Video: DARPA and Boeing’s DiscRotor Retractable-Blade Heliplane Torn between a high-speed plane and a hovering helicopter? Why should you have to choose? The CSAR DiscRotor, a collaboration between Boeing and DARPA, was approved back in 2008. It’s taken two years to get an animated video of the insane retractable-wing heliplane, but all that time and money has clearly been worth it, because this t
![Video: DARPA and Boeing's DiscRotor Retractable-Blade Heliplane](https://cdn-ak-scissors.b.st-hatena.com/image/square/fa47c05a46c8bea007e6fdba8f30a200063ffcdc/height=288;version=1;width=512/https%3A%2F%2Fwww.popsci.com%2Fwp-content%2Fuploads%2F2019%2F03%2F18%2FSWGUAYZ3DHCIWGIW6PE5O5DCK4.jpg)