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Churchill,
Manitoba - The land of bark canoes and tamarack toboggans is Canada's rocket launch
capital!
Lying on the western shores of Hudson Bay, about 1000
km north of Winnipeg, Churchill, Manitoba is one of the many cities in Canada
with a significant (almost 40%) Aboriginal population. It is made up predominantly
of Chippewa and Swampy Cree. Historically, these peoples would set up temporary
villages in and around the site now occupied by the city. Churchill is known as
the "Land of Nanuk" (the polar bear), and residents of the city still
occasionally see polar bears walking their streets. They also share the community
with beluga whales - which feed and calve in the harbour during the summer - seals,
caribou and rare migrating birds. It is a beautiful area surrounded by clean water,
unspoiled land and fresh air, and yet visitors are often drawn here because of
the sky; at night the Aurora Borealis is spectacular.
Churchill offers
another advantage with respect to the heavens; its northern location makes it
an ideal place from which to launch low earth orbit satellites and scientific
instruments. In fact, between 1957 and 1985 Churchill was home to the Rocket Research
Range, a project jointly funded by Canada's National Research Council and the
National Aviation and Space Administration (NASA) in the United States. For more
than 25 years the rocket range was used over 3,500 times to launch research and
meteorological equipment using sounding rockets.
Sounding rockets are
used to carry out short-term experiments at high (but not orbital) altitudes.
The rockets get high enough to escape most of the vibration effect of the Earth;
they operate in what is called a microgravity environment. They are launched along
an arc-shaped trajectory, which usually allows the rocket to remain in the microgravity
environment anywhere from 5 to 20 minutes as it reaches the top of its trajectory;
this is usually the point at which its payload experiments are carried out.
While the Rocket Range closed in 1985, there have been a number of projects
proposed for the site. One of them is Project Skywalker, a proposed commercial
sub-orbital Reusable Launch Vehicle (RLV) that will be used to carry researchers
to an altitude of at least 100km. Although no new projects have been approved
for the site as yet, Churchill may soon once again help us in our understanding
of our planet and the space beyond it. |