Value chain · CLM-0343
In plain terms
A 2010 NASA paper argues that building a solar power satellite in space is not just a robot problem: the module design, the assembly steps, and the supporting equipment all have to be developed together. It suggests starting with a much smaller test system first.
The claim as recorded
A 2010 NASA Langley paper frames in-space modular assembly of an SPS as requiring four elements to be solved together: the mission-level modular system and its module specifications; the assembling/servicing agents (robots or astronauts); the assembly, servicing and repair operations (positioning, aligning, joining); and supporting infrastructure (cranes, mobile platforms); it illustrates the approach with a much smaller, 450 kW-class modular "Solar Electric Transfer Vehicle" (SETV) concept built from eight 50 kW-class modules, proposed as a technology stepping-stone rather than a demonstrated SPS-scale assembly capability.
Scope and limits
A programmatic/organisational framework plus a small precursor-vehicle concept, not a demonstrated in-space assembly of any SPS-scale hardware. No robot count, assembly rate, or tolerance figure specific to SPS-scale assembly is given. THE TWO POWER FIGURES ARE NOMINAL CLASS LABELS AND ARE NOT MEANT TO MULTIPLY. Eight 50 kW-class modules make a 450 kW-class vehicle, not a 400 kW one, because "-class" in the source denotes a size band rather than a rating. This record read 450 kW and 50 kW without "-class" until 2026-09-13, which made the source appear to contain an arithmetic error it does not contain.
What it assumes
The SETV reference concept (450 kW, 8 modules) is treated by the source as a plausible "first phase" demonstrator, not a validated design.
Where it comes from
(Belvin, Dorsey and Watson, 2010), p.6-7: "The complete and comprehensive modular assembly system-of-systems encompass all of the following: 1. the mission-level system that utilizes the modules... 2. the agents that assemble, service and repair the modular subsystems (robots or astronauts); 3. the operations... (positioning, aligning, joining), servicing and repair; and 4. the infrastructure (cranes and mobile platforms)..." p.5: "The reference 450 KW-class SETV is composed of eight of these SETV System Modules."
Related records
- Answers question
- QST-002 not published in this release
Cite this
energyaperture.com/c/clm-0343
CLM-0343, Energy Aperture, as of 2010.
Connected records
Other published records linked to this one. A list, not a judgement.
- Also from SRC-041
- CLM-0333In one 1978 design, structure and mechanisms made up about 18% of the satellite's dry mass; a 2010 paper gives about 20% as a general rule...CLM-0336Different design studies over four decades have each simply assumed a different working lifetime for a solar power satellite, from about 15...