UMSolar (Aurum) - Day 3

Submitted by Bronco648 on

Holding onto 3rd despite setback

While Michigan finished the end of Day 3 still in third place, the afternoon brought some challenges for the team. Not long after we in the media van had been discussing how impressive it was that the car hadn’t spent any time pulled over, word came over the radio that Aurum was stopped....
A few minutes after the dispatch, around 2:30 p.m., we caught up to the car in the shoulder, a blur of yellow hazard vests around it. Took the team just a few minutes to fix a mechanical issue with a tire well enough to continue. But it slowed Aurum down. The two Dutch leaders pulled ahead, still within sight of one another. Tokai was still behind Michigan, thanks, in part, to two ten-minute penalties.

Game-changing penalties

Race officials are being generous with penalties this year. Penalties involve teams being held back at control stops for varying lengths of time, depending on the infraction, while other teams pull out ahead. Official race observers ride in every team’s chase vehicle (which rides right behind each solar car.) If one of these observers sees a violation, they report it to headquarters in Adelaide. And there, officials decide how many minutes to sentence the team to.
Punch Powertrain received a full hour for a reckless driving maneuver that team members insist didn’t occur.
Tokai has received two 10-minute set-backs. The first for reckless driving of the team’s media vehicle and the second for an incident with Michigan.

Heading into familiar territory

Today, Aurum crosses the half-way point in the World Solar Challenge and the border into South Australia, a state crew chief Arnold Kadiu called “home turf” at the team meeting last night. It’s a windy, buggy place where the students spent eight grueling days in the Outback testing. (They weren’t able to do a traditional end-to-end mock race this year because of new race regulations.)
“We know this area better than any other team,” Kadiu said.

More from UMSolar: HERE.

The Top 5:

1
#21 Red One - Solar Team Twente (Netherlands)
Location: Kulgera
Overall time: 21:45:43
Avg. Speed: 91kph
Total distance: 1766km

2
#3 Nuna8 - Nuon Solar Team (Netherlands)
Location: Kulgera
Overall time: 21:45:53
Avg. Speed 91kph
Total distance: 1766km

3
#2 Aurum - University of Michigan Solar Car Team (United States)
Location: Kulgera
Overall time: 21:56:16
Avg. Speed: 92kph
Total distance: 1766km

4
#8 Punch One - Punch Powertrain Solar Team (Belgium)
Location: Kulgera
Overall time: 22:06:15
Avg. speed: 94kph
Total distance: 1766km

5
#10 Tokai Challenger - Tokai University (Japan)
Location: Kulgera
Overall time: 22:11:38
Avg. speed: 90kph
Total distance: 1766km

WSC Complete Timing Board: HERE.

Go Aurum! Go Blue!

M-Dog: Please explain the external chargers as previously found on Nuon's car. Thanks!

Zoltanrules

October 20th, 2015 at 10:44 AM ^

My son is interested in UM Engineering and toured the "pits" where they were working on the solar car and other projects. It inspired him to go into his HS robotics team and he is learning more there than from all his other classes combined.

These competitions inprire our best minds to accomplish great things today and tomorrow. I have no doubt the next cure for cancer and other unsolved problems today, will by solved by these awesome minds.

M-Dog

October 21st, 2015 at 9:09 AM ^

M-Dog: Please explain the external chargers as previously found on Nuon's car.

I'm going from memory here, but during the last WSC cycle, Nuon used a charging technology that had more efficient cells in external units that were wired to the car.  You can see one of them at 1:22 in this video, the external radiator-looking unit at the bottom left of the screen:

I don't know how / why they are legal, but you can see Michigan is using them this cycle.

Again, I am going from memory from 2 years ago and I may be mis-representing what these are and how they work, but they were cited as giving Nuon a big edge the last WSC cycle.

I'll see if i can dig up more specifics when I get a chance.

 

M-Dog

October 21st, 2015 at 9:18 AM ^

More info from Nuon's site:

 
"Because of the restrictions on the dimensions of the solar car, the seventh Nuon Solar Team could not fill the topshell of the solar car with the maximum allowed area solar cells of 6 square meters. The area of approximately half a solar cell was left unused. To use this last bit of area, the team used concentrator systems from Semprius. This is a lens-system with concentrates a large area of sunlight on a very small area of Gallium Arsenide solar cells. These concentrators are unfolded when the solar car is standing still, during the control stops and during the morning and evening. The concentrators proved to be an innovation the competition had not anticipated for."
 
This answers one of the questions I had as to why Aurum was not as completely filled with cells as previous versions of the Michigan solar car.  They are using some of that cell area for the external chargers.