JSC Academician M.F. ReshetnevInformation Satellite Systems

Millimetron: project progress

Information Satellite Systems – Reshetnev Company has completed testing of a model of a primary mirror intended for the space observatory Millimetron.

As part of the tests performed on the dedicated model of Millimetron’s primary mirror ISS-Reshetnev technicians deployed this structure and examined its geometry parameters. The specified accuracy requirement of up to 0.3 millimeters was verified during the test and it enabled specialists to further proceed to the next step – the installation of panel structures that form the reflecting surface of the primary mirror.

Primary mirror is one of the main structures of the Millimetron observatory’s telescope. It represents a deployable structure consisting of a fixed central part three meters in diameter and 24 foldable petals – altogether they constitute a reflecting surface 10 meters in diameter. When transported, the telescope petals will be positioned above the central mirror forming a compact cocoon. In orbit the primary mirror’s petals will deploy synchronically, and in combination with the central mirror they will form a parabolic bowl.

As of today, ISS-Reshetnev Company has fabricated a number of models of the onboard scientific instruments complex and continues working on the thermal control system intended to cool down Millimetron’s mirror system and receiving equipment as well as to control the temperature of the uncooled container.

The space observatory Millimetron is being built for the Russian Federal Space Agency. Within the scope of this project, Lavochkin Research and Production Association is responsible for the spacecraft’s service systems module, while the mission-critical payload is provided by the Astro Space Center of the Physical Institute of the Russian Academy of Sciences. Being a co-contractor to the Astro Space Center of the Physical Institute of the Russian Academy of Sciences, ISS-Reshetnev Company is tasked to develop working design documentation, manufacture the onboard scientific instruments complex, including some of its structures, operating systems, and the onboard harness system; as well as to assembly and test this complex.

The Millimetron observatory is intended to study deep space objects covering the millimeter, submillimeter and infrared spectral ranges. The spacecraft is expected to have a 10-year active lifespan.