If you go to the Lake Orion Pumpkin Launch and want to help collect information here are some questions you can ask.
Trebuchet
data collection sheet
Information:
Please ask permission to interview the
people who designed and made the trebuchet.
Name of their Team/Machine: ________________________
Ask if you can take a picture or two.
· Record the image
numbers and who's camera was used:
______________________________________
· Could you have
their contact information if you have any follow up questions?
Name:
_____________________________________
Phone: ________________________________
Email:
_____________________________________________________________________________
Design:
· Did they use a
computer model to design their trebuchet?
____________________________________
· Which one? ________________________________________________________________________
· Did the model
accurately predict the range of the machine? ___________________________________
· Was the model easy
to use and would they recommend it? ____________________________________
· How do you decide
on the length of the arm and lever? _______________________________________
· How do you decide
how long the sling rope should be? ______________________________________
· How should the
sling be shaped/made so that the pumpkin release is reproducible? _________________
· How do you make the
release pin and how is it adjusted? _____________________________________
· How do you load,
cock and fire you trebuchet? _____________________________________________
· Do you have safety
procedure? Will you share a copy? _____________
· Any general design
advice for a group just starting out? ______________________________________
Performance:
· How big does the
counterweight have to be to fire a pumpkin? _________________________________
· Why wouldn't you
just make a bigger weight to increase the range? _____________________________
· If the pumpkin
flies higher does it go further? ______________________________________________
· How do you keep it
firing straight? ______________________________________________________
· Can you
"tune" the firing distance? _______________________________________________________
· How do you do that?
__________________________________________________________________
· Why do some
trebuchets have wheels? ____________________________________________________
· What determines
accuracy? _____________________________________________________________
· We are thinking
about making 1/4 or 1/2 scale models to practice with before we build full
scale versions. Do you see any problems with that? _____________________________________________________
· How to ensure
consistent placement of sling on guide track and shaping of guide track to
facilitate that consistency. ________________________________________________________________________
Materials:
- What materials are used in construction of division entries _____________________________________
____________________________________________________________________________________
o Dimension of lumber
_______________________________________________________________
o joining materials
& sizes of fasteners (e.g. 1" threaded rod as opposed to smaller sizes
that fail under repeated loading…)
____________________________________________________________
- Different materials used for weights? What unit weights to create to adjust power? _________________
_____________________________________________________________________________________
- Sling materials? Different mechanisms or modalities to employ in securing one side of the sling? _____________________________________________________________________________________
- Different materials used for weights? What unit weights to create to adjust power? ___________________
_____________________________________________________________________________________
- Trebuchet secured in place how during firing? Adjustment from front or back for aiming? ____________
_____________________________________________________________________________________
Could we contact you with specific questions in the future? ______________
Your name_______________
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