#Today, SpaceX tested a Raptor rocket engine, fired at a water-cooled "sandwich" of steel plates, designed to protect the launch pad during liftoff and mitigate the rock tornado experienced during Starship's launch on April 20
The Transwing design offers PteroDynamics X-P4, a compact and stable VTOL, with an exceptionally large wingspan in cruise mode for outstanding efficiency
[video, read more: https://t.co/ZZE8g514tH]