Audible Warning Device:
World Solar Challenge 2017:
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- 6.3.E Horn: Solar cars must be equipped with a horn that can be heard at a sound power level between 75 and 102 dBA at a distance of 15 m in front of the solar car. The horn must be permanently mounted, operated from the steering wheel. Horn must be able to operate for up to 5 minutes continuously at the required volume.
Automatic Functions (Cruise Control):
World Solar Challenge 2017:
- 2.27.1 Any cruise control function must automatically deactivate when the brake is operated or the car is turned off.
- 2.27.2 Any automatic driving function must immediately deactivate on manual input or when the car is turned off.
Ballast
- Any solar car drivers weighing less than 80 kg will require ballast to bring his or her weight to 80 kg as per
Brakes:
World Solar Challenge 2017:
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- 2.21.1 The braking system must be approved by the team’s certifying engineer.
- 2.21.2 The solar car must be equipped with independent primary and secondary mechanical braking systems, so that if the primary system fails the secondary system can still stop the solar car.
- 2.21.3 Independent braking systems may share components deemed ‘not liable to failure’ provided that they are amply dimensioned and readily accessible for maintenance. Components ‘not liable to failure’ are:
- a brake pedal and its bearing
- hydraulic cylinders and their pistons
- hydraulic control valves
- brake cylinders and their pistons
- brake lever and cam assemblies.
- 2.21.4 Hydraulic brake hoses and lines are regarded as liable to failure.
- 2.21.5 For Challenger and Cruiser class vehicles, the primary braking system must apply mechanical braking effort to all road wheels.
- 2.21.6 Braking must not cause the solar car to yaw. This requirement applies to both the primary braking system and the secondary braking system.
- 2.21.7 For solar cars without anti-lock brakes, the front wheels must lock up before the rear wheels.
- 2.21.8 The primary braking system must be able to stop the fully laden solar car within distance 0.1 v + 0.0060 v^2 meters from any speed v, in km/h, that the solar car can achieve.
- 2.21.9 If the primary braking system fails, the secondary braking system must be able stop the fully laden solar car within distance 0.1 v + 0.0158 v^2 meters from any speed v, in km/h, that the solar car can achieve.
- 2.21.10 Solar cars must be equipped with a parking brake that can be operated by the driver from the normal driving position. The parking brake must be capable of holding the fully-laden solar car on a 20% incline or decline.
Display:
World Solar Challenge:
- 2.26.1 The following information must be provided to the driver at all times while driving:
- the speed of the solar car
- whether the direction indicators are operating
- whether the hazard lights are operating
- energy storage system warnings
- electronic rear vision images (if fitted).
- 2.26.2 This instrumentation must be powered from the energy storage system, and not from separate batteries.
Lighting:
World Solar Challenge 2017:
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- Lights shall be powered by a 12 volt power source
- Light shall be centered on a flat surface with a matte white finish of 280 mm (11”) x 216 mm (8.5”).
- Separate light boards shall be used for each color type as the standard reference.
- Reference standard light boards shall be set aside of car to compare during inspections.
- 6.3.C Viewing Angle: The geometric visibility of each individual light shall be as follows:
- 6.3.C.1 Front Turn Indicators - 30° from center in both directions and 15° up from horizontal.
- 6.3.C.2 Side Marker Turn Indicators - 60° from perpendicular to the center-line of the vehicle in both directions and 15° up from horizontal.
- 6.3.C.3 Rear Brake and Turn Indicators - 30° from center in both directions and 15° up from horizontal.
- 6.3.C.4 High Mounted Rear Brake - 30° from center in both directions and 15° up from horizontal.
- 6.3.C.5 BPS Fault indicator - 30° from center in both directions and 15° up from horizontal.
- 6.3.D Emergency Hazard: The front turn indicators, side marker turn indicators, and rear turn indicators shall be able to be activated simultaneously and flash in sync as an Emergency Hazard format.
Rain Clearing:
**Hydrophobic coating will most likely be used**
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- 6.4.D Rain Clearing: Solar cars must have a method to clear the windshield from any falling rain such that the vision requirements of Reg. 6.4.B can be met. The clearing method must be operable at all times and must be in use when it becomes necessary to use the windshield wipers on the team’s support vehicles. Hydrophobic coatings (such as Rain-X) are acceptable.
Rear Vision:
World Solar Challenge 2017:
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- 6.4.E Rear Vision: All solar cars must be equipped with a rear view system that at all times will allow the driver to see a vehicle 15 m directly behind the solar car and up to 30° off center. The system must provide the driver with a single reflex type image and must operate without driver input. The driver will be required to identify the direction of an arrow with a 200 mm thick brush stoke on a 1 m 2 board held about 1 m off the ground. 6.4.E.1 The camera and view screen shall be fixed in position such that road bumps and vehicle vibration will not alter the viewing angles.
- 6.4.E.2 The view screen shall be positioned such that the driver shall be able to see the view screen while seated in normal driving position.
Steering:
World Solar Challenge 2017:
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- 7.7.A Steering Wheel: All steering in the vehicle must be controlled by the driver with a steering wheel designed to have a continuous perimeter as outlined in Appendix A:
Appendix A:
- 7.7.B Steering Stops: The steering system must include steering stops to prevent dangerous or damaging steering travel. Steering stops cannot be held in place by friction. They must be welded, pinned or bolted in place, and placed in the steering system in way that will not create loads that will deform or scar the contacting pieces.
- 7.7.C Turning Radius: Solar cars must be able to make a U-turn in either direction, without backing up, such that any portion of the solar car that is within 200 mm of the ground remain within a 16 m wide lane. Portions of the solar car above 200 mm above ground may exceed the 16 m distance.
- 7.7.D Steering Backlash: The steering system must be designed with sufficient strength/stiffness and have minimal backlash so that the driver can always maintain good directional control of the vehicle.
Seats:
World Solar Challenge
- All constraints are met using our current seats
Visibility:
Formula Sun Grand Prix
- 6.4.A Eye Height: In the normal driving position with ballast on board, the driver’s eyes must be at least 700 mm above the ground.
- 6.4.B Forward Vision: From the normal driving position, the driver must be able to see at all times, without artificial assistance, points at the following locations:
- (1) A point on the ground 8 m in front of the solar car
- (2) A point 6.4 m above the ground and 12.2 m ahead of the leading edge of the car. (Will be inspected with a pole positioned 3 m ahead of the car)
- (3) A full 100° to either side of center
- (4) The driver will be required to identify 75 mm high letters at a distance of 3 m from the front of the solar car, through any of the required viewing angles.
- (5) The driver will be required to identify 50 mm high letters at a distance of 3 m from the side of the solar car, through any of the required viewing angles. Some elements of the roll cage may obstruct a portion of the forward vision. However, this view must be essentially unobstructed as much as is reasonably possible by the solar car structure.