A launcher launch assembly must include initial design constraints which optimize the performance and the availability of the launcher. In particular, the limitation of acoustic charges applied to useful charges as well as the need to include phenomena such as blast wave related to the use of large powder booster can lead to covering the flue and to water or 'flood' injections. On the other hand, the mechanical holding of the launcher at the time of different phases of its development depends on the wind and its interaction with the ground installations, which can lead to the use of specific materials like the 'wind damper'. To improve the availability, its seems useful to be able to make short term predictions of the atmosphere traversed by the launcher which will necessitate particular meteorological measurements. All this supposes major test items (reduced scale models, wind tunnel), sophisticated and costly calculation means (vibroacoustic models) a specific instrumentation of a certain number of launcher samples, and the launching assembly itself. All of these means were, and to a wide extent are still, developed to improve the performances of the Ariane 4 launcher and to define the characteristics of the Ariane 5 launcher and its launching assembly.


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    Title :

    Impacts des Lanceurs sur les Installations de Lancement Ariane 4 - Ariane 5 (Impacts of the Launchers on the Ariane 4-Ariane 5 Launching Installations)


    Contributors:
    H. Brion (author) / S. Magen (author)

    Publication date :

    1991


    Size :

    8 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English