| Nuna solar racer |
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The Nuna 6 is the latest solar-powered racing car in the Nuna series built by the Dutch Nuon Solar Team.[1][2] Nuna 6 has been built by students who are part of the Nuon Solar Team at the Delft University of Technology in the Netherlands. Nuna 6 weighs 145 kg, and is therefore lighter than the previous 5 cars.[3]
In October 2011, Nuna 6 finished second in the 11th World Solar Challenge in Australia.[4]
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The 2011 regulations are comparable to those from 2009 (the year Nuna 5 raced). The major change was is that the solar panel of 6 m2 has to be made from silicon solar cells or has to be limited to 3 m2 for other high grade solar cells like the previously used triple junction GaAs solar cells which are mostly used in space.[5]
Nuna 6 will use 6 m2 of monocrystalline silicon cells which will be about 22% efficient (high grade cells might be up to 35% efficient).
| Technical stats on Nuna 6 [6] | |
|---|---|
| Measurements | Length: 4.44 m Width: 1.75 m Height: 0.94 m |
| Weight (excluding driver) | 145 kg |
| Driver weight | Minimum 80 kg (using added weights) |
| Number of wheels | 3 |
| Number of solarcells | 1690 cells (Monocrystalline silicon solar cells) |
| Solarcells surface | 6 m² (maximum for silicon cells) |
| Efficiency solarcells | 22 % |
| Maximum speed | unknown |
| Engine | InWheel Direct Drive Electric Engine (Efficiency: 98 %) |
| Battery | 21 kg Lithium-ion battery |
| Body | Carbon fiber (textreme) with Twaron (aramidfibre) for parts that need extra driver protection / Titanium rollbar |
| Front wheel suspension | Double wishbone of carbon fibre / Metal springs which incorporate shocks / Carbon fiber shock absorber/ Aluminium rims / Ceramic bearings |
| Rear wheel suspension | Horizontal fork of carbon fiber / Aluminium connection points |
| Front brakes | Custom ceramic brakedisc / Aramid breaklines |
| Rear brakes | Regenerative brake |
| Tyres | (profiled tyres) |
| Rolling resistance | 10 times less than an average car |
| Air resistance | 12 times less than an average car |
| Telemetry | WiFi to support car |