Winged inspections taking flight
A new device called a Micro-Air Vehicle (MAV) is being developed that can help make close inspections of dangerous or difficult to reach areas.
Taking its looks and abilities from an insect, the MAV is only six-inches long and has flapping wings. Its body holds the motor and power pack, as well as sensors and electronics. After it is programmed, the MAV can operate on its own and fly a mission without radio control.
 |
|
Micro-light: Dr Rafal Zbikowski displays one of the first models of a fly’s wing. The spars are made from fibre glass |
This research will have a number of benefits including for use by emergency services in a natural disaster such as an earthquake. The MAV could also help industries that require the close inspection of the insides of pipes and large machines. In addition, the military could use it to fly reconnaissance missions to inspect buildings before troops are sent in.
Two project teams working together and funded by the Engineering and Physical Science Research Council are leading the research – one at Cranfield University led by control engineer Dr Rafal Zbikowski, and the other at British Aerospace. There are also specialists from Cambridge University with industrial support from GKN-Westland Helicopters.
There are still a number of challenges to face such as the aerodynamics of insect flight. Perhaps the most daunting is the flapping wings. Research has shown that these are better than fixed-wing or mini-helicopter type wings because they allow for agility and versatility at low speeds, a smaller power requirement, the ability to hover and potentially little noise if the wings beat at less than 20 times a second.
In order to use the flapping wings, the researchers must find a durable yet lightweight material that will hold up with rapid flapping. They must also be the right size, shape and texture, able to withstand a range of possible temperatures and conditions.
By the end of the three-year project, the teams expect to have a scaled-down version to the right size and weight with a working power mechanism.
Published by Engineering, London Underground Limited,
30 The South Colonnade, Canary Wharf, London E14 5EU, in association with
Financial & Business Publications, Regent House, 24-25 Nutford Place, London W1H 5YN
© London Underground Limited, 2000
For further information,
 T: +44 (0)20-7569 3040 F: +44(0)20-7569 3041
|
