Developed by CIA’s Office of Research and Development in the 1970s, this micro unmanned aerial vehicle (UAV) was the first flight of an insect-sized vehicle (insectothopter). It was intended to prove the concept of such miniaturized platforms for intelligence collection.
Insectothopter had a miniature engine to move the wings up and down. A small amount of gas was used to drive the engine, and the excess was vented out the rear for extra thrust. The flight tests were impressive. However, control in any kind of crosswind proved too difficult.
6 cm x 9 cm x 1.5 cm
(L x W x H)
Insectothopter: The Bug-Carrying Bug
If you were told that a company had just invented a robotic dragonfly and it was flying around today, you might not be impressed. However, CIA developed this “Insectothopter” and flew it in the 1970s!
CIA had developed a miniature listening device that needed a delivery system, so the Agency’s scientists considered building a mechanical bumblebee to carry it. However, they found that the bumblebee was erratic in flight and scrapped the idea. Then an amateur entomologist on the project suggested a dragonfly, and this prototype was built.
Crafted by a watchmaker, Insectothopter had a miniature fluidic oscillator to propel the wings up and down at the proper rate to provide both lift and thrust. A small amount of propellant produced gas to drive the oscillator, and extra thrust came from the excess gas vented out the rear.
A laser beam provided guidance and acted as the data link for the audio sensor payload. This is the first flight of the insect-sized unmanned aerial vehicle called Insectothopter. Flight tests were impressive. Performance measures indicated a range of 200 meters and flight time of 60 seconds with a 1-gram launch weight.
But because control in even a slight crosswind proved too difficult to overcome, Insectothopter never became operational.