Permanent Multipurpose Module
Quick Facts
Space shuttle Discovery delivered the Permanent Multipurpose Module in its payload bay and was installed to the orbital outpost on March 1, 2011.
The PMM was relocated from its original port on the Earth-facing side of the Unity module to the Tranquility module’s forward port on May 27, 2015.
Astronauts regularly work inside the PMM, now attached to the Tranquility module, stowing and organizing cargo.
Derived from the Leonardo Multipurpose Logistics Module (MPLM), the Italian-built Permanent Multipurpose Module (PMM) is a large, reusable pressurized element that was originally used to ferry cargo back and forth to the station. It added 2,472 additional cubic feet of pressurized volume for storage and for scientific use, and it can hold up to 16 racks of equipment, experiments and supplies. It also has an end-cone that has additional storage space for cargo bags and other items.
Mass: 9,784 pounds
Length: 21.7 feet
Exterior Diameter: 14.76 feet
Interior Diameter: 13.81 feet
Pressurized volume: 2708.6 cubic feet
Cargo capability: 20,000 pounds
Habitable volume: 1,095 cubic feet
Mission Overview
Launch: 2/24/11
Installation: 3/1/11
Assembly Mission: ULF5
Shuttle Mission: STS-133
Vehicle: Space Shuttle Discovery
Crew on station: Expedition 26
Relocation: May 27, 2015
