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Floating arm trebuchet – Wikipedia
The release mechanism is a hook with a specific bend in its tip to determine when centripetal force will release one end of the sling, freeing the projectile to continue on its path.
Retrieved Yrebuchet 13, While this is happening, the wheel is moved backwards by the torque acting on the arm from the counterweight. A regular trebuchet is a better realistic war machine. A floating arm trebuchet has three points of contact where friction can interfere with efficiency. In contrast, a floating arm trebuchet features an axle on the arm freely moving along a horizontal glide track.
Floating arm trebuchet by Freddy Moreno on Prezi
The floating arm trebuchet uses a counterweight held on top of a tall drop channel to transfer potential energy into kinetic energy. Reducing the drop distance of the wheel axle to the glide track would reduce damage, but fliating reduce the range of the trebuchet. The arm is on a moving axle and the torque acts on the entire structure, preventing stalling.
From Wikipedia, the free encyclopedia. While the floating arm design can have a lighter trebucheg than a traditional trebuchet because the overall forces produces are less,  the impact of the arm on the glide track will cause eventual damage and may need maintenance.
The Floating Arm Trebuchett is a counterweight siege weapon which is a modern variation  of the medieval trebuchet. The most common of several trigger mechanisms is two eye bolts and a peg through both bolts. 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.
In larger designs, the trigger system is applied at the top of the drop channel. Perdue 15 November Kids Learn by Making Stuff. 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. To reset the device, the counterweight must be raised back plajs the original height and locked in with the trigger mechanism.
However, a floating arm trebuchet is more efficient when built to a size of between one meter and five meters,  making it suitable for hobbyists and model builders. To reduce friction of the sling on the launch track, the track should have a smooth surface. Upon releasing the trigger, the counterweight is allowed to drop through the channel.
Floating arm trebuchet
Views Read Edit View history. Retrieved November 15, 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. Retrieved from ” https: 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 arm.
Five Machines That Changed the World. This page was last edited on 5 Aprilat This linear drop of the counterweight is more efficient in transferring potential energy to kinetic energy than the pendulum counterweight motion of a traditional trebucht. The design and construction of such machines is a popular project assignment in post-secondary engineering classes.
Their defining feature is free movement of an axle on the throwing arm,  and a linear drop channel for the counterweight. Friction when the counterweight is dropping down to the glide strike can be reduced by using silicone grease or a thin film of trebuchhet on the drop channel.