Make your own free website on Tripod.com

The Little Trebuchet That Could

Testing Procedures

Home
Science of a Trebuchet
Building a Simple Trebuchet
Materials
Trebuchet Sketch
Construction Photos
Testing Procedures
Meaurements and Calculations
Beastly Changes and Discoveries
Birth of BEAST 2
beast 3
The Designers

The following is how we tested our trebuchet.

TESTING PROCEDURES:

Numerous tests were completed upon the completion of Beast Jr.  Certain sets of tests focus on a specific variable looked at.  The effect of changing these variables one at a time allows us to increase the trebuchet’s efficiency.  Some of the things examined included counter weight, sling length, launch angle, and drop height of the counter weights.  Through experimenting, we saw that higher counter weights and higher drop distances results in a greater range of the projectile.  A very short sling length does not give enough hurling power.  However, slings that are too long will also give inadequate results, the sling is too long for the counter weight to exert enough centripetal force on the projectile to keep it in circular motion.  In our trebuchet, we found that the trebuchet works best when the sling length is similar to the arm length.  Our launch angle was determined by a nail stuck into the end of the arm; the sling has a loop at the end which allows it to slide off the nail when the arm reaches the top of its swing.  We determined the nail must be positioned at 90 degrees to the arm in order to give the best results.

dscf0239.jpg
The Little Trebuchet That Could