On this day in aviation history, February 28, 1947, a North American P-82 Twin Mustang with the name “Betty Jo” completes the ...

Chengdu team arranges elements in a tightly coupled circular array for omnidirectional antenna that operates on broad range of frequencies.

The Royal Marines Commandos of the British Royal Navy, dating back to 1664, are an elite amphibious expeditionary force. The marine infantry forces of NATO countries, their age and size The huge ...