1. 1 ME 442 Senior Project Week 6 Dr. Joseph Vignola Pangborn G43, Phone 202-319-6132, vignola@cua.eduvignola@cua.edu Tuesdays & Thursdays, 9:35-12:25 AM, Pangborn G43 Office Hours: Tuesdays, 1:00-2:00 PM

2. 2 Documentation Each member of the group should be sure that you bring ALL electronic files everyday SolidWorks drawings

3. 3 Documentation Each member of the group should be sure that you bring all electronic files everyday SolidWorks drawings Excel budget and receipts Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

4. 4 Documentation Each member of the group should be sure that you bring all electronic files everyday SolidWorks drawings Excel budget, must be this version or have this information Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

5. 5 Documentation Each member of the group should be sure that you bring all electronic files everyday SolidWorks drawings Excel budget, must be this version or have this information Item(s) Date of purchase Supplier Date received Total cost (items + shipping and anything else) Who’s credit was used Name of the receipt pdf file One line per transaction Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

6. 6 Documentation Please bring all your electronic files everyday SolidWorks drawings Excel budget Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html It’s best to use the document that I started

7. 7 Documentation Please bring all your electronic files everyday SolidWorks drawings Excel budget Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html It’s best to use the document that I started It’s on the class web page

8. 8 Budget Document From here forward you must use my version of the document The reason is that many of you: Made addition mistakes Didn’t include important information like the date of the purchase and the name of the company you made the purchase from. Remember: One line per transaction not one item One PDF receipt per transaction for that one line Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

9. 9 Purchases I need to see the Excel budgets today and everyday I want to be sure we are keeping careful track of all expenses.

10. 10 Materials and Purchasing It is very import that we straighten the budget today Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

11. 11 Materials and Purchasing It is very import that we straighten the budget today Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

12. 12 Materials and Purchasing It is very import that we straighten the budget today

13. 13 Materials and Purchasing It is very import that we straighten the budget today

14. 14 Materials I can cut materials for you to any dimension, exactly to the dimensions you give me.

15. 15 Expediency Be sure you are making design decisions based on engineering principles. Please don’t Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

16. 16 Materials Ask Ken to bring specific material you need Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html Ken

17. 17 Materials and Purchasing It is very import that we straighten the budget today There are problems with the credit card MNEY

18. 18 Materials and Purchasing It is very import that we straighten the budget today There are problems with the credit card The card problems include the lost receipts from this class MNEY

19. 19 Materials and Purchasing e-mail Hong right away to schedule time She is nicer that I am and will help you

20. 20 Flight Testing Jim and Ed want to test Tuesday, Feb 25 Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html That’s 7 days off

21. 21 Flight Testing I’m hoping that Ken will schedule and do the technical inspection and taxi tests with you Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html …and you have to do the taxi test and technical inspection before the flight test SMTWThFS 678 9101112131415 161718 Today19202122 232425 Flight Test 262728 SAE Deadline May 1 I’m still working on this but the big issues is

22. 22 Machine Shop Please work with Don, Hong or anyone that has built things Show them sketches of ideas and be open to new ideas This will make it easier for you Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

23. 23 Machine Shop Please work with Don, Hong or anyone that has built things Show them sketches of ideas and be open to new ideas Simplify your design Settle on the details Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

24. 24 Assignment 2 Fix assignment 1 A number of groups did not submit assignment 2 or didn’t really update anything Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

25. 25 Assignment 2 Fix assignment 1 Toolbox Please just list what you need to carry to the airfield. Glue that take overnight to dry is probably not appropriate for that list but cyanoacrylate glue (Superglue) is You should know what each screw is for Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

26. 26 Assignment 2 Fix assignment 1 Toolbox Please just list what you need to carry to the airfield. Glue that take overnight to dry is probably not appropriate for that list but cyanoacrylate glue (Superglue) is You should know what each screw is for Please don’t list random items Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

27. 27 Assignment 2 Fix assignment 1 Toolbox Please just list what you need to carry to the airfield. Glue that take overnight to dry is probably not appropriate for that list but cyanoacrylate glue (Superglue) is You should know what each screw is for Please don’t list random items ¼” screws Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

28. 28 Assignment 2 Fix assignment 1 Toolbox Please just list what you need to carry to the airfield. Glue that take overnight to dry is probably not appropriate for that list but cyanoacrylate glue (Superglue) is You should know what each screw is for Please don’t list random items ¼” screws, a hammer Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

29. 29 Assignment 2 Fix assignment 1 Toolbox Please just list what you need to carry to the airfield. Glue that take overnight to dry is probably not appropriate for that list but cyanoacrylate glue (Superglue) is You should know what each screw is for Please don’t list random items ¼” screws, a hammer, weed wacker Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

30. 30 Assignment 2 Fix assignment 1 Toolbox Please just list what you need to carry to the airfield. Ask Jason, Hong, Ken or me what you really need Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

31. 31 Money Lets start with the group that has the most people here Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

32. 32 Money Thanks for the help resolving the credit card issues Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

33. 33 Flight Testing Jim and Ed want to test Monday, Feb 24 Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

34. 34 Flight Testing Jim and Ed want to test Monday, Feb 24 Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html SMTWThFS 6 Today78 9101112131415 16171819202122 2324 Flight Test 2526272829 I’m still working on this but the big issues is

35. 35 Flight Testing Jim and Ed want to test Monday, Feb 24 Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html …and you have to do the taxi test and technical inspection before the flight test I’m still working on this but the big issues is SMTWThFS 6 Today78 9101112131415 161718 tech insp taxi test 19202122 232425 Flight Test 2627281

36. 36 So Given the Calendar Work with Ken, Hong, Don, and Me Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

37. 37 Flight Test I would like you to make all the arrangements regarding getting up to the airfield Tuesday. Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

