1. Critical Design Review AAE490 Project 1 March 2003 Nicholas Baker Brian Chernish Andrew Faust Doug Holden Mara Prentkowski Nicholas Setar

2. AAE 490 2 Overview Design Requirements Last Semester’s Design Walk around Landing Gear Fuselage Wing Horizontal Tail Vertical Tail Avionics Pod Engine Radio Instillation Color Scheme

3. AAE 490 3 Design Requirements & Objectives Maximum weight < 55 lbs Cruise speed > 50 ft/sec Stall speed < 30 ft/sec Climb angle > 5.5° Operating ceiling > 1000 ft Flight time > 30 minutes Payload of 20 lbs in 14”x6”x20” pod Carry pitot-static boom Spending limit < $300 T.O. distance < 106 ft (~60% of McAllister Park runway length) Rough field capabilities Detachable wing Easy construction

4. AAE 490 4 Aircraft Walk Around Low wing – Clark Y Tricycle Gear T-Tail – NACA 0012 Pusher Wing Span = 14.4 ft Wing Chord = 2.9 ft A/C Length = 10 ft Internal Pod

5. AAE 490 5 Walk Around

6. AAE 490 6 Landing Gear Nose Gear –Mounting Hardware Main Gear –Mounting Hardware

7. AAE 490 7 Nose Gear Fults Tooling Dual Strut (RF800) Mount: 1/4” plywood bulkhead Weight: 9 oz Cost: $33.94 Servo Actuated for steering

8. AAE 490 8 Main Gear Carden Edge 540 40% CE54040 Mount: 1/4” Plywood Weight: 23 oz Cost: $89.95

9. AAE 490 9 Fuselage Size Materials/Construction Articles that Mount to Fuselage

10. AAE 490 10 Fuselage Outer Fuselage –1/8” Plywood Formers –1/4” x 1/4” Balsa Stringers –3/32” Balsa Sheeting 4-6 lbs/ft 3 Contest grade Keel –1/8” Plywood Formers –1/2” x 1/2” Basswood Stringers –1/4” x 1/4” Balsa Truss –3/32” Balsa Sheeting 4-6 lbs/ft 3 Contest grade

11. AAE 490 11 Fuselage Things that attach to the keel –Nose Gear –Main Gear –Wing –Horizontal/Vertical Tail –Engine Nacelle –Nose Cone

12. AAE 490 12 Fuselage Nose Cone Attachment/Removal

13. AAE 490 13 Wing Size Materials/Construction Wing Mounting

14. AAE 490 14 Wing Size –The wing was sized to the following constraint Where; W = 53 lbs Vmin = 30 ft/sec CL = 1.19 r =.002309 slug/ft 3 S = 41.7 ft 2

15. AAE 490 15 Wing Materials –1/8” Balsa Ribs –1/8” Plywood Root Rib –1/2” x 1/2” Spruce Spare (2) with 1/8 balsa shear web –Leading and Trailing edge stock –Aluminum Main Spar 2024 T3 –3/32” Balsa Sheeting 4-6 lbs/ft 3 contest grade

16. AAE 490 16 Wing Mounting Wing is Plug in style –Main Spar stays in plane –Wings Panels removable for ease of transportation and maintenance –2 Anti-rotation bolts keep wing attached

17. AAE 490 17 Wing Aluminum Wing Spar 2024 T3 Aluminum Tube –1.75” Diameter –.049” thickness –46” Length –5 degree dihedral angle To get proper location of wing

18. AAE 490 18 Horizontal Tail Size Materials/Construction Horizontal Tail Mounting

19. AAE 490 19 Horizontal Tail Size Assume cg is locate at the quarter chord Assume η h = 0.9 AR wing = 5 S wing = 41.7 ft 2 AR h-tail = 3 Find: S h and AR => b h and c h

20. AAE 490 20 Horizontal Tail x c/4 = 0 ft ≈ x cg Static Margin = 15% SM = (x ac – x cg )/c Solve for x ac x ac = 0.435 ft

21. AAE 490 21 Horizontal Tail Roskam Eq. 3.18 Raymer Fig 16.12 Roskam Figure 3.3

22. AAE 490 22 Horizontal Tail Results S h = 8.5 ft 2 b h = 5.051 ft c h = 1.683 ft

23. AAE 490 23 Horizontal Tail Materials 1/8” Balsa Ribs 1/8” Plywood Root Rib 3/4” x 3/8” Bass Spar (2) Machined Ribs, Trailing Edge, and Leading Edge 1/16” Sheeting on Leading Edge and Center Section

24. AAE 490 24 Rocker

25. AAE 490 25 Vertical Tail Size Materials/Construction Vertical Tail Mounting

26. AAE 490 26 Vertical Tail l V = 5.47 ft S wing = 41.8 ft 2 b wing = 14.4 ft V V = 0.031

27. AAE 490 27 Vertical Tail TR = 1.5 Sweep Angle = 22.25 o

28. AAE 490 28 Vertical Tail Construction 1/2” x 1/2” Bass Center Spar 1/2” x 1/4” Bass Front Spar 1/4” Balsa Vertical Webs 1/8” Balsa Ribs Balsa Leading Edge and Trailing Edge

29. AAE 490 29 Avionics Pod Air Data Boom Attachment Pod Attachment Camera

30. AAE 490 30 Avionics Pod Air Data Boom Placement –On the Fuselage for Protection –In Front of the Plane for Accurate Data Collection –Near the Pod for Easy Integration –Camera Placement

31. AAE 490 31 Avionics Pod Pod Construction –Pod Dimensions 14” X 11” X 20” –1/8” Plywood Base –Balsa Sides Similar to Fuselage Construction

32. AAE 490 32 Avionics Pod Pod Attachment –Variable placement for CG adjustment –Vibration isolated for clearer pictures and electronics protection –Easily mounted with six bolts at the top of the Pod

33. AAE 490 33 Avionics Pod Camera Placement – Mounted just above the Keel –30° look down angle when level allowing for an in flight banking look down angle of 45°

34. AAE 490 34 Engine Engine Mount Engine Mount Pylon Additional Hardware Propeller Selection

35. AAE 490 35 Engine DA-50-R –5 Hp –3.13 lbs –Length 6.7” –Bore 1.6771” –Stroke 1.3779” –Clockwise Rotation

36. AAE 490 36 Engine Engine Mount –¼” Plywood Firewall 3” X 4” –Standoff Mounts Shown in Blue

37. AAE 490 37 Engine Engine Mount Pylon –1/2” square Bass Wood stringers –Balsa Ribs –4” X 3” plywood mounting plate –14” tall providing 12.5” of prop clearance

38. AAE 490 38 Engine 50 oz Dubro Fuel Tank Fuel Delivery –Fuel tank located at CG –Fuel line run through pylon to the engine –Vacuum created by engine stroke draws fuel Good for up to 30 feet

39. AAE 490 39 Engine Additional Required Hardware –Throttle Servo –Ignition Battery –Ignition Switch

40. AAE 490 40 Engine Propeller Choices –Manufacturers Bolly Menz Mejzlik –Sizes 24” X 8” 22” X 10” 23” X 10”

41. AAE 490 41 Aircraft Maintainability Service Hatches –Top Hatch –Servo Access Hatches Exposed Engine for Ease of Maintenance

42. AAE 490 42 Radio Instillation

43. AAE 490 43 Color Scheme

44. AAE 490 44 APPENDIX Parts Drawings Single Receiver Instillation Material List

45. AAE 490 45 Single Receiver

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