SAE AERO DESIGN PROJECT PROPULSION & TELEMETRY SYSTEMS UNION COLLEGE FLIGHT CLUB. Ervin Meneses and Joseph Laub Advisor John Spinelli,Ph.

Transcription

1 SAE AERO DESIGN PROJECT PROPULSION & TELEMETRY SYSTEMS UNION COLLEGE FLIGHT CLUB Ervin Meneses and Joseph Laub Advisor John Spinelli,Ph.D

2 SAE Aero Design Team Society of Automotive Engineers Team of five, two EE s and three ME s Regular and Advanced Class Competitions

3 Regular Class Competition Summary Design, build, and test an R/C aircraft Carry max pay loads within 200 ft runway Max combined L,W,H of 175 inches Electric Propulsion Power limiter (1000W) Scoring Bonus Points Penalties Include Power consumption >1000W Bad take off/landing Design modifications after submitting design Report

4 OPTIMIZING POWER CONSUMPTION OF SAE AERO AIRCRAFT Ervin Meneses

5 Design Requirements Project Goals Propulsion Systems Testing Future Work Overview

6 Design Requirements One single electric motor configuration Use of one COMMERCIAL Li-Po Battery Min. Req. of 25C Use of 2015 Power Limiter Install Red Arming Plug

7 Project Goals Provide the team with an aggressive electric propulsion system (EPS) that complies with SAE Aero Rules and provides more that 11 lbf of thrust Design and implement a P.I controller algorithm that optimize the power consumption of EPS(

8 2014 EPS

9 Battery, Propeller, and Motor Selection The

10 Battery Selection 1lb.6oz 6s 4000mAh 1lb 2oz 6S 3200mAh

11 3200mAh vs 4000 mah Bateries Add a plot that they perform the same under the 4 minute interval

12 Transmitted Signal

13 2015 EPS PWM Analo g Consta nt Power

14 What is a P.I Controller?

15 P.I control Algorithm Block Diagram

16 P.I Control Results But

17 Data Collection Tools Use of Thrust Test Bed Oscilloscope Current Probe BNC to alligator Clip connector Xplorer GLX Graphing Data Logger Dual Load Cell Amplifier Propell er 17x12E x x8E x10E x x x8E x10E Average Thrust (lbf)

18 Test Bed

19 17x12E Prop

20 18x8 Prop

21 18x8E Prop

22 Engaging Limiter

23 Add Crash Picture

24 Future Work Finish P.I Control Algorithm Order and test other propellers with different pitches Use Ecalc as a reference for future testing Find lighter motor for future use

25 Questions?

26 TELEMETRY SYSTEMS FOR THE SAE ADVANCED COMPETITION AIRCRAFT By Joseph Laub Advisor: John Spinelli, Ph.D

27 Project Goals This year Improving aircraft prototypes Next year Competing in the Advanced Class

28 Advanced Class Competition The Mission: Drop a three pound humanitarian aid package onto a target from at least 100 feet.

29 Telemetry System SAE Requirements Real-time altitude at ground station. Record altitude at time of drop. Accurate within one foot. Telemetry must have a first person view (FPV).

30 Telemetry System Primary Goals Record: Altitude Air Speed Ground Speed Location Time Transmit altitude to ground station. Calculate lead time to target at ground station.

31 Telemetry System Secondary Goals Overlay altitude and ground speed data on FPV monitor. Accelerometer data. Gyroscopic data. Take off/landing time recorded.

32 Aircraft 2015 Union College Aero Team Prototype 1

33 The Brain The fuselage of the aircraft with telemetry package

34 Data Acquisition System *Power not shown

35 Data Acquisition System Inter-intergrated circuit (I2C) protocol.

36 Data Acquisition System System block diagram.

37 Microcontroller Arduino Mini Pro (3.3 V) ~9x smaller. ~7x lighter

38 Sensors Altimeter Pressure Temperature Change in Altitude (from pressure) GPS UTC Time Location (latitude and longitude) Ground Speed Airspeed Sensor Air Speed Range Finder Distance from bottom of fuselage to ground.

39 Data Processed using MATLAB. Air Speed (miles/hour) Fuselage Range Finder (mm) Altitude (feet) Temperature (F) Air Speed Plot from file fakeflight.txt Time (seconds) Fuselage Range Finder Plot from file fakeflight.txt Time (seconds) Altitude Plot from file fakeflight.txt Time (seconds) Temperature Plot from file fakeflight.txt Time (seconds)

40 Future Work Connect GPS using I2C. Continue testing range of RF communication. Include accelerometer.

41 Professor John Spinelli Professor James Hedrick Professor Luke Dosiek Professor Bradford Bruno Gene Davison Stan Gorski Lisa Galeo Rodolfo Santana The 2014 Union College Aero Team Acknowledgments

42 Questions?