Results 111 to 120 of about 2,457 (166)

Erosive-burning study of stick propellants

23rd Joint Propulsion Conference, 1987
Abstract : A theoretical model was solved numerically for simulating erosive-burning processes occurring inside the center perforation of an unslotted NOSOL-363 stick propellant. Results show that the erosive-burning phenomenon is caused by the enhanced heat feedback from the gas phase to solid phase resulting from the combined effect of increased ...
C. ZANOTTI, K. KUO
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Erosive burning in solid propellant motors

27th Joint Propulsion Conference, 1991
The erosive burning of ammonium perchlorate (AP) inert binder propellents is considered both experimentally and from the modeling viewpoint. The full modelization, developed earlier, is applied for various scales and reveals a pronounced scale effect. From these numerical results and preceeding others, a correlation law is thus extracted which gives an
J. C. Godon, J. Duterque, G. Lengelle
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Tracheo-Innominate Artery Erosion in a Burned Child

The Journal of Trauma: Injury, Infection, and Critical Care, 1978
A tracheo-innominate artery erosion in a 10-year-old boy 10 months after 80% burns in a gasoline explosion is reported. Tracheostomy was performed on the day of the burn to maintain an airway. Fatal hemorrhage from the erosion was the cause of death.
J A, Majeski, B G, MacMillan
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Erosive burning of solid propellants

Journal of Propulsion and Power, 1993
Presented here is a review of the experimental and modeling work concerning erosive burning of solid propellants (augmentation of burning rate by flow of product gases across a burning surface). A brief introduction describes the motor design problems caused by this phenomenon, particularly for low port/throat area ratio motors and nozzleless motors ...
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Numerical studies of solid propellant erosive burning

Journal of Propulsion and Power, 1993
A model of solid propellant erosive burning is developed. Reciprocal interaction of turbulence with chemical reaction is taken into account by considering correlations for turbulent heat transfer affected by combustion reaction in the flame zone and developing an expression for the averaged value of combustion reaction rate.
Victor K. Bulgakov, Alexander I. Karpov, Alexei M. Lipanov   +2 more
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Erosive Burning Correlations: Scaling Hydraulic Diameter

43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2007
Lenoir & Robillard’s hydraulic diameter (Dh) scaling deficiencies are eliminated with generalized Prandtl number (Pr) scaling. Parameter perturbations about TitanIIIc’s aft end port state at ignition reveal this result agrees with Lenoir & Robillard and SPP’s empirical modification for small motors but can differ significantly for larger motors ...
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Wind Erosion of Soils Burned by Wildfire

International Symposium on Erosion and Landscape Evolution (ISELE), 18-21 September 2011, Anchorage, Alaska, 2011
Wind erosion and aeolian transport processes are largely unstudied in the post-wildfire environment, but recent studies have shown that wind erosion can play a major role in burned landscapes. A wind erosion monitoring system was installed immediately following a wildfire in southeastern Idaho, USA to measure wind erosion from the burned area (Figure 1)
null Natalie S Wagenbrenner, null Matthew J Germino, null Brian K Lamb, null Randy B Foltz, null Peter R Robichaud   +4 more
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A model of erosive burning of composite propellants

13th Propulsion Conference, 1977
Abstract : Development of solid rocket motor designs which result in high velocity flows of product gases across burning propellant surfaces(notably, nozzleless rocket motors) is leading to increased occurrence of erosive burning. In this paper, a physically realistic picture of the effect of such crossflow on composite propellant combustion, based on ...
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SRM Performance Improvement: Erosive Burning Phenomenon

42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2006
*In this paper, the internal ballistics of solid propellant rocket motor with an arbitrary grain configuration is numerically investigated using quasi one dimensional simulation of Inviscid conservation equations. The upwind Roe’s scheme is used to calculate the convective fluxes.
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Erosive burning mechanism of double-base propellants

Symposium (International) on Combustion, 1988
Measurements of the combustion wave structure of solid propellants with and without cross-flow conditions were conducted to elucidate the mechanism of erosive burning. The propellants tested were three types of double-base propellants containing different energy levels: a lowenergy, a reference, and a high-energy propellant.
A. Ishihara, N. Kubota
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