An experimental investigation into aspects of erosion in rocket motor tail nozzles

Spherical Microglass Particle Impingement Studies of Thermoplastic Materials at Normal Incidence

“…Normal impingement studies of various plastic materials are briefly mentioned in this paper. Thus, epoxy resin (2 and 15), nylon (2, 14, 15, and 17), polypropylene (3,14,15), Tufnol (7), perspex (7,13), and polyurethane (15) have been studied. On the other hand, polyurethane, polyvinylidene fluoride, and fluorocarbon (14, 18, and 20) …”

Numerical simulation of sand erosion phenomena in rotor/stator interaction of compressor

“…ψ and φ represent the energy needed to remove the unit weight of material from the wall by deformation and cutting wear, respectively. Using the experiment by Neilson and Gilchrist [4,5], these parameters were confirmed to predict sand erosion. In the present study, the above-described Neilson-Gilchrist erosion model is employed because of the simplicity.…”

“…Therefore, the simpler relations based on the Bitter's model were proposed by Neilson and Gilchrist [4,5], in which the weight losses W D and W C can be rewritten as,…”

“…Bitter's model gives sufficient prediction in any impinging angle for both of the ductile and brittle materials, but this model is too complex to easily apply for industrial machines. Therefore, Neilson and Gilchrist modified the model to apply for practical calculation based on Bitter's concept [4,5].…”

Near net-shape/net-dimension ZrC/W-based composites with complex geometries via rapid prototyping and Displacive Compensation of Porosity

“…[1][2][3][4][5][6][7][8] Refractory rocket nozzle materials need to be highly resistant to thermal shock and to recession by erosion, vaporization, or thermochemical spallation. [2][3][4][5][6][7][8] Composites comprised of carbides and refractory metals can possess attractive combinations of properties for such extreme environments. Consider, for example, composites of zirconium carbide and tungsten.…”