38. 38 Money Thanks for the help resolving the credit card issues Today we can start with group ? Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

39. 39 Myths and Truths Myths Gorilla Glue is no stronger than ordinary carpenters glue Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

40. 40 Myths and Truths Myths Gorilla Glue is no stronger than ordinary carpenters glue You can make a part bigger then the travel range of the CNC machine Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

41. 41 Myths and Truths Myths Gorilla Glue is no stronger than ordinary carpenters glue You can make a part bigger then the travel range of the CNC machine Ken brought enough wood for everyone Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html Ken

42. 42 Myths and Truths Myths Gorilla Glue is no stronger than ordinary carpenters glue You can make a part bigger then the travel range of the CNC machine Ken brought enough wood for everyone Purchase always come through as hoped Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

43. 43 Myths and Truths Truths Round holes are easier to make then not round holes Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

44. 44 Myths and Truths Truths Round holes are easier to make then not round holes Hong needs some sleep Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

45. 45 You need to know where the CG is Weighted averages. x y

46. 46 Mass and Aerodynamic Centers Weighted averages. x y

47. 47 Mass and Aerodynamic Centers Weighted averages. Pick an origin x y

48. 48 Mass and Aerodynamic Centers Weighted averages. Pick an origin, make a table x y componentMass (kg)x-location (cm) engine0.45-3 fuselage2.175 Wing2.327 Front landing gear0.3512 Rear landing gear0.6434 Fuel tank0.338 Radio reciever0.257 tail0.75150 Payload Total7.17319

49. 49 Mass and Aerodynamic Centers Weighted averages. Pick an origin, make a table x y componentMass (kg)x-location (cm) engine0.45-3 fuselage2.175 Wing2.327 Front landing gear0.3512 Rear landing gear0.6434 Fuel tank0.338 Radio reciever0.257 tail0.75150 Payload Total7.17319 51.2 cm

50. 50 Mass and Aerodynamic Centers Each component that is exposed to the exterior flow Has a net drag force that acts on that component The magnitude of that force is 51.2 cm These drag forces occur at specific locations These location must be determined Once you have them x z

51. 51 Mass and Aerodynamic Centers Each component that is exposed to the exterior flow Has a net drag force that acts on that component The magnitude of that force is x z 51.2 cm These drag forces occur at specific locations These location must be determined Once you have them

52. 52 Mass and Aerodynamic Centers x z 51.2 cm Once you have them… DRAW A FREE BODY DIAGRAM

53. 53 Mass and Aerodynamic Centers Once you have them Then sum forces and moments mg thrust Wing drag tail drag fuselage drag

54. 54 Mass and Aerodynamic Centers Once you have them Then sum forces and moments mg thrust Wing drag tail drag fuselage drag x z

55. 55 Mass and Aerodynamic Centers Once you have them Then sum forces and moments mg thrust Wing drag tail drag fuselage drag x z

56. 56 Mass and Aerodynamic Centers Once you have them Then sum forces and moments mg thrust Wing drag tail drag fuselage drag x z

57. 57 Mass and Aerodynamic Centers Once you have them Then sum forces and moments mg thrust Wing drag tail drag fuselage drag x z

58. 58 Mass and Aerodynamic Centers This summing for moments is precisely the same as the weighted average x z 51.2 cm componentNet drag (N)z-location (cm) x-location (cm fuselage2.7544 Wing15.31745 Front landing gear 3.5-1234 Rear landing gear 5.8-1176 tail13.721125 Total40.7

59. 59 You MUST include this information This summing for moments is precisely the same as the weighted average x z 51.2 cm componentNet drag (N)z-location (cm) x-location (cm fuselage2.7544 Wing15.31745 Front landing gear 3.5-1234 Rear landing gear 5.8-1176 tail13.721125 Total40.7 So have a figure with YOUR plane, a coordinate system, and the location of the centers

60. 60 Design to Meet Objectives The objectives are requirements and constraints Requirements and constraints are separate Requirements: what you are expecting from the full system or subsystem Constraints: what you are stuck with They must be specific

61. 61 Design to Meet Objectives The objectives are requirements and constraints Requirements and constraints are separate Requirements: what you are expecting from the full system or subsystem Constraints: what you are stuck with They must be specific Landing gear must be strong enough

62. 62 Design to Meet Objectives The objectives are requirements and constraints Requirements and constraints are separate Requirements: what you are expecting from the full system or subsystem Constraints: what you are stuck with They must be specific Landing gear must be strong enough Must remain elastic for 3 f/s vertical fall will transferring less that a 2 g impulse to the fuselage

63. Requirements and Constraints There MUST be requirements and constraints for the plane itself Every subsystem MUST have bulletined requirements and constraints listed separately The should have numbers and be specific

64. Fuselage Requirements Hold: 4 cell battery (based on 6 minute flight) z57 model radio receiver (with link to data sheet) 27 lbs payload at plane’s unloaded CG and wing’s CL Removable wing mount able to transfer 42 lbs from wing to fuselage. Engine mount within ± ½ in of current estimate of plane’s aerodynamic center Transfer 2 x planes full weight (84 lbs) to landing gear … Support 2.5 lb horizontal force generated by tail with rudder at full deployment …

65. 65 ME 442 Senior Project Week 3 Dr. Joseph Vignola Pangborn G43, Phone 202-319-6132, vignola@cua.eduvignola@cua.edu Tuesdays & Thursdays, 9:35-12:25 AM, Pangborn G43 Office Hours: Tuesdays, 1:00-2:00 PM

66. Week 3 Build

67. Week 3 Please email your t-shirt size to Ms. Hicks and Nicole Bull 43bull@cardinalmail.cua.edu Today I would like to see Excel budgets