The Research Double Module (RDM) was a payload module built by Spacehab Inc (now Astrotech Corporation) for the US Space Shuttle Orbiters.^[1][2][3] The module flew only on the ill-fated Space Shuttle Columbia STS-107 mission, in which it was destroyed.^[4]

The inaugural flight of Spacehab's research double module, which launched January 2003 on STS-107, ended when the Space Shuttle Columbia broke up during re-entry. In February 2003 Spacehab received $17.7 million from its commercial insurance policy. In January 2004, Spacehab filed a formal claim against NASA for the amount of $87.7 million for the loss caused by the Columbia accident and in October 2004 NASA paid the company $8.2 million.^[5][6] In February 2007, Spacehab dropped all litigation against NASA.^[7]

• Other Spacehab hardware:
  • Integrated Cargo Carrier
  • External Stowage Platform
• Spacelab, European reusable laboratory flown in the Shuttle orbiter's cargo bay