micro aerial vehicles
TRANSCRIPT
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BASAVAKALYAN ENGINEERING COLLEGEBASAVAKALYAN
DEPARTMENT OF MECHANICAL ENGINEERING
Seminar on:
“MICRO AIR VEHICLES”
GUIDED BYProf: PRAVEEN.B
PRASENTED BY:PRAVEENKUMARUSN: 3bk12me066
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CONTENTS
CONTENTS•Introduction• Application• Parts of MAV• Kelvin's idea•Working of wings •Propulsion •Communication•Navigation •Conclusion
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INTRODUCTION
What are MAVs ?
Micro Aerial Vehicles
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Micro Aerial Vehicles (MAV)
Smaller than traditional unmanned aerial vehicle (UAV)
Some are toys, however mainly military development
Helicopters, planes, hovercrafts, and others
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WHY MAV’S? WHY NOT SOMETHING BIGGER?
Keeps security personnel out of harms by providing situational awareness right down to platoon level.
Direct connectivity
Can be individually controlled
Can be used for a wide range of new missions _ (even unthought before)
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What can MAVs do?
Remote reconnaissance and targeting
Remote observation of environmenst
Unmanned mission completion
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APPLICATIONS
Reconnaissance
Surveillance
Defence applications
Weather forecast
Wildlife study &photography
Targeting
Border surveillance
Traffic monitoring
Tracking criminals & illegal activities
Biochemical sensing
inspection of pipes
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OVER THE HILL RECONNAISSANCE
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MAV flight regime compared with existing flight vehicles
wingspan
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VIDEO
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MAIN SUB SYSTEMS
1. FLIGHT CONTROL
2. PROPULSION SYSTEM
3. COMMUNICATION SYSTEM
4. GUIDANCE &NAVIGATION
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SHAPE OF MAVs
Fixed wing air craft: names are like Micro Star, Batplane ,wasp.
Rotary wing aircraft: Microcraft iSTAR,Micor.
Flapping wing aircraft:Entompher, Microbat.etc
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KELVIN’S IDEA
Kelvin’s circulation theorem the net circulation around the insect body is zero
Equal and opposite circulation cause lift.
In ordinary insects the build up of lift co efficient delayed
One species of insects , Encarsia Formosa which avoids any delay in lift and built up max lift
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WORKING PRINCIPLE
Air comes straight at the wing
Air comes straight at the wing bends around it and then leaves straight behind wingThere is no net reaction on the air so there can no lift .
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Air passing over the wing
Fig shows the streamline air over the wing
To generate lift wing must divert air down .
The air passes over the wing and bent down
Changes in the air momentum
Will results in force on the wing .
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Inflatable wing
Distend (fill) with air or gas
Application in UAV, military
To stow the wings
Can be launched from gun or aircraft
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Advantages of aircrafts with inflatable wings
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Low mass
Low power requirements
High reusability
High stability and control
High lift and slow landing speed
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Disadvantages
They are not self powered
Cannot launch from ground
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PROPULSION SYSTEM
Propulsion system alone consumes 90% of total power
Lithium alkaline batteries Reciprocating chemical muscle Lithium battery that recharges
using solar energy and fuel cells are also future prospects
Self consuming systems
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COMMUNICATION SYSTEM
A video/still camera,
various sensors,
micro processors,
Transducers
& an omni directional antennae
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GUIDANCE AND NAVIGATION
A combination of GPS+inertial sensing is ideal
Geographical information system to provide a map for infrastructure would be great
Pressure sensors
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DO YOU THINK MAVs ARE HEAVY
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What are the benefits of MAV Technology?
Lower cost per unit
Minimal training required
Minimal manpower required
Military effectiveness
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What has been done?
Autonomous flight
3D Mapping
Mission completion
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Mass Breakdown
Flight Controls
receiver 8
processor 2
antenna 3
13 g
Power
motor 26
battery 40
66 g
Tail
actuators 0.75
1.5 g
Flapping Wing Mechanism
wings 2
four bar 3
5 g
Available Payload90 -85.5
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What is being done?
Improvements to design of aircrafts
Implementation in real world / military
NUI(natural user interface)-based control
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What is the future of MAVs?
Complete military implementation
Multiple interfaces for control
Manpower reduction by vast amounts
Better toys!
+ =
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CONCLUSION
MAVs are new technology that having important role in defense
With complete development of MAVs the new revolution will takes place in army
Reduce in crime
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REFERENCES:
GOOGLE WWW.123SEMINARONLY.COM
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Thank You
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Any Questions