Thermal emission characteristics of combustion products from rocket engines. Part 1. Investigating the nature and level of emission for model LPRE and SPRE
V.A. Kuzmin, I.A. Zagrai, N.A. Shmakova
Vyatka State University, Kirov, Russia
Keywords: model liquid-propellant rocket engine, model solid-propellant rocket engine, thermal radiation, combustion products, emission characteristics, spectral radiation energy flux density, emissivity factor, temperature non-equilibrium
Abstract
The paper presents the calculated spectral densities of radiation energy fluxes and the emissivity factors of combustion products from model liquid and solid propellant rocket engines for the conditions of the combustion chamber, nozzle, initial and main sections of the plume. The influence of temperature non-equilibrium between gas and particle flows on the spectral and integral emission characteristics of combustion products is investigated. The calculated results of this work are compared with experimental and computed data of other authors. Particular attention is focused on the nature and level of emission at different locations of outflowing combustion products. The results of the work may be used to choose a section of the spectrum when determining the temperature of combustion products by pyrometric methods.
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