1. 1 ME 442 Senior Project Week 9 Dr. Joseph Vignola Pangborn G43, Phone 202-319-6132, vignola@cua.eduvignola@cua.edu Tuesdays & Thursdays, 9:40-12:20 AM, Pangborn G43 Office Hours: Tuesdays, 1:00-2:00 PM

2. 2 The Rest of the Semester Welcome back from break

3. 3 The Rest of the Semester Each team should plan to refine their plane and take it back to the DCRC airfield. I would like each team to refine the design and construction The most important thing to me is for you to redo anything that was done in hast or “because we didn’t have time” All temporary work must me removed. Your plane should match your drawings. Mass and Mass center predicted in SolidWorks should match the predictions

4. 4 Purchases I need to see the Excel budgets today and everyday I want to be sure we are keeping careful track of all expenses.

5. 5

6. 6 The Rest of the Semester Presentations

7. 7 The Rest of the Semester Presentations I will make a schedule and send it out

8. 8 The Rest of the Semester Presentations I will make a schedule and send it out I will try to do this by tomorrow.

9. 9 Things to Purchase DC-RC club uses this model: Hitec X4 Plus AC/DC 4-Port RC Battery Charger for LiPo, LiFe, Li- Ion, NiCD, NiMH Battery charger (We found this ! ) Battery tester Heat gun, iron, and monocoat Tools each team must have their own flight toolbox

10. 10 First Presentations The first set of Individuals presentations starting next week. Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

11. 11 First Presentations The first set of Individuals presentations starting next week. Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

12. 12 First Presentations We will have the first set of Individuals presentations starting next week. Aim for 7 minutes of presentation and focus on design and how the design was translated into a prototype You should have no less that 14 PowerPoint slides There should be figures and all slides Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

13. 13 What to Include We will have the first set of presentations the second week of class. Talk about: How you made design decisions and show the fabricated result List of design goals for the full plane and each subsystem SAE wants you to should a design evolution Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

14. 14 What to Include We will have the first set of presentations the second week of class. Talk about: How you made design decisions and show the fabricated result List of design goals for the full plane and each subsystem SAE wants you to should a design evolution Lots of SolidWorks drawings of your plane or subsystem Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

15. 15 What Not to Include No need to discuss safety issues How you used your time Where you found or purchased items “because Don thought it would work” “because Don had one ” Common knowledge General theory Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

16. 16 Writing & Presentation Issues I have posted my document on writing “Writing issues for engineers”. I consider this a work in progress. There is a “First Draft Check List” in the “Writing issues for engineers” document. Please use after you finish your first draft is assembled for all documents to be turned in for this class. There is a separate section of this documents for presentations

17. Writing & Presentation Issues Will the reader or recipient know what it is? Identify your document with a descriptive title and an introductory sentence. Your document must have your name, the date, the assignment, and a title. Get in the habit of using a premade title pages for MS Word and PowerPoint Use mine as a template if you like 17 Issue 1: Information Rich Title Pages

18. Writing & Presentation Issues Make sure that your reader can quickly find the section he or she is looking for. If you are covering more then one topic, each topic needs to have a titled section. 18 Issue 2: Separate Different Topics

19. Writing & Presentation Issues Use logical sections and subsections Title each so that so that the content is obvious 19 Issues 1&2 Corollary: Sections Titles

20. 20 Writing & Presentation Issues Issue 2: Will the reader or recipient know what it is? Identify your document with a descriptive title and an introductory sentence.

21. 21 Color and other embellishments Color, you can use color but your document but figures should work in B&W if possible. Hyperlinks, you should use them but the web address must appear in a footnote or the reference section. Animations, movies and sound files can be helpful but can also be trouble. Be aware that some of your readers will not be able to access them.

22. 22 Writing & Presentation Issues I have posted my document on writing “Writing issues for engineers”. There is a “First Draft Check List” in the “Writing issues for engineers” document. Please use after you finish your first draft is assembled for all documents to be turned in for this class. There is a separate section of this documents for presentations

23. Information Rich Title Page Will the reader or recipient know what it is? Identify your document with a descriptive title and an introductory sentence. Your document must have your name, the date, the assignment, and a title. Get in the habit of using a premade title pages for MS Word and PowerPoint Use mine as a template if you like 23

24. Separate Different Topics Make sure that your reader can quickly find the section he or she is looking for. If you are covering more then one topic, each topic needs to have a titled section. 24

25. Section Titles Use logical sections and subsections Title each so that so that the content is obvious 25

26. Section Titles Use logical sections and subsections Title each so that so that the content is obvious “Introduction” is not a good subsection title for the introduction “Analysis” is not a good subsection title of the analysis section 26

27. 27 Color and other embellishments Color, you can use color but your document but figures should work in B&W if possible. Hyperlinks, you should use them but the web address must appear in a footnote or the reference section. Animations, movies and sound files can be helpful but can also be trouble. Be aware that some of your readers will not be able to access them.

