The ability to perform large altitude changes for the purpose of achieving meaningful trajectory control has long been an objective of stratospheric balloon operations. This proposal outlines a novel approach to altitude control for the purpose of trajectory control with the possibility of station keeping at certain times of year. The system proposed is the second generation of an altitude control system developed by World View. The design is utilizing components that are currently being manufactured using specifications developed using the data obtained during the flight of the first generation system. The flight will demonstrate the capability of the system to command altitudes within the nominal operating range of 60,000ft to 80,000ft. The flight will also demonstrate the lower limit of altitude control by commanding the altitude to descend to the lowest simulated altitude (20,000ft). Finally the system will demonstrate the potential to perform altitude changes for the purpose of station keeping.