Twente One
Twente One
chassis of Twente One
Driving wheel of Twente One
The Twente One is the second solar car developed by the University of Twente and Saxion University (at Enschede, Deventer and Apeldoorn) in 2007, and succeeds the SolUTra. It was designed to participate in the 2007 World Solar Challenge.
Its main innovations were a pivoting solar screen that follows the angle of the sun, and a system of fresnel lenses that focus the sunlight onto a solar panel with a system to adjust the panel so that the maximum amount of light from the lenses shines on the individual solar cells.
The Twente One came in on the fifth place in the 2007 World solar Challenge.
Specifications Twente One
| Length | 5000mm |
| Width | 1800mm |
| Height | 1400mm |
| Weight (excluding Driver) | <230 kg |
| Number of wheels | 3 |
| Characteristics | Pivoting solar panel & lens system with Fresnel lenses and movable solar cells |
| Top-speed | 120 km/h |
| Solar cells | 2073 Gallium-Arsenide Triple Junction, area 6m² |
| Efficiency of solar cells | >27% |
| Motor | In-Wheel Direct Drive Electric Motor NGM/CSIRO 95%-99% |
| Battery | 30 kg Lithium Polymer |
| Control | Steering wheel from aluminium tube with a width like a CD-box, and with quick-release |
| Bodywork | Carbon fibre sandwich construction |
| Chassis | Box-construction from aluminium plate-work, connected through high quality aluminium milled parts, roller-bars from chrome-molybdenum-steel |
| Fore-wheel suspension | Double A-arm construction from chrome-molybdenum-steel, horizontal racing shock absorbers, lightweight aluminium rims, ceramic bearings |
| Hind-wheel suspension | Trailing-arm construction of chrome-molybdenum-steel |
| Tires | Bridgestone/Maxxis radial 14 inch (slicks) |
| Brakes | Brake-discs with aerospace braking-hoses in the front, regenerative braking in the back |
| Rolling friction | one tenth that of a normal car |
| Air friction | one fifth that of a normal car |
| Telemetry | Wireless connection with following car, car transmits about 200 measuring signals |
| Crew | One team-member |
See also
External links
 |
Wikimedia Commons has media related to Twente One. |
- website of the Twente One team {in Dutch}