Vehicle Sizing PDR AAE 451 Balsa to the

Vehicle Sizing PDR AAE 451: Balsa to the Wall Ashley Brawner Matt Negilski Neelam Datta Mike Palumbo Xing Huang Chris Selby Jesse Jones Tara Trafton 1

Presentation Overview n Preliminary weight estimate n Wing loading and power loading n Summary of sizing 2

Preliminary Weight Estimate n Fuel fraction estimation method ¡ ¡ ¡ Analyze energy requirements for each mission phase to obtain phase battery weights Normalize sum of phase battery weights with unknown aircraft weight Find intersection of historical data with line created from estimation 3

Preliminary Weight Estimate 4

Preliminary Weight Estimate Assumed Paramet ers L/D_ m a x n n 14 Aircraft weight: 5. 42 lbs Battery weight: 0. 265 lbs L/D_l oi te 12. 12 r 4 50 [ f t/ 5

Wing and Power Loading 6

Wing and Power Loading n Design point: ¡ ¡ Wing loading: 1. 26 lbf/ft^2 Power loading: 3. 0 lbf/hp Assumed Parameters CL, max 1. 2 - 1. 8 L/D 12 - 14 Climb Angle 45 [deg] V_stall 30 [ft/sec] 7

Wing and Power Loading n Stall constraint: n Cruise constraint: 8

Wing and Power Loading n Climb constraint: 9

Summary n n n Weight estimate: 5. 42 lbs Wing area: 4. 3 ft^2 Motor horsepower: 1. 8 hp 10

Summary n n n Weight estimate: 5. 42 lbs Wing area: 4. 3 ft^2 Motor horsepower: 1. 8 hp 11

Questions? 12