GROUP 8: PHOTOVOLTAICS: ENGG1000 TEAM 8 Tom Darley Xiaofan Deng Irene Dongol Constance Gong Samantha Shen Samuel Zhao

GROUP 8: PHOTOVOLTAICS: ENGG1000 Problem Statement Design a system of space travel that is: Safe – for occupants and spectators Environmentally friendly - runs on solar energy - constructed with materials of no commercial value Self-functioning Able to ascend and descend a 7m tether Within the size limit of 600mm x 600mm x 600mm

GROUP 8: PHOTOVOLTAICS: ENGG1000 Our Design

GROUP 8: PHOTOVOLTAICS: ENGG1000 Mechanics What does it do The mechanical aspect of the project encompasses the drive system which is the backbone of the movement. Within this system the gears manage the energy output from the motor and control the torque as well as speed of the system.

GROUP 8: PHOTOVOLTAICS: ENGG1000 Rationale for choice Gearing Ratio to favour Torque or Speed? we decided on torque rather than speed for several reasons ; increased torque higher speed could risk slippage Our drive system is designed in an angled orientation reduce the overall size of the vehicle contributed to a centre of mass closer to the centre of the elevator Choice of wheels or tank treads as the central contact point addition of free spinning guide wheels as another means of increasing balance and stability.

GROUP 8: PHOTOVOLTAICS: ENGG1000 How did you make it ? - Combination of existing resources with other materials. - Lego as a major resource / material > modifications made to existing Lego parts as a means of Integrating the two components of the system

GROUP 8: PHOTOVOLTAICS: ENGG1000 Solar collection & Electronics What does it do in relation to the project How did you make it Rationale for choice, Data and Demonstration – Connection method of two solar panels – Electric circuit

GROUP 8: PHOTOVOLTAICS: ENGG1000 Solar Collection & Electronics How Did we make it? Product Circuit Board Solder

GROUP 8: PHOTOVOLTAICS: ENGG1000 Rationale for choice, Data and Demonstration Connection method of two solar panels – Connect two panels in parallel Electric circuit – Type of switches – LED

GROUP 8: PHOTOVOLTAICS: ENGG1000 Reasons for connect panels in parallel Both two connection methods the max powers are similar From the data sheet of motor, its working voltage is between 1.5 – 4.5V and the working current is between 0.15 to 1.4 A Reasons for connect panels in parallel Both two connection methods the max powers are similar From the data sheet of motor, its working voltage is between 1.5 – 4.5V and the working current is between 0.15 to 1.4 A I-V data of two connection methods In parallel Voc (V)3.45 Isc (A)1.44 Vmp (V)2.27 Imp (A)1.25 Pmax (W)2.85 In series Voc (V)6.36 Isc (A)0.74 Vmp (V)4.92 Imp (A)0.59 Pmax (W)2.9

GROUP 8: PHOTOVOLTAICS: ENGG1000 Electric Circuit Diagram Motor + - Solar panels S 2 S 1 RL Red LEDs S 1: A single-pole double-throw switch button which is used to control the whole circuit. S 2: A double-pole double-throw switch button on the top of elevator, used to change the direction of current. Red LEDs: indicator lights. One of them will be bright when the device is off

GROUP 8: PHOTOVOLTAICS: ENGG1000

GROUP 8: PHOTOVOLTAICS: ENGG1000

GROUP 8: PHOTOVOLTAICS: ENGG1000 Chassis The relationship with regards to our project. Rationale of choice.

GROUP 8: PHOTOVOLTAICS: ENGG1000 Computer-Aided Design

GROUP 8: PHOTOVOLTAICS: ENGG1000

GROUP 8: PHOTOVOLTAICS: ENGG1000

GROUP 8: PHOTOVOLTAICS: ENGG1000 Conclusion Evaluation – Strengths: – Solid chassis – Simplistic design – Possible improvements: – Stronger materials and construction techniques – Wheel mechanics – Gearing – Types of wheels