BTTDB

T-64-(larger)

Back to the Drawing Board: the T-64 Tank

Although its ‘high-tech’ features, such as an auto-loader for the main armament and its ultra-compact multi-fuel engine, were superficially impressive, they proved to be complex to maintain and highly unreliable.

Supermarine-Nighthawk-2

Back to the Drawing Board: The Supermarine Nighthawk

One of the oddest inventions was the Supermarine Nighthawk, a massive twin-engine quadruplane night fighter designed to fly patrols of anything up to 18 hours at a time, with a fully-enclosed heated cockpit and even a small sleeping berth.

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