来自MSN1 个月
What Happened To Ring Wing Planes?
The concept of ring wing aircraft, with circular closed wings, promised revolutionary benefits like enhanced lift, fuel ...
来自MSN4 天
Today in Aviation History: First Flight of the Lockheed P-38 Lightning
On this day in aviation history, January 27, 1939, the Lockheed XP-38 made its first flight. Developed under great secrecy, ...