Before further pants-wetting takes place over the “space plane”
antics in the Mojave, and before any rich fan plunks down a hundred
or two hundred thousand for a seat when the act becomes
commonplace, let’s look at what these “space flights” really
are.
They are hi-lofts, not orbital space flights. Powered shots
straight up from a launch ship at forty-some thousand feet that
carries the rocket-powered craft up beyond the atmosphere to around
60 miles, an area we call “space.” But the Rutan ship is not to fly
in space. It is to fall back into the atmosphere, and pick up
enough lift for gliding flight that takes it back to a desert
landing. The view from 60 miles is not that of a spectacular earth
sliding beneath craft and viewer. It is a quick look straight down
at an un-moving spot of California. And a few minutes of
weightlessness as gravity reasserts its grasp.
Chances are the hour-long tethered flight up to the 40,000 foot
launch height is more fun, and more scenic.
None of which is to take away from the private enterprise
concept of spaceflight. Flight in space. That, too, may
come someday. And it warms the cockels of the “we can do it better
than NASA” heart to witness the effort. Rutan has already carved
his place in the annals of aeronautics with his
round-the-world-without-refueling flight in his Voyager
craft. But Rutan, Paul Allen, and the others will have to bend a
lot more cash and genius into the effort before true orbital flight
or even ballistic flight happens.
What is lacking so far is some 17,000 plus miles an hour in
orbital speed. And the capacity to slam back into the earth
atmosphere without coming apart. And a means of returning to some
place on earth where we are liked, or at least ignored.
Before plunking down a hundred thou or so for a ticket to get
hurled straight up, consider that a chimpanzee did it for bananas
nearly 50 years ago.