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Aussie Team Smashes Land Speed Record For Solar-Powered Cars
snowdon writes "A record which has stood since 1987, set by General Motors, has been broken (YouTube video) by a university team. The land speed record for a solar powered car was 78km/h, and now stands at 88km/h despite the cloudy conditions... If only Doc Brown had used the metric system!"
This seems rather low, and certainly not a record. Unless they compete in a "differently abled" class?
The Nuna 2 solar powered car that won the World Solar Challenge in 2003 had the following stats for the race:
Total race time: 31 hr 5 mins.
Average speed: 97,02 Km/h
Topspeed: 130 km/h
Top speed they had during Adante tour in 2004: 145 km/h
Link: http://www.esa.int/esaCP/SEMCCBZO4HD_Benefits_2.html
See also http://en.wikipedia.org/wiki/Nuna_5 for the stats of the Nuna 5.
Theoretical max speed: 175 km/h
Keep in mind that this was done by a (Dutch) university team as well.
Considering the fact that the sunswift team wants to compete in the WSC as well - I think they either need to get up to 188 km/h, or throw in the towel. Or perhaps I'm missing something but I did RTA and nothing suggests they really set a new speedrecord, except their own propaganda.
Therefore, by the (faulty) logic you're using, you're just a cow with a keyboard - osu-neko (2604)
I could be wrong, but usually the speed tests are done in both directions with the end speed being the average of the two values. This prevents people from taking advantage of things such as wind and/or angle to the sun.
Yes that is standard practice.
http://michaelsmith.id.au
There's quite a bit of truth to what they are telling you. As MichaelSmith alluded to, it's mostly because of the lack of airborne moisture, particulates and pollution cf. the comparatively wetter, more land-covered, more populated northern hemisphere.
In fact as an Australian that went overseas to the US and Europe for the first time as a 20 year old, it's one of the first things I noticed when I stepped off the plane. The sky is often a light, hazy blue, close to ~white~ near the horizon, even on a cloudless day. Put simply, it's the greater humidity in your atmosphere (with some contribution from both man-made pollution, and natural particulates such as pollen etc). OTOH as soon as you are >50km away from the coast in Australia, a sunny sky will be a deep, deep blue, with no discernable difference in colour between 'straight up' and 'at the horizon'. Not to say you can't get days like that elsewhere (desert regions would be like this world-wide), but this is the norm over most of Australia. Where I live (which is in the inland of Australia), I have never seen that 'white haze' that is common in the northern hemisphere sky.
Of course that viciously blue sky, although nice for solar power and photography, is a curse in many ways. Low average humidity makes us the driest inhabited continent, and we also have the highest UV irradiation on earth (and the highest rates of skin cancer as a consequence). The UV index used worldwide was obviously developed in the northern hemisphere since the highest category 'Extreme' starts at 11+ (and is supposed to represent the 'top few days' in a year). The scale is kinda useless in Australia since EVERY day is 'Extreme' (our normal summertime UV here is typically in the 13 to 15 range, and I've seen higher): http://en.wikipedia.org/wiki/Ultraviolet_index