OVERVIEW
For the second competition WARR Hyperloop developed a completely new design with the goal of achieving the highest possible speed in the tube. With a mass of only 85 kg and a maximum acceleration of 0.9g, the new pod reached 324 km/h and won the competition.


THE SUBSYSTEMS

PROPULSION
ELECTRIC MOTOR
- A 50 kW motor provides 40 Nm of torque, accelerating the pod from 0 to 350 km/h in twelve seconds
- A belt drive transmits the required power and protects agains overload
- The drive wheels polyurethan coating provides a high friction coefficient and helps absorb shocks
- Pneumatic muscles clamp the drive wheel to the rail using a force of 1400 N
- Due to the clamping an increased amount of torque can be transferred to the wheel, allowing for a higher acceleration

STRUCTURE
CARBON FIBER REINFORCED PLASTIC
- Made of CFRP supplemented with aluminum inserts at points with high loads
- Sandwich-structured main frame with a foam core for increased bending and torsional stiffness
- Structure reinforced at critical points (e.g. brakes, propulsion connection) by varying ply thickness
- Unidirectional fiber layout in the propulsion structure to support the belt pretension (2000 N) and prevent buckling
- Combined weight: less than 20 kg



BRAKING SYSTEM
AND PNEUMATICS
- Four pneumatically-activated friction brakes achieve a deceleration of up to 2.4 g, bringing the pod to a standstill within five seconds
- In the event of power loss the brakes automatically deploy
- Tested up to 400 km/h
- System mass: 4 kg

POWER SUPPLY
LITHIUM POLYMER BATTERIES
- A 132-cell lithium-polymer battery system provides all the on-board power
- The battery packs are sealed in a CFRP box with a controlled internal pressure of 1.1 bar (16 PSI)
- The 50 kW motor is powered by a high-voltage circuit with 500 V voltage and 180 A peak current (120 cells)
- The electronics uses a low-voltage circuit with 24 V and 3 A (12 cells)



STABILIZATION SYSTEM
HORIZONTAL & VERTICAL
- Stabilization modules prevent the pod from deviating in horizontal and vertical direction
- High precision bearings ensure safe performance at high rotational speeds
- Aluminum wheels are optimized to withstand high loads and irregularities of the rail
- A combination of tension springs and dampers is used to counter vibration and achieve the precise alignment needed at high travel speeds

ELECTRONICS
TELEMETRY & CONTROL
- 38 Sensors constantly assess the state of the pod, measuring everything from battery voltage to braking pressure
- Three independent microcontrollers on custom printed circuit boards share the work of pod control
- A common CAN Bus connecting the three microcontrollers provides a robust and industry-proven communication protocol

