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Towards a Multi-Variable Parametric Cost Model for Ground and Space TelescopesParametric cost models can be used by designers and project managers to perform relative cost comparisons between major architectural cost drivers and allow high-level design trades; enable cost-benefit analysis for technology development investment; and, provide a basis for estimating total project cost between related concepts. This paper hypothesizes a single model, based on published models and engineering intuition, for both ground and space telescopes: OTA Cost approximately (X) D(exp (1.75 +/- 0.05)) lambda(exp(-0.5 +/- 0.25) T(exp -0.25) e (exp (-0.04)Y). Specific findings include: space telescopes cost 50X to 100X more ground telescopes; diameter is the most important CER; cost is reduced by approximately 50% every 20 years (presumably because of technology advance and process improvements); and, for space telescopes, cost associated with wavelength performance is balanced by cost associated with operating temperature. Finally, duplication only reduces cost for the manufacture of identical systems (i.e. multiple aperture sparse arrays or interferometers). And, while duplication does reduce the cost of manufacturing the mirrors of segmented primary mirror, this cost savings does not appear to manifest itself in the final primary mirror assembly (presumably because the structure for a segmented mirror is more complicated than for a monolithic mirror).
Document ID
20160011732
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Stahl, H. Philip (NASA Marshall Space Flight Center Huntsville, AL United States)
Henrichs, Todd (Missile Defense Agency Washington, DC, United States)
Date Acquired
October 3, 2016
Publication Date
August 28, 2016
Subject Category
Economics And Cost Analysis
Report/Patent Number
MSFC-E-DAA-TN35511
Meeting Information
Meeting: 2016 Optics + Photonics
Location: San Diego, CA
Country: United States
Start Date: August 28, 2016
End Date: September 1, 2016
Sponsors: International Society for Optical Engineering
Funding Number(s)
WBS: WBS 141108.04.02.01.18
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Space Mirror Technology

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