SHIIVER_MLI_QA2.docx

NNC16ZLT005R Multi-Layer Insulation (MLI) Blanket Questions and Answers #2

4. For the scale down of the 8.4m tank to the 4m, is it only the diameter of the tank that scales, or does the entire tank scale (i.e. the sidewalls scale as well).(section 3.2.2.4)?

The entire tank scales at the same ratio (i.e. the domes will be the same shape, not the same size).

5. For the Silicon Diodes (section 3.4 and 7.3), who is responsible for specifying which diode is used, NASA or the vendor?

NASA will specify the diode.

6. Does option 1 not require Diodes to be installed? (section 6)

No, Option 1 does not include the use of diodes within the curtain blankets.

7. Is there supposed to be a second page to the document described in 2.2? The second page is blank.

There is no missing information on the second page. The original drawing only had one page, not sure how the second page got there.

8. Can you clarify the terminology and differences between option 1 and option 2? Section 6.1.3 and section 7.2.1 seem to say the exact same thing.

The difference between Options 1 and Option 2 is as follows: For Option 1, the MLI sidewall blankets are hung like curtains from a movable rod (which NASA will define as written) within the vacuum chamber (i.e. testing can be conducted with or without these blankets). For Option 2, the MLI sidewall blankets are attached to the test tank.