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This linear drop of the counterweight is more efficient in transferring potential energy to kinetic energy than the pendulum counterweight motion of a traditional trebuchet. In larger designs, am trigger system is applied at the top of the drop channel.

From Wikipedia, the free encyclopedia. Perdue 15 November Technology on Your Time.

Views Read Edit View history. The design and construction of such machines is a popular project assignment in post-secondary engineering classes. By using this site, you agree to the Terms of Use and Privacy Policy.

A traditional trebuchet, which is simple to engineer, consists of an arm resting off-centre on an axle with a hinged counterweight at the short end of the grebuchet. The dropping of the counterweight forces the arm to swing to one side of the glide track and quickly jerk in the opposite direction to launch a projectile. This page was last edited on 5 Aprilat Kids Learn by Making Stuff.

Floating arm trebuchet by Freddy Moreno on Prezi

The floating arm trebuchet loses the range advantage over regular trebuchet at very large scales, because the difficulty in construction of the drop channel and axle increases with size. Retrieved November 15, In contrast, a floating arm trebuchet trebucbet an axle on the arm freely moving along a horizontal glide track. Retrieved November 13, planw Their defining feature is free movement of an axle on the throwing arm, [2] and a linear drop channel for the counterweight.


The floating arm trebuchet uses a counterweight held on top of a tall drop channel to transfer potential energy into kinetic energy. The arm is on a moving axle and the torque acts on the entire structure, preventing stalling. The release mechanism is a hook with a specific bend in its olans to determine when centripetal force will release one end of the sling, freeing the projectile to continue on its path. To reset the device, the counterweight must be raised back to the original height and locked in with the trigger mechanism.

The most common of several trigger mechanisms is two eye bolts and planns peg through both bolts. While this is happening, the wheel is moved backwards by the torque acting on the arm from the counterweight.

The sling or pouch, which contributes to acceleration of the projectile and then releases it at the desired launch angle, is often made using polyester rope or other durable thin material. The Floating Arm Trebuchet is a counterweight siege weapon which is a modern variation [1] of trebuceht medieval trebuchet.

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Floating arm trebuchet

Retrieved from ” https: A floating arm trebuchet has three points of contact where friction can interfere with efficiency. Upon releasing the trigger, the counterweight is allowed to drop through the channel. Trebucget reduce friction of the floqting on the launch track, the track should have a smooth surface. However, a floating arm trebuchet is more efficient when built to a size of between one meter and five meters, [6] making it suitable for hobbyists and model builders.

Friction when the counterweight is dropping down to the glide strike can be reduced by using silicone grease or a thin film of plastic on the drop channel.

While the floating arm design can have a lighter frame than a traditional trebuchet because the overall forces produces are less, [5] the impact of the arm on the glide track will cause eventual damage and may need maintenance.

Large scale designs require special trigger mechanisms that can hold the weight of the throwing arm. Reducing the drop distance of the wheel axle to the glide track arrm reduce damage, but also reduce floatinf range of the trebuchet.

Five Machines That Changed the World. A regular trebuchet is a better realistic war machine.