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freebeard · 10-23-2020, 02:28 PM

R. B. Fuller's Dymaxions used periscopes. The first one had a free-standing external mirror with flush viewports:

http://best-car-reviews.com/wp-conte...-6-626x382.jpg

Later versions had a prismatic periscope in a blister:

https://lisawallerrogers.files.wordp...maxion-car.jpg

The later version doesn't have the drag of the tubular stalk, but the free-standing mirror probably has a better view.

10-23-2020, 02:28 PM	#2 (permalink)
freebeard Master EcoModder Join Date: Aug 2012 Location: northwest of normal Posts: 28,720 Thanks: 8,151 Thanked 8,934 Times in 7,376 Posts	R. B. Fuller's Dymaxions used periscopes. The first one had a free-standing external mirror with flush viewports: http://best-car-reviews.com/wp-conte...-6-626x382.jpg Later versions had a prismatic periscope in a blister: https://lisawallerrogers.files.wordp...maxion-car.jpg The later version doesn't have the drag of the tubular stalk, but the free-standing mirror probably has a better view. __________________ . .Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster ____________________ . .Three conspiracy theorists walk into a bar --You can't say that is a coincidence.