28. 28 Refine Documentation Each member of the group should be sure that you bring ALL electronic files everyday SolidWorks drawings

29. 29 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

30. 30 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

31. 31 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

32. 32 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

33. 33 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

34. 34 Design Support Documents Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html 1)Gantt chart A timeline with milestones, component delivery dates, estimated dates of the completions of sub-tasks. This can be a separate Excel document. 2) Weight and drag budget A document that lists target, design and as-build weight and location for all components on the plane. Specifically state what are estimates and what was calculated in SolidWorks and what was measured as-built. Include the coordinates of the CGs for all subsystem. The coordinates must be in a defined, single coordinate system and include a figure that shows the plane, coordinate system and centers. This should be in the main MS Word document.

35. 35 Design Support Documents Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html 3) Cost budget & parts inventory A list of all component parts you will include in your plane. You should have links to data sheets. The budget should include all planed expenditures and all money spent by your group related to the project. This is can be a summary of a separate Excel spread sheet. You must save all receipts. 4) Toolbox inventory A specific list of all tools, bolts and any other hardware with sized. Do not include this in the Excel document. This should be in the main MS Word document. 5) Safety protocols Read the new School of Engineering Safety document and write a statement that indicates that you have read and will comply with all points of the School of Engineering Safety. This document must be signed by all team members.

36. 36 Design Support Documents Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html 3) Cost budget & parts inventory A list of all component parts you will include in your plane. You should have links to data sheets. The budget should include all planed expenditures and all money spent by your group related to the project. This is can be a summary of a separate Excel spread sheet. You must save all receipts. 4) Toolbox inventory A specific list of all tools, bolts and any other hardware with sized. Do not include this in the Excel document. This should be in the main MS Word document. 5) Safety protocols Read the new School of Engineering Safety document and write a statement that indicates that you have read and will comply with all points of the School of Engineering Safety. This document must be signed by all team members. Plus send Ken your SolidWorks

37. 37 Group Purchases Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html We need to purchase: charger Charge level indicator

38. 38 SAE Reports Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html Please don’t resubmit last semesters reports

39. 39 Materials and Purchasing It is very import that we straighten the budget today Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

40. 40 Materials and Purchasing It is very import that we straighten the budget today Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

41. 41 Materials and Purchasing It is very import that we straighten the budget today

42. 42 Materials and Purchasing It is very import that we straighten the budget today

43. 43 Materials I can cut materials for you to any dimension, exactly to the dimensions you give me.

44. 44 Expediency Be sure you are making design decisions based on engineering principles. Please don’t Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

45. 45 Materials Ask Ken to bring specific material you need Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html Ken

46. 46 Materials and Purchasing It is very import that we straighten the budget today There are problems with the credit card MNEY

47. 47 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

48. 48 Materials and Purchasing e-mail Hong right away to schedule time She is nicer that I am and will help you

49. 49 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

50. 50 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

51. 51 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

52. 52 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

53. 53 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

54. 54 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

55. 55 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

56. 56 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

57. 57 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

58. 58 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

59. 59 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

60. 60 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

61. 61 Money Lets start with the group that has the most people here Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

62. 62 Money Thanks for the help resolving the credit card issues Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

63. 63 Flight Testing Jim and Ed want to test Monday, Feb 24 Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

64. 64 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

65. 65 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

66. 66 So Given the Calendar Work with Ken, Hong, Don, and Me Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

67. 67 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

68. 68 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

69. 69 Myths and Truths Myths Gorilla Glue is no stronger than ordinary carpenters glue Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

70. 70 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

71. 71 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

72. 72 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

73. 73 Myths and Truths Truths Round holes are easier to make then not round holes Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html

74. 74 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

75. 75 You need to know where the CG is Weighted averages. x y

76. 76 Mass and Aerodynamic Centers Weighted averages. x y

77. 77 Mass and Aerodynamic Centers Weighted averages. Pick an origin x y

78. 78 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

79. 79 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

80. 80 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

81. 81 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

82. 82 Mass and Aerodynamic Centers x z 51.2 cm Once you have them… DRAW A FREE BODY DIAGRAM

83. 83 Mass and Aerodynamic Centers Once you have them Then sum forces and moments mg thrust Wing drag tail drag fuselage drag

84. 84 Mass and Aerodynamic Centers Once you have them Then sum forces and moments mg thrust Wing drag tail drag fuselage drag x z

85. 85 Mass and Aerodynamic Centers Once you have them Then sum forces and moments mg thrust Wing drag tail drag fuselage drag x z

86. 86 Mass and Aerodynamic Centers Once you have them Then sum forces and moments mg thrust Wing drag tail drag fuselage drag x z

87. 87 Mass and Aerodynamic Centers Once you have them Then sum forces and moments mg thrust Wing drag tail drag fuselage drag x z

88. 88 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

89. 89 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

90. 90 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

91. 91 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

92. 92 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

93. 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

94. 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 …

95. 95 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

96. Week 3 Build

97. 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