BASAVAKALYAN ENGINEERING COLLEGEBASAVAKALYAN

DEPARTMENT OF MECHANICAL ENGINEERING

Seminar on:

“MICRO AIR VEHICLES”

GUIDED BYProf: PRAVEEN.B

PRASENTED BY:PRAVEENKUMARUSN: 3bk12me066

CONTENTS

CONTENTS•Introduction• Application• Parts of MAV• Kelvin's idea•Working of wings •Propulsion •Communication•Navigation •Conclusion

INTRODUCTION

What are MAVs ?

Micro Aerial Vehicles

Micro Aerial Vehicles (MAV)

Smaller than traditional unmanned aerial vehicle (UAV)

Some are toys, however mainly military development

Helicopters, planes, hovercrafts, and others

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)

What can MAVs do?

Remote reconnaissance and targeting

Remote observation of environmenst

Unmanned mission completion

APPLICATIONS

Reconnaissance

Surveillance

Defence applications

Weather forecast

Wildlife study &photography

Targeting

Border surveillance

Traffic monitoring

Tracking criminals & illegal activities

Biochemical sensing

inspection of pipes

OVER THE HILL RECONNAISSANCE

MAV flight regime compared with existing flight vehicles

wingspan

VIDEO

MAIN SUB SYSTEMS

1. FLIGHT CONTROL

2. PROPULSION SYSTEM

3. COMMUNICATION SYSTEM

4. GUIDANCE &NAVIGATION

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

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

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 .

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 .

Inflatable wing

Distend (fill) with air or gas

Application in UAV, military

To stow the wings

Can be launched from gun or aircraft

Advantages of aircrafts with inflatable wings

Low mass

Low power requirements

High reusability

High stability and control

High lift and slow landing speed

Disadvantages

They are not self powered

Cannot launch from ground

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

COMMUNICATION SYSTEM

A video/still camera,

various sensors,

micro processors,

Transducers

& an omni directional antennae

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

DO YOU THINK MAVs ARE HEAVY

What are the benefits of MAV Technology?

Lower cost per unit

Minimal training required

Minimal manpower required

Military effectiveness

What has been done?

Autonomous flight

3D Mapping

Mission completion

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

What is being done?

Improvements to design of aircrafts

Implementation in real world / military

NUI(natural user interface)-based control

What is the future of MAVs?

Complete military implementation

Multiple interfaces for control

Manpower reduction by vast amounts

Better toys!

+ =

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

REFERENCES:

GOOGLE WWW.123SEMINARONLY.COM

Thank You

Any Questions