On the subject of aircraft launched from a submarine, a rotary winged kite was developed in Germany during WWII for reconnaissance. Compact when disassembled, i

On the subject of aircraft launched from a submarine, a rotary winged kite was developed in Germany during WWII for reconnaissance. Compact when disassembled, it could be deployed in minutes, tethered to the sub while it motored upwind, allowing a lookout to see much farther over the horizon: https://en.wikipedia.org/wiki/Focke-Achgelis_Fa_330 https://en.wikipedia.org/wiki/Focke-Achgelis_Fa_330 Examples are on display at many museums, including the Deutsches Technikmuseum in Berlin.