“Silicone impregnated refractory ceramic ablator”的意思、由来-开放百科全书

词条

Silicone impregnated refractory ceramic ablator

释义

Description
References

Silicone Impregnated Refractory Ceramic Ablator, or SIRCA, is a lightweight ceramic ablative material, often used in thermal protection systems to protect parts of launch vehicles and spacecraft from very high temperature heat sources.^[1]

SIRCA was used for ceramic substrates on both the Viking spacecraft and the Space Shuttle,^[2] and was also used on the aeroshells for Mars Pathfinder and the Mars Exploration Rovers.^[1] It was developed at NASA Ames Research Center in the 1980s and 1990s.^[2]

Description

SIRCA typically has a density between {{convert|0.20|-|0.40|g/cc|lb/ft3}} and can handle a heat flux of up to {{convert|300|W/cm2}}^[1]

and is easily machined to custom shapes.^[2]

References

1. ^¹²{{cite web |url=https://uknowledge.uky.edu/cgi/viewcontent.cgi?referer=https://duckduckgo.com/&httpsredir=1&article=1029&context=ablation |title=A Perspective on the Design and Development of the SpaceX Dragon Spacecraft Heatshield |last=Rasky|first=Daniel J. |publisher=NASA |date=2012-02-28 |accessdate=2018-03-19 }}
2. ^¹²{{cite conference |last=Sepka|first=Steven A. |last2=Samareh|first2=Jamshid A. |title=Thermal Protection System Mass Estimating Relationships for Blunt-Body, Earth Entry Spacecraft |url=https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20150018864.pdf |conference=45th AIAA Thermophysics Conference, Dallas Texas |date=26 June 2015 }}

1 : Spaceflight technologies

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