JF Ptak Science Books Quick Post
Well, what is really was, or what this was intended to be in this memory of a possible aviation future--or naval future, as this airship was really a flying boat, an "amphibian, a dirigible, a gyrocopter ....an airplane". A ship, really, trying to judge the size of the thing by the position of the portholes/windows--the thing was big, and the "single wing, rotating disk-shaped affair filled with gas or hot air" was even bigger. We read here that the disk was "turned by a gasoline engine" which was located in the center of the ship, leaving still plenty of room for "quarters" for the crew and passengers, making for what the inventor thought was an easy ascent and then, using the lifting device as a parachute, and then having a parachute-y descent, soft and simple.
Its hard to judge the size of the machine, but it looks like there are 40-50 portholes or windows running the length of the ship, and so I'd guess that the fuselage of the craft was 150 feet long, which was about half of its overall length, making it about 300 feet overall. The disk then could be 150-200 feet in diameter, giving it an area of close to one acre. Big.