WWII Hillson Bi-mono experimental aircraft designed to test the slip-wing designed where the upper wing can be jettisoned after takeoff.
https://diqn32j8nouaz.cloudfront.net...o_fullsize.jpg
https://diqn32j8nouaz.cloudfront.net...1_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...325#post230975
https://www.homemadetools.net/forum/...634#post234937
https://www.homemadetools.net/forum/...806#post175135
https://www.homemadetools.net/forum/...687#post235040
https://www.homemadetools.net/forum/...494#post234538
