Dynamics of the composite casing of solid-propellant rocket engine under the influence of impulse loads describing the work processes in the engine

1Chernobryvko, MV, 1Avramov, KV, 2Degtyarenko, PG, Tonkonogenko, AM, 3Mesha, YV, 4Tishkovets, OV, 4Zholos, OV
1A. N. Podgorny Institute for Mechanical Engineering Problems of the National Academy of Sciences of Ukraine, Kharkiv
2Yuzhnoye State Design Office, Dnipropetrovsk
3LTD RPI HARTRON-ARKOS, Kharkiv
4NTU “Kharkiv Polytechnical Institute”, Kharkiv
Kosm. nauka tehnol. 2017, 23 ;(1):18-29
https://doi.org/10.15407/knit2017.01.018
Section: Space Energy, Power and Propulsion
Publication Language: Russian
Abstract: 
We propose the model of the dynamic behavior of solid propellant motor composite casing under the internal impact
pressure. This pressure describes the operation of the engine. The thin-walled casing consists of the cylindrical shell and two bottoms in the form of truncated hemispheres. The casing is clamped to the rocket along two edges of the bottoms. The structure model takes into account the shear, the rotary inertia and the stress-strain relations for the orthotropic material. The semi-analytical method allows analyzing the stress-strain state of the structure. In the model, the thin-walled casing dynamic is described by high dimension system of the ordinary differential equations.
Keywords: equations of thin-walled structure, internal impact pressure, solid propellant motor, stress-strain state
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