fail on 29 April during the first launch attempt. The assembly is now being replaced and systems will be retested before the launch is rescheduled.

When it eventually gets off the ground, the STS-134 mission will deliver the Express Logistics Carrier-3, Alpha Magnetic Spectrometer-2 (AMS), a high-pressure gas tank and additional spare parts for the Dextre robotic helper to the International Space Station.

So, this is the Lighthouse Keeper signing off from Cape Canaveral for now, as I have to go pack my bags. Hope you’ve enjoyed this foray into the world of NASA and the Space Shuttle - and thank you for joining me.

The era of one of the most remarkable flying machines ever built is almost ended. But, for the moment at least, Endeavour lives to fly another day.

Shore view

It's 4.30 pm. The beach is not nearly so packed this afternoon, though the day is equally as nice as yesterday, and the day before, and the day before.

From my vantage point on the damp sand from the retreated tide, I can see in the distance Cape Canaveral Air Force Station and the famous black and white Canaveral lighthouse.

To the left of the lighthouse is a giant monolith, a dark block that reaches high into the sky even from this great distance.

It houses a Delta IV Heavy rocket, currently number one on the US size and power manifesto. Can’t tell whether the doors are open from this distance but inside I know there is rocket being prepared for launch later this year.

If you squint against the blue horizon you can just make out the nearby launch pad lightening-conductor towers with their distinctive cigarette-style tops.

Whilst technicians continue to work the changes on Endeavour’s pad (which you can’t see in a direct line-of-sight from the beach), NASA has confirmed it will not be considering a launch before 11 May.

Earlier this afternoon I took off to nearby Jetty Park, located at the sea entrance to Port Canaveral to see about some wildlife spotting.

The pier-cum-breakwater juts out into the Atlantic for a couple of hundred metres or so on the northern-most edge of this east coast beach.

A couple of pelicans were preening themselves on the rocks and the busy little sand birds, as I call them, were darting around searching for insects.

I sighted several sea turtles working the shallow rocky ledges, diving deeper and then popping their bald round heads above the water for a breath of air before heading down again. These apart, my foray wasn’t so successful - no dolphins, no manatee.

I’ve added a few of my ‘wildlife’ snaps to the end of this piece. All were taken at Jetty Park, except the Osprey with the fish in its claws, which I shot from near Cape Canaveral locks.

 

 

 

 

Stuck in a moment

It’s been all quiet on the space front today as NASA engineers work to remove and replace the faulty electrical distribution box before starting an exhaustive round of tests over at least 48 hours.

I had lunch at a Cuban restaurant called Roberto’s - a few miles south of Cocoa Beach - with Steve Young, who also had a stint working on Spaceflight magazine in the 1990s.

He bought Astronomy Now magazine on leaving Spaceflight and also launched the spaceflightnow.com website.

Space Shuttle missions have been his great passion and Steve’s own ‘mission control’ is an office building (pictured below) at KSC, over-looking the countdown clock and launch pads.

Like for many Shuttle workers, things will probably have to change for the spaceflightnow.com team after the final Shuttle mission is concluded this summer.

Which brings me to when the launch of Endeavour on the penultimate Space Shuttle flight might actually taken place.

A launch this coming Sunday, which also happens to be Mother’s Day in America, has already been ruled out as the repair work pushes the crew's next launch attempt to at least Tuesday, 10 May. An official launch date will probably not be announced until Friday, after repairs have been given the all-clear.

If liftoff doesn't occur next week things become decidedly more complex to organise at the Space Station - and there is even talk of the flight slipping right through to the end of June, the next most favourable launch window.

During last Friday’s countdown, the electrical fault could have easily gone either way. But it took the wrong path - and, to borrow the title from the U2 album ‘All that you can’t leave behind’, Endeavour became ‘Stuck in a moment you can’t get out of’.

Setting sail

NASA finally confirmed mid-afternoon what everyone had been expecting - that the launch of Endeavour would be put back to at least next Sunday and perhaps May 10 so a faulty electronic switch box that routes power to critical systems can be replaced.

The hopes of a new launch attempt early in the week evaporated after it became clear that the switch box would have to be replaced, and the work and extensive testing could not be been completed in time to launch prior to a planned Atlas rocket flight on Friday.

