Students at Missouri University of Science and Technology showed no fear
last week by beating six other university teams in a chemical reaction-powered,
autonomous vehicle competition held in Lincoln, Neb. The team’s “UMR Ghost” car
earned the team a return trip to the national competition set for November in
Philadelphia, Pa.
The competition was part of the two-day 2007 American Institute of Chemical
Engineers (AIChE) Mid-America Regional Conference. The Chem-E Car competition
challenged students to design and build a shoebox-sized car that could carry an
additional load a specified distance. The car stopped 34 inches away from the
line.
The “UMR Ghost” is run by a lead-sulfuric acid battery which powers a small
motor. The stopping mechanism consists of the production of carbon dioxide. The
gas displaces water from one vessel to another, raising a small ball until a
photo sensor detects the ball’s interference and cuts the circuit to the motor
to stop the car. The Missouri S&T team optimized the amount of chemicals
needed to produce carbon dioxide at a rate so that the photo sensor shut off
the motor after the required amount of time — and distance — has passed.
Members of the Missouri S&T Chem-E Car Team include:
Dr. Daniel Forciniti, professor of chemical and biological engineering, is
the team’s advisor.