Combustion performance and scale effect from N2O/HTPB hybrid rocket motor simulations

Regression rate and combustion performance investigation of aluminum metallized HTPB/98HP hybrid rocket motor with numerical simulation

“…Hence, the final oxidation product AL 2 O 3 is treated as like a gas-phased species with a low diffusivity. The evaporation and combustion of aluminum can be given by (19) The eddy dissipation model is selected here as the most appropriate combustion model, as a result of the fact that combustion process is dominated by the diffusion. The eddy dissipation model is a semi-empirical model developed with the hypothesis of fast chemistry.…”

“…The advantages, such as safety, simplified throttling and shutdown, and low cost, make it suited for a broad range of application including sounding rocket, tactical rocket, space engines and launch vehicle. And over the past decade, the HRM has been widely investigated by experimental study, theoretical analysis and numerical simulation [2,13,19,20,23,24].…”

Design and Test of a Student Hybrid Rocket Engine with an External Carbon Fiber Composite Structure

“…As the flight fluid supply system would not be able to sustain this increased oxidizer mass flow for the complete burn time, further work would have to be carried out to achieve design performance at tolerable oxidizer mass flows. Figure 8 shows the fuel grain regression rates obtained from the four tests compared against data from literature [8,[31][32][33]. The regression rate curves from these data follow the empirical power law [7] r = a · G n ox (18) in which the coefficients a and n are obtained through experimental data.…”

Numerical Study of Fuel Regression in Hybrid Rocket Engine

“…According to literature, several approaches have been adopted for radiation modelling. In most studies on fuel regression rate hybrid rockets, radiation is neglected ( [14][15][16][17][18][19]) assuming that this phenomenon would be significant only for metallized fuels. However Chiaverini et al [7] have shown that for relatively low oxidant flows, radiation could have a significant effect on the fuel regression rate even though the importance of this effect is particularly controverted in the literature.…”