Problem Statement: FSAE Competition❖ International collegiate design competition in which student teams design,

manufacture and compete small Formula 1 style race cars.❖ Race cars to be manufactured with the best overall package of design,

construction, cost and performance.❖ 1000 possible points to be scored throughout Static and Dynamic Events

➢ Static Events: Design Presentation, Cost Presentation and Business presentation

➢ Dynamic Events: Acceleration, Skidpad, Autocross, Endurance, Efficiency

Our Competition: FSAE Electric 2021

Chassis: Design Validation

MIG welding to nodes on chassis

Weight load

RWR 2019-2020 Mission StatementThe 2019-2020 Rainbow Warrior Racing team will design and build, by May 2020, a simple and reliable prototype electric race car to serve as a foundational model for future RWR teams. The prototype shall strictly adhere to the Formula SAE Electric Rules with a performance focus on endurance capabilities.

Electric Powertrain Design Specifications❖ Motor: Emrax 228 134 hp (100kW) & 170 lbf∙ft (230 Nm)❖ Accumulator: 302V, 7.8 kWh, 72s12p ❖ Drivetrain: Drexler LSD, Rear Chain Drive ❖ Electronics: Rinehart PM100DX, Orion 2 BMS, Teensy 3.2

Microcontroller, Elcon Charger

University of Hawaii at Manoa

College of Engineering

Dept. of Mechanical Engineering

Advisor: Dr. Zachary Trimble

Torsional Rigidity

(Nm/deg)

Engine Bay Volume (ft^3)

Original (2019) 579.3 5.5

Modified (2020) 866.6 6

Percent Difference 49% 9%

Cooling System 2019 (IC) 2020 (EV)

Est. Powertrain Heat Generation 10 kW 8 kW

Heat Rejection (Theoretical/Tested) 10/12 kW 14/(?) kW

Manufacturing

Jig setup to weld A-arms

Suspension: Designing for Experiment

Electric powertrain packaged into space frame Accelerometer-arduino setup used in experiment

Top: Raw acceleration data collected from accelerometerBottom: Filtered data; used to compare to calculated lateral acceleration

Electric powertrain concept

Frame undergoing torsion test