30-11-2012, 11:24 AM
MICRO AIR VEHICLES(MAVs) WITH FLAPPING WINGS
[attachment=41797]
What are Micro Air Vehicles?
A Micro Air Vehicle (MAV), or micro aerial vehicle, is a class of unmanned vehicles (UAV).
DARPA(Defense Advanced Research Project Agency) defines- less than 6 inch(15cm) and 4 ounce weight.
Semi-autonomous.
Remote observation of hazardous environments.
Military capability and Fully-functional.
Lift for flight is made with rotary wings and flapping wings.
Missions of MAV
Military
Surveillance, Reconnaissance,tagging,targetting
Biochemical sensing.
Urban
Surveillance,Hostage rescue, Border patrol
Commercial
Traffic monitoring
Fire & rescue
Forestry& wild life survey
Real-estate photography
MAV REQUIREMENTS
High image resolution.
Lightweight.
Affordable.
Secret/hidden.
Safe & simple to operate.
Easy to repair.
Rapid electronic connectivity.
DESIGN ASPECTS
Must remain within the line of sight of a small base station.
Beyond the line of sight autonomous navigation.
Navigations such as dead reckoning, inertial navigation, and the Global Positioning System (GPS) can be used.
FLAPPING WING AND ITS FEATURES
Lift is generated in two ways,
(1) Air flow created by the vehicle speed.
(2) Wing flapping.
Kelvin’s circulation theorem, the net circulation around the insect body is zero.
Equal & opposite circulation causes lift.
Ordinary insects, this build-up of high lift coefficient is delayed.
One species of insects, Encarsia Formosa, which avoid any delay in built up of maximum lift.
FUTURE WORK
Mechanism that simulates Wies Fogh’s model.
Use lighter materials, for the frame of MAV,the controllers, the gyroscope for stabilizing.
Developing small power sources.
Designs to achieve high flight speeds better stability in air.
The overall aim will be to minimize the size and weight, to increase the speed, and to maximize the battery life for MAV.
CONCLUSIONS
Time of MAVs have arrived. Micro Air Vehicles are the new technology by which a variety of operations are done.
Flapping mechanism have more lift compared to fixed wing mechanism. Also it can increase the lift without increasing the vehicle speed.
Simple flapping, does not generate sufficient lift.
In the seminar, we have tried to highlight the recent research and development in establishing a flexible-wing-based technology for MAVs.
[attachment=41797]
What are Micro Air Vehicles?
A Micro Air Vehicle (MAV), or micro aerial vehicle, is a class of unmanned vehicles (UAV).
DARPA(Defense Advanced Research Project Agency) defines- less than 6 inch(15cm) and 4 ounce weight.
Semi-autonomous.
Remote observation of hazardous environments.
Military capability and Fully-functional.
Lift for flight is made with rotary wings and flapping wings.
Missions of MAV
Military
Surveillance, Reconnaissance,tagging,targetting
Biochemical sensing.
Urban
Surveillance,Hostage rescue, Border patrol
Commercial
Traffic monitoring
Fire & rescue
Forestry& wild life survey
Real-estate photography
MAV REQUIREMENTS
High image resolution.
Lightweight.
Affordable.
Secret/hidden.
Safe & simple to operate.
Easy to repair.
Rapid electronic connectivity.
DESIGN ASPECTS
Must remain within the line of sight of a small base station.
Beyond the line of sight autonomous navigation.
Navigations such as dead reckoning, inertial navigation, and the Global Positioning System (GPS) can be used.
FLAPPING WING AND ITS FEATURES
Lift is generated in two ways,
(1) Air flow created by the vehicle speed.
(2) Wing flapping.
Kelvin’s circulation theorem, the net circulation around the insect body is zero.
Equal & opposite circulation causes lift.
Ordinary insects, this build-up of high lift coefficient is delayed.
One species of insects, Encarsia Formosa, which avoid any delay in built up of maximum lift.
FUTURE WORK
Mechanism that simulates Wies Fogh’s model.
Use lighter materials, for the frame of MAV,the controllers, the gyroscope for stabilizing.
Developing small power sources.
Designs to achieve high flight speeds better stability in air.
The overall aim will be to minimize the size and weight, to increase the speed, and to maximize the battery life for MAV.
CONCLUSIONS
Time of MAVs have arrived. Micro Air Vehicles are the new technology by which a variety of operations are done.
Flapping mechanism have more lift compared to fixed wing mechanism. Also it can increase the lift without increasing the vehicle speed.
Simple flapping, does not generate sufficient lift.
In the seminar, we have tried to highlight the recent research and development in establishing a flexible-wing-based technology for MAVs.