When i was looking for a good set of plans for a floating arm trebuchet, i couldn’t find a single free one. I know that a lot of people share my frustration in not. This is the floating arm trebuchet with a sling. The 5 degrees of freedom are the x and y coordinates of the projectile, the height of the counterweight, and the. How to Simulate a Trebuchet Part 3: The Floating-Arm Trebuchet. The illustration above gives a diagram of a “floating-arm” trebuchet. The floating-arm type is.
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The floating arm trebuchet uses a counterweight held on top of a tall drop channel to transfer potential energy into kinetic energy. Upon releasing the trigger, the counterweight is allowed to drop through the channel.
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. 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. A regular trebuchet is a better realistic war machine. 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.
Floating arm trebuchet
Large scale designs require special trigger mechanisms that can hold the weight of the throwing arm. The Floating Arm Trebuchet is a counterweight siege weapon which is a modern variation  of the medieval trebuchet.
Retrieved from ” https: Retrieved November 15, floatihg The arm is on a moving axle and the torque acts on the entire structure, preventing stalling. The design and construction trebucuet such machines is a popular project assignment in post-secondary engineering classes.
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. This page was last edited on 5 Aprilat To reduce friction of the sling on the launch track, the track should have a smooth surface.
While this is happening, the wheel is moved backwards by the torque acting on the arm from the counterweight. In larger designs, the trigger system is applied at the top of the drop channel. Views Read Edit View history. The most common of several foating mechanisms is two eye bolts and a peg through both bolts. Kids Learn by Making Stuff.
Reducing the drop distance of the wheel axle to the glide track would reduce damage, but also reduce the range of the trebuchet. While the floating arm design can have a lighter frame 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 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.
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. Perdue 15 November To reset the device, the counterweight must be raised back to the original height and locked in with the trigger mechanism.
The 5DOF Floating Arm Trebuchet
Friction when the counterweight is dropping down to the glide strike can be trbuchet by using silicone grease or a thin film of plastic on the drop channel. Retrieved November 13, In contrast, a floating arm trebuchet features an axle on the arm freely moving along a horizontal glide track. A floating arm trebuchet has three points of contact where friction can interfere with efficiency. This linear drop of the counterweight is more efficient in transferring potential energy trebuvhet kinetic energy than the pendulum counterweight motion of a traditional trebuchet.