Flying RobotRobot flying
It was a period when researchers thought that fly screens worked much like aircraft screens. Up and down movement of its blades would produce buoyancy because the wind moving over the blade would follow its slightly inclined plane while down movement would lower the wind over the blade and raise it just enough for the plane to remain in the vertical position (This is a simplistic and therefore partial account of the complex Bernoulli aerodynamic nature of aeroplane buoyancy, but is sufficient for the purpose of this article).
However, in the 90s, a petrologist called Charles Ellington chose to test this hypothesis by placing various bugs in real windtunnels. Just the traditional buoyancy they were measuring was not enough to explain their flightworthiness. Ellington's research showed that a sturdy tip vertebra is the most likely way to explain how bugs remain in the air.
As soon as whirl is build, it turns alongside wings towards top towards outside and pulls off wind in order to prevent flow-off. I think this illustrates how buoyancy is generated by flying bugs, but not how they are able to perform complex manoeuvres such as fast cornering. This may be due to how an entomologist can turn a leaf to easily get the whirl off for additional buoyancy so that the entomologist can reverse it.
This is where this new flying robot comes in. For a long time Matej Karasek from Delft University of Technology in the Netherlands has been fascinated by the agile flying insect and uses it as inspirational material for the development of tailless flying wings robotics. "Developing a blade drive system that allows the user to control the rotation of the wings around the three axis of the human bodies separately was the biggest challenge," he says.
It had to be light enough for the robot to wear it. It was the fly of the fruiting fly that provided the keys. So Karasek had his robot programed to imitate her hypothetical flying bio-mechanics. This worked like a charme, and the outcome is the flying robot DelFly robot DelFly Nucleus.
Aerofoil of the robot beats 17x per second, which generates buoyancy and enables the robot to control the flying path by slightly adjusting the aerofoil movement. He can float and float in any way (upwards, downwards, forwards, backwards and sideways), as well as make overheight turns and 360-degree somersaults, similar to straps or barrels - just like a flies, even though he is much bigger than an insect. Even though he is a very small fish, he can also float and float in any way.
In addition, it is characterized by outstanding energy performance, making it possible to float for five minute or fly more than one kilometre with a cargo. "Unlike animals, we had full command of what was going on in the robot's brain," says Karasek. "It enabled us to find and describe a new static dynamic air force that supports the fly...in controlling their course during these fast turns.
" Therefore, no feed-back mechanisms are required for fruiting fly to carry out their avoidance manoeuvres as quickly as possible. "Robots have opened up new opportunities for the study of flying insects," says Karasek. "However, it is also a novel flying robot with unparalleled abilities.