1 me 442 senior project week 4 dr. joseph vignola pangborn g43, phone 202-319-6132,...
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ME 442 Senior Project Week 4
Dr. Joseph VignolaPangborn G43, Phone 202-319-6132, [email protected]
Tuesdays & Thursdays, 9:35-12:25 AM, Pangborn G43
Office Hours: Tuesdays, 1:00-2:00 PM
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Word of the DayDo you know the word obfuscate ?
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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Word of the DayDo you know the word obfuscate ?
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
Please don’t obfuscate
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Word of the DayDo you know the word obfuscate ?
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
Please don’t obfuscateIf a question start withHow many…?
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Word of the DayDo you know the word obfuscate ?
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
Please don’t obfuscateIf a question start withHow many…?
The answer should include a number
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DocumentationPlease bring all your electronic files everyday
SolidWorks drawings
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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DocumentationPlease bring all your electronic files everyday
SolidWorks drawingsExcel budget
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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DocumentationPlease bring all your electronic files everyday
SolidWorks drawingsExcel budget, must be this version or have this information
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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DocumentationPlease bring all your electronic files everyday
SolidWorks drawingsExcel budget, must be this version or have this information
Item(s)Date of purchaseSupplierDate receivedTotal 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
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DocumentationPlease bring all your electronic files everyday
SolidWorks drawingsExcel budget
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
It’s best to use the document that I started
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DocumentationPlease bring all your electronic files everyday
SolidWorks drawingsExcel budget
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
It’s best to use the document that I startedIt’s on the class web page
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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
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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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
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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PurchasesI need to see the Excel budgets today and everyday
I want to be sure we are keeping careful track of all expenses.
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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Materials and PurchasingIt is very import that we straighten the budget today
We have $1630.32 of unattributed expenses related to Senior Design.
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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Materials and PurchasingIt is very import that we straighten the budget today
We have $1630.32 of unattributed expenses related to Senior Design. This is January only
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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Materials and PurchasingIt is very import that we straighten the budget today
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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Materials and PurchasingIt is very import that we straighten the budget today
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
Ms. Hicks
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Materials and PurchasingIt is very import that we straighten the budget today
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
Ms. HicksYou want her on your side
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Materials and PurchasingIt is very import that we straighten the budget today
There will be problems with the credit card
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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Materials and PurchasingIt is very import that we straighten the budget today
There will be problems with the credit card
From now own I must approve all purchases
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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Materials and PurchasingIt is very import that we straighten the budget today
There will be problems with the credit card
Ask Ken to bring specific material you need
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
MNEY
Ken
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Materials and PurchasingIt is very import that we straighten the budget today
There will be problems with the credit card
Ask Ken to bring specific material you need
Dimensioning lumber
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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Materials and PurchasingIt is very import that we straighten the budget today
There will be problems with the credit card
Ask Ken to bring specific material you need
Dimensioning lumber
e-mail Hong right away to schedule time
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Materials and PurchasingIt is very import that we straighten the budget today
There will be problems with the credit card
Ask Ken to bring specific material you need
Dimensioning lumber
e-mail Hong right away to schedule timeShe will help you.
