Andrew Fleming Gregory Palm Rebekah Puterbaugh Team Advisor: Dr. Scott Thomas

1. Wright State UniversityRegular Class AircraftSAE Aero Design East Competition“Raiders”Team Number 020 Andrew Fleming Gregory Palm Rebekah Puterbaugh Team Advisor: Dr. Scott Thomas Team Pilot: Eddie Noble April 16, 2004

2. Project Goals • Design with high-lift criteria in mind • Meet all design competition requirements • Built so pilot can easily control the plane • Minimize weight wherever possible • Have working plane with multiple test flights prior to the competition

3. Airfoil Selection • High-lift airfoil required • Three designs singled out • Selig 1223 • Selig 1210 • NACA 6412 • XFOIL used to determine airfoil performance • Angle of attack = 0 degrees • Re = 310000 • Mach = .0221 • Flap deflection = 0 degrees • Selected Airfoil • Selig 1223

4. Engine Test Stand • Designed by Wright State Aero Design Team 2003 • Initially for engine “break-in” • Primarily for static thrust measurements using various propellers

5. Calculations Lift Rolling Drag Net Thrust/Acceleration • Simultaneous equations with time as driving variable • Chord length and density referenced for instant updates • From initial time to liftoff • From goal weight and required takeoff distance, determined chord length Wing Drag Effective Weight Instantaneous Velocity Fuselage Drag Total Drag Total Distance

6. Construction Methods • Fuselage • Foam laminated with balsa on one side • Nose • Balsa build-up • Wings • Balsa build-up • Tail • Foam laminated with balsa sheeting on both sides

7. Taxi Test: March 27, 2004 • Plane taxied in the parking lot of Russ Engineering Center • Lift-off with a small payload • Design Improvements • Lightening process • Lightening holes located in tail and rear fuselage • Lighter rear landing gear • Net weight loss: .91 lbs. • New nose gear • Cross members located closer to wing

8. Takeoff Test 1: April 7, 2004 • Several parameters adjusted • Propeller • Payload • Flap Deflection • Top Result • 13 x 6 APC Propeller • 40% Flap deflection • Approximately 180 feet for takeoff • Design Improvements • Taller gear set • Adjustment of payload base • Small rear drag wheel • Fixed elevator servo

9. Takeoff Test 2: April 10, 2004 • Failures • Nose gear • Rear landing gear • Design Improvements • Improved soldering on nose gear extension • Reinforced rear landing gear mount

10. Budget • Estimated total plane costs: $1,354.12 • Major Cost Breakdown

11. Project Timeline

12. Lessons Learned • R/C Aircraft Building Skills • Phases of the project take longer than anticipated • Optimizing aircraft for top performance • Basic R/C model building skills • Engine testing and fine tuning • Team Building Skills • Project phase planning • Optimizing work time for each team member • Solving design conflicts

13. Flight Test Video

14. Questions?

15. Questions?

16. Design Page #1

17. Design Page #2

18. Design Page #3

19. Design Page #4

20. Design Page #5