STS-114 ..Undocking Debris!

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STS-114 lifted off from Launch Pad 39B, Kennedy Space Center, on 26 July 2005 at 9:39 AM CDT (14:39 GMT). This daylight launch was the most watched in Shuttle history, with the possible exception of STS-1, the initial Shuttle launch on 12 April 1981. The timing and solar angle were chosen to maximise opportunities to film the liftoff, and ascent, from every possible perspective. These even included modified old jet bombers from the 1950s (WB-57 Canberras), carrying special camera turrets in the nose for the purpose of photographing Discovery at high altitude as she was on her way to orbit. The reasoning behind all of this was to make sure that if there were ANY debris strikes on the orbiter's sensitive heat shield, like the one which doomed Columbia in 2003, they would be captured on film for detailed analysis before allowing Discovery to re-enter the atmosphere.

The Crew experienced some facets of Shuttle flight that are entirely new. On orbit inspection of the heat shield, manual repairs to that heat shield, and experiments with different methods of on orbit heat shield repair. In addition, Discovery carried over 15 tons of equipment and supplies to the International Space Station ( in the Raphaello MPLM module ), where she was greeted upon arrival by the Expedition 11 Crew. Three EVAs (Extra-Vehicular Activity or spacewalk) were carried out. These involved Space Station repairs, improvements, and attending to heat shield problems. A fourth EVA to repair a flaw in the insulation below Commander Eileen Collins window was cancelled as unnecessary.

Space Shuttle Discovery and her crew landed safely at Edwards Air Force Base (NASA's Dryden Research Center) in the California desert at 7:11 AM CDT (12:11 GMT) on 9 August 2005. Total flight duration was 13 days 21 hours 32 minutes. The mission was highly successful, accomplishing every goal set for it.

The sad news is that in the wake of continued problems with external tank insulation breaking away during liftoff, the Shuttle fleet has been indefinately grounded until the problem is solved.

STS-114 Liftoff
Belly Inspection
Inside ISSy
Robinson On EVA
STS-114 Landing
THE EVENT

In the days after Discovery undocked from ISSy, there was talk on the internet about "U.F.O.s" being spotted on NASA Select TV when the Shuttle separated from the Space Station. This page is presented in order to dispell that rumor once and for all.

In the seconds after undocking, there are often bits of debris shaken loose from the Shuttle. As the Shuttle backs away and reaches a safe distance from the station, the RCS ( Reaction Control System ) jets are fired to increase the rate of separation. These firings can make this random junk swirl about in deceptive patterns.

Let's have a look at some pictures to see what created all the uproar, shall we?

UNDOCKING
The animated GIF at left illustrates the undocking of Discovery from ISSy exactly as it happened "live". This view is from the vantage point of Discovery. As the two vehicles separate, something of an optical illusion is created, giving the impression that the Space Station, rather than the Shuttle, is the one moving away.
DEBRIS!
Circled in Yellow is the piece of Shuttle debris which convinced some inexperienced eyes that an U.F.O. had flown by during the separation phase of the STS-114 undocking operation. The arrows show its trajectory, which changed radically due to an RCS firing.
   
This animated GIF amply illustrates how that errant bit of debris got so many people excited. But, as you can easily see here, it was very small in reality, and actually passed in FRONT of the PMA (Pressurized Mating Adaptor) which so recently connected Discovery to ISSy. Sorry folks, but this "UFO" was a false alarm.
   

Now we are zoomed in 150%. It's even easier to see in this animation that the debris passed in FRONT of the PMA.

This incident is a valuable lesson. It teaches us that NOT EVERYTHING which at first seems mysterious actually is...

***

At all times during this event, the camera was under the direct remote control of the INCO.

(INCO - INstrument & Communication Officer - The man in Houston Mission Control Center who is responsible for operating the Shuttle payload bay, and robotic arm, cameras. He also remotely operates the helmet cameras in space suits. In the case of ISS, this officer is referred to as the CATO - Communications And Tracking Officer. In both cases, these persons CONTROL everything which is PERMITTED to go out on broadcast to the public. It is a commonly believed falacy that the cameras are operated by Astronauts & Cosmonauts on the Shuttles, and Space Station. Very little camera work is done by the crews. They're way too busy for that.)

 

At the end of the day, it's up to YOU to draw your own conclusions.

 

© 2005 Jeff Challender