Results 121 to 130 of about 2,457 (166)

Universal behaviour in erosive burning of solid propellants

Combustion and Flame, 1997
This paper considers the extensive data and correlations on the erosive burning of solid propellants. A relatively simple nondimensional relationship between the ratio of the actual to nonerosive burn rate (eta) and a quantity g, which is the product of g(0)-the ratio of free stream mass flux to the mass flux from the surface for nonerosive condition ...
Mukunda, HS, Paul, PJ
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Erosive burning of composite solid propellants

Combustion and Flame, 1966
A model is proposed for erosive burning of ammonium perchlorate composite wolid propellants. It is assumed that combustion takes place in the turbulent boundary layer and that the turbulent flame consists of distorted ‘flamelets’ but otherwise retains on a molecular scale the characteristics of a laminar flame.
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[Treatment of chemical burns and erosions ].

Klinische Monatsblatter fur Augenheilkunde, 1982
Experimental and clinical observations suggested that after alkali burns of the eyes, neutralization of the tissues and the aqueous humor occurred with in hours. The further course of the disease was found to be an inflammatory reaction. Consequently, an anti-inflammatory therapy was introduced and employed with success in experiments and in the ...
M, Reim, F W, Schmidt-Martens
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A simplified approach to erosive burning

Symposium (International) on Combustion, 1961
Summary A simplified expression (Equation 20) is presented for rapid determination of an erosion constant k from zero-time steady-state motor firings obtained at various port-to-throat ratios. Application of this method to data obtained on a polyurethane propellant shows that k is constant at 1.10 up to H=3, beyond which it increases linearly with H.
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Numerical Study of Erosive Burning in Solid Propellants

46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2010
We examine, using numerical simulations, the combustion response of model heterogeneous solid propellants to an imposed cross-flow velocity field. We show that this model flow is useful to capture the influence of shear flow in the so-called erosive burning phenomenon observed in actual experiments.
Victor Topalian, Ju Zhang, Thomas Jackson   +2 more
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A model for erosive burning of homogeneous propellants

Combustion and Flame, 2010
We examine the combustion response of a homogeneous solid propellant to an imposed velocity field, as a model for erosive burning. The imposed velocity field has its roots in a multiscale analysis of a planar or cylindrical rocket. We show that for certain realistic choices of the parameters both positive and negative erosion can take place.
Ju Zhang, Thomas L. Jackson
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On the threshold nature of erosive burning

Combustion, Explosion, and Shock Waves, 2008
A physical explanation for the existence of the threshold of erosive burning is proposed. It is shown that this type of combustion occurs when the thickness of the laminar sublayer in the turbulent boundary layer becomes smaller than the thickness of the laminar combustion zone. In this case, turbulent flame in the gas phase is formed.
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Erosive Burning of Some Composite Solid Propellants

Journal of Jet Propulsion, 1954
Experimental data on the erosive burning of several composite solid propellants are reported and discussed. The data appear to be best correlated in terms of a reduced mass velocity. At low Mach numbers , th is correlation becomes equivalent to several widely used forms employing linear velocity.
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An aerothermochemical analysis of erosive burning of solid propellant

Symposium (International) on Combustion, 1963
In a solid propellant rocket of a side burning type, the flow rate of the hot combustion gases parallel to the burning surface is approximately proportional to the distance from the leading edge of the propellant. In the present paper, therefore, the crosive burning of the solid propellant is analyzed by the boundary-layer approximation in ...
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Erosive Burning

AIAA Journal, 1983
J. P. Renie, J. R. Osborn
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