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TPF-I SWG Report - Exoplanet Exploration Program - NASA

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F L I G H T S YSTEM C ONFIGURATION<br />

Appendix B<br />

Flight System Configuration<br />

Tables B-1 to B-5 describe the flight-system studied by the <strong>TPF</strong>-I design team in 2004. The interferometer<br />

under consideration was a four-telescope dual-Bracewell interferometer, depicted in Fig. 5-15.<br />

Table B-1. Mission Summary<br />

Parameter<br />

Preliminary Requirements<br />

Number of collector spacecraft 4<br />

Number of combiner spacecraft 1<br />

Design life<br />

5 years<br />

Mission orbit<br />

L2 Halo<br />

ΔV (TCMs and L2 injection)<br />

105 m/s<br />

Launch vehicle<br />

Delta 4050H<br />

Lift mass<br />

9408 kg<br />

Margin 30%<br />

Table B-2. Design Team Power Allocations<br />

DC Power Collector Combiner<br />

Payload 75 W 475 W<br />

Downlink 58 W 78 W<br />

Housekeeping 537 W 557 W<br />

Reserve 192 W 335 W<br />

Total 862 W 1445 W<br />

171

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