  Previous work has presented both a theoretical foundation for designing
terrain park jumps that control landing impact and computer software to
accomplish this task. US ski resorts have been reluctant to adopt this more
engineered approach to jump design, in part due to questions of feasibility.
The present study demonstrates this feasibility. It describes the design,
construction, measurement and experimental testing of such a jump. It improves
on previous efforts with more complete instrumentation, a larger range of jump
distances, and a new method for combining jumper- and board-mounted
accelerometer data to estimate equivalent fall height, a measure of impact
severity. It unequivocally demonstrates the efficacy of the engineering design
approach, namely that it is possible and practical to design and build free
style terrain park jumps with landing surface shapes that control for landing
impact as predicted by the theory.
