来自MSN7 天
Spy Games: When the CIA Created a Covert Listening Dragonfly
In the 1970s, the CIA engineered the Insectothopter, a groundbreaking mini UAV designed as a covert listening device. Modeled ...
BBC4 年
The stealthy little drones that fly like insects
Engineers admire the dragonfly's flying ability, but have found it impossible to mimic When Storm Ciara swept across the UK in February, Alex Caccia was strolling on Oxford's Port Meadow watching ...