Accession Number : AD0429731


Title :   PYROLYTIC GRAPHITE - A STATUS REPORT


Corporate Author : GENERAL ELECTRIC CO PHILADELPHIA PA MISSILE AND SPACE DIV


Personal Author(s) : Garber, A M ; Nolan, E J ; Scala, S M


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/429731.pdf


Report Date : Oct 1963


Pagination or Media Count : 65


Abstract : It is the purpose of this paper to review the recent history of the development of pyrolytic graphite and its thermal, aerothermochemical, and structural properties with regard to its application to hypersonic vehicles. Pyrolytic graphite is not really new since its discovery dates back to Thomas Edison, however, this class of refractory materials has been rediscovered recently because it possesses certain desirable properties at extremely high operating temperatures, including a high strength to weight ratio, low oxidation rate, and a low transverse coefficient of thermal conductivity. Consequently, a thorough investigation of the properties of pyrolytic graphite is being carried out. In addition, theoretical models are being developed so that its aerothermochemical and aerothermostructural behavior can be predicted with confidence for arbitrary hypersonic missions.


Descriptors :   *PYROLYTIC GRAPHITE , *REFRACTORY MATERIALS , ANISOTROPY , CRYSTAL STRUCTURE , ELASTIC PROPERTIES , MICROSTRUCTURE , OXIDATION , PREPARATION , REACTION KINETICS , SHELLS(STRUCTURAL FORMS) , SPECIFIC HEAT , TENSILE PROPERTIES , THERMAL CONDUCTIVITY , THERMAL EXPANSION , THERMAL STRESSES


Subject Categories : Ceramics, Refractories and Glass


Distribution Statement : APPROVED FOR PUBLIC RELEASE