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Machine ShopPlease 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
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Machine ShopPlease 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
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Assignment 2Fix assignment 1
A number of groups did not submit assignment 2 or didn’t really update anything
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Assignment 2Fix 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
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Assignment 2Fix 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 forPlease don’t list random items
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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Assignment 2Fix 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 forPlease don’t list random items ¼” screws
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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Assignment 2Fix 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 forPlease don’t list random items ¼” screws, a hammer
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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Assignment 2Fix 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 forPlease don’t list random items ¼” screws, a hammer, weed wacker
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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Assignment 2Fix 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
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Money
Lets start with the group that has the most people here
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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Money
Thanks for the help resolving the credit card issues
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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Flight Testing
Jim and Ed want to test Monday, Feb 24
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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Flight Testing
Jim and Ed want to test Monday, Feb 24
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
I’m still working on this
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Flight Testing
Jim and Ed want to test Monday, Feb 24
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
S M T W Th F S
6 Today 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 Flight Test
25 26 27 28 29
I’m still working on this but the big issues is
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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
S M T W Th F S
6 Today 7 8
9 10 11 12 13 14 15
16 17 18 tech insp taxi test
19 20 21 22
23 24 25 Flight Test
26 27 28 1
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Flight TestingI’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
S M T W Th F S
6 Today 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 Flight Test
25 26 27 28 29
I’m still working on this but the big issues is
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So Given the Calendar
Work with Ken, Hong, Don, and Me
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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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
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Myths and TruthsMyths Gorilla Glue is no stronger than ordinary carpenters glue
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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Myths and TruthsMyths 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
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Myths and TruthsMyths 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
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Myths and TruthsMyths 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
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Myths and TruthsTruthsRound holes are easier to make then not round holes
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Myths and TruthsTruthsRound holes are easier to make then not round holes
Hong needs some sleep
Taken from http://patheoldminer.rootsweb.ancestry.com/faybuffington.html
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Mass and Aerodynamic Centers Weighted averages. Pick an origin, make a table
x
y
component Mass (kg) x-location (cm)
engine 0.45 -3
fuselage 2.1 75
Wing 2.3 27
Front landing gear 0.35 12
Rear landing gear 0.64 34
Fuel tank 0.33 8
Radio reciever 0.25 7
tail 0.75 150
Payload
Total 7.17 319
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Mass and Aerodynamic Centers Weighted averages. Pick an origin, make a table
x
y
component Mass (kg) x-location (cm)
engine 0.45 -3
fuselage 2.1 75
Wing 2.3 27
Front landing gear 0.35 12
Rear landing gear 0.64 34
Fuel tank 0.33 8
Radio reciever 0.25 7
tail 0.75 150
Payload
Total 7.17 319
51.2 cm
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Mass and Aerodynamic Centers Each component that is exposed to the exterior flowHas 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
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Mass and Aerodynamic Centers Each component that is exposed to the exterior flowHas 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
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Mass and Aerodynamic Centers Once you have them Then sum forces andmoments
mg
thrust
Wing drag
tail drag
fuselage drag
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Mass and Aerodynamic Centers Once you have them Then sum forces andmoments
mg
thrust
Wing drag
tail drag
fuselage dragx
z
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Mass and Aerodynamic Centers Once you have them Then sum forces andmoments
mg
thrust
Wing drag
tail drag
fuselage dragx
z
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Mass and Aerodynamic Centers Once you have them Then sum forces andmoments
mg
thrust
Wing drag
tail drag
fuselage dragx
z
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Mass and Aerodynamic Centers Once you have them Then sum forces andmoments
mg
thrust
Wing drag
tail drag
fuselage dragx
z
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Mass and Aerodynamic Centers This summing for moments is precisely the same as the weighted average
x
z
51.2 cm
component Net drag (N) z-location (cm)
x-location (cm
fuselage 2.7 5 44
Wing 15.3 17 45
Front landing gear
3.5 -12 34
Rear landing gear
5.8 -11 76
tail 13.7 21 125
Total 40.7
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You MUST include this informationThis summing for moments is precisely the same as the weighted average
x
z
51.2 cm
component Net drag (N) z-location (cm)
x-location (cm
fuselage 2.7 5 44
Wing 15.3 17 45
Front landing gear
3.5 -12 34
Rear landing gear
5.8 -11 76
tail 13.7 21 125
Total 40.7
So have a figure with YOUR plane, a coordinate system, and the location of the centers
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Design to Meet ObjectivesThe 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
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Design to Meet ObjectivesThe 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
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Design to Meet ObjectivesThe 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
Requirements and ConstraintsThere 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
Fuselage RequirementsHold: 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 CLRemovable wing mount able to transfer 42 lbs from wing to fuselage. Engine mount within ± ½ in of current estimate of plane’s aerodynamic centerTransfer 2 x planes full weight (84 lbs) to landing gear…
Support 2.5 lb horizontal force generated by tail with rudder at full deployment…
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ME 442 Senior Project Week 3
Dr. Joseph VignolaPangborn G43, Phone 202-319-6132, [email protected]
Tuesdays & Thursdays, 9:35-12:25 AM, Pangborn G43
Office Hours: Tuesdays, 1:00-2:00 PM
Week 3
Please email your t-shirt size to Ms. Hicks and Nicole Bull
Today I would like to see Excel budgets