Mike Moses, chairman of the launch management team, stressed that 8 May was only a working target at this stage, hinting that if the box changeover and testing was not straightforward the delay could be longer.

He said they hoped to announce a new target launch date by the middle of the week.

An initial launch attempt was scrapped on Friday after heaters on one of the Shuttle's Auxiliary Power Units failed. The problem was traced to the switch box, which will be replaced early this week. The testing of a spare switch box is expected to take an additional two days.

Meanwhile, at nearby Port Canaveral on Sunday afternoon, a procession of three giant cruise ships embarked on their own voyages of discovery.

This picture shows the Freedom of the Seas with 5000 passengers and 1000 crew making its way out into the Atlantic.

Two ships that shouldn’t have been in dock today - or at least on their way back in to port - were NASA’s booster recovery vessels, Liberty Star and Freedom Star.

Had Endeavour launched as originally planned on Friday, the two ships would normally have been arriving back during the day with the recovered solid rocket boosters in tow.

Safety first

Okay, well the news is not good from KSC this morning. The media briefing is off until 2 pm this afternoon but the launch of Endeavour is definitely off for a few days at the very least.

Rather than just change a thermostat it looks as though they need to change the whole electrical box of tricks - which has to be followed by 48 hours of testing.

There is a chance the launch could switch to Thursday or Friday if the negotiations depending on how the Atlas launch is progressing and whether that could be changed. Otherwise it is most likely to go until early next week. A new launch date will be set tomorrow.

All gutted here - but that’s the way of these things. Safety of the Shuttle and its crew is paramount, and with only two Space Shuttle launches left no one wants to take any chances.

Status briefing

Rumours and stories are flying about early this Sunday morning by text, email and twitter about whether Endeavour could launch this week.

The problem is they only have until Wednesday before the launch attempt has to stand down so that an Atlas rocket can be prepared for launch on Friday.

Rules dictate that only one launch vehicle can be fuelled and in the final stages of preparation at any one time. The next launch window for Endeavour opens on 8 May.

NASA management meetings to work out a plan are taking place as I write this and should be finalised soon. Then there will be a news briefing at the press centre at 1030 am (which should be aired live on NASA TV at 3.30 pm BST).

At the moment it seems the weather forecast is ‘red’ for Monday as well, with strong crosswinds and rain showers. It gets better if there is to be an attempt on Tuesday.

The electrical problem is likely either an open circuit in a hydraulic system fuel line heater thermostat or trouble inside an avionics box in the Shuttle's aft engine compartment.

Initial thermostat tests were consistent with a problem in the avionics box but engineers have not ruled out a connector problem or some other wiring issue elsewhere in the system.

If the problem can be isolated to an open circuit in a suspect thermostat, it is possible to install a replacement in time to support a second launch attempt this week.

Standby! 

Time for a break

With the KSC media centre closed on Saturday it was a chance to take a break from the space routine and recharge the batteries with an afternoon walk along Cocoa Beach to the resort's small pier.

 

Among the more interesting sights was a beach wedding and the departure of a cruise ship from nearby Port Canaveral.

 

Meanwhile, back at the launch site, Endeavour's countdown was being held at the T-minus 11 hour mark.

News came out late on Saturday afternoon that an APU thermostat had failed tests. If so, this is the better of the two most likely failures and would allow work to proceed towards a new launch attempt on Monday.

Technicians continued working late into the night to test thermostats for Endeavour's APU-1 fuel line heater to help determine what caused it to fail.

NASA flight planners also tweaked Endeavour's target liftoff time for a Monday launch attempt to 2:34 pm (7.34 pm GMT).

If a Monday launch is possible, the countdown would resume at 10:07 pm on Sunday, with fuelling starting at 5:09 am and the crew strapping in at 11:14 am on Monday.

Meet and greet

A few hundred metres - I guess it’s about as close as I’ll ever get to the President of America.

With the launch postponement still fresh, the visit of President Barack Obama and his family to Kennedy Space Center on Friday afternoon gave the assembled media something else to focus on.

