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NASA NTRS · 20070036720

TPF-I Emma X-Array: 2007 Design Team Study

Martin, Stefan R.·Rodriguez, Jose·Scharf, Dan·Smith, Jim·McKinstry, David·Wirz, Richie·Purcell, George·Wayne, Len·Scherr, Larry·Mennesson, Bertrand·Lay, Oliver
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Abstract

This viewgraph presentation is a study of an Emma design for Terrestrial Planet Finder (TPF) formation flying interferometer. The objective is to develop a design with reduced cost compared to TPF-I X-Array, derive mass and cost estimates, and study thermal and radiation issues.

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Martin, Stefan R., Rodriguez, Jose, Scharf, Dan, Smith, Jim, McKinstry, David, Wirz, Richie, Purcell, George, Wayne, Len, Scherr, Larry, Mennesson, Bertrand, Lay, Oliver. 2007-04-16. TPF-I Emma X-Array: 2007 Design Team Study. https://ntrs.nasa.gov/citations/20070036720

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NASA NTRS2008

Flight-Like Ground Demonstrations of Precision Maneuvers for Spacecraft Formations

Synchronized formation rotations are a common maneuver for planned precision formations. In such a rotation, attitudes remain synchronized with relative positions, as if the spacecraft were embedded in a virtual rigid body. Further, since synchronized rotations are needed for science data collection, this maneuver requires the highest precision control of formation positions and attitudes. A recently completed, major technology milestone for the Terrestrial Planet Finder Interferometer is the high-fidelity, ground demonstration of precision synchronized formation rotations. These demonstrations were performed in the Formation Control Testbed (FCT), which is a flight-like, multi-robot formation testbed. The FCT is briefly introduced, and then the synchronized rotation demonstration results are presented. An initial error budget consisting of formation simulations is used to show the connection between ground performance and TPF-I flight performance.

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