Jim,
it has been two years now since you were named to the crew for STS-88
and you're closing in on the scheduled launch date now; what are
your feelings as the beginning of this mission moves closer to becoming
a reality?
Well, obviously I think we're all very excited now that we have
a firm launch date and we think December 3rd is going to be a
good one. If it does slip we'll deal with that, but actually I'm
very excited: I'm taking this launch date seriously, and studying
very hard now.
The target launch date has been
moved twice in the past to accommodate the delay in getting some
of the station hardware ready to go. In terms of the postponements
themselves, have they been frustrating for you and your crewmates,
or have they provided you valuable time that you needed to get
ready to fly this mission?
Well, it turns out that both are true. On the one hand, we'd
loved to have flown last December because that means we'd be a
little closer to our next flight; on the other hand, the postponements
have in fact, been valuable. The development of the space station
is a daunting task, and I'm impressed that we're as ready as we
are. There's a whole lot of work to do and they're still doing
it, a lot of testing, a lot of integration because, of course,
as you know, this is a multinational project, so I think the delays,
although unfortunate, have been put to good use. We've done, been
able to do more testing and more integration, and I think it will
end up letting us have a more successful mission.
From your point of view over the
two years, have you been able to see a development of you and
your crewmates working together as a team?
Oh, absolutely. And one of the things that are unique and special,
actually, is the way a crew comes together. We're comprised of
different personalities and different backgrounds and that's really,
in the end, what really makes a crew a strong entity is that we,
if things go well and they have, we're able to draw on each other's
strengths and to help each other. So we do a lot of cross-training
but we also end up knowing what the other people are good at.
We've had, as you mentioned, a particularly long time to learn
to do that. I think that you're going to see that in the simulations
that we do and then in the real flight by the crew coordination
and our ability to help each other as we run into unexpected things.
And during all this, the time that
the five of you have been working together, growing as a team,
you've recently acquired another crewmate with the addition of
Sergei Krikalev to STS-88. How would you expect that this sort
of a change, relatively late in the game is going to have an impact
on your preparations?
I can only look at it positively because I'm doing the post
insertion work and we have a whole lot of stuff that we're bringing
into space with us. So I'm looking forward to an extra set of
hands to help me on the middeck, because right after we get into
orbit I'm going to be very busy downstairs trying to turn this
rocket ship into an orbiting work area. That's going to involve
a whole lot of configuration. What Sergei's going to bring, of
course I'm looking at it from a point of view of helping early
on in the flight, but for the whole flight he's going to bring
an enormous amount of expertise in spaceflight and his understanding
of Russian systems. He's got a good knowledge of English so it'll
be easy to communicate with him, and I think that what we'll see
as we integrate him into the crew, an even stronger crew, once
we get there.
Do you think that Krikalev has been
added to the group particularly because of his knowledge of the
Zarya and its systems by benefit of the time that he's spent training
as a member of the first Expedition crew to be living and working
there?
I don't actually know how they chose their representative, but
I think that the Russians chose a good one. His background is
obviously strong, and as one of the crew that will be the first
permanent inhabitants of the ISS, I think that he obviously makes
a lot of sense. Because right now he can come and fly with us
and still have time to resume his ISS, his International Space
Station training without any real impact to that. So without understanding
the politics and difficulty of crew selection. Because I'm sure
that there was more than one Russian who would've enjoyed coming
with us, it makes sense to have a Russian on the flight. This
is an international collaboration, we'd also love, of course,
to take with us one of our European Space Agency astronauts and
a Canadian and a Japanese, as well, on this flight. But I think
you'll see that in subsequent flights, is making sure that we
have a good mix of the partners who are responsible for building
the station. It just makes sense.
STS-88, your mission, is to assemble
first pieces of the International Space Station. Now before we
talk about the specifics of what you're going to do, let me ask
you one of those "big picture" questions: to you, what is the
historical significance of this flight? Why should we be building
a space station in Earth orbit anyway?
