TPF-C Technology Plan - Exoplanet Exploration Program - NASA

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Chapter 1 Table 1-3. TPF-C Technology and Engineering Risks Optics and Starlight Suppression Technology TPF-C Preliminary Error Budget Allocations Development Task Where Addressed Page Refs Technology Risks Broadband mask physics Masks consistent with 10 -10 contrast requirement Amplitude and phase wavefront control Demonstrate sensing and control to 10 -5 wave in mid-spatial frequencies in a flight-like system Apodizing Masks and Stops High Contrast Imaging Testbed High Contrast Imaging Testbed Wavefront Sensing and Control Deformable Mirror Planet Detection Simulator Optical coating performance and 10 -3 reflectivity uniformity Coatings 42 117 characterization Technology Demonstration Mirror 33 113 Straylight 10 -11 background Scatterometer 45 118 Transmissive Optics Engineering Risks Large primary mirror fabrication Sub-Angstrom wavelength transmission uniformity
Introduction estimates. At this time a full test at flight levels of the instrument assembly, consisting of the starlight suppression system, is planned. A full test of the optical telescope assembly (OTA) is planned and the nature of this test is being evaluated. A programmatic end-to-end performance gate will be defined as part of the I&T plan. In order to respond to changing priorities, this Technology Plan will be updated yearly with the first update to occur in March of 2006. Modifications to this document may result from a combination of factors: shifting instrument error allocations, changing risk prioritization, shifting budget priorities, and the challenge of performing state-of-the-art technical work on a tight schedule. Approvals for revised versions of the Plan will be obtained prior to issuance. 1.10 TPF-C High-level Technology Milestones Three significant technology milestones have been set to gauge the developmental progress of the project and have been imposed as a requirement for the project to proceed from pre-Phase A to Phase A. Completion of the milestones is documented by the project, reviewed by the TPF- TAC and HQ, and approved by HQ. Listed below, these pre-Phase A milestones focus on demonstrating the critical technologies and the feasibility of the mission. The critical technologies for TPF-C have been identified as starlight suppression in both narrow and broad bands. Milestone #1: Starlight Suppression Demonstrate that the High Contrast Imaging Testbed (HCIT) is capable of achieving a baseline contrast of 1 × 10 -9 (goal 1 × 10 -10 ) at a 4 λ/D inner working angle, at λ=785 nm, and stable for at least one hour. Planned Completion Date: Q3 FY05 Milestone #2: Broadband Starlight Suppression Demonstrate that the HCIT is capable of achieving a baseline contrast of 1 × 10 -9 (goal 1 × 10 -10 ) at a 4 λ/D inner working angle over a 60-nm bandpass (goal 100 nm) with the center wavelength in the range of 0.5 µm to 0.8 µm. Planned Completion Date: Q3 FY06 Milestone #3: Model Validation and Performance Feasibility 3A: Demonstrate that starlight suppression performance predictions from high-fidelity optical models of the HCIT, utilizing measured data on specific testbed components, are consistent with actual measured results on the testbed. Correlation of model predictions with experimental testbed results validates models at a baseline contrast ratio of better than 1 × 10 -9 (goal 1 × 10 -10 ) over a 60-nm bandwidth. Planned Completion Date: Q4 FY06 17
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 12 and 13: 7.5.2 Precision Hexapod............
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 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
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Page 54 and 55: Chapter 3 blank size. Westerhoff et
Page 56 and 57: Chapter 3 configurations, performan
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Page 60 and 61: Chapter 3 The wavefront quality of
Page 62 and 63: Chapter 3 Figure 3-13. Optical layo
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Page 66 and 67: Chapter 3 simulated star source is
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Page 70 and 71: Chapter 4 enclosures, and stable la
Page 72 and 73: Chapter 4 facilities from which dat
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Page 76 and 77: 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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