TPF-C Technology Plan - Exoplanet Exploration Program - NASA
TPF-C Technology Plan - Exoplanet Exploration Program - NASA
TPF-C Technology Plan - Exoplanet Exploration Program - NASA
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<strong>Plan</strong> for <strong>Technology</strong> Development<br />
7.4.5 Deformable Mirrors<br />
Scope<br />
The objective is to develop DMs that are reliable and robust to support the <strong>TPF</strong>-C/High Contrast<br />
Imaging Testbed with the goal of demonstrating contrast performance of 1 × 10 -10 or better at<br />
angular separations of 4 λ/D or greater from the central point source by May 2006. The scope of<br />
work for Xinetics is to demonstrate robust performance in all fundamental elements of the<br />
modular deformable mirror process for <strong>TPF</strong>/Coronagraph Science.<br />
The products to be developed are 32 × 32, 48 × 48, 64 × 64, and 96 × 96 deformable mirrors<br />
leading toward technical hardware that are reliable, large enough and robust to support flight<br />
performance levels required by September 2008. Module development and combinations will<br />
enable best understanding of last path for flight hardware development.<br />
The schedule for the deformable mirror work is given in Table 7-6.<br />
State of the Art TRL 4<br />
Xinetics has delivered five 32 × 32 actuator DMs and two of four 64 × 64 actuator DM. The 32<br />
× 32 DMs have been used in HCIT to achieve suppression approaching 10 -9 with speckle nulling.<br />
See Figure 3-11 in Section 3.2.1 for recent HCIT experimental results.<br />
Work is currently progressing on the 48 × 48 DM 2,304-channel single module manufacturing<br />
pathfinders; this work includes module development, actuator machining and delineation<br />
pathfinder, interconnect evolution pathfinders, and facesheet development.<br />
Table 7-6. Deformable Mirror Schedule<br />
<strong>Plan</strong>ned<br />
Completion<br />
Date<br />
<strong>Plan</strong>ned Activities Performance Targets TRL<br />
Pre-Phase A Manufacture of 64 × 64 and 48<br />
× 48 DMs<br />
Phase A<br />
Manufacture of 96 × 96 DMs:<br />
3 × 3 format of 32 × 32 and 2 ×<br />
2 format of 48 × 48<br />
Contrast performance of 1 × 10 -10 or better at angular<br />
separations of 4 λ/D in the HCIT<br />
Contrast performance of 1 × 10 -10 or better at angular<br />
separations of 4 λ/D in the HCIT<br />
4<br />
5<br />
115