Universal Docking Module

The Universal Docking Module (UDM) (Template:Lang-ru) was a planned Russian docking module for the International Space Station, to be jointly built by RKK Energia and Khrunichev. The original design would have it docked to the nadir (Earth-facing) Zvezda service module docking port, and have four docking ports to accommodate the two Russian Research Modules, Template:Cfact and the SO2 docking compartment. Because the Template:Cfact, SO2, and a Research Module were cancelled due to lack of funds, this module was also cancelled. The one remaining Research Module was then scheduled to be fitted to the open docking port on Zvezda. Later it was also canseled and that port was allocated to the Docking Cargo Module. DCM scheduled location was later moved to Zarya.

In the current plans the Zvezda nadir location is scheduled to be used by the Multipurpose Laboratory Module. Additionaly the SO2 was put back in the plans, but relocated to Zvezda zenith location (the location for the canceled SPP).

RKK Energia, the manufacturer of the ROS components, proposes to execute a similar to the original ISS plan with the addition of a Nodal Module (modification of the UDM design to increase the number of docking ports from 4 to 6 and to take into account its location at MLM nadir) and two additional science/energy modules to the segment around 2013-2015.

External links

• NASA assembly sequence - Updated December 8, 2006
• Space Events diary July-September 2001 .pdf - There is a paragraph stating the UDM was cancelled and to be replaced with the 70% complete FGB-2, with modifications
• FGB-2 module - An article written in Aug. 10, 2001, discussing the plans for UDM and FGB-2