Well, that question has a lot of answers, Pat, and I'll try
to touch on a few. That is one, as an exploring nation, as a country,
and a great country, I think, does great things, and I think that
that's very true for America. The United States of America-we
are a great country and we go do great things, and building a
space station, is one of those things that we do as part of our
space program, as part of being a spacefaring nation. And so that
I see that in a historical context as part of a series of steps
that we're taking to end up with a permanent presence in space,
is to make it a home for not only the United States of America
but for all people. Because we have found that anywhere we go,
if we get enough people there, enough smart people, we're going
to find a way to learn things from it, to get economic advantage
out of it, technological spinoff, and a lot of things like that.
So on one level, on a very "big picture" level, going to space
is something that makes sense for us to do. As a employee of NASA
and as a citizen of our country, I also think that it's a step
on our way back to the moon and on to Mars, and that it's a logical
step in order to understand how better to live long-duration in
these hostile environments. Although they're hostile, if we take
the right precautions and we have the right technologies, we can
actually go and, astonishingly enough, live in these places and
perhaps make them our home.
You mentioned that the International
Space Station might serve as a jumping-off place, headed to other
places; do you see it as that much more than a scientific laboratory,
or do those things really balance?
That's one of the other answers for the International Space
Station's existence. Because in addition to being part of exploration,
there's a whole lot that we learn by exploring, and having a permanent
laboratory in space; a scientific laboratory, with enough power
and enough computing capability to support real science and good
science. I think that we'll see science and engineering accomplishments
and breakthroughs in the unique environment that space has to
offer. Our challenge as a agency is to take an expensive program-going
into space is expensive, I acknowledge that-and to make real benefits,
in tangible benefits in terms of science and technology, as well
as fulfilling our need to go explore our universe.
Now there are people who have criticized
the fact that the United States is working with Russia and with
many other international partners, in order to build this station
to work on this project; how do you respond to those critics?
When I look at the, 'cause it's a good question, hard questions
are good questions, and it is our responsibility, I think, to
have an understanding as best we can ourselves. Now of course
there are a lot of answers to this question as well as others,
but NASA is an instrument of foreign policy, and it's, I think,
fair to acknowledge that we have a role in this country's foreign
policy. So including our foreign partners is, I'm sure, part of
that foreign policy that the administration and Congress have
decided on. It brings the world more together, and I only see
that as a good thing. Working together on a project like this
is so superior to contesting a cold war, and I see only advantage
to going in with the Russians on this-we'll end up with common
understanding of each other. For example, I've been over at Home
Depot or Builder's Square or anywhere you'd like to be and I've
seen Russians there shopping. They have to take what they see,
their experience here, 'cause we have hundreds of engineers from
their country come and see ours, and they take what they learn
here and they go home, they tell their friends. They have a better
understanding of us as a people and we of them because we go over
there and see their system and their society, acknowledge the
problems they're facing, and have a better understanding of them
as a people and as a country. And if we do that with Russia, we
do that with our European friends, and already allies, the Canadians,
and the Japanese, and now Brazil, of course, as well, partner
on the International Space Station, it only helps, I think. So
that's one of the answers that I try to give to people who don't
understand why we would go in on a project like this with other
countries: NASA's an instrument of foreign policy, and an important
one. But also, of course, the United States of America could've
done this by ourselves; we can afford it, we're very fortunate
to be a very, very well-off country, our economy is strong. But
the value of doing this with other countries, I think, outweighs
the isolationism that would result just from doing it by ourselves.
It's time for America, I think, to really take a leadership role
in the world in terms of helping out and getting everybody into
space together.
Now specifically, in terms of the
United States and Russia, the two countries had worked together
for some four years now on the first phase of the International
Space Station program in preparation for the task that STS-88
is going to kick off. From your point of view, what are the most
valuable lessons that have come out of the four years of the Shuttle/Mir
program?
