TPF-C Technology Plan - Exoplanet Exploration Program - NASA

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Chapter 7 7.4.8 Scatterometer Scope The scatterometer provides checks on how the physics of scatter and contamination effects are handled in various engineering codes, judges impacts on the project and informs the selection of a code for use during baffle design. Scatterometer capabilities allow surface testing to levels comparable to the TDM tests across the relevant range of spatial frequencies. Initially precision optics will be tested followed by baffle materials. The results will validate the models, inform baffle design, and refine the error budget. The schedule for the scatterometer work is given in Table 7-9. State of the Art TRL 3 The scatterometer testbed at GSFC has measured near-angle scatter to ~
Plan for Technology Development 7.4.9 Small Precision Optics Scope The key issues for masks are surface roughness, transmitted wavefront, and material homogeneity. We will fabricate and test substrates that meet the mask PSD requirements with emphasis on 15-100 micron spatial scales. For the cube beamsplitters, stress birefringence is identified as the primary limiting factor. Two approaches will be explored: redesign to eliminate cube beamsplitters and work with manufacturers to develop techniques and materials for ultralow-stress birefringence. For the remaining small optics, we will work with manufacturers to obtain 1 nm surface flatness on mounted optics. The small precision optics have achieved TRL 3.Their schedule is given in Table 7-10. Table 7-10. Small Precision Optics Schedule Planned Completion Date Planned Activities Performance Targets TRL Pre-Phase A Work with manufacturers to define specifications Set of specifications manufacturers are willing to attempt Phase A Build components Substrate meets mask PSD requirements, 1 nm surface flatness for 10-20 cm reflective optics 3 4 119
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JPL Publication 05-8 Technology Pla
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TECHNOLOGY PLAN TERRESTRIAL PLANET
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Recent Highlights Technical progres
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Figure i-4. Deformable mirror deliv
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Table of Contents Approvals........
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7.5.2 Precision Hexapod............
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Chapter 1 Figure 1-1. Artist's impr
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Chapter 1 interferometry, continues
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Chapter 1 Back end coronagraph opti
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Chapter 1 Surrounding the whole tel
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Chapter 1 Pol. BS fold/steering Mic
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Chapter 1 1.6.5 Sunshield The teles
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Chapter 1 expected architecture dow
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Chapter 1 Table 1-3. TPF-C Technolo
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Chapter 1 3B: Demonstrate, using th
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Chapter 2 2 Error Budgets 2.1 Contr
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Chapter 2 Error Budget Validation G
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Chapter 2 Further, it is shown that
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Chapter 2 Table 2-1. Requirement on
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Chapter 3 3 Optics and Starlight Su
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Chapter 3 are in progress with cont
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Chapter 3 Figure 3-5. Coronagraph s
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Chapter 3 (though not light-weight
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Chapter 3 Table 3-3. ITT Metrology
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Chapter 3 observations. The time it
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Chapter 3 vacuum-compatible, low-po
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Chapter 3 blank size. Westerhoff et
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Chapter 3 configurations, performan
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Chapter 3 Figure 3-10: Plots showin
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Chapter 3 The wavefront quality of
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Chapter 3 Figure 3-13. Optical layo
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Chapter 3 algorithms have limitatio
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Chapter 3 simulated star source is
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Chapter 4 Figure 4-1. Overview of t
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Chapter 4 enclosures, and stable la
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Chapter 4 facilities from which dat
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Chapter 4 Figure 4-5. Microslip Tri
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Chapter 4 Figure 4-7. Calibration o
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Chapter 4 Figure 4-8. Comparison of
Page 80 and 81: Chapter 4 4.2 Subsystem and System
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Page 84 and 85: Chapter 4 Figure 4-12. Fine guiding
Page 86 and 87: Chapter 4 (5) The Fine Steering Mir
Page 88 and 89: Chapter 4 Third, precise thermal co
Page 90 and 91: Chapter 4 giving confidence that fl
Page 92 and 93: Chapter 4 surface polish is nonethe
Page 94 and 95: Chapter 5 TPF-C is planning a suite
Page 96 and 97: Chapter 5 engineering judgment (i.e
Page 98 and 99: Chapter 5 categories, in reality ea
Page 100 and 101: Chapter 5 Table 5-3. Validation of
Page 102 and 103: Chapter 5 5.6.1 Modeling Methodolog
Page 104 and 105: Chapter 5 strength of computer simu
Page 106 and 107: Chapter 6 6 Instrument Technology a
Page 108 and 109: Chapter 6 Figure 6-1. Detailed conc
Page 110 and 111: Chapter 6 The first method is self-
Page 112 and 113: Chapter 6 super computers and is us
Page 114 and 115: Chapter 7 7 Plan for Technology Dev
Page 116 and 117: Chapter 7 Figure 7-1. TPF-C Technol
Page 118 and 119: Chapter 7 Improvements to the DM ov
Page 120 and 121: Chapter 7 7.3 Error Budgets 7.3.1 D
Page 122 and 123: Chapter 7 7.4 Optics and Starlight
Page 124 and 125: Chapter 7 7.4.2 Apodizing Masks and
Page 126 and 127: Chapter 7 7.4.4 Wavefront Sensing a
Page 128 and 129: Chapter 7 7.4.6 Transmissive Optics
Page 132 and 133: Chapter 7 7.5 Structural, Thermal,
Page 134 and 135: Chapter 7 7.5.3 Precision Structura
Page 136 and 137: Chapter 7 model of TPF-C and should
Page 138 and 139: Chapter 7 7.5.6 Secondary Mirror To
Page 140 and 141: Chapter 7 7.5.8 Sub-scale EM Sunshi
Page 142 and 143: Chapter 7 7.6 Integrated Modeling a
Page 144 and 145: Chapter 7 7.7.3 Advanced Concepts:
Page 146 and 147: Chapter 8 134
Page 148 and 149: Appendices Appendix B: TPF-C Detail
Page 150 and 151: Appendices Appendix D: TPF-C Techno
Page 152 and 153: Appendices Appendix F: Acronym List
Page 154: Appendices RWA SAO SBIR SIM SM SMFA
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TPF-C Technology Plan - Exoplanet Exploration Program - NASA

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