I joined some of the TV crews and presenters on the roof of the CBS tower which is a good two storeys high and provided a grandstand view of the space centre landscape.

Obama was arriving on site by Marine helicopter after landing at the nearby Cape Canaveral Air Force Station - and the media cameras were scouring the horizon, all wanting to be first to pick up the imminent arrival.

America doesn’t do things by halves and in the end there were five military helicopters buzzing over KSC as the President swooped in, taking in a view of Endeavour on the pad on the way over.

From our distance it wasn’t easy to identify exactly which helicopter he was in - but then it turned out we’d been dupped anyway.

As we all focussed on the four big helicopters manoeuvring in from the north east behind the giant Vehicle Assembly Building (VAB), Obama’s chopper had discretely moved in at lower level from a westerly direction.

The first family was already on the ground as the four military escort helicopters put on a mini display for the live TV cameras, making it look as though they were landing the President.

So there was President Obama, wife Michelle and their two girls already being shown around the Atlantis Space Shuttle in the Orbiter Processing Facility, in reality not so far from where we were standing.

It would have been the first time in NASA history that a sitting President and his family had witnessed a Shuttle launch.

As well as seeing Atlantis in the VAB, The President and his wife met briefly with Endeavour's crew. Obama told them he was still hoping to get back to Florida for a liftoff.

So, unhappily but not unexpectedly, I didn’t get remotely close enough for a Presidential meet and greet or that all important handshake. The official party remained mostly inside while we media were cocooned on our tower, watching from afar in the afternoon sunshine. 　

Last minute hitch

 "We will not fly this machine until it is ready - and today it was not ready." These were the words of flight director Mike Leinbach at the end of a press briefing this afternoon following the postponement of the launch of Endeavour.

At the Kennedy Space Center it was a day of highs and lows. Despite the early overcast skies there was optimism and excitement in the air.

Ironically, by the end of the day, it was the weather that was cooperating and the technology that had gone arry. An hour before the scheduled launch time clear blue skies had returned making perfect conditions for liftoff.

The Shuttle team had worked hard through the previous night, performing the Rotating Service Structure retraction at the launch pad shortly before midnight to leave Endeavour bathed in bright arch lights, looking pristine and ready to go.

The milestone in preparing the Shuttle for launch came some five hours later than planned but the team still managed to start fuelling on time first thing in the morning.

From an outside perspective it seemed as though things were all going to plan - but behind closed doors the team had been alerted at around 9 am to a potential problem with a heater associated with the Shuttle's hydraulic power system.

Blissfully unaware of the unfolding situation, things continued as normal and I was among about 150 of the reporters and photographers present signed up to witness the crew walkout at the start of their journey to the launch pad.

Before being allowed on the NASA buses to transport us to the viewing point all bags and equipment had to be placed in a line for inspection by an army sniffer dog. This is standard practice when being taken to any secure KSC area.

A drive of several miles brought us to the Operations and Checkout building where the astronaut crew had been quarantined in their quarters since arriving two days previously.

We had a wait of about 45 minutes, a security helicopter with a machine gunner positioned in the open door swooping overhead. When it began to hover above at about midday we knew the crew, dressed in their orange flight suits, were about to appear.

After posing for photos they were off in the silver Astrovan with military escort to the launch pad. The iconic Astrovan has been used to transport crews to launch pads at KSC since the days of the Apollo Moon programme.

We’re back on the buses in a few minutes and head along the same route back towards the press centre area. But, bizarrely, after a mile or so, we see blue flashing lights coming in the opposite direction - closely followed by a speeding Astrovan.

It could mean only one thing - the launch had been aborted and the crew were on their way back to their quarters. In the next few seconds word came through via Twitter and text message confirming a postponement.

The Shuttle has three Auxiliary Power Units (APUs) that provide hydraulic power to steer the vehicle during ascent and entry. NASA’s launch commit criteria and flight rules require all three APUs to be fully operational for launch.

Endeavour's orange external fuel tank had to be drained of more than 500,000 gallons of liquid hydrogen and oxygen - a process taking about 24 hours - before engineers could access the area and evaluate the issue with APU 1. The only option was to postpone the launch for at least 72 hours.