We've learned how to work with the Russians and that, in particular,
is valuable. We've already had extensive experience with our other
foreign partners and so we rely on that, but working with the
Russians 'cause they are a different culture than we are. One
of the things that we do get before we go to Russia, for example,
and before we work too much with Russia, is we've had cross-cultural
training classes where we learn about the differences in their
culture. And they have a very long, and proud history of their
own: of course there space exploration and their accomplishments
in space we're all familiar with and they're very impressive,
but they do approach things differently than we do. Again, this
is the idea, as we do on a crew, we take people from different
backgrounds and we try to draw on their strengths and learn how
to get along. Well, the same thing now with the International
Space Station: we have a number of different countries, but we
need to learn each other's strengths and weaknesses in order to
deal effectively with each other as we build something in space.
And that will translate, of course, to doing things well together,
understanding each other, on the ground.
In the course of preparing for this
mission, you and your crewmates have had a lot of time to study
and to understand, better than most folks, the overall plans for
assembling the International Space Station on orbit. Laymen might
look at the assembly as simply a series of spaceflights, each
time you go up, plug another piece on to whatever's there, and
come home; that's probably not as simple as it goes. Give us a
sense of the complexity of arranging and executing the job of
building a space station like this, in space.
That's a challenge just to describe. The, simplistically, as
you said, it's a, a matter of bringing modules up and plugging
them together, and we hope it goes that simply; if it does, that
would be good. The complexity involved is in integration of these
different modules across different countries, for example, in
one part, and the other part is getting pieces to fit together,
making sure they'll fit together, that've never touched each other
on the ground. So there will be pieces in orbit while they're
still building new pieces on the ground, and so they'll never
have gotten to fit-check them, as we call it, before they actually
have to fit together in orbit. It will be difficult to make changes
to real hardware, this is big stuff, in orbit, so we need to make
sure that we have that all worked out ahead of time. So the challenge
and the complexity comes in, for example, Zarya, the FGB, now
called, Zarya, is a piece of hardware in Russia which has never
actually touched the Node, or Unity is the name of it, which we
have built here in America. Those two pieces of hardware are going
to go into space and we're going to connect them together and
they're going to fit the first time, they have to, and a lot of
people have worked very hard to make sure they will. So that's
the level of the complexity. If you then add another piece on
top of that which was built after the other ones, then you try
to make sure that everything fits together. Then you have to allocate
your power 'cause your solar arrays are going to come up. You
have to have enough power to run the heaters to keep the thing
warm enough when it's on the cold side and you don't want it to
get too hot when it's on the hot side. So you have to start thinking
"How much power do I have, am I in the right attitude control,
do I have enough propellant for attitude control?" There's a little
bit of atmosphere up high, it's a tenuous atmosphere, but it slowly
brings satellites back to Earth, as we know when Skylab came down
it was because of that. So we have to have enough propellant to
keep it up high enough and we have to know what orbit it's in,
in order for the shuttle to go up and meet it. When you start
putting all this together and tryin' to get, again, across countries,
different languages, different people, as I said early on, it
becomes a daunting task, but one which I'm impressed to see how
well we're doing with.
Let's talk some more of the specifics
of what's going to be involved in your mission. Two major pieces
of hardware, as you've described them: Zarya, a control module
that the Russians will launch, and Unity, a connecting node that
you are bringing up in the shuttle Endeavour with you. For the
benefit of those that don't have a detailed background, describe
these two pieces of hardware and what their roles are in the functioning
of the International Space Station on orbit.
