Through the Air Tunnel by Harl Vincent:
Science Fiction Inventions, Technology and Ideas
"Our talented author has given us a real treat
in the present story, which is as daring as
it is unusual. We may safely say that nothing
simitar to it has appeared in print before.
"Aviation engineers appreciate the fact that
there is a limit as to how fast aircraft can move
through the air. If the speed gets too great, let
us say, above 350 miles an hour, the air resistance becomes so terrific that the amount of
power required to move the ship through the
air makes the cost prohibitive. For that reason,
engineers even now are busying themselves to
devise machines that can go up so high into the
upper atmosphere, where the resistance of the
air is considerably diminished.
(Air Wonder Stories, October 1929)
"In recent years, engineers also have been devising means, such as subways, whereby trains
could be sent through a tube evacuated of all
air — the train would then move in a vacuum.
The cost of building such a tunnel, however,
and the delay in getting the passengers in and
out, made the scheme impractical.
"The author of this story with his characteristic boldness, has suggested an entirely new
plan, which is based upon good science, and
there ts no telling but some day the problem
may be solved in some such manner." Select
A means of sending trains through the air.
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