Photo: Ken Thomsley/NASA
|
Storm clouds loom over Atlantis before last
month’s liftoff.
|
The space shuttle
Atlantis finally lifted off its launchpad to
tend to its space-station construction duties. But the
launch delays brought on by concerns that tropical storm
Ernesto might turn into a hurricane and wreak havoc on
the spacecraft raise the question: Why is NASA’s premier
launch facility, and the only NASA facility that
conducts manned launches, located in such a
disaster-prone region?
Hurricane-related problems have become more frequent
at Florida’s Kennedy Space Center in recent years, as
the east coast of the United States transitions from a
decades-long period of historically low storm activity.
In 2004 Hurricane Frances prompted NASA to evacuate
Kennedy, tore hundreds of panels off the Vehicle
Assembly Building, and damaged other structures. In 2005
Hurricane Wilma forced another evacuation of Kennedy.
With the U.S. National Oceanic and Atmospheric
Administration warning that we can expect more
hurricanes with higher winds in the future, there is a
real fear that Kennedy may get hit by a storm that its
buildings simply can’t handle. Irreplaceable facilities
and hardware—including spacecraft—could be lost.
Hurricanes aren’t the only drawback to Kennedy’s
location—salt coming from the nearby Atlantic Ocean
makes corrosion a constant worry, and oppressive
humidity for much of the year makes working conditions difficult.
The old-saw answer to the launch-site question often
heard at Kennedy around launch time goes “Cape Canaveral
is the worst launch site in America, except for all the rest.”
The reason? Kennedy’s southerly location means it is
closer to the equator than the United States’ other
launch sites, so it can pick up more of a boost from
Earth’s rotation when it launches rockets in an easterly
direction. This translates into more payload for the
same amount of fuel. The Atlantic Ocean provides a large
handy patch of uninhabited planet for spent or
malfunctioning booster stages to fall onto. The
Russians, who launch over the steppes of Kazakhstan,
have problems with spent stages, still carrying residual
amounts of toxic propellants, landing near human
outposts. And Kennedy’s coastal location means that
large structures, such as the shuttle’s external tank,
can be brought in by barge.
There is interest outside NASA in exploring
alternative launch locations, especially in desert
areas, where the population density is low, the weather
more predictable, and corrosion is not a problem because
of the dry air. California’s Mojave Desert—where NASA
has its backup shuttle landing site and where test pilot
Chuck Yeager broke the sound barrier in October 1947—is
one such place. In 2004, the Federal Aviation
Administration certified the Mojave Airport as a
spaceport, allowing horizontally launched reusable
spacecraft to take off from there. So far only Burt
Rutan’s Anasari X-Prize winning SpaceShipOne has
managed to actually leave the atmosphere from the Mojave
site. Private interests are also attempting to establish
a new suborbital and orbital launch site along the Cape
Breton coast of Nova Scotia, Canada.
It is unlikely that NASA will ever willingly relocate
from Kennedy to somewhere like the Mojave—if nothing
else, there is simply too much infrastructure, aging
though it is, which the agency can’t afford to replace
with its normal operating budgets. But if a really big
hurricane ever made a direct hit on Cape Canaveral, the
U.S. Congress would be forced to pay for replacing much
of this infrastructure anyway. If it lacked the
political will to do so, the U.S. manned space program
might be abandoned altogether. Before such a disaster
ever befalls NASA, it should think again about whether
Cape Canaveral really is the worst location in America,
except for all the rest. Newly appointed director of the
Kennedy Space Center, William Parsons, should consider
making the investigation of new manned space-flight
launch sites a priority of his administration.
The editorial content of IEEE Spectrum magazine
does not reflect official positions of the IEEE or
its organizational units. Please address comments to
Forum at n.hantman@ieee.org