I'll start with the Node. The Node was built here in the United
States of America, and it is, the way I look at it, is it's the
building block, it's the cornerstone of the space station. As
a node-and we've named this node Unity, there'll be other nodes
as well-it's where the other modules come out from which will
end up comprising the International Space Station. The first module
to be connected to the Node is the Russian-built, although, we've
paid for it and they're providing the launch services so it's
a partnership, is a control module, as you mentioned, it's named
Zarya. When it plugs in it will have solar arrays that come out
of it, it'll also have propulsion, so it'll have propellants in
it for attitude control, it'll have computers in it for guidance
and navigation, and it'll have some rudimentary environmental
control systems. So with those elements together, you have a spacecraft
which is self-sufficient in orbit and can take care of itself
in orbit for about a year or so, and so we have that much time
to bring up the next module. A service module, which the Russians
are contributing to the program, and that will then allow permanent
habitation. So that's really the first of the few flights which
really make the station a habitable volume. From there, then of
course we do have the other modules which come up-laboratory,
habitation modules, power modules-which allow us to turn it into
really a first-class, a world-class laboratory.
And starting with your flight, and
throughout the other steps in the assembly, there are hundreds,
literally hundreds of hours of spacewalks that are planned to
build the station, to assemble the pieces on orbit, and to do
maintenance to make sure that it continues to function and can
stay there. More spacewalks are planned here than have been done,
in total, in the history of human spaceflight; is this an achievable
task? What're the big factors that have to be considered as we
plan and execute space station spacewalks?
What we're doing is we're really learning how to take spacewalks
from a special, rare spacewalking feat into a production mode.
And I think that what we'll see as we go along, I hope, is that
we will actually find efficiencies and places where we can cut
back on those hundreds of hours. Spacewalking is an unbelievable
experience, I've got to admit. I've been on one spacewalk, and
I'm looking forward to the three we have, but what we need to
do is to get the station built and then we need to go to work
inside it. The spacewalks are an important part of it, there's
actually been some savings in cost and in design. Some of the
problems they've had have actually been moved over into the spacewalk
world for us to take care of there, and I think they've taken
advantage of the efficiencies there where they can. But looking
at the big picture, we're going to a production mode of EVA, of
spacewalks, so that we can accomplish the task. It's a large task,
but they're already planning out how to do it. We have the new
Neutral Buoyancy Laboratory out at the Sonny Carter Training Facility,
the largest pool in the world. In that pool of water we can train
for these spacewalks. It's large enough for us to have several
modules at once inside it so that we can do training of one crew,
actually two crews at the same time, and one crew on one set of
hardware and another crew on a later flight's hardware. So we're
seeing a gearing-up to the production, and we're also seeing a
move away from where the next crew got whatever they thought they
needed in terms of spacewalk training, and we're moving more into
"This is the training that you have available and make the most
of it." And I think it will certainly be able to do the job.
You mentioned you have had the opportunity
to do a spacewalk in your history as an astronaut, on your first
spaceflight in 1993; how does that experience help you get ready
for the three spacewalks you are to perform on STS-88?
Well, it was tremendously valuable. Back in that time frame,
my crewmate Jerry Ross, actually, is the one who was one of the
people who looked and saw that, with all of this spacewalk requirement
coming up there weren't going to be enough people in the office
with spacewalk experience. So they sponsored a series of what
they called Detailed Test Objectives, an opportunity for some
of the people in the office to go outside who hadn't been outside,
or who were on their first flight. And on my flight, STS-51, Carl
Walz and I were lucky enough to get to go outside and get some
experience that we wouldn't have gotten otherwise. We were able
to put that time to good use testing some of the tools and techniques
that the Hubble Space Telescope repair mission subsequently used
when they went up and put the eyeglasses on the Hubble. And that
experience, one, it gives me a great deal of confidence in the
fact that I know I can go outside and work in space, and work
as a spacewalker, and that's something that everyone always wonders
about for their first spaceflight is, "How am I going to do? How
am I going to feel?" And that went very well for me, so I feel
very confident that I can go outside and do whatever is required.
The spacewalks that we have coming up, the three of them, although
not challenging in detail and in the stress level, I think that
overall we'll end up finding ourselves plenty tired at the end
of the day.
