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Constellation-X

Constellation-X Spacecraft Configuration

The mission reference configuration for the Constellation-X mission is for single satellite launched by a Atlas V 551 vehicle to an L2 orbit. This single satellite would meet the Constellation-X performace requirements.

The four-spacecraft Constellation-X configuration in space Single satellite configuration

The single-satellite Constellation-X configuration

Configuration evolution

A number of configuration changes have been adopted the last two years in order to provide substantial mission cost savings. First, the team re-packaged all telescopes and instruments as specified for the 4-satellite configuration into a single spacecraft onboard a Delta IVH launch vehicle, providing substantial cost savings over the two Atlas V launches that had been the baseline. Second, the team went back to the drawing board on the designs and requirements for the gratings (XGS) and hard X-ray Telescope (HXT) systems. The result was significant mass savings that permit the entire facility to fit one single lighter-weight launch vehicle (the Atlas V). In this way, Constellation-X has been able to protect the science performance of the mission while significantly lowering the mission's cost.

2000-2004 2005 2006
Artist's conception of the 4-spacecraft configuration for Constellation-X arrow Artist's conception for the single-spacecraft, Delta IV H configuration for Constellation-X arrow Artist's conception for the single-spacecraft, Atlas V configuration for Constellation-X
Two Atlas V 551
Delta IV H
Atlas V 551
The Constellation-X design has evolved as pre-phase A mission studies have matured and in response to increased costs in the launcher market, while at the same time maintaining the core science capabilities.


Web Curator: Barbara Mattson
NASA Official: Dr. Ann Hornschemeier
Last Updated: May 14, 2008