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SpaceDev Starsys Division Tests System For General Dynamics Advanced Information Systems

The GeoEye-1 satellite
by Staff Writers
Poway CA (SPX) Feb 14, 2007
SpaceDev has announced that its subsidiary, Starsys, has successfully tested the low disturbance actuation system for the ground link antenna pointing gimbal for the GeoEye-1 satellite, currently being built by General Dynamics Advanced Information Systems. Validation of this technology is a significant milestone in the $2.0 million contract for the design, development and qualification of the gimbal and control electronics.

The GeoEye-1 program is GeoEye's next-generation, high-resolution commercial remote-sensing satellite scheduled for launch in early 2007.

"The completion of the disturbance torque testing marks a significant milestone in the design qualification of the gimbal and control electronics," said Mark N. Sirangelo, SpaceDev Chairman and CEO. "Our Quiet Array Drive technology is enabling for spacecraft that require low disturbance torque actuation without the cost and complexity of brushless motor systems. This technology is mission-critical to our customer, General Dynamics, and we are committed to meeting their requirements and supporting a successful mission."

The Starsys antenna pointing gimbal is a unique design that greatly reduces motion imparted to the GeoEye-1 spacecraft to allow pictures to be taken while data is simultaneously transmitted to earth ground stations. Starsys' low disturbance torque technology has proven enabling to missions where the level of spacecraft jitter directly influences the quality of imagery or science of spacecraft payload instruments.

Starsys has successfully applied this technology to Solar array drive systems and antenna pointing systems as an alternative to conventional closed looped brushless DC motor servo systems, which are typically much larger, more complex and more expensive to implement.

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First LISA Pathfinder Flight Unit Ready For Delivery On 8 February
Paris, France (ESA) Feb 02, 2007
The first flight units for the LISA Pathfinder program are imminently nearing completion. All three Digital Sun Sensor's (DSS) have now completed manufacture and are currently undergoing final testing at supplier Galileo Avionica. A significant target has been achieved with the first flight unit having successfully completed all environmental testing. Its final testing is due to complete on 2 February with the unit scheduled to be ready for delivery on 8 February.







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