Visual and microscopic examination of the rocket engine combustion chamber
Aircraft Engineering and Aerospace Technology
ISSN: 0002-2667
Article publication date: 28 February 2019
Issue publication date: 19 March 2020
Abstract
Purpose
This paper aims to enhance the selection of the best material of the rocket engine combustion chamber. The chamber has been destroyed during dynamometer tests, and the goal of this inspection is to verify the nature of the damage in the context of checking the usefulness of this type of graphite for the combustion chamber construction.
Design/methodology/approach
This paper presents the results of visual and microscopic inspection of the rocket engine combustion chamber of Ø50 × 165 mm in dimension, which was made of R type graphite.
Findings
An analysis of the fracture surface shows that in the inspected combustion chamber voids and inclusions are present. EDS analysis of the fracture surface shows that in the inspected combustion chamber inclusions are present which have a relatively high amount of elements like: Ti, C, S, V, Si, O and a relatively small amount of Fe and Ni.
Research limitations/implications
Research limitations is concerned the failure analysis by a scanning electron microscope (SEM) Zeiss EVO 25 MA with EDS detector: Brüker X Flash Detector 5010 125 eV and Espirit 1.9.0.2176 EDS software.
Practical implications
Designing of the engine combustion chamber the researches can select the best of the rocket engine combustion chamber, made of R type graphite, with the minimum voids and inclusions to decrease the possibility of bursting of this chamber.
Originality/value
The most dangerous issues in the inspected combustion chamber during an outflow are hot gases as a result of high fuel combustion temperature, so it causes the nozzle heating and the engine stress increase of visible inclusions in cross-sections.
Keywords
Citation
Wisniewski, A., Malicki, M. and Manaj, W. (2018), "Visual and microscopic examination of the rocket engine combustion chamber", Aircraft Engineering and Aerospace Technology, Vol. 92 No. 3, pp. 368-375. https://doi.org/10.1108/AEAT-06-2018-0166
Publisher
:Emerald Publishing Limited
Copyright © 2019, Emerald Publishing Limited