Interim Control Module

[1] It was derived from a formerly-classified Titan Launch Dispenser used to distribute reconnaissance satellites to different orbits.

In 1997 NASA requested that the Naval Research Laboratory study the feasibility of adapting an existing, heritage spaceflight system to provide low-cost, contingency propulsion operations for the International Space Station (ISS).

After determining that the system could be adapted in time to meet NASA's schedule requirements, NRL was granted authority to proceed with the Interim Control Module (ICM).

From its inception ICM was a contingency option for attitude control and reboost of the ISS that would allow NASA to preserve the on-orbit construction schedule in case of delays in the launch of the Russian Service Module.

The ICM has also been suggested as an integral part of a new telescope based on unused spy satellite hardware,[6] and even for use in its original role in the event of removal of the Russian Orbital Segment of the ISS.