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# 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.

- U.S. Elements   - Unity Module
  - Destiny Laboratory Module
  - External Stowage Platform-1
  - External Stowage Platform-2
  - External Stowage Platform-3
  - Harmony Module
  - EXPRESS Logistics Carrier-1
  - EXPRESS Logistics Carrier-2
  - Tranquility Module
  - Cupola
  - EXPRESS Logistics Carrier-4
  - Alpha Magnetic Spectrometer-2
  - EXPRESS Logistics Carrier-3
  - Bigelow Expandable Activity Module
  - NanoRacks Bishop Airlock
- International Elements   - Zarya Module
  - Zvezda Service Module
  - Canadarm2 Robotic Arm
  - Pirs Docking Compartment
  - Mobile Base System
  - Columbus Laboratory Module
  - Japanese Logistics Module
  - Dextre
  - Kibo Laboratory Module
  - Japanese Exposed Facility
  - Poisk Mini-Research Module
  - Rassvet Mini-Research Module
  - Permanent Multipurpose Module
  - Nauka Multipurpose Laboratory Module
  - Prichal Docking Module
- Truss Segments/Solar Arrays   - Zenith-1 (Z1) Truss
  - Port-6 (P6) Truss
  - Starboard-0 (S0) Truss
  - S1 Truss
  - P1 Truss
  - P3/P4 Truss
  - P5 Truss Spacer
  - S3/S4 Truss
  - S5 Truss Spacer
  - S6 Truss Spacer
  - Roll-Out Solar Arrays 2B/4B
  - Roll-Out Solar Arrays 3A/4A
  - Roll-Out Solar Arrays 1A/1B

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

## More Humans in Space Topics

Space Station Research and Technology

Station Benefits for Humanity

Astronauts

Humans In Space