Investigation on self-pressurization and ignition performance of nitrous oxide fuel blend ethylene thruster

Abstract In this paper, a novel method is developed to analyze the thermal parameters of Nitrous Oxide Fuel Blend Ethylene and establish the saturated vapor pressure relationship with temperature from −80 to 30 °C based on Peng–Robinson equation of state, vapor/liquid phase equilibrium relation and Helmholtz equation. The experiments were conducted to validate the reliability of thermodynamic model. The self-pressurization flow model and sectionalized–centralized parameter gasification model of pipeline are established and validated. A chemical reaction mechanism with 129-species 900-reaction of Nitrous Oxide Fuel Blend Ethylene is established and the flame kernel parameters and laminar flame speed are obtained by steady-state, quasi-one-dimensional reacting flows simulations. Laminar flame speed of nitrous oxide fuel blend ethylene was measured and compared with calculated flame characteristics.