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Dr. RangeTM Electric Race Car

Hybrid & Electric Vehicle Range Values

Range Estimation Battery Only Time

Version 5.0 Battery Only Range 1991 - 2000 All Rights Reserved HPU Burn Time

Inputs are typed in boxes Outputs

Driving Conditions * Driving Conditions

Cruising Speed 55 MPH Cruising Speed

Characteristic Road Grade 5.0 Percent Grade Characteristic Road Angle

Terminal Road Angle

Vehicle Characteristics

Frontal Area 12.50 Square Feet Vehicle Forces

Coefficient of Drag 0.25 Aerodynamic Drag Force

Coef. of Rolling Resistance 0.65 Percent Ar Hill Climbing Force

Motor Efficiency@Cruise 80.00 Percent Co Rolling Resistance ForceTransmission Efficiency@Cruise 85.00 Percent Co Total Force

Regenerative Recovery 0.00 Percent Eff_Motor

Eff Vehicle Power Loss

Batteries Eff Aerodynamic Drag Power

Weight Per Unit Battery 55.00 Pounds Hill Climbing Power

Voltage Per Unit Battery 12.20 Volts Rolling Resistance Power

Amp-Hour Rating of Unit Battery 80.00 Amp-Hours W Total Power Loss

Number of Unit Batteries 6 Voltage_UnitBattery

A Vehicle Power Gain

Solar Power Unit Nu Power of Solar Power Unit

Surface Area of Solar Cells 0 Square Meters Power of Hybrid Power Unit

Efficiency of Solar Cells 14.5 PercentMean Solar Flux For Run 850 Watts/m^2 Ar Batteries

Eff Specific Energy of Battery

Hybrid Power Unit (HPU) Flu Specific Energy of Battery

Power of HPU 500 Watts

Capacity of HPU Fuel Tank 1.0 Gallons HPU

Specific Energy of HPU

Weights Vol Specific Power of HPU

Weight of HPU 150 Pounds

Weight of People 320 Pounds Weights

Weight of Payload 50 Pounds W Weight of Battery Pack

Remaining Weight of Vehicle 250 Pounds W Weight of HPU Fuel

W Total Weight

Weight_Remainder

Physical Constants

Dry Air Density@25 C & 1 atm 0.002299219 Slugs/Cubic Foot Conversion Factors

Gasoline Density (as N-Octane) 5.84 Lbs/Gallon Multiply

Energy Density of Gasoline 1.82 Hp-Hours/Gallon Sy Degrees

Gee 32.17 Feet/Sec^2 De Radians

De Degrees

En Gradians

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Ge Miles

Feet

Hour

Miles Per Hour

Watt

Horsepower

Watt HoursWatts

Watt Hours/Kg

Foot Pounds/Sec.

Horsepower

Pounds

Kilograms

g/ml

g/cc

Pounds

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27-Feb-14 J. Doe

0.46 Hours Time_BatteryOnly

25.10 Miles Range_BatteryOn Battery Weight Trade Study2.7 Hours Time_HPU_Burn

are these. Hill

Battery Battery Total Climb Rolling

* Count Weight Weight Power Power

81 Feet/Second V_Cruise () (lbs) (lbs) (Hp) (Hp)

4.5 Degrees Angle_Road 0 0 776 8.9 0.7

1.6 Degrees 1 55 831 9.6 0.8

2 110 886 10.2 0.8

3 165 941 10.8 0.9

23 Lbs Force_Drag 4 220 996 11.5 0.9

87 Lbs Force_HillClimb 5 275 1051 12.1 1.0

7 Lbs Force_Rolling 6 330 1106 12.7 1.1117 Lbs Force_Total 7 385 1161 13.4 1.1

8 440 1216 14.0 1.2

3.4 Hp Power_Drag

12.7 Hp Power_HillClimb

1.1 Hp Power_Rolling

17.2 Hp Power_Loss

0.0 Horsepower Power_SolarPanel

0.7 Horsepower Power_HPU

39.1 Watt-Hours/Kg

85.7 Hp-Sec/Lb SpecificEnergy_Battery

42.8 Hp-Sec/Lb SpecificEnergy_HPU

0.00 Hp/Lb SpecificPower_HPU

330 Lbs Weight_BatteryPack

6 Lbs Weight_Fuel

1106 Lbs Weight_Total

By Value To Obtain Symbol

0.01745329Radians DegToRad

57.30Degrees RadToDeg

1.11Gradians DegToGrad

0.90Degrees GRadToDeg

0

5

10

15

20

25

0 100 200

Battery OnlyRange

Battery

Range Vs. Weight

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5280.00Feet MileToFeet

0.00Miles FeetToMile

3600.00Sec HourToSec

1.47Feet/Second MPHToFPS

0.00Horsepower WattToHp

745.70Watt HpToWatt

2655.00Foot Lb WattHrToFtLb0.74Foot Lb/Sec. WattsToFtLbPerSec

1204.66Feet WattHrPerKgToFt

0.00Horsepower FtLbPerSecToHp

550.00Foot Lb/Sec. HpToFtLbPerSec

0.45Kilograms LbToKg

2.21Lb KgToLb

62.43Lb/Foot3 GPerMLToLbPerFt3

8.35Lb/Gallon GPerCCToLbPerGal

0.03Slugs LbToSlug

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Solar/HPU

Loss Aux Battery Extended

Power Power Range Range

(Hp) (Hp) (miles) (miles)

13.1 0.7 0 0

13.8 0.7 4 4

14.5 0.7 7 7

15.2 0.7 10 10

15.8 0.7 12 13

16.5 0.7 15 15

17.2 0.7 17 1817.9 0.7 19 20

18.6 0.7 21 22

300 400 500

Weight

(Battery Only)