RA809, the Baynes "Bat", under tow, probably piloted by Flt Lt Robert Kronfeld. The 33ft span glider was a 1/3 scale flying model of a proposed "flying", or gliding, tank. In 1941 Baynes proposed that most armoured vehicles, even up to an 816-ton (8,630kg) tank, could be transported by air with the addition of a quickly detachable “all-wing” section. A 1/3rd-scale manned flying model of the “Carrier Wing” (aka Bat) was built by Slingsby and tested in the summer of 1943. The idea was not adopted.