cosmos.wikisort.org - Spacecraft

TIROS 2 (or TIROS-B) was a spin-stabilized meteorological satellite. It was the second in a series of Television Infrared Observation Satellites. It re-entered in May 2014.[5]

TIROS-2

TIROS-2 before launch
Mission type	Weather satellite
Operator	NASA[1]
Harvard designation	1960 Pi 1
COSPAR ID	1960-016A
SATCAT no.	63
Mission duration	376 days
Spacecraft properties
Spacecraft type	TIROS
Manufacturer	RCA Astro GSFC
Launch mass	127 kilograms (280 lb)[2]
Start of mission
Launch date	November 23, 1960, 11:13:03 (1960-11-23UTC11:13:03Z) UTC[3]
Rocket	Thor DM-19 Delta
Launch site	Cape Canaveral LC-17A
End of mission
Last contact	December 4, 1961 (1961-12-05)
Decay date	May 2014
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Semi-major axis	6,755.43 kilometers (4,197.63 mi)
Eccentricity	0.0014596
Perigee altitude	374 kilometers (232 mi)
Apogee altitude	394 kilometers (245 mi)
Inclination	48.51 degrees
Period	92.09 minutes
Epoch	December 8, 2013, 11:58:18 UTC[4]
Instruments
Widefield Radiometer Scanning Radiometer Television Camera System
TIROS ← TIROS-1 TIROS-3 →

Launch

TIROS 2 was launched on November 23, 1960 at 11:13:03 UTC, by a Thor-Delta rocket from Cape Canaveral, Florida. The spacecraft functioned nominally until January 22, 1962. The satellite orbited the Earth once every 98 minutes, at an inclination of 48.5°. Its perigee was 609 kilometers (329 nmi) and apogee was 742 kilometers (401 nmi).

The satellite maintained a spin rate of 8–12 rpm by the use of five diametrically opposed pairs of small, solid-fuel thrusters. The spin axis could be oriented to within 1–2° accuracy by the use of a magnetic attitude control device, consisting of 250 coils of wire wound around the outer surface of the spacecraft. The interaction between the induced magnetic field in the spacecraft and the earth's magnetic field provided the necessary torque for attitude control. The spacecraft functioned nominally until January 22, 1961.

TIROS 2 was powered by 9,260 1-by-2-cm silicon solar cells. It had two independent television camera subsystems for taking pictures of cloud cover, plus a five-channel medium-resolution scanning radiometer and a two channel non-scanning low resolution radiometer for measuring radiation from the earth and its atmosphere.

Instruments

TIROS 2 added two infrared radiometers to TIROS 1 instruments, which allowed more analysis of frontal zones.[6]

References

На других языках

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- [en] TIROS-2

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[ru] Тайрос-2

Тайрос-2 (англ TIROS-2 ) — метеорологический спутник со стабилизацией вращения. Это второй из серии телевизионных инфракрасных спутников для метеорологических наблюдений. Тайрос-2 был запущен 23 ноября 1960 года в 11:13:03 UTC ракетой Тор-Дельта с мыса Канаверал.

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