280 likes | 449 Views
Group 3 Heavy Lift Cargo Plane. William Gerboth, Jonathan Landis, Scott Munro, Harold Pahlck November 12, 2009. Presentation Outline. Project Objectives Final Conceptual Design Q&A From Phase I Technical Analysis Approach Technical Analysis Plan For Phase III Nugget Chart.
E N D
Group 3Heavy Lift Cargo Plane William Gerboth, Jonathan Landis, Scott Munro, Harold Pahlck November 12, 2009
Presentation Outline • Project Objectives • Final Conceptual Design • Q&A From Phase I • Technical Analysis Approach • Technical Analysis • Plan For Phase III • Nugget Chart
Project Objectives • Design and build an airplane to successfully compete in the SAE Aero East competition • Plane must successfully take off from a runway of 200 feet and land on a runway 400 feet • Constraints of 55 pounds total weight, and the combined height, length, and width of 200 inches • Plane must make one complete 360° circuit of the field per attempt
Conceptual Designs • From our concept matrices we chose the designs that scored the highest, the final design concepts are as follows • Airfoil Shape: Eppler 423 • Wing Shape: Straight • Landing Gear: Tricycle • Tail shape: T-Tail
Q&A from phase I • Competition Scoring: • The total score is the flight score + Design Report+ Oral presentation • FS=RAW+PPB+EWB-TP • RAW=Raw weight score=Wx4 (W=weight lifted in LBs) • PPB= Prediction point bonus= 20-(PP-PA)2 (Pp=predicted payload, PA =actual payload • EWB=empty payload bonus (10 point for a successful empty flight) • TP= total penalties (From design report, technical inspection, Aircraft modifications) • Design report is out of 50 points
Q&A from phase I (cont.) • Plan For victory in completion • Control of the Plane • A 2.4GHz radio controller will be used (competition rules) • Flaps, Ailerons, Rudder, Elevators, and Throttle will be moved by servos controlled by radio
Technical Analysis Approach • Perform Calculations for: • Drag • Lift • Velocity • Take off distance (>200 ft.) • Landing distance (>400ft.)
Technical Analysis: Friction Drag • Assumptions • Altitude 3000 ft. • ρ = 0.002175 slugs/ft3 • µ = 0.36677x10-6 slugs/ft – sec • Friction drag depends on velocity so it must be calculated for takeoff, landing, and cruising
Technical Analysis: Flaps and Aileron Span C .25C Aileron Flap Flap Aileron 35-40% 60-65% 100% • Length • Ailerons = 35-40% of span .38*57.5 = 35.65 • Flaps = 60 -65% of span .62*57.5 = 21.85 • Width • 25% of chord • Aileron width 3 in. • Flap width 3 in.
Technical Analysis: VelocityFlaps fully down at 40 deg. Stall Velocity =24.18 mph =35.47 ft/s Takeoff Velocity =29.02 mph =42.56 ft/s Landing Approach Velocity =31.44 mph =46.11 ft/s Cruise Velocity =35.07 mph =51.43 ft/s
Technical Analysis: Landing CL =2.5659 Takeoff Velocity =915.13 =2195.41 3110.547 =2.160
Technical Analysis: Lift CalculationAt .7Vto T = Static Thrust Available = 11.865 Fc = Coefficient of Rolling Friction = 0.035 =17.105 =6.684 =135.52 ft With a 25% safety factor = 169.397
Technical Analysis: Landing CalculationAt .7Vl W = 35 lb. = 560 oz. Fc = Coefficient of Rolling Friction = 0.035 =24.47 =376.67
Plan for Phase III • Complete Final Design • Create CAD models of Aircraft • Use CAD models to analyze final Aircraft design
Title: Heavy Cargo Lift Plane Team Members: William Gerboth, Scott Munro, Jonathan Landis, Harold Pahlck Advisor: Professor Siva Thangam Project #: 3 Date: 11/12/09 ME 423 Phase II Nugget Chart– Design Selection and Technical Analysis