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  1. #1
    waterproof*
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    fairing acoustic protection (FAP) system

    The acoustic level inside the PLF will vary slightly with
    different spacecraft. This is because the acoustic absorption of each spacecraft depends on its size, shape,
    and surface material properties. Acoustic sound pressure levels for the Atlas V 400 configuration with
    both the LPF and EPF are provided in Figure 3.2.2-1; levels for the Atlas V 500 are provided in Figure
    3.2.2-2. The acoustic environment shown is for the standard PLF with acoustic attenuation systems as
    described in Section 4.1.1.3. As a mission-unique service, additional acoustic protection can be provided
    with resulting reduction of payload envelope. Conversely, a payload that is not sensitive to acoustics may
    wish to fly without the standard acoustic protection package. The levels presented are for typical spacecraft of square cross-section with 5060% fill of the fairing by cross-sectional area. An acoustic analysis
    is required for spacecraft with other fill factors to bound the acoustic environment. The spacecraft should
    be capable of functioning properly after a 1-minute exposure to this level. For the LPF/EPF with acoustic
    panels, special consideration should be given to components located within 76 cm (30 in.) of PLF vents


    http://spacecraft.ssl.umd.edu/design...5.pl.guide.pdf
    Attached Thumbnails Attached Thumbnails fairing acoustic protection (FAP) system-atlas-launch.jpg  
    * posted by Creakybot 2013 all rights reserved.
    * not actually waterproof.

  2. #2
    waterproof*
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    In the Payload Hazardous Servicing Facility at NASA's Kennedy Space Center in Florida, the fairing acoustic protection (FAP) system lines the inside of the Atlas V payload fairing for NASA's Mars Science Laboratory (MSL) mission.

    * posted by Creakybot 2013 all rights reserved.
    * not actually waterproof.

  3. #3
    waterproof*
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    Curiosity's Rocket Fairing
    In the Payload Hazardous Servicing Facility at NASA's Kennedy Space Center in Florida, the fairing acoustic protection (FAP) system lining the inside of the Atlas V payload fairing for NASA's Mars Science Laboratory (MSL) mission comes into view as the fairing is lifted into a vertical position.

    * posted by Creakybot 2013 all rights reserved.
    * not actually waterproof.

  4. #4
    Call me a Fred
    Reputation: MikeBiker's Avatar
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    Can you hear me now?
    Mike

    -----------------------------------------------------------------------------------
    You may starch my jumper
    Hang it upside your wall
    You know by that, baby
    I need my ashes hauled.

    Sleepy John Estes

    H

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