Universal Upper Stage "Fregat"

    • Universal Upper Stage "Fregat"

    Purpose:
    Design and manufacture of upper stage for use as the 3rd stage of the launch vehicle and launch vehicles loading into various satellites orbits.
    Flight qualification of the product: Yes
    Brief history of flight qualification:
    Upper stage "Fregat", upper stage "Fregat-MT", upper stage "Fregat - SB".
    Possibility to adapt the product to customer requirements: Yes
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    Parameter Value
    Initial mass with maximum dressing, kg 6235/7640/11680
    Final weight, kg 945/1035/1080
    Dimensions: height / diameter mm 1875/3440 1945/3800 2435/3875
    Fuel components: oxidizer / fuel AT / UDMH
    Maximum working fuel reserve / full refueling, kg 5235/5307 6550/6650 10140/10330
    MDU thrust: BT / MT mode, kgf 2030±100/1420±150 2030±100/1420±150 2030±100/1420±150
    Specific impulse: BT / MT mode, s 333,2/320
    Maximum numberMD inclusions 7

    Description

    In accordance with the specification of the customer. On the basis of the basic upper stage "Fregat" a number of highly efficient booster blocks have been created.

    Remark

    The use of additional fuel tanks and a dropable block of tanks (upper stage "Fregat-MT" and upper stage "Fregat-SB") at upper stage "Fregat" allowed to significantly increase the mass of refueling and, thereby, increase the efficiency of the upper stage.

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