BATTERY PERFORMANCE METER FOR ELECTRIC PROPULSION SYSTEMS Team Members: Ryan Bickham, Dennis Blosser Cody Dinkins, Todd Dutton, Rachel Shively January 15, 2008 Project Sponsor: Patrick Taylor, Ph.D., AMRDEC

Received Parts Airframe –Parkzone F-27C Stryker –Wing Span: 37 in –Overall Length: 27 in –Flying Speed : 80 mph or more

Received Parts Motor –Parkzone Brushless Motor –Part # PKZ4216 –High power, direct drive, 6-pole 1880 Kv –2.5 mm diameter shaft

Received Parts Electronic Speed Controller –E-flite 25 Amp Pro Brushless ESC –Powered by a 3S Li-Po battery –Max burst current: 30 Amp (15 sec) –Battery Input Leads: 16 AWG, E-flite EC3 –Motor Output Leads: 16 AWG, 3.5mm female gold bullet connectors

Received Parts Battery –Parkzone 2200 mA-h 3S LiPo battery –Part # PKZ1030 –Voltage: 11.1 V –E-Flite EC3 connection –Weight: 5.6 oz

Received Parts Servo Tester –Astro Servo Tester PN 105 –Servo signal adjusts between low and high throttle (1ms and 2 ms) –Places a test load of 500 mA on BEC circuit

System Diagram – Device Under Test Battery Under Test Speed Controller Motor Servo Tester 4-cell NiCd receiver battery

Device Under Test

RECENT DEVELOPMENTS Mechanical: Received airframe and parts for motor setup Requested fabrication of parts for cooling system Electrical: All three auditing FPGA course Decided to use same type of FPGA for project as in class Programming in VHDL

NEXT STEPS Electrical: Ordering: Procurement list for Dr. Taylor needed by Friday Specific FPGA Interconnects A/D Converter Shunt resistors and basic circuitry Small LCD Monitor & VGA Cables? User input panel? Brands? Learning language & use

NEXT STEPS Mechanical: Procurement list for Dr. Taylor needed by Friday 4-cell NiCd receiver battery Chargers for both NiCd and LiPo batteries Socket headed cap screws Computational method for drag and lift curves for airframe Use calculated aeronautical data to find power characteristics for testing