Let me get you to amplify on a couple
of points you raised there. One, about the succession of spacewalks
that've been done over a number of years to get prepared for what's
coming up, testing the construction tools and techniques for the
International Space Station; did they provide all the knowledge
that's needed to prepare you for the spacewalking tasks on this
mission?
Well definitely, 'cause what they've done is they've helped
evaluate and refine in particular, tools that we'll be using when
we're outside. And that's where the value, a lot of the value
does come from, as well as the value of getting people outside,
'cause I can go and talk to, and have, talked to other spacewalkers
about their experiences to make sure I understand what they encountered.
We have, for the space station, some new tools, and we have some
tools that we're using from the Hubble Space Telescope repair
missions. So having that background of experience allows those
of us who are going to be using them for the first time to go
and find out what other people have encountered while they're
using them. I've watched the tapes from previous spaceflights,
for example, and seen some of the techniques that they've used
and seen how well it works. I've talked, of course, to the people
as well, and it's having that experience in the office that is
going to be important, in fact crucial, to making sure that all
of these spacewalks end up being successful.
A couple of times now you've referred
to the spacewalks that have been done to the Hubble Space Telescope.
Of the three spacewalks that you and Jerry Ross are planning on,
to do on this mission, can you give us some sense of the complexity
of what you guys are going to do in comparison to what's become
a fairly famous set of spacewalks in making repairs to, and servicing,
the Hubble Space Telescope?
I think that the Hubble repair mission is probably the closest
analogue we have to our own. It's a large module out in the payload
bay where, with the spacewalkers working around it doing various
tasks, one person at, on the end of the Canadian-built arm, the
other person free-floating on a tether and helping as required
and doing their own set of tasks. The Hubble Space Telescope repair
missions are famous now and very successful, as we know, and in
some ways I think they may have been more procedurally complex
because of the amount of equipment that they were actually taking
out and installing and then bringing back. They were working with
delicate optics and they were working with a number of orbital
replaceable units that the Hubble has. Our tasks are, as I said,
in some ways more straightforward than that but I think in other
ways, as I said, we may find them challenging, too. On the first
spacewalk, we're going to be going outside and our primary task
is to, once the two modules have been put together, to hook up
the power and data cables that connect the Node. The PMAs, the
Pressurized Mating Adapters, which are what other modules will
connect to and move around as we need them. Also back up to the
control module, the Zarya, so we'll be connecting the power and
data so that all these modules talk to each other, share data,
share power back and forth as required. We'll also be removing
thermal covers from the computers that are on the Node, and we'll
be doing some various configuration and general setup tasks to
get things ready for later spaceflights that are coming.
Before we get to the later flights,
or even the later spacewalks, as you've described it so far, the
first spacewalk for you and Jerry Ross sounds almost as if you're
walking around the room plugging things into plugs on the wall,
if somebody moving into a new house. Is it that simple, or can
you give us a sense of whether it's just plugging things together
or what else you have to actually do?
Well, what we have are a set of cables, because at some level
it's as simple as plugging things together. It turns out to do
that in space on a spacewalk can be very tiring and time-consuming
task because there's all sorts of things to consider. On one side
of the space station, with the sun shinning on it, it can be extremely
hot; on the other side of the space in the shadows it can be extremely
cold. By hot and cold I mean over 200 degrees Fahrenheit, under
200 degrees Fahrenheit cold, depending on how long they're in
the attitude. And these connectors then, if you expose metal,
they can get hot very quickly or cold fairly quickly. So we have
thermal covers, we have to remove the thermal covers that are
protecting them. We have dust caps to make sure that no debris
gets inside it, we have to remove the dust caps, and we have to
manage all of this without losing any of the pieces off in space.
When we connect them together, we have to inspect the pins to
make sure that the power and data pins are still intact, we have
to then typically plug them into the Node itself. We have a primary
set of cables, a redundant set of cables, and these are all tied
together, bundled up, and have to be transported and loosened
and released from the Pressurized Mating Adapters and moved over.
