1. Miguel Jimenez Ricardo Lugo Carlos Rojas Advisor: Andres Tremante

2.  Problem Statement  Competition Background  Metrics  Design Alternatives  Wing Design  Proposed Design  Stability and Servos  Timeline

3.  Designing a remote-controlled aircraft for a competition in São Paulo, Brazil in late 2010. ◦ Aircraft should lift the most possible weight with predefined constraints.  Competition is hosted by SAE Brazil, where universities from all around the globe meet for this event.

4.  Flight Path: ◦ Airplane must take off within 61 meters ◦ Land within 122 meters. * Image courtesy of SAE Brazil

5.  SAE Brazil sets the maximum dimensions for the aircraft according to the following formula: D: total dimension L: distance from front to back measured linearly H: maximum height (without propellers) Bi: span of lift-generating components n: number of lift-generating components

6.  Maximum weight: 20 kg, including gasoline

7.  Engine: O.S.61 FX ◦ Specifications:  Displacement: 0.607 (cu in)  1.9 horsepower at 16,000 RPM  RPM: 2,000-17,000  Weight: 19.4 oz.  0.866” stroke ◦ MSRP: $170.00

8.  For an R/C aircraft, the most critical component is the wings. In this sense, the fuselage is not as critical as in full-size airplanes, therefore its design is less rigorous.

9. PlacementShapeDihedral Angle High WingStraight Mid WingSweepbackTip Low WingDeltaPolyhedral

10.  Wing Type: Straight  Wing Position: High Wings (above fuselage)  Other Wing Considerations: Straight Dihedral ◦ To be determined with CFD analysis

11.  Four servos will control the airplane’s attitude: Thrust, Yaw, Pitch, and Roll Empennage Yaw Rudders Pitch Elevators Wing Roll Ailerons

13. Miguel Jimenez Aerodynamic Design Computational Fluid Dynamics Propulsion Calculation Prototype Construction Ricardo Lugo Aerodynamic Design Control and Stability Prototype Construction Carlos Rojas Radio Control survey Servos and Channels Competition parameters Prototype Construction

14.  Structural Design and CFD analysis is planned for May-June 2010, months before the competition  Wing Design needs dihedral angle CFD testing before modeling  Funding is a key for prototype construction