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What Are Rockets?
Published in Travis S. Taylor, Introduction to Rocket Science and Engineering, 2017
For an even simpler description of a rocket, the best example is the hobbyist’s model rocket. The types of model rockets that we all built as kids and launched with small cardboard cylinders filled with solid propellant are not really a “model rocket.” In essence, the small cardboard, plastic, and balsa wood vehicles are truly rockets. Figure 1.34 shows the major components of the hobby rockets. It is useful to think about the small rocket systems with the components shown in Figures 1.32 and 1.33 in mind. A comparison of the figures also shows the difference in complexity between a liquid- and a solid-fueled rocket system.
Cold-Crafted KNSu Mechanically Pressed Burning Rate for Combustion Pressure Ranging from 0.9 to 7.7 bar
Published in Combustion Science and Technology, 2023
Carlos Henrique Marchi, Antonio Carlos Foltran, Diego Fernando Moro, Nicholas Dicati Pereira da Silva, Luciano Kiyoshi Araki, Izabel Cecília Ferreira de Souza Vicentin, Éderson Luiz dos Santos Dias, Alexandre Vidal Bento, Marcos Carvalho Campos (in memoriam)
KNSu has been employed in rocket engines and experimental tests since 1943, in model rockets since 1947, and in academic contests (Parkin 1959; Brinley 1960; Vyverman 1978; Nakka 1984; Marchi et al. 1990; Leslie and Yawn 2002; Foltran, Moro, Silva et al. 2015). KNSu also allows studies involving rocket propulsion, aerodynamics, and model rocket flight. Its advantages include low cost, ease of acquiring and preparation, and enhanced safety. Cold-crafted KNSu is safer than all the other methods; therefore, its burning rate is important for safe rocket engine design and accurate performance prediction.
Computational investigations of the coupling between transient flame dynamics and thermo-acoustic instability in a self-excited resonance combustor
Published in Combustion Theory and Modelling, 2019
Tejas Pant, Chao Han, Haifeng Wang
The rest of the paper is organised as follows. In Section 2, an overview of the experimental setup of the model rocket combustor is provided. Section 3 establishes the modelling framework for this study. In Section 4, the numerical simulations are validated with the experiments. Parametric studies of modelling thermo-acoustic instability in the model rocket combustor are conducted in Section 5. In Section 6, the two-way coupling between the transient flame dynamics and the thermo-acoustic instability is analysed in detail. The conclusions are drawn in Section 7.
Active Control of Fuel Position in Opposed-Flow Strand Burner Experiments
Published in Combustion Science and Technology, 2022
Clayton M. Geipel, Christopher J. Pfützner, Brian T. Fisher
Model rocket starters (Estes, StarTech) were used as disposable ignition sources. The head of the starter rested on top of the fuel surface at the center, as shown in Figure 2. A relay was used to route electrical current through the starter to initiate the burn test at the desired time. Shortly afterward, a linear solenoid actuator pulled the remains of the starter away from the burner.