1
00:00:00,000 --> 00:00:02,969
[Music throughout]

2
00:00:04,070 --> 00:00:07,640
[Testing Roman: Outer Barrel Assembly]

3
00:00:10,543 --> 00:00:14,080
[Outer Barrel Assembly (OBA)
Static loads test of carbon fibere support struts with aluminum mass simulatorts that mimic other parts of the spacecraft.

4
00:00:14,080 --> 00:00:17,650
The structure is rotated and tipped differencely for each test.]

5
00:00:22,622 --> 00:00:26,192
[Spin at 3 G
Final test of the strut portion of the OBA.]

6
00:00:55,388 --> 00:00:58,958
[Removal from Centrifuge
Strain sensors and lower mass sims are removed, then the structure is detached and lifted from the test platform.]

7
00:02:07,994 --> 00:02:11,564
[Mass Sim Removal
The cone-shaped metal that simulates the OBA shell section is lifted off, leaving the interface ring and struts.]

8
00:02:23,243 --> 00:02:26,813
[OBA Shell Section Preparation
In a cleanroom, protective wrap and mass sims are added to the OBA’s other half, which will shield the mirror.]

9
00:03:25,038 --> 00:03:28,608
[Move to Centrifuge
The shell section is lowered onto wheels andpushed by hand to the centrifuge facility.]

10
00:03:45,658 --> 00:03:49,229
[OBA Struts Preparation
Legs and interface ring are prepared to connect to shell section.]

11
00:03:55,068 --> 00:03:58,638
[Shell Section Lift Preparation
A load-distribution frame is prepared and attached.]

12
00:04:07,447 --> 00:04:11,017
[Shell Section Lift
Lifted and moved to connect with support struts.]

13
00:04:24,931 --> 00:04:28,501
[Complete OBA Assembled
The two halves are reconnected for the first time since testing.]

14
00:04:51,591 --> 00:04:55,161
[Moved into Centrifuge
The OBA is pushed into centrifuge by hand  since no cranes connect the two spaces.]

15
00:05:03,770 --> 00:05:07,340
[Section Separation
The shell section, now with the interface ring attached, is removed and lifted off the struts, which are pushed out. ]

16
00:05:27,827 --> 00:05:31,397
[Shell Section Attached
The shell section is carefully bolted to the centrifuge test platform and 94 sensors are individually connected.]

17
00:05:38,271 --> 00:05:41,841
[Spin at 3.9 G
First test of the shell section with a 13.7 rpm spin.]

18
00:06:17,910 --> 00:06:21,481
[Return to Neutral
The roughly 600,000-pound centrifuge is smooth and balanced enough to push by hand.]

19
00:06:34,427 --> 00:06:37,997
[One Down, Five To Go
The shell will be rotated and tipped for the next spin ... ]

20
00:06:42,935 --> 00:06:46,506
[One Down, Five To Go
The shell will be rotated and tipped for the next spin ... ]