Astronauts Open Dragon Capsule Hatch
Hexydes writes "Early in the morning (5:53 am EST) on May 26th, 2012, NASA gave the go-ahead for the Expedition 31 crew to begin the procedure to open the hatch on the Dragon capsule, now directly attached to the ISS. 'The hatch opening begins four days of operations to unload more than 1,000 pounds of cargo from the first commercial spacecraft to visit the space station and reload it with experiments and cargo for a return trip to Earth. It is scheduled for splashdown several hundred miles west of California on May 31. Wearing protective masks and goggles, as is customary for the opening of a hatch to any newly arrived vehicle at the station, Pettit entered the Dragon with Station Commander Oleg Kononenko. The goggles and masks will be removed once the station atmosphere has had a chance to mix air with the air inside the Dragon itself.' Here is a video of the procedure."
I have tremendous respect for Mr Musk and his team at SpaceX. To have designed and built the Falcon 9 and the Dragon, and to have them work perfectly every time, in the short time they had, is an amazing achievement.
On the other hand, this really isn't the first "privately built" spacecraft. Almost all of the "NASA" rockets and spacecraft were built by independent contractors. NASA did a lot of the design work on the Saturn rockets and the spacecraft, but the Redstone, Atlas, and Titan rockets were all designed by private contractors for the military. SpaceX has some advantage in that it's doing everything under one roof (literally).
It is impressive to see that hatch open -- showing the depths of the cooperation between NASA and SpaceX. NASA has to have been working on this almost as hard as SpaceX over the past year to develop the procedures for the rendezvous, capture, and berthing of the Dragon. The opening of that hatch might not be as historic as the Apollo-Soyuz docking of the '70s but it's right up there.
I love Mondays. On a Monday, anything is possible.
while there is no weight, objects still have mass and momentum so producing enough force to start moving 1000 lbs and producing enough to stop 1000 lbs is a big issue.
No. It is no issue at all. You could push it with your finger. A fly could move it. If you apply 10 pounds of force for one second, it will start moving, and it will take exactly 10 pounds of force applied for one second in the opposite direction to stop it... or you could stop it by applying 5 lbs of force for two seconds.
When our name is on the back of your car, we're behind you all the way!
It's great that we have U.S.-based cargo delivery/recovery capacity again. This is definitely a huge milestone. However, the crewed-version of the Dragon will be the true, emotional U.S. milestone, as it replaces the human element lost with the retirement of the space shuttle.
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