Blackburn B-20 Another British flying boat

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Tiger Tim

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1920-1950 British aircraft companies seemed desperately worried that component manufacturers would go broke without their design efforts, it seems.

To be fair, it seems like at the time retractable floats were hoped to be the next thing in seaplane design so I guess someone had to commit and try it out for real since Bill Barnes wasn’t sharing any data…
 

Aesquire

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Jul 28, 2014
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The Blackburn worked. For values of work.

The problem is the extra weight of the retraction gear PLUS 2 watertight sheet metal nearly full length decks, offset the reduction in drag. A deep hull like a Martin Mariner weighs about the same and gives you a lot more hull volume with not as much drag as you'd expect, and presumably better sea keeping. The B-20 may have been pretty good, but the Mariner has a well proven record.
 
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