Watch Chris Hadfield explain more about the Extravehicular Mobility Unit, as he trains at the Neutral Buoyancy Laboratory near Houston, Texas.
alright Chris Hadfield's here we're at
the neutral buoyancy lab this is the
underwater training facility where we've
learned how to do spacewalks and in a
few days I'm going to be underwater
practicing and teaching another
astronaut when the new astronauts one of
the David and Jeremy's classmates about
space walking practicing keeping my own
skills fresh here underwater in Houston
Texas at the neutral buoyancy lab we do
a lot of training of course before we
get in the water our tools are all laid
out for us to train with including
mock-ups of the Canada arm and all of
our various equipment that we need to
learn how to use to be able to
successfully walk in space all laid out
on tables when we go through them one by
one we have all the various joints that
the Canada and the crew may have to work
with replacing cameras in the foreground
are several of the big boxes that are on
the space station that so we might have
to change out as they break over time
onboard the space station
if the every feet in the portable foot
restraint and you want to turn you can
pick one foot out step on the OP head
and the whole articulating portable foot
restraint will turn and if you want to
roll in a different axis and then roll
it left and right but the tools we use
in space flow from extremely simple like
this wire tie that we just loop around
things and hold on the Russians had that
idea the wire tie very simple - pretty
straightforward like a ratchet where you
got to turn the ratchet it's got a
handle for you
nice socket ratchet set right through to
some pretty complicated tools that are
used for locking down the doors at a
space shuttle or similar equipment that
we use on the space station a lot of the
tools are made of metal trouble is when
you get in the water the metal is still
more dense than water so it pulls you to
the bottom of the pool so some of the
heavier tools like our big drill our big
pistol grip tool we make out of plastic
that way when you get in the pool it it
says the same density as the water it
doesn't float it doesn't sink and when
you really have to use a tool the divers
will just give you a high fidelity
and you could take off the plastic one
it's a compromise but it works for
hoses and clamps and connectors the
space station was cooled with ammonia it
has fluid connectors for water that has
fluid connectors for other gases
nitrogen and helium and so all of those
need to be trained for opening and
closing and connecting in orbit and this
is the simulator we have in order to
practice all of the techniques for
releasing and lifting and adjusting all
of the various parts of the space
station the big bales that will open and
close them to allow us to remove a
connector it's all different types and
this is where we learn to use them
EMU gloves these are the gloves that we
wear it to do a spacewalk hand goes up
inside all the various platters
Custom Fit sometimes we wear a liner
inside just to soak up the sweat
it's pressurized so we have this bar we
pull across the back really tight and
that squeezes on the glove so that it
doesn't balloon up when you're working
out in space water bag this goes inside
here's the drink spout up here that we
drink through and it gets carried inside
a little Kevlar bag inside so that we
have water to drink while Rogers live
for seven or eight hours it's important
to wear your helmet in space this is our
space walking helmet it's got visors
place for the head too even got a little
thing inside on this side to clear your
ears scratch your nose and I'll sell the
device it's a space walk and helmet
Good morning from the Neutral Buoyancy Lab.
All of the gear that we're going to be wearing is over on the far side under the Canada flag.
This pool is 15 metres deep, and it allows us to simulate weightlessness.
And today I'm going to be under water for about five or six hours, practicing space walking,
working with another astronaut, and reacquainting myself with the space walking suit.
So this is the EMU, the extravehicular mobility unit. It is different than the Russian Orlan.
This one you climb in through the bottom and then build the suit around you.
The Orlan, it's like getting into a little car or something.
You open the back and slide yourself in, and pull the door shut behind you.
This one has more mobility. The Orlan has a lot more simplicity for on-orbit ops.
They're not so good for this.
The gloves are alright.
But they're worse when they're pressurized. Right now I can manipulate this pretty well.