RACE CAR
RT12e
POWER OF MOTORS
ACCELERATION 0-100 km/h
MASS OF RACE CAR
AERODYNAMICS
The aerodynamic package, made of carbon fiber, was completely designed and manufactured by PWR Racing Team in its own workshop. The main task of the aerodynamic components is to reduce the vehicle’s drag and provide downforce, which increases stability during acceleration and guarantees increased grip during cornering. The weight of the entire aerodynamic package is only 9.5kg, making it one of the lightest in the entire Formula Student. The cooling ducts for the battery and front braking are also important components, maximizing the cooling system’s performance in all conditions.
POWERTRAIN
After 11 years of building internal combustion engines, it was time to build an electric motor system. Two permanent magnet electric motors were designed and built, with a power output of 47kW each and a maximum speed of 15 000 RPM. In addition, a proprietary planetary gearbox with a fixed ratio of 9,8 was created. PWR Racing Team, also independently made a battery consisting of 484 cells in 121S4P configuration, with a capacity of 8,5kWh and a maximum voltage of 510V.
OUR ACHIVEMENTS
RT08
GENERAL CLASSIFICATION
- 1st place Formula SAE Italy 2017
- 3rd place Formula Student Czech Republic 2017
ACCELERATION
- 1st place Formula SAE Italy 2017
- 1st place Formula Student Czech Republic 2017
RT09
GENERAL CLASSIFICATION
- 3rd place Formula SAE Italy 2018
- 2nd place Formula Student Czech Republic 2018
ACCELERATION
- 1st place Formula SAE Italy 2018
- 1st place Formula Student Czech Republic 2018
RTX
GENERAL CLASSIFICATION
- 2nd place Formula Student Czech Republic 2019
ENDURANCE
- 2nd place Formula Student Czech Republic 2019
AUTOCROSS
- 2nd place Formula Student Czech Republic 2019
RT11
GENERAL CLASSIFICATION
- 3 place Formula Student Czech Republic 2021
SKIDPAD
- 1 place Formula Student Netherlands 2021
- 3 place Formula Student Germany 2021
- 3 place Formula Student Czech 2021
BUSINESS PLAN PRESENTATION
- 3 place Formula Student Netherlands 2021
ENDURANCE
- 2 place Formula Student Czech Republic 2021
ENGINEERING DESIGN
- 2 place Formula Student Czech Republic 2021
ACCELERATION
- 3 place Formula Student Czech Republic 2021
RT12e
BUSINESS PLAN PRESENTATION
- 6th place Formula Student Alpe Adria 2022
- 8th place Formula Student East 2022
ENGINEERING DESIGN
- 8th place Formula Student Germany 2022
SUSPENSION
In conjunction with the design of the first electric car with autonomous driving systems, we completely redesigned the suspension to best adapt it to the new design. The steering knuckles, along with the hubs, were adapted to accommodate planetary gears and the mounting of motors directly at the wheel. The steering system gained an additional mechanism, transferring torque from the engine, which turns the car during autonomous competition. When the driver takes control of the car, the steering motor is uncoupled using an electromagnetic clutch.
We have also adapted a pedalier mounting system with rails, so that we have a quick possibility to adjust the settings for a specific driver.
The bolide’s proprietary front calipers have different piston diameters to ensure equal wear of the brake pad linings.
ELECTRONICS
The RT12e is equipped with a modular low- and high-voltage wiring harness, which is made to the MILSTDD810H military standard and has 2 separate CAN buses. The total length of the wires is more than 350 meters, and the harness uses coaxial twisting to maintain the small bending radii of the wires, which are essential in motorsport. In addition, thanks to advanced 3D modeling, it has been optimized and wire diameters have been reduced, making it the lightest in its class. The RT12e is equipped with a proprietary 900MHz-based telemetry system. With the support of Speedgoat, the bolide has been equipped with a Baseline Real-Time Target Machine computer, which operates a network of more than 100 sensors on the car. Its main task is to control the operation of the inverters and connect all the communication buses in the RT12e allowing connectivity to the main computer of the autonomous system.
CHASSIS
The RT12e’s chassis this year has been completely redesigned into the first full monocoque. Weighing just 24 kg, the support structure is made entirely of carbon fiber with an aluminum honeycomb core. The interior of the cockpit has been designed and built with attention to driver comfort and ergonomics, and the carbon fiber seat has been tailored to the shape of the driver’s back, ensuring a stable position, even under heavy loads.
AUTONOMY
The autonomy division, was created specifically for the RT12e project and has developed autonomous driving systems from scratch. Based on 2 stereoscopic cameras and a 16-beam LiDAR sensor, the perception system allows detection of cones and determination of the driving path. Communication is based on a see-think-act pattern, and motion estimation is based on the SLAM algorithm.
VEHICLE PERFORMANCE
The interdisciplinary Vehicle Performance project was created for long-term development. The software controlling the vehicle’s dynamics was designed from scratch, so that the car has, for the first time, systems that enhance the car’s performance, such as Torque Vectoring and Traction Control. Simulations of selected dynamic competitions occurring during Formula Student competitions such as Skidpad and Acceleration were also carried out. The simulations are based on a mathematical model of the vehicle, so that already in the design phase it is possible to estimate how the car will behave in reality.
