Desktop Satellite Commercial Demo Professional Model Jro24sat001 Solar Interplane

RARE Desktop satellite commercial demo professional model ref JRO24SAT001 Solar Interplanetary Gamma Ray Neutron Experiment Experimental French satellite put into service by the USSR in the 1970s This is a rare model of commercial cooperation between the two countries, this type of model was intended to a very small number of people, this model is certainly the only one currently on the scientific and space antiques market. In good condition, unfortunately, the nameplate has been removed from the base. The base is indeed original In lacquered wood and metal Complete and strictly original model Dimensions approximately 27 x 19 x 9 cm For the condition, see the photos Fast and well protected delivery SHIPPING WORLDWIDE Aura carried out an EUV experiment for the solar and atmospheric surveys and a set of UV experiments to create stellar and zodiacal light and integrate sky background and stellar observations. The spacecraft rotated at about 0.25 rpm around an axis pointing toward the sun. The data transmission rate was 256 b/s for real-time data and 11 kb/s for stored data at a telemetry frequency of 136.740 MHz. The memory capacity was 1.6 MB. The cylindrical satellite had a diameter of 0.8 m and a height of 0.7 m and weighed 106.6 kg. Four solar panels located perpendicular to the cylindrical axis powered the mission. The stabilization system failed on December 28, 1976, effectively ending the spacecraft's operation. Sign 3 (Solar Interplanetary Gamma Ray Neutron Experiment) was a French satellite put into orbit by the Soviet Union as part of a cooperation agreement. This satellite was part of the D2 series. He carried out two scientific experiments, one for gamma-ray astronomy in the energy range of 20 keV to 10 MeV, and the other for continuous monitoring of the solar spectrum in two ultraviolet bands (1800 to 1 950 Å and 2050 to 2200 Å). The main body of the spacecraft was a cylinder 70 cm in diameter and 81 cm in height. Electrical power was provided by four solar panels extending 1.3 m from the spacecraft's axis. The solar panel provided 50 W to the silver-cadmium storage batteries. The telemetry equipment consisted of a PCM-PM system, using a 136.7 MHz, 0.5 w transmitter. The real-time data rate was 256 bps. An onboard tape recorder extended data coverage until its failure in March 1978. The control system operated at 148.5 MHz and provided 54 separate commands. The satellite's axis was pointed toward the sun at an angle of 10 degrees to the sun/earth line. Jets of nitrogen gas were used to maintain this orientation.