TPF-C Technology Plan - Exoplanet Exploration Program - NASA

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7.5.2 Precision Hexapod....................................................................................................121 7.5.3 Precision Structural Stability Characterization.........................................................122 7.5.4 Vibration Isolation Testbed ......................................................................................123 7.5.5 Closed-loop Secondary Mirror Position Control......................................................125 7.5.6 Secondary Mirror Tower Partial Structure Testbed..................................................126 7.5.7 Pointing Control Testbed..........................................................................................127 7.5.8 Sub-scale EM Sunshield and Isothermal Enclosure .................................................128 7.5.9 Sub-scale EM Primary Mirror Assembly .................................................................129 7.6 Integrated Modeling and Model Validation.....................................................................130 7.6.1 Integrated Modeling Tools .......................................................................................130 7.7 Instrument Technology and Advanced Concepts ............................................................131 7.7.1 Instrument Technology.............................................................................................131 7.7.2 Advanced Concepts: Visible Nuller Testbed............................................................131 7.7.3 Advanced Concepts: Phase-Induced Amplitude Apodization..................................132 8 TPF-C Pre-Phase A Project Schedule............................................................133 Appendix A: TPF-C Project Organization........................................................135 Appendix B: TPF-C Detailed Milestone Schedule............................................136 Appendix C: TPF-C Science and Technology Definition Team......................137 Appendix D: TPF-C Technology Advisory Committee ...................................138 Appendix E: Technology Readiness...................................................................139 Appendix F: Acronym List .................................................................................140 This is not part of the above table This is another line xii
Introduction 1 Introduction 1.1 Purpose and Scope The Terrestrial Planet Finder (TPF) is a suite of two complementary space observatories: a visible-light coronagraph and a mid-infrared formation-flying interferometer (depicted in Figure 1-1). The combination of these two missions, observing over a wide wavelength range, will provide definitive characterization of extra-solar planets and planetary systems and yield a reliable and robust assessment of habitability and the presence of signatures of life. The primary purpose of this document is to detail the technology development activities for the Terrestrial Planet Finder Coronagraph (TPF-C) that will take place in pre-Phase A, leading up to the Mission Concept Review planned toward the end of FY2006. The focus of the technology plan is therefore to lay out the scope, depth, and inter-relatedness of activities that will enable TPF-C to achieve its technology milestones, supporting its entry to Phase A. The TPF-C technology plan nonetheless takes a longer perspective and outlines the approach to technology verification that will lead the project through Phase A and onward to Phase C/D. TPF-C will be a technologically demanding mission. The size of the observatory, its complexity, system tolerances, and sensitivity to environmental conditions are such that it may never be possible to undertake a full end-to-end test of the observatory prior to launch. Much of this technology plan is therefore devoted to describing the approach to verification and validation of the expected performance of TPF-C. This document is intended to be very specific concerning plans for the immediate future up until the end of pre-Phase A and somewhat detailed for plans in Phase A, but to provide only a broad outline of the approach that will be undertaken towards the latter phases of development leading up to launch. Whereas detailed budget information is considered in planning of pre-Phase A activities, no attempt is made to incorporate comprehensive budget information for subsequent Phases. Within these pages are documented the critical component, subsystem, and system technologies and a schedule of development that includes the progression of NASA Technology Readiness Levels (TRLs). Error budgets are also presented that justify the current technology goals, with the understanding that these error budgets are subject to revision as the technology matures. 1
Page 1 and 2: JPL Publication 05-8 Technology Pla
Page 3: TECHNOLOGY PLAN TERRESTRIAL PLANET
Page 6 and 7: Recent Highlights Technical progres
Page 8 and 9: Figure i-4. Deformable mirror deliv
Page 10 and 11: Table of Contents Approvals........
Page 14 and 15: Chapter 1 Figure 1-1. Artist's impr
Page 16 and 17: Chapter 1 interferometry, continues
Page 18 and 19: Chapter 1 Back end coronagraph opti
Page 20 and 21: Chapter 1 Surrounding the whole tel
Page 22 and 23: Chapter 1 Pol. BS fold/steering Mic
Page 24 and 25: Chapter 1 1.6.5 Sunshield The teles
Page 26 and 27: Chapter 1 expected architecture dow
Page 28 and 29: Chapter 1 Table 1-3. TPF-C Technolo
Page 30 and 31: Chapter 1 3B: Demonstrate, using th
Page 32 and 33: Chapter 2 2 Error Budgets 2.1 Contr
Page 34 and 35: Chapter 2 Error Budget Validation G
Page 36 and 37: Chapter 2 Further, it is shown that
Page 38 and 39: Chapter 2 Table 2-1. Requirement on
Page 40 and 41: Chapter 3 3 Optics and Starlight Su
Page 42 and 43: Chapter 3 are in progress with cont
Page 44 and 45: Chapter 3 Figure 3-5. Coronagraph s
Page 46 and 47: Chapter 3 (though not light-weight
Page 48 and 49: Chapter 3 Table 3-3. ITT Metrology
Page 50 and 51: Chapter 3 observations. The time it
Page 52 and 53: Chapter 3 vacuum-compatible, low-po
Page 54 and 55: Chapter 3 blank size. Westerhoff et
Page 56 and 57: Chapter 3 configurations, performan
Page 58 and 59: Chapter 3 Figure 3-10: Plots showin
Page 60 and 61: 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
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Chapter 4 4.2 Subsystem and System
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Chapter 4 Figure 4-11. Schematic of
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Chapter 4 Figure 4-12. Fine guiding
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Chapter 4 (5) The Fine Steering Mir
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Chapter 4 Third, precise thermal co
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Chapter 4 giving confidence that fl
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Chapter 4 surface polish is nonethe
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Chapter 5 TPF-C is planning a suite
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Chapter 5 engineering judgment (i.e
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Chapter 5 categories, in reality ea
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Chapter 5 Table 5-3. Validation of
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Chapter 5 5.6.1 Modeling Methodolog
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Chapter 5 strength of computer simu
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Chapter 6 6 Instrument Technology a
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Chapter 6 Figure 6-1. Detailed conc
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Chapter 6 The first method is self-
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Chapter 6 super computers and is us
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Chapter 7 7 Plan for Technology Dev
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Chapter 7 Figure 7-1. TPF-C Technol
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Chapter 7 Improvements to the DM ov
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Chapter 7 7.3 Error Budgets 7.3.1 D
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Chapter 7 7.4 Optics and Starlight
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Chapter 7 7.4.2 Apodizing Masks and
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Chapter 7 7.4.4 Wavefront Sensing a
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Chapter 7 7.4.6 Transmissive Optics
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Chapter 7 7.4.8 Scatterometer Scope
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Chapter 7 7.5 Structural, Thermal,
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Chapter 7 7.5.3 Precision Structura
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Chapter 7 model of TPF-C and should
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Chapter 7 7.5.6 Secondary Mirror To
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Chapter 7 7.5.8 Sub-scale EM Sunshi
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Chapter 7 7.6 Integrated Modeling a
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Chapter 7 7.7.3 Advanced Concepts:
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Chapter 8 134
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Appendices Appendix B: TPF-C Detail
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Appendices Appendix D: TPF-C Techno
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Appendices Appendix F: Acronym List
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Appendices RWA SAO SBIR SIM SM SMFA
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TPF-C Technology Plan - Exoplanet Exploration Program - NASA

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