Creative Journey

MEE30003 Machine Design

Harrison Bennett Joseph Thekkekkara Joshua LazaroJordan BoyleCreative Journey: Windshield Wiper System

1

Introduction

EVX's ultimate vision is to make self powering cars the future of transportation.Windscreen Wiper System has not yet been created that is aerodynamic enough to contribute to an overall coefficient of drag < 0.21.

2

Explain what coefficient of drag is and its importance to a solar vehicle.Drag coefficient is RESISTANCE of an object in fluidic environment.2

Project Overview and ObjectivesCreate a windshield wiper system:Mounted onto the EVX Immortus vehicle and ready for use.Meets Australian Design RequirementsAerodynamically efficient (contribute to a cd < 0.21)Taking into consideration the actuator (weight, complexity, power consumption)

3

3

Approach

Research:

The history of the windscreen wiper. Why is a windscreen wiper needed?. Aerodynamics basics.Different kinds of Windscreen wiper, how people have approached clearing a windscreen.

4

Approach: Provide a brief description of the approach in your project, including necessary details on the relevant methods, theory, experimental processes and setups, and/or validation techniques.4

Why are Windscreen Wipers Needed?

5

5

Concepts

Thinking Outside the BoxUltrasonic TransducersHigh Pressure AirHydrophobic Coating

7

7

Aerodynamics Background

8

8

Hiding the Blades

9

Mechanical Cover To encapsulate it- Redirect Air when up?No Cover May have issues regarding air-pockets9

Beam VS Conventional (Superstructure)

10

10

Blade Designs/ Ideas

11

11

12

Windscreen

13

13

Wiping Mechanism

14

14

Design MethodDetermine dimensions of Blade.Use calculations to calculate torque required to move blade.Define constraints of linkage size space .Select motor Linkage specs define motor requirements

15

15

Refreneces:https://en.wikipedia.org/wiki/Drag_coefficienthttp://georgemdavison.com/inventor-you-should-know-mary-anderson/http://historyofscience2013.blogspot.com.au/2013/04/mary-anderson-1866-1953-windshield.html

http://www.tricoproducts.com/Drivers/UnderstandingWipers/Wipers101http://www.amosunglasses.com/latest/blog/item/173-do-hydrophobic-coatings-for-sport-sunglasses-really-workhttps://www.google.com.au/patents/US4928580

16