Figure 1 - available via license: Creative Commons Attribution 3.0 Unported
Content may be subject to copyright.
The outer block combustion vs various disperse admixtures concentrations. As can be seen from the presented results, with an increase in the disperse admixtures concentrations the field effect increases. The direction of the field is not important.
Source publication
The paper presents experimental study results of the disperse admixtures in a flame plasma influence on the polymethylmethacrylate combustion rate change under the action of an electric field in a model hybrid rocket engine. It is shown that increase of disperse admixtures concentration in flame leads to the influence of the field on combustion int...
Contexts in source publication
Context 1
... influence of the disperse admixtures concentration in the inner block on the outer block combustion rate change is shown in Fig. 1. The oxidizer flow rate is 5 kg/m2s. The legend shows the central electrode polarity. The disperse admixtures concentration in the inner fuel block is plotted along the horizontal axis. ...
Context 2
... begin to interact with an electric field. The particles, being in the flame, acquire a high temperature, and shifting under the influence of the field, cause the heat flux to the condensed phase change. This leads to a change in the gassing rate. Consequently, the admixtures concentration increase will lead to field effect intensification (Fig. 1) and the pre-exponential factor in the combustion law increase (Fig. 2). In the electric field, with the introduction of dispersed impurities, an insignificant change in the combustion regime is observed: the degree in the combustion law varies by 7%, which also confirms the proposed explanation. The absence of field direction ...
Similar publications
In chemical propulsion, propellant masses are generally the largest part of the overall weight. Hence, combustion efficiency is a key aspect of the system’s performance and small improvements within the combustion process can result in significant changes in project costs or mission longevity. To analyze detailed chemical and physical processes, di...
Paraffin wax has 3–4 times higher regression rate compared to conventional polymeric fuels used in hybrid rocket applications. Hydroxyl-terminated polybutadiene (HTPB) suffers poor mechanical properties and has lower tensile strength, Young’s modulus compared to pure paraffin wax. The mechanical properties of HTPB can suitably be improved by mixing...
Nowadays, the need for high specific impulse, characteristic velocity, and a good combustion chamber temperature at a moderate O/F ratio which can exhibit better performance for a hybrid rocket engine is desired. At the same time, a low-cost, highly effective, and eco-friendly propellant is always desired for a sustainable ecosystem. In this regard...
A hybrid rocket engine test bench experiment carried out the thrust 300 N, retaining nitrous gas as an oxidant, and 70 weight percent paraffin and 30 weight percent aluminum as fuel. To enhance the regression rate, new fuels such as paraffin-based fuel have been created, allowing for more compact engine designs with high thrust densities. As a resu...
In this work, the formation flight of the CubeSat cluster RODiO (Radar for Earth Observation by synthetic aperture DIstributed on a cluster of CubeSats equipped with high-technology micro-propellers for new Operative services) with respect to a small satellite in LEO (Low Earth Orbit) has been analyzed. RODiO is an innovative mission concept funded...
Citations
... On the other hand, the particles presence in flame contributes to the electric charge accumulation on their surface [1,2]. In [3], the effect of dispersed additives on the resulting change in the combustion rate under the electric field influence in a hybrid rocket engine (HRE) is investigated. The combustion rate increase by 30% in the presence of a dispersed additives and an electric field has been established. ...
... [3]. IOP Conf. ...
In the work, the influence of the electric force from the external electric field on the charged dispersed particles in the flame was evaluated. It is assumed that changes in the effect of the field on the combustion rate in the presence of dispersed additives in the gas phase take place due to the heat flux into the burning polymer condensed phase changes. However, as it turned out, the flame front moving towards the fuel under the action of field forces does not allow to fully explain the combustion rate increase.