So it's an analogue is moving the power cables around in your
house but these are big power cables and big data cables.
You mentioned the Zarya and the
Unity are two pieces that have never touched each other on the
ground. You've got to assume that there is a possibility, however
slight, that once you folks get up there that things aren't going
to work exactly as they've been planned; what is your proposed
response if you plug these two pieces together and they can't
talk to one another?
Well, what we're actually working on is some of those contingency
plans right now. Because what we have are two sets of cables,
as I mentioned on each end of the Unity, the Node, and a primary
set of power and data and a redundant set of power and data. The
same thing for connecting ups the modules together, the Zarya
and the Unity. So if the primary set doesn't work, we'll of course
try the redundant set; and if that doesn't work we have some things
that we can do. In particular we're looking at, for the computer,
the data lines. As I was talking about, where the computers have
to talk to each other, we're bringing up bus analyzers, for example.
The plan is to try to bring up a bus analyzer which we can connect
to the bus. Just as your network administrator at your office
often has problems if the network goes down, they get their bus
analyzers on it and they look at it and they try to understand
what's happening on the bus. If the computers don't come up, well,
we can reboot them, or reload them if required. So we're doing
a lot of things that have some analogy to what you do in an office
here, 'cause that's what we're trying to set up, a laboratory,
an office where people can go to work. So certainly some of the
things that you think about doing here, in that regard, are very,
very similar to what we're trying to do there. I don't like to
think about what would happen if the two pieces of hardware didn't
fit together; they've been very, very careful about making sure
that that won't be the problem.
Two days after the first spacewalk,
you and Jerry Ross go outside again to install some hardware to
the exterior of the station. Can you walk us through that, if
you will, that second spacewalk of the mission.
Jerry Ross will be on the arm on the first spacewalk, and we're
swapping on the second spacewalk, I'll be on the end of the arm
and he'll be free-floating. We'll be helping each other transport
some large communication antennas up to the Node, to Unity, to
be installed, and this will give us an early communications capability
with the Node, and the FGB through the Node, that we wouldn't
have had otherwise. The Russians have a communications capability
with the Zarya, but it's typically only available over a Russian
ground site and there's a limited number of passes every day.
So our primary task on the second spacewalk is to get the Early
Communications system installed, which will give our Mission Control
Center here in Houston, sort of equal access, actually more continuous
access even than we'd otherwise have until much, much further
down the assembly. It will also give the early flight crews a
video teleconferencing capability which they can use to talk to
the investigators on the ground, to talk to the flight control
team and even to talk to their families, which is I'm sure something
that they'll enjoy having. That's the primary task on the second
spacewalk. We'll also be putting up a sunshade…I mentioned about
the extremes of heat, the extremes of temperature, hot and cold,
and we're putting up a sunshade to protect one of the computers
which is located on the outside of the Pressurized Mating Adapter
#1. In addition to that, we'll be putting thermal covers on some
of the trunnion pins-now these are the pins that held the Node,
the Unity, the Node, in the payload bay of the shuttle while we
were launching it. We'll have to put some thermal covers on those
because those big pieces of metal would otherwise be thermal leaks.
And there are a number of mundane tasks. In truth, looking at
a spacewalk it looks very exciting but a lot of what we're doing
is basic construction and some "grunt work". We're out there cleaning
things up, organizing the cables, making sure that things are
ready for the other, as I said, other spaceflights that are going
to come up.
Are you expecting a day will come
when spacewalking will be a mundane activity?
I don't think the activity itself will ever, ever, excuse me,
ever be mundane; some of the tasks may be: plugging cables together
is, in truth, fairly mundane, but the environment that we're doing
it in, I think, will always be very, very exciting.
After this second spacewalk of STS-88,
you are going to be amongst the group of people who will be the
first to go on board the International Space Station; what are
your feelings about having that spot in history?
