JF Ptak Science Books Quick Posts
Dr. William W. Christmas (1865-1960) a long-lived deep pioneer in the history of early aviation, proposed this interesting, streamlined, and odd underground airport, the image appearing in Popular Science Monthly in April 1935 (volume 126 for January-June 1935). The numerous levels seem to establish a subway line, four lanes of vehicular traffic, a mall-type concourse, then perhaps something else, topped by a rotating platform of aircraft, above which was a pedestrian/passenger concourse above which was an access area for the aircraft. I'm not sure why this was designed, but it is certainly engaging--and compact.
Here's a photo from Smithsonian of Dr. Christmas and a cross section of the model of the airport:
[Source: https://www.flickr.com/photos/publicresourceorg/493767086]
There are numerous posts on unusual designs for airports, such as the floating and rooftop varieties shown below--just enter "airport" in the search box at left for a list of other bits of imaginative engineering:
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