Go to www. This is a Free Community Event. Registration is Required. Come launch your engineering dreams at our 12th Annual Pumpkin Launch. What is Pumpkin Launch? Pumpkin Launch is a free-community event for students and families to participate in a fun-filled STEM festival at a university campus. Contestants use the principles of STEM to build trebuchet machines that send pumpkins high in the sky and towards targets that line the field. The team with the highest score wins the Pumpkin Launch trophy!
The FREE Event provides hands-on activities for students and families to design and build their own launching devices, test their machines and enjoy some mini competition. Sacramento St. Lodi, CA Everyone is guaranteed to have a blast as the WOW invites you to bring your pumpkins and jack-o'-lanterns to the museum and watch them fly! Don't toss out those post-Halloween pumpkins or let them waste away on your porch. In Ellsworth, Trey Melson, Bill Thompson and Donald "Doc" Pepper began experimenting with punkin chunking after reading an article about a physics class that that threw pumpkins as an exercise in energy and mass.
Previous to this, the group held an anvil tossing competition. The longest shot, or "chunk" the group recorded that year was feet [ World Championship Punkin Chunkin Association ]. Compare that to the world-record holders, air cannon team Young Glory III's 4,chunk, and it's evident that the event is becoming more and more competitive, with teams putting their engineer skills to the test not to mention specially grown "aerodynamic pumpkins [ Science Channel ].
Teams compete in divisions such as air cannon, centrifugal, catapult, human power, trebuchet , theatrical and torsion. The competition is divided into three classes: Adult 18 and older , Youth 11 to17 and Youth under age Many of the pumpkin-throwing machines are mechanical in design. The current record holders use compressed air. Some teams use scrap metal, which can greatly reduce the cost. Punkin Chunkers have a few options when it comes to streaking the skies with squash.
All are based on the concept of force, power and torque:. Any machine using compressed air to launch a pumpkin is called an air cannon. Air is compressed into a tank. When the constraint holding that air is removed, air expands back to its normal volume. The result is released air acts like a spring and forces the pumpkin through the tube at great volume, expelling the pumpkin out. A machine using stretched springs or rubber bands, which store energy. When the springs or bands are pulled and then released, the stored up energy is transferred to the arm of the device, which hurls the pumpkin.
A Torsion machine is any device that uses twisted rope as its primary source of power. It relies on a rope that works by torsion or twisting.
The rope stores mechanical energy when it is twisted. The amount of force it releases is proportional to the amount it is twisted. Any machine with an arm that spins at least degrees to launch a pumpkin. The basic idea in a centrifugal is to accelerate a pumpkin by spinning it in a circle many times, with each rotation gaining more and more momentum until it can build up enough energy to propel the pumpkin forward.
The basic idea of a trebuchet is to transform the potential energy stored in the lifted heavy mass into the kinetic energy that is the motion of the smaller mass the pumpkin. It uses a short arm, which is weighted down with a heavy object to counterbalance against the long arm, where the projectile the pumpkin is placed.
When the heavy mass of the short arm falls down, it provides energy to fling the long arm. Get an in-depth look at "the history and rules of the struggle for pumpkin-launching supremacy" on "Punkin Chunkin," premiering Thursday, Nov.
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