Well, I think it's pretty neat. I'm very, very excited about
that because there aren't very many times in a career that you
get to be involved on the ground floor of a new project like that
and so it's really a very special opportunity and I feel very
fortunate. Of course, I won't be the first one in, I think, the
Commander will be, of course-but just to get to go in at all is
a real treat and something I'm really looking forward to. I hope
to go back someday, perhaps to be one of those crews and perhaps
to spend a little bit longer time on it, too.
Presumably, since things that must
survive in space are fairly complicated, entering Zarya is not
simply a matter of opening the door and floating in. Describe
for us what you all will be doing to prepare to enter the control
module for the first time, and what you expect to find in there?
What will it be like inside that module?
Well, as I mentioned, I'm not the first one to go in and the
ingress team is Bob and Jerry, and they're really the ones to
give you the details. But I know from participating in the training
that they'll be hooking up, again, fairly mundane tasks in a unique
environment, and that is they'll be hooking up ductwork in order
to make sure that we have good clean air. We joke about who's
going to be the canary to go in to test it out 'cause these modules
may have been closed up for a month or two before we go. So we're
putting in some ductwork in order to make sure that we've got
fresh air inside. We've got some fans, some desiccants; that's
just to get in and then, of course, to open the hatches and make
sure that we have pressure equalized in order to open the hatches
safely. Once we're inside we'll be doing a number of configuration
tasks. One of them is we put the antennas up on the outside, so
we're also going to hook up inside the electronics that allows
those antennas to talk to the Mission Control Center in Houston
and to provide the video teleconferencing. We'll be doing some
stowage transfer. We have a whole lot of stuff in the middeck
of the orbiter, but there wasn't enough room for everything. So
we're actually had some things stored on the Node, in the Node
itself, some of our clothes. We were trying to decide "Should
we put any food in there?" and decided against that. We could
do without some clothes but we didn't want to leave the food in
there 'cause there's always a chance that something might occur
that we don't get to get in there and in that case you might go
hungry. So we'll be getting clothes, we'll be getting swapping
out one of the SAFERs, the Simplified Aid for EVA Rescue. We'll
be bringing a spare computer, we'll be transferring some other
computer equipment as well.
After the day of working inside
the International Space Station there's a third spacewalk on the
timeline for you and for Jerry Ross; tell us what is planned for
that day's activities.
That is the spacewalk which has a couple of specific tasks,
but we've, also left a part of it open for general configuration
and cleanup since we'll be leaving it and it could be months,
it's expected to be months before anybody comes back. So the plan
is to take out a large bag, we call it the Node bag, or the bag
for Unity. That bag has in it a whole lot of tools and foot restraints
and PFR attachment devices that the subsequent crews can use.
By leaving it there it's ready for them and they don't have to
bring it up and back every time on the space shuttle so we save
a lot of payload mass by doing that. That's one of the primary
tasks is putting this large stowage bag on the outside. We're
also going to be unhooking the cables which we used to lock the
two modules together, and I think that's actually a very symbolic
act, because when we do that, then the two modules, Zarya and
Unity, will no longer be able to be separated. They will be permanently
fixed, and very symbolic, I think, as a representation of our
partnership and our commitment to making this happen for the long
term with our international partners.
In describing the tasks that are
planned over three spacewalks, there's a lot of detail that we
haven't gone into but we've heard that there are quite a few things
to be done. In terms of assembly of the entire space station,
how critical is any one step? For instance in your mission, would
the entire planned assembly sequence for the space station have
to be thrown out if you don't do every single thing that you've
described?
Certainly not; it depends on which task it is that doesn't get
done. If we're lucky, and everything goes nominally, which means
normally for us, then, of course, everything will get hooked up
just fine. But then after that there's a number of I said redundant
cables. So if one of them didn't work or you couldn't hook it
up then you'd rely on the other one, and while you're relying
on the other one, the smart people on the ground would be working
on a plan to recover the redundant one. They'd come up with special
tools, special bus analyzers, special power systems, whatever
was needed to regain that redundant capability. So for most of
what we're doing no one thing will bring the space station construction
to a halt. The only exception to that, of course, is mating the
two modules. That's where we're concentrating a lot of our training
time and a lot of our effort to make sure that we can, not only
rendezvous with the Russian Zarya, grab it, and then berth it
with the node Unity. That's, our primary task and, and we're going
to make sure we do it well.
