Download - 4.0 Preliminary Design - American Institute of … Preliminary Design Mission 3 Model Payload: 4.41 lbs Size wing span for Mission 3 Takeoff Climb to 100 meters Varying Aircraft Parameters:

4.0 Preliminary Design

Mission 3 Model Payload: 4.41 lbs

Size wing span for Mission 3 Takeoff

Climb to 100 meters

Varying Aircraft Parameters:

Number of Cells Propeller

Energy Available > Energy Required?

No Yes


Fly three laps of the course

Varying Aircraft Parameters: Number of Cells

Propeller


No Yes

Keep lightest propulsion

system


Fly the course for 4 minutes

Variable Aircraft Parameters:

Number of Cells Propeller


No Yes

Keep propulsion

system with best N_laps

Max propulsion weight for Mission

1 not to exceed that for Mission 2

or 3

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Save Aircraft

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Input Aircraft Parameters: Motor

Battery Type Wing Airfoil Wing Chord

Fuselage Dimensions Tail Volume

Field Conditions

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S  Optimization Analysis S  Wing Chord S  Wing Airfoil S  Tail Volume S  Motor Type S  Battery Type S  Cell Count and Propeller Choice


S  Mission Model


S  Aerodynamic Tradeoffs

Max t/c (%) Loc. Max t/c (%) 11.1 32.7

14.0 27.2

13.3 31.4

E214

SD7062

BA9


S  Propulsion Tradeoffs


S  Final Optimized Aircraft


S  Lift, Drag, and Stability Characteristics


S  Predicted Mission Performance

5.0 Detailed Design

S  Dimensional Parameters

5.0 Detailed Design

S  Structural Characteristics

5.0 Detailed Design

S  System Design and Component Selection/Integration

Payload Accommodation

Water Tank Release System

Wing-Box Placement

5.0 Detailed Design


Hollow Foam and Carbon Fiber wing

5.0 Detailed Design


Motor mount Landing gear

MSC flow simulation

Tail boom weight

5.0 Detailed Design

S  Weight and Balance

M1 M2 M3

5.0 Detailed Design

S  Flight Performance Parameters