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Comparison of reusable insulation systems for cryogenically-tanked earth-based space vehiclesThree reusable insulation systems concepts were developed for use with cryogenic tanks of earth-based space vehicles. Two concepts utilized double-goldized Kapton (DGK) or double-aluminized Mylar (DAM) multilayer insulation (MLI), while the third utilized a hollow-glass-microsphere, loadbearing insulation (LBI). Thermal performance measurements were made under space-hold (vacuum) conditions for insulating warm boundary temperatures of approximately 291 K. The resulting effective thermal conductivity was approximately 0.00008 W/m-K (W = weight,Kg; m = measured; K = temperature) for the MLI systems (liquid hydrogen test results) and 0.00054 W/m-K for the LBI system (liquid nitrogen test results corrected to liquid hydrogen temperature).
Document ID
19780013247
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Sumner, I. E.
(NASA Lewis Research Center Cleveland, OH, United States)
Barber, J. R.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
January 1, 1978
Subject Category
Launch Vehicles And Space Vehicles
Report/Patent Number
E-9192
NASA-TM-73668
Meeting Information
Meeting: Thermophys. and Heat Transfer Conf.
Location: Palo Alto, CA
Country: United States
Start Date: May 24, 1978
End Date: May 26, 1978
Sponsors: ASME, AIAA
Accession Number
78N21190
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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