Nadezhda
Nadezhda (11F643N, 17F118) was a Soviet civilian satellite navigation system used by the Soviet Merchant Marine and Academy of Sciences, but also by the military, as part of the Tsikada constellation. They featured also a COSPAS search and rescue system.
The Nadezhda and Tsikada satellites were very similar to the Parus satellites and also used a NPO PM built pressurized cylindrical bus with gravity-gradient stabilization. The satellites transmitted Doppler-shifted VHF transmissions at around 150 MHz and 400 MHz of their position and orbital characteristics. They operated from a 1000 km orbit with 82.9° inclination. Satellites were placed in planes spaced 45° apart.
The development of Tsikada began in 1974 and the first satellite was launched in 1976. The system entered the operational phase in 1978.
Nine satellites were launched, all on Kosmos-3M boosters. Three received Kosmos designations, the remaning were launched as Nadezhda.
A modified Nadezhda-M was launched as the tenth Nadezhda satellite.
Nation: | USSR / Russia |
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Type / Application: | Navigation / SAR Transponder |
Operator: | |
Contractors: | NPO Prikladnoi Mekhaniki (NPO PM) |
Equipment: | |
Configuration: | KAUR-1 |
Propulsion: | |
Power: | Solar cells, batteries |
Lifetime: | |
Mass: | 820 kg |
Orbit: | typical 950 km × 1005 km, 82.9° |
Satellite | COSPAR | Date | LS | Launch Vehicle | Remarks | |
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Kosmos 1383 (Nadezhda #1, COSPAS 1) | 1982-066A | 29.06.1982 | Pl LC-132/1 | Kosmos-3M | ||
Kosmos 1447 (Nadezhda #2, COSPAS 2) | 1983-021A | 24.03.1983 | Pl LC-132/2 | Kosmos-3M | ||
Kosmos 1574 (Nadezhda #3, COSPAS 3) | 1984-062A | 21.06.1984 | Pl LC-132/2 | Kosmos-3M | ||
Nadezhda 1 (Nadezhda #4, COSPAS 4) | 1989-050A | 04.07.1989 | Pl LC-133/3 | Kosmos-3M | ||
Nadezhda 2 (Nadezhda #5, COSPAS 5) | 1990-017A | 27.02.1990 | Pl LC-132/2 | Kosmos-3M | ||
Nadezhda 3 (Nadezhda #6, COSPAS 6) | 1991-019A | 12.03.1991 | Pl LC-133/3 | Kosmos-3M | ||
Nadezhda 4 (Nadezhda #7, COSPAS 7) | 1994-041A | 14.07.1994 | Pl LC-133/3 | Kosmos-3M | ||
Nadezhda 5 (Nadezhda #8, COSPAS 8) | 1998-072A | 10.12.1998 | Pl LC-132/1 | Kosmos-3M | with Astrid 2 | |
Nadezhda 6 (Nadezhda #9, COSPAS 9) | 2000-033A | 28.06.2000 | Pl LC-132/1 | Kosmos-3M | with Tsinghua 1, SNAP 1 |