Murlin Trebuchet
http://www.instructables.com/id/The-Marshmallow-Trebuchet/step1/A-Little-History-Design-Selection/
Summary
The way the Murlin Trebuchet works is by hanging a mass connected to a piece of rope that is wrapped around several arms to increase the tension in the rope. Once the mass drops the rope well speed up and get faster due to acceleration, launch the object out of the sling. I would like to work on this Trebuchet because it seems like the most efficient way of getting a far distance out of a Trebuchet. Even though it seems complex in the building process, I looking forward too the challenge in building the Murlin Trebuchet.
Case Study #1
Rating (7/10)
Positives
- Gives a good description of the Murlin trebuchet and the task/ building process one has to go through to build a successful trebuchet.
- Also it explains why the Murlin is the most efficient trebuchet out of the three others.
- Has helpful videos and pictures exampling how the trebuchet works.
Negatives
- Doesn't give information on the dimensions used to build the trebuchet.
- Key information is blocked by the school security system.
Case Study #2
Rating (7/10)
Positives
- Involves a video to show how Trebuchet works.
- Explains difficulties in the building process.
- Explains the positives and the building process.
Negative
- Doesn't state dimensions of Trebuchet.
- Not as much information as in Case study #1.
Looking at the MURLIN contraption it would seem that the configuration of the splines puts the rope into a fibbonacci spiral. This makes sense. The Fibonacci sequence occurs all over nature as being one of the most efficient shapes in the universe. Not surprising that a fibbonacci ratio between the splines yields the most efficient transfer of energy
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