Key Sensor for NGC NPOESS Program Passes Critical Structural Test

ITT-Built Cross-Track Infrared Sounder Making Good Progress in Integration and Test

(Redondo Beach, Calif., September 6, 2007) -- A key sensor being built for the National Polar-orbiting Operational Environmental Satellite System (NPOESS) passed a critical test last month. Northrop Grumman Corporation (NYSE:NOC) is the prime contractor for NPOESS; ITT Corporation (NYSE:ITT) is the subcontractor responsible for developing the sensor.

The Cross-Track Infrared Sounder (CrIS), the next-generation atmospheric sounding instrument for improved weather forecasting, successfully passed a frame proof test. The metal composite structure, designed to support various sensor modules, underwent a vibration test that simulated the loads the sensor will experience during system test and launch -- without any change to mechanical or dynamic signatures.

The frame test marks the conclusion of an extended analysis and design effort undertaken since October 2006.

"The modules in this sensor have been thoroughly tested and will be ready for flight," said Frank Koester, vice president of Commercial & Space Science for ITT Space Systems Division. "The CrIS sensor and structural frame is now very robust and we're confident it will meet the mission objectives."

The next step in the sensor's development is final subsystem testing, system-level re-integration of the CrIS sensor, followed by electromagnetic interference, vibration, and thermal vacuum testing. The flight unit is scheduled to be delivered by May 2008 for integration on the NPOESS Preparatory Project (NPP) spacecraft.

"The design integrity of CrIS has been strengthened through this process," said Dave Ryan, vice president and NPOESS program director for Northrop Grumman's Space Technology sector. "As part of the operational NPOESS system, CrIS will provide more accurate, detailed atmospheric temperature and moisture observations for weather and climate applications."

Source : Northrop Grumman Corporation

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