Hi. I am currently doing a homework assignment that has me completely stumpe
It involves being presented with a limited set of specs and data for an electric motorcycle that needs a battery pack. I did fine with the battery calculations but am really struggling with the rest. The calculations i need to figure out how to do are.
- Acceleration
- Range of vehicle
Data given is
Mass = 163kg
Wheel radius = 0.305kg
Max speed = 90kph
(v)Average speed = 30kph
Average power required to maintain speed = (Mass*v^2*(f)) in Watts
(f) Energy usage fraction = 12%/s
Expected usage and recharges = 5 recharges a week for 50 weeks a year
Motor input power rating = 17.5kW
Nominal Voltage= 48V
Nominal Torque = 68.4Nm
Motor Efficiency = 90%
Any help or pointers as to how i would solve this to get the acceleration and range would be great!!!! Thanks in advance