1. First-Year Engineering Program Advanced Energy Vehicle System Analysis 2 Reference:  AEV Lab Manual  System Analysis 2 Grading Guidelines

2. First-Year Engineering Program AEV Project Objective (Problem Definition) INITIAL CONCEPTS (Brainstorming) EXPERIMENTAL RESEARCH ANALYZE DESIGN DECISION RESEARCH COMPARE FINAL DESIGN Present AEV Design PT 1 PT 2 PT 3 PT 4 (System Analysis)(Programming)

3. First-Year Engineering Program Lab Objectives  The objectives of this lab are: 1.Demonstrate capability to download data from the automatic control system. 2.Demonstrate capability to convert EEPromArduino data readouts to physical parameters. 3.Demonstrate capability to calculate the supplied power, incremental and total energy to the AEV. 4.Be able to calculate performance characteristics of the AEV

4. First-Year Engineering Program AEV Controller AEV User Manual – System Analysis 2  Follow Grading Guidelines to program the Arduino conroller  Save Program  Run Program on Desktop stand  WAIT for Arduino to process the data

5. First-Year Engineering Program AEV Data Recorder AEV User Manual – System Analysis 2  Open AEV Data Recorder with the Arduino Software  Upload AEV Data Recorder  Open Serial Monitor and copy data

6. First-Year Engineering Program AEV Energy Analysis AEV User Manual – System Analysis 2  Open AEV Energy Analysis Excel Spreadsheet  Paste data in the second sheet  Overwrite the sample data  Separate data  Save Excel Spreadsheet

7. First-Year Engineering Program AEV Data Conversion AEV User Manual – System Analysis 2  Convert into the physical parameters of  Time (seconds)  Current (amps)  Voltage (volts)  Analyze the data by calculating:  Power (watts)  Incremental Energy (joules)  Total Energy (joules)

8. First-Year Engineering Program AEV Performance Characteristics AEV User Manual – System Analysis 2  With the wheel count sensor calculate, throughout the data, the following:  Distance  VelocityEx.  Kinetic Energy

9. First-Year Engineering Program AEV Performance Characteristics AEV User Manual – System Analysis 2  The efficiency of the system is composed of both the propeller and the electric motor  The efficiency is defined as the ratio of the power available (output) and the power supplied (input)

10. First-Year Engineering Program AEV Performance Characteristics AEV User Manual – System Analysis 2  The efficiency of the propulsion system is a function of the AEV velocity and the propeller RPM  These are two independent variables that are different for each AEV and each control program  We can use non-dimensional analysis to create a parameter to be able to combine the independent variables

11. First-Year Engineering Program AEV Performance Characteristics AEV User Manual – System Analysis 2  Using Buckingham PI Theorem, we are able to reduce the number of dependent variables for efficiency from two to one!  Where “J” is known as the Propeller Advance Ratio is given by:  With “D” being the propeller diameter

12. First-Year Engineering Program AEV Performance Characteristics AEV User Manual – System Analysis 2  The propeller RPM is a function of the current being supplied to the motor by the command inputs  The following are supplied characteristics of the two various size propellers:

13. First-Year Engineering Program AEV Performance Characteristics AEV User Manual – System Analysis 2  For System Analysis 2, you are provided with sample propeller advance ratio characteristics  In System Analysis 3, you will generate your own propeller performance characteristics and update System Analysis 2 data!

14. First-Year Engineering Program AEV Performance Characteristics AEV User Manual – System Analysis 2  The propeller testing and sample characteristics are generated for a range of propeller advance ratios and expressed as:  This needs to be applied to your data for both System Analysis 2 and later with System Analysis 3

15. First-Year Engineering Program System Analysis 2 Lab Lab Activity  Follow AEV Lab Manual and Lab Procedure Guidelines  Team:  Create control program and test  Open AEV Data Recorder and obtain Arduino data  Individual:  Copy and paste into AEV Energy Analysis spreadsheet  Analyze results