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The maximum suction value obtainable by porous-plate devices is limited to 1
bar if the soil air is kept at atmospheric pressure and the pressure difference
across the plate is controlled either by vacuum or by a hanging water column.
Propellant combustion in guns takes place at high pressures, usually within the
range from 138.0 to 552.0 MPa (20,000 to 80,000 psi), whereas pressures in
rocket motors are in the range of 3.45 to 10.34 MPa (500 to 1500 psi). Smokeless
This burning surface recedes into the solid at a uniform rate characteristic of the
particular propellant and the operating pressure (Fig. 3). The mass flow rate of
the resulting reaction products is the product of the propellant burning rate r, the ...
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Seismology Observational 17 Stochastic Description
Seismology Theoretical 47 Solar Chimneys
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