Since its construction in 1929, Building 31 has been the site of key research advances in the fields of engine design, advanced propulsion systems, and fluid mechanics. Currently occupied by the Department of Aeronautics and Astronautics and the Department of Mechanical Engineering, the building supports the activities of approximately 150 faculty, students, and researchers.

The facility’s original three sections (its east and west wings, and a high bay area) were all built at separate times. Before the renovation, none of the floors aligned between the sections, and the building had no elevators, making internal circulation and movement challenging.

The renewal of Building 31 modernized its structure and systems while also addressing MechE and AeroAstro programming needs. Enhancements include new and renewed office, lab, and common spaces as well as the new Kresa Center for Autonomous Systems – an 80 ft. by 40 ft. space with 25-ft. ceilings, custom designed for MIT’s work with all types of autonomous vehicles, including rotor and fixed-wing aircraft. The building also features indoor test spaces for unpiloted aerial vehicles, a roof deck for flying robotics, and upgraded, relocated supersonic and subsonic tunnels.

Structural reconfigurations in Building 31 are designed to add capacity and encourage collaboration by connecting the different areas within the building. The reconstructed and expanded main entry provides distinctive introductions to each department and resolves circulation issues with improved way-finding.  The project is seeking LEED Gold certification.