The XPULT catapult was developed by Professors Terwiesch and Ulrich at the University of Pennsylvania for use in science projects, science education, and for teaching spc, design of experiments, and process improvement.

The Xpult is an experimental catapult that can complement or substitute for expensive catapults such as the statapult. The xpult catapult was designed for teaching six sigma, process capability, design of experiments, experimental design, and statistical process control. The XPULT catapult is a popular school science project and is used in science fairs for school children. Kids love the xpult catapult as much as university students, faculty, and corporate trainers.