Development of a parabolic mirror using advanced materials used for an environment friendly propulsion system

Şerbescu, HoraÅ£iu; Sandu, Constantin; Vintila, Ionut Sebastian; Radu, Andrei Aurelian; Niculescu, Filip

doi:10.1063/1.5060685

Cited by 1 publication

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“…The main important piece of the equipment is the concave mirror. The mirror calculation was carried out as in [30]. Design and dimensions of the mirror can be seen in Figure 5.…”

Section: The Mirrormentioning

confidence: 99%

On a New Type of Combined Solar–Thermal/Cold Gas Propulsion System Used for LEO Satellite’s Attitude Control

et al. 2020

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This paper presents the development, construction and testing of a new type of solar–thermal propulsion system which can be used for low earth orbit (LEO) satellites. Currently, the vast majority of LEO satellites are fitted with a cold gas propulsion system. Although such a propulsion system is preferred, the service duration of an LEO satellite is limited by the amount of cold gas they carry onboard. In the case of the new type of solar–thermal propulsion system proposed in this paper, the cold gas is first transferred from the main tank in a cylindrical service tank/buffer tank which is placed in the focal line of a concave mirror. After the gas is heated by the solar light focused on the service tank by the concave mirror, it expands by opening the appropriate solenoid valve for the satellite’s attitude control. In this way the service duration of LEO satellite on orbit can increase by 2.5 times compared with a classic cold gas propulsion system. This is due to the propellant’s internal energy increase by the focused solar light. This paper also presents the results achieved by carrying out tests for the hot gas propulsion system in a controlled environment.

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“…The main important piece of the equipment is the concave mirror. The mirror calculation was carried out as in [30]. Design and dimensions of the mirror can be seen in Figure 5.…”

Section: The Mirrormentioning

confidence: 99%