Value chain · CLM-0983
In plain terms
Rockwell's crew is around nine hundred because it runs three shifts round the clock with a fourth crew resting, and at any moment fewer than ninety of the two hundred-odd on shift are actually building the frame. The machine speed was assumed, not measured, and forty per cent was added for joints and downtime.
The claim as recorded
Rockwell's 1981 operations analysis allocates a 90-day build for a dual satellite from an assumed beam machine rate of 1 m/min plus a 40 per cent factor itemised as 20 per cent for joints (not less than 8 hours), 10 per cent for machine downtime and servicing and 10 per cent for reflector operations, and sizes the crew at 226 per shift on three 8-hour shifts a day with four shift crews on a 6-on 4-off cycle - 904 on board, of whom 88 per shift are on structures and reflectors.
Evidence behind this: T3-contractor final report; the crew table is the source's own "top level evaluation".
Scope and limits
A DUAL SATELLITE, 125 OF WHICH EQUAL 60 COPLANAR 5 GW UNITS - NOT THE 1978 REFERENCE SATELLITE. The source calls its crew "a top level evaluation". The text layer shows the table's blank cells as "~".
What it assumes
No assumptions are recorded against this claim.
Where it comes from
2-30, normalised: "A timeline reflecting 4 satellites per year, or a nominal 90 days per satellite is shown in Table 2.2-3. In allocating time for the various operations, a beam machine rate of 1 meter/minute was assumed. Additionally, a 40% factor was added; 20% for joints, but not less than 8 hours, 10% for machine downtime and servicing, and 10% for reflector operations." Table 2.2-4 from the render, days 0-59 / 59-73 / 73-90: structures and reflectors 88 / 40 / -; antenna RF assembly and installation - / 48 / -; construction support 40 / 40 / 50; maintenance 44 / 44 / 56; base management 24 / 24 / 24; crew support 30 / 30 / 30; checkout - / - / 40; total shift crew 226 / 226 / 200; total crew (4 shifts) 904 / 904 / 800; "BASED ON 8 HR SHIFTS, 3 SHIFTS/DAY, 8 DAY WORK CYCLE (6 ON, 4 OFF), AND 4 SHIFT CREWS".
Basis: beam machine rate in m/min; overhead percentages; crew per shift and on board
Related records
- Answers question
- QST-015 not published in this release
Cite this
energyaperture.com/c/clm-0983
CLM-0983, Energy Aperture, as of 1981.