IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Lecture 2

Build MAVs

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Building / Construction

� Realize the designed shape

� Maintain it in flight

� Weight

� Strength

� Choice of Material

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Materials

� Paper / Cardboard

¾ Simple but small

� Wood (Balsa)

¾ Light weight

¾ Easy working

� Other Materials

¾ Thermocole, FRP, etc

¾ Complex shapes

¾ Re-inforcements

Tools

&

Techniques

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Paper / Cardboard

� Easily available - negligible cost

� No special tools required

� Small size

� Unpowered models only

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Balsa

� Soft and light

� Ease of working

� Available in strips

¾ 3 inch width

¾ 1/32 to >1 inch thickness

¾ 3 to 4 ft length

� Needs fuel proofing

� Needs Reinforcement

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Thermocole

� High Density Thermocole (HDT)

� Very light

� Less expensive and easily available

� Complex shapes can be made

� Difficult to make articulated surfaces

� Reactive to fuel

� Needs Reinforcement

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Building MAVs

� Paperplanes

� Almost Ready to Fly (ARF)

� Pre-Cut

� Full Construction

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Paperplanes

� Paper / Cardboard

� Plans (Fold / Cut)

� Glue for assembly (if required)

� Dummy weight for c.g location

� Hand / Catapult launched

� Fixed control surface deployment

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Paperplane Plan

GPA

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Almost Ready to Fly

� No fabrication

� Only Assembly (Joining & Fixing)

� Limited variety (especially in India)

� Good choice for beginners

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

ARF Kit

� Fuselage with vertical tail and engine mount

� Wing

� Horizontal tail

� Fuel tank with cap and copper tubes

� Main undercarriage struts and wheels

� Nose wheel steering system and wheel

� Essential screws

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Additional Equipment

� Engine

� Propeller & Spinner

� Fuel tubing

� R/C Equipment

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Pre-Cut

� Components are cut-to-shape & size

� No fabrication

� Extensive Joining & Fixing

� After fixing, model similar to ARF

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Full Contruction

� All components to be fabricated

� After fabrication, model similar to pre-cut

� Extensive usage of tools & techniques

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Tools required

� Marking & Measuring Tools

� Cutting & Shaping Tools

� Finishing Tools

� Jigs & Fixtures

� Adhesives

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Working with Balsa

� Aircraft plan, drawing board & pins

� Steel ruler, pencil

� Cutter / Knife

� Sandpaper

� Super Glue /Araldite

� Paint - fuel proofing

� Plywood - reinforcement

� Skin - Monokote

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Working with HDT

� Cutting bow & Heated wire

� Cutting Templates

� Files, Sandpaper

� Vineer - surface finish

� Adhesives

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Provisions for other fixtures

� Engine

� Fuel tank compartment

� Fuel tubing

� Undercarriages (Nose & Main)

� R/C Equipment

¾ Receiver

¾ Battery Pack

¾ Servos

¾ Linkages (Push rods / Snake Cables)

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Engine & Tubing

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

R/C Receiver

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Skin (Monokote)

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Skin (Monokote)

IIT Bombay

MIT 2002

MiniatureAerial

Vehicle

DesignBuild

& Fly

Lecture 2: Build MAVs

Lecture 2

Build MAVs