On the day of your mission when
that is to occur, what is your job? Where will Jim Newman be and
how will he be contributing?
We're splitting up the Node install onto the ODS, the Orbiter
Docking System, and then the rendezvous and, Zarya install on
two separate days. As the backup arm operator, I'll be assisting
Nancy Currie as she manipulates the robotic arm, the Canadian-built
robotic arm, and lifts the Node up out of the bay and berths it
onto the ODS. And then the following day, I'll be as one of the
rendezvous team with Bob and Rick Sturckow and Nancy Currie. We'll
be all working together to make sure that we rendezvous safely
with the Zarya, and then again as the backup arm operator, I'll
be helping Nancy, supporting her, as she grabs the, Zarya and
then maneuvers it into position. My primary task that day is to
make sure that the Canadian-built Space Vision System, which is
used to align, precisely aligns these two modules. These modules
are up so high above the payload bay that we can't actually see
with our own eyes, or with any camera view, the mating surface;
and because of that we need to have another method of positioning
the two elements. And if you happen to have or can show at this
time, a picture of the Node, Unity, and the Zarya, you'll see
all these little dots on it. These little dots are actually used
in the computer vision system to figure out where the modules
really are and how to align them precisely. This system will be
used, not only by us, but by subsequent flights to do the same
sort of complicated tasks. Robotic tasks where you don't have
"eyes on" seeing capability for what you're trying to do, and
need a robotic vision, a computer visions method to determine
where two objects are in space and to align them. And that's what
I'll be worrying about on that day, is to make sure that that
system is working, that it's giving us good data, and that we
are able to use it to successfully bring the two modules together.
As we conclude, let's move away
from the detail that we've been talking about and consider more
philosophical question: what in your mind is the meaning of the
International Space Station for the future exploration of space?
Is it necessary to leave Earth? To go to the moon? To go to Mars?
To go somewhere else?
Again, philosophically, it goes back to a little bit of what
we talked about at the beginning. Philosophically, we don't need
to; but we're going to. It's something that people do: we explore,
we go to the places we can, we learn what we can about our environment,
and just looking at the history of humans, as I've seen it appears
to me inevitable that we're going to go. Smart people are always
going to be improving how we get there, and I hope that happens
soon because we need to bring the cost down as quickly as we can
and get more people into space. It's, right now, only a fortunate
few who get to go, but I think that, as we improve our techniques
and find more inexpensive and safer ways to get into space, that
we'll be able to send more and more people into space. The view,
the understanding that we get of the Earth by seeing it with our
own eyes from that perspective, I think, will go a long way towards
helping people understand better that the Earth we live in is
a fragile place. It's huge-it takes only an hour and a half to
go around at 17,500 miles an hour, but nonetheless it's very large
place. But we affect it and you can see that from space. Whether
it's fires in one area of the planet or in the wintertime you
can see lights coming up from amongst the snow but, you know,
there's people down there, and we're affecting our world. So,
philosophically, I see, one, we're going to understand our planet
better as we go there, and just the perspective of having been
there, I think, bringing that back, helps us understand our place
in the universe.
All that said and in mind, as STS-88
starts that new era, how would you like history to remember this
mission?
As a small step on the way to a permanent space station, where
we have a world-class facility. As a small step on the way back
to the moon, to stay, to set up a scientific observatory, to set
up outposts on the moon. As a small step on the way to Mars and
a permanent habitation there. As a small step on the way to the
asteroids, the outer planets; and that, as a small step in our
understanding of the world we live in.