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Published byAndrew Greer Modified over 7 years ago
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Vehicle Sizing AAE 451: Team 2 Michael Caldwell Jeff Haddin
Asif Hossain James Kobyra John McKinnis Kathleen Mondino Andrew Rodenbeck Jason Tang Joe Taylor Tyler Wilhelm
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Revised Design
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Modified Mission Objectives
15 minute endurance Take-off distance less than 60 ft Vstall less than 15 ft/s VLoiter less than 25 ft/s Turn radius of 35 ft Tabletop defined as 6 ft x 6 ft
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Constraint Diagram Modified MATLAB code from Prof. Andrisani AAE 451
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Mean Chord Investigation
Assumptions 6 ft span, 2.2 lbs aircraft weight Speeds between 15 and 25 ft/s Trends Airfoil CLmax = 1.5 Airfoil CL loiter = 1.0
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Mean Chord Investigation
12 inch mean chord selected
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Motor & Propeller Feigao 1208436L Brushless Motor 0.038 lbs
0.472 in. Diameter x 1.22 in. Long $40 Connected by 0.03 lb :1 Gearbox Slow Flyer Electric Propeller (EP-1147) 0.022 lbs 11 in. diameter $1.88 All available at
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Batteries Two Worley Lithium Polymer batteries 0.10 lbs total
340mAh each 7.4 V each 1.86 x 1.19 x 0.21 in. $22.99 each
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Mission Energy Budget
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Tail Sizing From Raymer’s Aircraft Design: A Conceptual Approach
Horizontal tail (canard) coefficient = 0.3 Vertical tail coefficient = 0.06 Assume tail control surfaces half the total surface area
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Interior Layout CG AC
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Stability Analysis Estimation of CG and AC
Distance measured from front of aircraft CG = ft AC = ft Static margin = 16.2%
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Aircraft Dimensions Wing Main Fuselage Support Fuselages
Wingspan = 72 inches Mean chord = 12 inches Main Fuselage Length = 20 inches Radius = 2 inches Support Fuselages Length = 36 inches Radius = 1 inch
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Aerodynamic Surfaces Wing area = 864 in2
Aileron area = in2 Total canard area = in2 Elevator area = in2 Vertical tail area = in2 Rudder area = in2
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Aircraft Weights Estimated to be 85% foam, 15% balsa
Weight of structure = 1.80 lbs Weight of batteries = 0.10 lbs Weight of electronic gear = 0.25 lbs Weight of motor & prop = 0.06 lbs Weight of gear box = 0.03 lbs Total weight = 2.24 lbs
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Weight Breakdown
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Immediate Plans Comparison to historical data
Mission specific drag model Airfoil selection Trade studies
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Questions?
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