Spherical Flying Machine
[YouTube Cl... ...Force, but you've got to admit that the spherical flying machine developed by Japan Ministry of Defense... ...ng an ability to propel itself forward with wings flying at speeds up to 40 mph. There are thr... ...into mid-air. The cost of parts for the *strong clas...
https://www.neatorama.com/2012/06/16/spherical-flying-machine/
