3D analysis shows how helicopter pilots could have mixed up jets in DCA crash
From the perspective of the helicopter cockpit, the lights of the incoming American Airlines jet could have also been ...
BBC2 年
Design, build and print your own 3D model plane
Conánn shows how simple it is to download your plane for 3D printing. Watch as he explains how to save the design and then print it with the software that comes with your 3D printer. He also ...