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Kosmos 381
Mission type	Ionospheric science
Operator	Soviet space program
COSPAR ID	1970-102A
SATCAT no.	4783
Mission duration	53 years, 10 months, 27 days (in orbit)
Spacecraft properties
Spacecraft type	Ionosfernaya
Bus	KAUR-1
Manufacturer	OKB-10
Launch mass	710 kg (1,570 lb)
Start of mission
Launch date	December 2, 1970, 04:00 UTC
Rocket	Kosmos-3M 11K65M
Launch site	Plesetsk 132/2
End of mission
Disposal	Decommissioned
Last contact	January 1971
Decay date	~3170
Orbital parameters
Reference system	Geocentric
Regime	Low Earth orbit
Perigee altitude	961 km (597 mi)
Apogee altitude	1,007 km (626 mi)
Inclination	74°
Period	104.8 minutes
-
Instruments
-	Cosmic Ray Detector
-	VLF Receiver
-	Solar Ultraviolet Detector
-	Space Radiation Detector
-	High Frequency Impedance Probe
	Kosmos (satellites) ← Kosmos 380 Kosmos 382 →

Cosmos 381 (Russian: Космос 381) artificial satellite provided data on the physical characteristics of the layers of the Earth's Ionosphere using a Mayak radio transmitter. The study covered almost the entire global surface.^[3]

Launch

The satellite was launched into a Low Earth Orbit by a Kosmos-3 rocket (11K65M) from the LC–132/2 starting point at Plesetsk Cosmodrome on the 2nd of December, 1970.

Orbit

Orbit was 971km at periapsis and 1013km at apoapsis. Inclination 74 degrees. Decay into the Earth's atmosphere is expected after about 1,200 years.^[3]

External links

Űrhajózási lexikon. Chief editor Iván Almár. Budapest: Akadémiai – Zrínyi. 1981. ISBN 963 05 2348 5
Lib.Cas

References

^ ^a ^b ^c ^d Mark Wade. "Ionosfernaya". Encyclopedia Astronautica. Retrieved 17 September 2024.
^ ^a ^b ^c Gunter D. Krebs. "Ionosfernaya Stantsiya 1, 2". Gunter's Space Page. Retrieved 17 September 2024.
^ ^a ^b ^c Reginald Turnill (1987). Jane's Spaceflight Directory. Vol. 3. Jane's Information Group. p. 206. ISBN 978-0-710-60838-3.