DS-U2-I (- Ionospheric ) - a type of Soviet scientific research spacecraft developed in OKB-586 (now - Yuzhnoye Design Bureau ) and designed for a comprehensive study of the characteristics of the Earth's ionosphere and electromagnetic radiation of near-Earth space. [one]
| DS-U2-IP | |
|---|---|
| General information | |
| Manufacturer |  OKB-586 |
| A country | the USSR |
| Application | a comprehensive study of the characteristics of the Earth's ionosphere and electromagnetic radiation of near-Earth space. [one] |
| Specifications | |
| Platform | DS-U2 |
| Length | 2.4 m |
| Width | 2.3 m |
| Weight | 286 kg |
| Flight duration | 90 |
| Production | |
| Status | completed |
| Made | 3 |
| Launched | 3 |
| First start | Spacecraft Cosmos-119 |
Decoding of the name "DS-U2-I":
- "DS" - " Dnepropetrovsk satellite ", a series of spacecraft for the needs of science.
- U2 - “unified” (refers to the modification of DS-U2 )
- And - Ionospheric
Content
Design Features. Features
The spacecraft DS-U2-I is developed on the basis of the universal platform DS-U2 . Power is supplied from non-oriented solar panels . This is a characteristic feature of the DS-U2 platform, distinguishing it from the DS-U1 and DS-U3 platforms developed by OKB-586.
The design feature of the spacecraft that distinguishes it from other spacecraft based on the DS-U2 is the presence of a block of special antennas for scientific equipment, consisting of 4 retractable ribbon pins 15 m long mounted on a common base, and a gas-reactive spinning system of the spacecraft around the longitudinal axis.
Features
- Weight, kg - 286
- The calculated parameters of the orbit:
- perigee height, km - 219
- apogee height, km - 1353
- orbital inclination, deg - 48.5
- Time of active existence, days - 90
- Booster - 11K63
Composition of scientific equipment
- Receivers PM-4M-1, PM-4M-N. operating at three fixed frequencies in the range of 15 ... 55 kHz;
- filter converter FP-1;
- FI filter
- R-2P receivers. R-ZP. providing measurement of "white noise" in the frequency band with medium frequencies 0.185; 0.425; 3.0; 5.7 MHz;
- F-2P filters. F-ZP;
- power supply unit BP-1;
- remote sensor 4K-63;
- counter installation 1K60;
- electronic block EB-4K.
Operation
The first launch of the spacecraft DS-U2-I ( Cosmos-119 ) took place on May 24, 1966 from the Kapustin Yar 86/1 cosmodrome using the Cosmos-2 launch vehicle (LV).
In the course of using spacecraft of the DS-U2-I series, the following scientific results were obtained:
- A useful signal was received at all operating frequencies of the equipment, and the fact of the passage of 31.8 kHz and 44.9 kHz radio waves through the ionosphere was confirmed for the first time in the world;
- The hypothesis about the possibility of the passage of ultra-low frequency electromagnetic waves through the ionosphere is confirmed;
- The data obtained made it possible to evaluate the dependence of the concentration of charged particles in the lower layers of the ionosphere on the time of day and other factors.
In total, three devices of the DS-U2-I series were launched into orbits. The other two vehicles were Cosmos-142 and Cosmos-259 .
See also
- Cosmos (spacecraft)
- Dnepropetrovsk satellite
- DS-U2-IP
- Design Bureau "South"
Notes
- ↑ 1 2 Rockets and spacecraft of the Design Bureau "Southern", 2001 , p. 133.
Literature
- Rockets and spacecraft Design Bureau "Southern" / Under the total. ed. S. N. Konyukhova . - Dnepropetrovsk: LLC “Kolograf”, LLC RA “Tandem-U”, 2001. - T. 1. - 240 p. - 1100 copies. - ISBN 966-7482-00-6 .
- V. Agapov. By the launch of the first satellite of the DS series // Cosmonautics News: journal. - M .: Videocosmos, 1997.- T. 7 , no. March 10-23 , No. 6/147 . Archived February 2, 2014.
Links
- Space launches and events in the USSR and Russia . Cosmos.info. Date of treatment May 3, 2013. Archived May 12, 2013.
- Spacecraft Cosmos 378 . Section of the RAS Council on Space. Date of treatment May 3, 2013. Archived May 16, 2013.
- Spacecraft Cosmos 49 . Section of the RAS Council on Space. Date of treatment May 3, 2013. Archived May 12, 2013.
- NSSDC Master Catalog Search . NSSDC Master Catalog Search. Date of treatment May 3, 2013. Archived May 12, 2013.