As the space program transitions to longer duration manned missions, the need to provide a quieter environment assumes increased importance. Fans are a significant noise source and require special acoustic attention. Effective optimization of a quiet fan package involves trade-offs between fan source noise and muffler design. This paper addresses the impact of fan speed on source noise acoustic profile, power and volume. It further addresses muffler characteristics to be included in the trade study and resulting design. For the ISS Avionics Air Assembly, this trade-off resulted in a 50,000 rpm air bearing fan design. This paper addresses the acoustic source noise of both a 30 cfm design and a 130 cfm design. The cooling packages containing these fans meet NC-40 and NC-45 respectively.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Space Vehicle Fan Package Acoustic Characteristics


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Conference on Environmental Systems ; 1995



    Publication date :

    1995-07-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Space Vehicle Fan Package Acoustic Characteristics

    O'Connor, E. W. / SAE | British Library Conference Proceedings | 1995


    Development of a luxury vehicle acoustic package using SEA full vehicle model

    Huang,L.M. / Krishnan,R. / Connelly,T. et al. | Automotive engineering | 2003


    Development of a Luxury Vehicle Acoustic Package using SEA Full Vehicle Model

    Knittel, James D. / Huang, Liangyu (Mike) / Krishnan, Ramkumar et al. | SAE Technical Papers | 2003


    Development of a Luxury Vehicle Acoustic Package using SEA Full Vehicle Model

    Huang, L. / Krishnan, R. / Connelly, T. et al. | British Library Conference Proceedings | 2003


    Acoustic Package Development and Target Setting of an Autonomous Vehicle

    Galante, Mariano / Lafont, Thibault / Ronzio, Francesca et al. | Springer Verlag | 2023