Transportation Category Winner, "Create the Future" 2007 Design
Contest  Winner of an HP Workstation  Internally Radiating
Impulse Structure (IRIS) Engine  Corban Tillemann-Dick  Tendix
LLC  Denver, CO  The vast majority of internal combustion
engines we use for transportation and commerce run at
approximately 25% efficiency. Tendix LLC has developed a new
family of engines that dramatically enhance fuel efficiency,
effectively prolonging the viability of global petroleum
reserves, and significantly reducing emissions of greenhouse
gases.  ImageThe Internally Radiating Impulse Structure (IRIS)
overcomes many of the underlying shortcomings of modern engines
by fundamentally changing the geometry of the combustion
chamber. The IRIS changes the combustion chamber’s design from
one piston in a cylinder to six “chordons,” which act as
expanding walls. Existing chamber designs become longer during
combustion. In contrast, the IRIS chamber expands in diameter.
This design innovation means the vast majority of the IR