Технический эксперимент «Отклик» Report from the ISS RS of Russian cosmonauts Alexander Alexandrovich SKVORTSOV and Oleg Germanovich ARTEMIEV on Space experiment Otklik

(A.A. SKVORTSOV) Dear visitors to web portal "Korolev's Planet"!
Our today's report is devoted to studying environment overboard the International Space Station and its safety precautions. To begin with, space environment surrounding the International Space Station is aggressive to it. Space is not just a vacuum. It rains in space too. This rain consists of two different fluxes of particles: meteoroid showers and technogenic particles. Meteoroid showers are related to objects of space origin, comets.
Fluxes of technogenic particles result from man-made space objects. These are all types of satellites which lost control or exploded in orbit.
As you can see (chipping on cabin window No1), space particle hit cabin window and damaged part of its external surface. It is a good thing that the cabin window is a double-glass system. The fact that space particles can damage space vehicle is not a myth, it is a harsh reality.

(O.G. ARTEMIEV) Hullo! Space station is the house for cosmonauts. Each expedition normally lives in this "house" up to six months. It is known that home atmosphere is the most important thing. Home atmosphere should be taken care of. In much the same manner as we do it on the ground. As you understand, MCC follows the flight of large objects approaching the International Space station, while smaller objects are under our control, control of cosmonauts. Hardware of space experiment Otklik enables to monitor them. Now you can see that J am holding cosmonauts' console of hardware Othklik in my hands.
SE Otklik is aimed to study meteoroid and technogenic particles whose size is from 0,1 to 10 mm and which collide with external structural members of the station. By this is meant that these particles pose no threat to envelope of the station, because the station pressure hull can withstand impacts of particles whose sizes are up to 10 mm. But knowledge of these particles flux power is a critical requirement for structural deign of spacesuits for cosmonauts engaged in extravehicular activity for designing radiators, solar arrays, scientific equipment to be accommodated on the outside of spacecraft. These particles cannot be recorded from the ground, it is impossible to predict when they occur. RSC Energia specialists led by famous scientist Vyacheslav Georgievich Sokolov developed the method for determining collision spot of a particles with the station hull without its direct inspection.
On the whole, the system incorporates three elements. Sensors constitute the first element. Altogether there are 13 sensors and they are arranged along the entire perimeter of Service Module. Now you can see one of the thirteen sensors. The rest of them can be found in not easily accessible places. That sensor is one of the few ones which is disposed very conveniently so that you could make it out. It is placed next to cabin window No3 near central station. Here is how it looks. This is sensor No14. Each of the sensors is connected by cable with control unit. There are 13 cables for 13 sensors. Cables constitute the circulatory system which lets information pass.
Control unit is the system second element. It has the following functions: receiving signals from the sensors and their processing, generation of information to the space station telemetry system.
The third system element is cosmonaut's console. (to be shown). This console can display the results of the sensors response to collisions occurred. With the help of the system we can see impact spot and time, pulse and energy of impacting particle.
Measurements are taken at all times. Impacts of relatively large particles
(with d > 1 mm) can cause punctures of external structural members (housings, radiators, meteorite shields) and generation of pits on the station hull. Should the system record impacts like that, extravehicular activity (EVA) program will be updated so that cosmonauts can perform a visual examination of the station at a supposed impact spot. That will allow to verify impact recording accuracy and at the same time conduct repair work if necessary.
Hardware developer is Voronezh Scientific – Design Office Ferrit.
Thank you for your attention.


Космический эксперимент «Откли...
Космический эксперимент «Отклик»







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