Universitetskiy-Tatyana-2

UV and Red Detector

The detector allows you to register the glow of the Earth’s atmosphere. It works in the ultraviolet and red ranges of radiation. The block consists of two photodetectors , one of them is covered by a filter transmitting radiation with a wavelength of 300-400 nm, the other - 600-700 nm. After the filters, the radiation enters the photomultiplier tubes , then the resulting electrical signal is amplified and transmitted to two 10-bit ADCs with a sampling frequency of 100 kHz. The device only works when the satellite passes the night side of the Earth.

Charge Fluctuation Detector

Records changes in the flow of charged cosmic particles in orbit. It is a scintillation plate with an area of ​​400 cm², a fiber is located along one of the faces, the radiation collected by it is transmitted to a photomultiplier, and then to an ADC with a resolution of 10 bits and a sampling frequency of 10 kHz.

Ultraviolet Image Detector

The telescope “T” records the size and shape of the spatial distribution of individual flares in the ultraviolet range, which were recorded by detectors of ultraviolet radiation and a charged component. Spectrometer "C" studies their spectral composition. Both of these devices are combined into a single device - MTEL.

Electronic Spectrometer

Measures the temperature, density and electric potential of the electron plasma of the ionosphere and the Earth's magnetic field .

Micro Accelerometer

Measures fluctuations of the Earth 's gravitational field along the flight path.

Experimental BCVM

Technological tests of an experimental microcomputer in open space.

The spacecraft was launched on September 17, 2009 19:55 Moscow time from the Baikonur cosmodrome with the Soyuz-2.1b launch vehicle with the Fregat booster in conjunction with a group of other spacecraft. At 20:04, the booster block with spacecraft successfully separated from the 3rd stage of the launch vehicle. At 20:45, the spacecraft separated from the upper stage in the calculated orbit.

The stabilization of the position of the device in space was completed in 11 minutes. The temperature regime of the passive thermoregulation system was established in 6 turns. Subsequently, the target satellite equipment was turned on and successfully tested. ^[3]

In February 2010, the satellite’s orientation and stabilization system failed, as a result of which the scientific program had to be interrupted by turning off the target equipment. ^[four]

Despite the fact that the satellite worked for 4 months instead of 1 year, a number of unexpected results were obtained on it about the nature of light transients in the upper atmosphere. It turned out that a series of successive outbreaks can occur in cloudless areas. The distribution of flares was also unusual: powerful flares are concentrated, like lightning during thunderstorms, over the continents, however, faint flashes are distributed evenly over the surface of the Earth. ^[5]

• Tatyana-2 (neopr.) . Space Research Laboratory / Ulyanovsk State University. Date of treatment December 1, 2014.
• Small spacecraft "University - Tatyana - 2" (neopr.) . OJSC "Corporation VNIIEM". Date of treatment December 1, 2014.
• Tatiana-2 / Universitetsky-2 (English) . eoPortal Directory . Date of treatment March 11, 2015.