The
big
news this month is the installation of the Joint Airlock Module (JAM) on
the International Space Station (ISS),
which completes "Phase One" of the complex. What that means in English
is that the ISS now has everything it needs to add bits on to itself, and
to allow the people inside to maintain the workings of it. They've got
an arm, and airlock and enough solar panels to power it all. Half of the
station is now in place.
Putting
the 6 tonne airlock (seen here on the left in its hangar on Earth) in place
was quite an intricate task requiring three spacewalks. Susan Helms (who
has been up on the ISS for a few months now) steered the new Canadian arm
and attached the JAM to the "Unity" module. I watched the NASA TV coverage
as she slowly moved the module and later the repressurising gas tanks over
one bit at a time using the ISS's own robot arm - which fortunately behaved
itself. It moved with a snail's pace; once you've got 6 ton on the move,
it's kinda hard to stop it in a hurry even in zero-g. Occasionally there
would be a sharp ">Crack!<" broadcast over the voice channel as the
shuttle's manoeuvreing thrusters fired to keep the station in position.
At times it sounded like there was a small war going on up there, and apparently
things don't get any quieter when the astronauts want to get to sleep.
The shuttle Atlantis used its own arm to bring
universal autonomous assembly tools (also known of as a guy in a spacesuit)
to the right place on the ISS so that various catches and bolts could be
done up. A strange sight, seeing a robot use a human as a tool, but the
astronaut out on the end was getting a heck of a view. With the new airlock,
both cosmonauts and astronauts will be able to use their respective country's
spacesuits to go out for a peek. As things stand, only US-made spacesuits
can be used safely - some assembly is still required. Michael Gernhardt
(seen exiting here on the right) and James Reilly used their suits in it,
and were the first ones out over the threshold.
Assembly went relatively smoothly and everything pretty much fitted. There was one minor leak, some hasty patching, an extra day aloft and an incident where some valves had been mis-labeled, so the JAM didn't fill with air when operated as per the manual. A bit of prodding and checking soon fixed the problem though. The next step is to add on various international support modules, now that the core is complete and they've got something to hang onto. But not for a while yet; both of this year's remaining shuttle flights will be taking cargo & experiments to the ISS in the Italian Leonardo delivery van that we've covered before. The next flight, STS105, scheduled for the 9th August will also deliver the third crew to the ISS and - one hopes - bring the second crew safely back down again.
Artemis
Almost AloftOf more controversy is his eventual destination. The US & Russia have agreed not to send more tourists to The ISS, and the US is in the process of passing a bill worded to sound like it encourages commercial space activity, but which basically prevents any space-bourne NASA equipment being used commercially.
Russia, however, is very keen on taking tourists into space, and it would not surprise me if they make flights specifically for that purpose.
Thunderbirds
Are Go
EZ-RocketThe rocket is a commercial Long-EZ light kit aircraft (which Rutan has previously flown around the world), modified to carry two rockets that use liquid oxygen to burn alcohol-based fuels to give 400lb of thrust each. This gives about the same thrust as the first ever jet aircraft, but will work above the point where jet engines run out of oxygen. XCOR hopes to use it for sightseeing tours, and the best of luck to them.
This edition is also on the web, just point your web browser
to http://olliver.family.gen.nz. vik@olliver.family.gen.nz.
"Education is a
progressive discovery of our own ignorance." - Will
Durant, American historian
Back to the Launchpad
main page http://olliver.family.gen.nz/launchpad