Aurora-I

• Aurora-I design received the Society of Automotive Engineers(SAE) `Design Excellence in Engineering Safety' Award

General Data

Length: 19.49 ft (5.94 m)

Width: 6.4 ft (1.98 m)

Height: 4.9 ft (1.5 m)

Wheelbase: 7.9 ft (2.4 m)

Trackwidth: 5.9 ft (1.8 m)

Clearance: 0.49 ft (0.15 m)

Weight:

• 655 lbs (297 kg) w/o driver and batteries
• 831 lbs (377 kg) w/o driver
• 1007 lbs (457 kg) w driver

CdA: 3.02 ft2 (0.28 m2)

Cd: 0.18

Frontal Area(A):

16.96 ft2 (1.57 m2)

Wheels: 4

Number of Flats: 0

Tires:

• 48 spoke, 26 inch (66 cm) wheels with spoke covers.
• Avocet Fasgrip City 26 x 1.9 inch (66 x 4.8 cm) slick tires @ 85 psi

Crr: 0.0050

Removable Body Parts:

• 3 array panels
• 3 canopy covers
• Parts made from S-glass/Nomex

Controls and Instruments:

Display of :

• Buss voltage
• Solar Panel Current
• Battery Current
• Motor Current
• Speed and distance
• Battery Amp-Hour

Mechanical

Brakes:

• Polaris hydraulic disk brakes on 3 wheels
• Regenerative braking on fourth wheel
• 7075 aluminum disks with titanium coating

Front Suspension:

• Double trailing arms with coil over shocks

Rear Suspension:

• Single trailing arms with coil over shocks

Steering:

• Rack and pinion steering with adjustable Akerman angles

Chassis:

• Monocoque frame
• Carbon/Nomex undertunnel

Transmission:

• Parallel/Series motor switch gives 2/1 speed reduction
• Double reduction cog belt to motor, 3/8 inch pitch chain to rear wheel
• Fixed gears

Electrical

Motor:

• Solectria BRLSH DC Brushless
• 7.5 kW rated, 15kW max, 6000 RPM
• 96 volts
• 90% efficient
• 95% peak efficiency
• 47.8 lbs (21.7 kg)

Controller:

• Solectria BRLS100H
• 96% efficient
• 99% peak efficiency
• 12 lbs (5.5 kg)

Solar Cells/Array:

• Siemens Monocrystalline Silicon Solar Cells
• 1048 cells
• 15% single cell rated efficiency
• 13% overall panel efficiency
• 10 parallel strings on 5 planar or gently warped facets

Power Trackers:

• 3 Solectria MPT150HN, 5.3 lbs (2.4 kg)
• 2 Solectria MPT150, 1.75 lbs (0.80 kg)
• 95% efficient
• 98% peak efficiency

Sunrayce 93 Race Data

Batteries:

• GNB Pulsar, 8 batteries
• 3.8kWhr at C/20, 40 Ahr
• 176 lbs (80 kg)

Race Awards:

• SAE `Design Excellence in Engineering Safety' Award
• Teamwork Award for Day 3

Time: 85.29 hours

Average Speed: 13.01 m.p.h. (20.94 kph)

Day Finished Before 6:30 p.m.: 3

Total Distance Travelled: 726.4 miles (1169 km)

Overall Position: 21st

Qualifying Speed: 33.5 m.p.h (53.9 kph), 12th

Average Race Speed: 13.0 m.p.h. (20.9 kph)

Best Daily Average Speed: 23.5 m.p.h. (37.8 kph)

Maximum Instateous Power During Race: 1290 Watts

Solar Power on a Sunny Dat at High Noon: 870 Watts

Average Solar Power from 8-5 During a Sunny Day: 570 Watts

Speed on 630 Watts of Panel Power: 34 mph (55kph)

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