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 ó 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 an invention:

Air Tunnel
A means of sending trains through the air.

 

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