The shuttle external tank thermal design presents many challenges in meeting the stringent requirements established by the structures, main propulsion systems, and Orbiter elements. The selected thermal protection design had to meet these requirements, and ease of application, suitability for mass production considering low weight, cost, and high reliability. This development led to a spray-on-foam (SOFI) which covers the entire tank. The need and design for a SOFI material with a dual role of cryogenic insulation and ablator, and the development of the SOFI over SLA concept for high heating areas are discussed. Further issuses of minimum surface ice/frost, no debris, and the development of the TPS spray process considering the required quality and process control are examined.


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    Title :

    Thermal design of the space shuttle external tank


    Contributors:
    Bachrtel, F. D. (author) / Vaniman, J. L. (author) / Stuckey, J. M. (author) / Gray, C. (author) / Widofsky, B. (author)


    Publication date :

    1985-01-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English




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