Remote Control Helicopter Group 9 Group 9 Moiz Kapadia Adam Golembeski Eric Silk Paul DiFilipo

Motivation  A majority of the members are pursuing the aerospace option.  Interested to learn and understand the dynamics of a helicopter.  The RC Dragonfly posed as an appropriate challenge for 4 group members.

How the RC Dragonfly Works  Helicopters generate lift by creating a pressure differential across the blade  The motion of the swash plate regulates the forward, backward, left & right motion  Yaw is controlled by the speed of the tail rotor

How the RC Dragonfly Works con’t..  Flybars work in conjunction with the swash plate to guide the roll & pitch  Servo motors control the motion of the swash plate  This is a fixed pitch model, meaning the main rotors are rigid to the shaft.

Major Components  Battery Tray  Tail Rotor  Main Chassis and Landing Gear  Main Rotor  Swash Plate  Body

Battery Tray  Mirror, extrude, and cut.  Basic constraints such as axis align, datum plane offset and mate was used.

Tail Rotor  Revolve, extrude, mirror, shell methods were implemented in modeling.  Pin connections.  Gear connections made in mechanism mode

Chassis and Landing Gear  Mirror, extrude, cut, sweep protrusions.  Axis align, datum plane offset, and mate.  Intricate angles were measured to fully constrain the landing gear and support beams

Main Rotor  Contains complex series of constraints including pin, bearing and ball joint.  Simple methods of modeling such extrude, cut and mirror were implemented.

Swash Plate

Helicopter Body  Outlined digital pictures of body with Style Tool, Mirror, Shell, and Extrudes to model the main body.  Cut out of windshield, color, and reassemble.

Problems Encountered  Constraining servo motors  Replicating swash plate movement  Parts needing to be re-measured  Unit corrections

Full Animation

Final Assembly

Thank You  Thank you Ray for all your help & motivation this semester.