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  • MNGN 444 Blast Overpressure and Positive Pulse Duration Curves

    Reference: P.Cooper, Explosives Engineering, Chapter 28, 1996.

  • MNGN 444 Height of Burst Curves

    Reference: M.Mellor, Explosions and Snow, Cold Regions Science and Engineering, Part III, Section 3A, 1965.

  • MNGN 444 Equations I

    Reference: G.F. Kinney, K.J.Graham, Explosive Shocks in Air, Second Edition, 1985.

    Shock Velocity:

    = +

    Mach number:

    =

    Blast Overpressure:

    =(

    )

    Angle of incidence:

    =.

    ( )+

    Mach stem number:

    =

    Ca is speed of sound in air (sea level)

    Pa is atmospheric pressure (sea level)

    Subscript x means general (Incident/Mach Stem).

  • MNGN 444 Equations II

    Reference: P.Cooper, Explosives Engineering, Chapter 27, 1996.

    Gurney Equation:

    = (

    +

    )

    /

    M: mass of metal cylinder (kg) C: mass of explosive (kg) 2E: Gurney constant (m/s)

    Mott Equation:

    = [ (

    )]

    Mo: mass of metal cylinder (lb) Mk: distribution factor

    = 5/3 1/3 (1 +

    )

    B: Mott coeficient for given explosive-metal pair T: wall thickness (in) D: inside diameter of metal cylinder (in)

    Fragment Size:

  • Drag Attenuation Equation:

    = (

    )

    or

    =

    (

    )

    A: fragment area (m2) Wf: fragment mass (kg) 0: specific weight of air (kg/m3) CD: Drag coefficient (0.6)

  • MNGN 444 Blast Damage Curves

    Reference: P.Cooper, Explosives Engineering, Chapter 28, 1996.

    Lung Damage:

    Ear Damage:

  • Secondary Blast Damage:

    Tertiary Blast Damage:

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