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Article
Publication date: 1 August 2001

P.G. Babayevsky, N.A. Kozlov, A.N. Shubin, I.V. Tchurilo and T.N. Smirnova

More than 20 years’ experience in development and application of techniques and instrumentation for evaluation of space environment effect on polymer materials and adhesively…

Abstract

More than 20 years’ experience in development and application of techniques and instrumentation for evaluation of space environment effect on polymer materials and adhesively bonded joints in active experiments on‐ and overboard low Earth orbit space stations Salyute, Mir and the international space station (ISS) is reviewed. Six techniques and instrumentation sets were developed and tested for remote control of polymer materials and adhesive joints structure/properties changes during long‐term exposure in space environment. This made it possible to evaluate visco‐elastic and dielectric properties, surface defectiveness and crack resistance as material parameters, which are sensitive to structure changes of polymer materials and adhesive joints and are their important service characteristics. Some experimental results of the techniques and instrumentation, ground and space tests are presented.

Details

Aircraft Engineering and Aerospace Technology, vol. 73 no. 4
Type: Research Article
ISSN: 0002-2667

Keywords

Article
Publication date: 30 July 2021

Andrii Dreus, Vitaly Yemets, Mykola Dron, Mykhailo Yemets and Aleksandr Golubek

Leading developers and providers in the modern space launch market note a splash in the development of ultralight launch vehicle (LV), driven by the growing demand for small…

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Abstract

Purpose

Leading developers and providers in the modern space launch market note a splash in the development of ultralight launch vehicle (LV), driven by the growing demand for small satellites for large constellations in low Earth orbits. One of the promising ways to solve the problem of the quick launch of such satellites is to use a new type of ultralight launch vehicle with a plastic body. The project of such a launch vehicle was proposed by Oles Honchar Dnipro National University (Ukraine). Along with that, there is a need for appropriate research studies on the thermal resistance of the plastic shell, as the physical, mechanical and thermophysical characteristics of polymers significantly differ from traditional aerospace materials. The purpose of this study is to validate the design and ballistic parameters of such a launch vehicle in terms of providing an acceptable thermal environment at the atmospheric phase of the trajectory.

Design/methodology/approach

The workability of a new type of propulsion system is being investigated experimentally in bench conditions. To study the process of aerodynamic heating of a plastic shell, numerical modeling based on the integration of the flight dynamics and heat transfer equations is used.

Findings

Brief information about the design of a new type of ultra-light autophage launch vehicle with a plastic body is presented. A mathematical model for the movement of the launch vehicle at the atmospheric phase of the trajectory, and for the heating of the polyethylene body of the launch vehicle, taking into account the dynamic change in the atmospheric parameters is proposed. The influence of the motion trajectory on the thermal environment of the rocket body is investigated, rational motion trajectories and corresponding permissible g-loads are determined.

Originality/value

The fundamental possibility of using plastic (polyethylene) as a structural material and fuel for bodies of a new type of ultralight launch vehicles has been substantiated. It is shown that to ensure acceptable thermal conditions of a plastic body, it is necessary to use thermal insulation. It is proposed to use a polymeric Teflon coating as such thermal insulation. The results are important for the development of technologies for launching small satellites into orbit, as the use of plastic as the main structural material of the rocket body will significantly reduce the launch cost.

Details

Aircraft Engineering and Aerospace Technology, vol. 94 no. 4
Type: Research Article
ISSN: 1748-8842

Keywords

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