Will we reach Mars?
Andrei KISLYAKOV
The title of this article could be continued: Will we be able to come
back? It may take years to find an answer, but the search has already
been launched.
During the next month, the Institute of Bio-Medical Problems will
conduct a medical experiment to develop non-surgical methods of
treatment for diseases that cosmonauts may develop during a long journey
to Mars.
Hardly anything can prevent mankind from launching piloted flights to
other planets. But alongside technicalities, it will have to resolve the
problem of preserving the life and health of a man who will be the most
precious and vulnerable link in a Martian or any other mission.
Previous studies of the bio-medical problems of manned space flights
have focused on the rigours of long orbital flights. If a cosmonaut on,
for example, the International Space Station (ISS) requires surgery, or
the crew develops a psychological problem, or some vital part of the
station’s life-support system (LSS) fails, it is possible to stop the
flight and return the crew very quickly.
But this is not possible on longer-range space missions. This is why
it is essential to work out a comprehensive package of measures that
will allow cosmonauts to be in space for a long time, and safely return
home.
Regrettably, there are more questions than answers when it comes to
long flights. Because a mission to Mars would last years, it is
necessary to develop a special, expensive LSS, a kind of an autonomous
regenerative model with closed hydrogen and water cycles.
Systems for regenerating air condensate, urine, and sanitary water
were tested on the Soviet space station Mir and the International Space
Station, but they still require periodic replenishment of some elements.
But technical problems are easier to solve than psychological ones.
Cosmonauts will face huge psychological pressures, from the
remoteness of the Earth; living for a long period in a confined space;
micro-gravitation; crew cooperation problems; numerous assignments both
on board and in open space; unpredictable situations; high risks; and a
sense of responsibility for the mission.
Command centres on Earth have traditionally helped space crews to
resolve these problems. But a signal from Earth would take 40 minutes to
reach Mars, when decisions may have to be taken in seconds. It will also
be difficult to organise video sessions with families or send letters,
greetings, newspapers and presents. There may be no elementary radio
communication for quite a time.
The question of engineering psychology - the interaction of man and
machine in control and communication systems - is another unknown. The
crew will have to continuously service computers, and deal with a host
of other systems.
It is necessary to develop machines that will enable their operators
to monitor indicators minute by minute, day after day, and month after
month. They will have to make vital decisions based on their analysis of
this information.
During long-distance space flights, cosmonauts should have a good
sense of time, and an ability to control the pace of their activities.
They should develop resistance to inconvenience and monotony, and be
ready for adequate respond to danger in an emergency.
RIA Novosti |