 |
| Pocket-size drone that can fold up |
inspired by origami, which can unfold itself automatically
and take flight within a fraction of a second.
A large number of these quadcopters, the size of an outstretched palm, could be released over a disaster zone to take photographs and make contact with survivors.
When the device is not in use, the arms, which are made of fibre glass and light, yet rigid polyester, fold up into a trapezoid. When switched on, force of the propellers causes the arms to unfold horizontally. Then,
magnets keep the arms locked into position.
For the drone to remain stable during flight, two
propellers (diagonally across from each other) spin in
opposite directions from the other two. Propellers all spin
in the same direction at first while the drone unfolds, but
a sensor detects when the arms have locked into position,
and within 50 milliseconds, direction of two of the rotors
is reversed, and the drone is ready to take flight.
0 comments:
Post a Comment