The Combustion Module-1 (CM-1), NASA's largest (over 1800 lb) and one of the most sophisticated combustion experiments ever to fly on the Spacelab, will be carried on the first Microgravity Science Laboratory (MSL-1) mission aboard the space shuttle flight STS-83 in April 1997. The combustion module 1 (CM-1) is being developed to accommodate microgravity combustion experiments designed to help explain and predict the behavior of combustion processes. CM-1 is planned for flight in the Microgravity Science Laboratory 1 (MSL-1) Spacelab module