Eutelsat W5

Also called Eutelsat 3F1 or Eutelsat W1, later renamed W5, then Eutelsat 70A, Eutelsat 25C, Eutelsat 33B

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General

Designation	27554 / 02051A
Launch date	20 Nov 2002
Country of origin	Europe
Mission	Telecommunications
Geostationary orbit	see below
Launch vehicle	Delta #293

In May 1998 a fire broke up in the factory where the satellite was being built. The cause for the fire was that one of the antennas, being tested at maximum power, was directly pointing towards a wall covered in carbon foam. Owing to the high RF power released (60 Watts) the foam quickly overheated and started burning. The satellite was covered with water (not fire!) and later declared a total loss.

In 2002, Eutelsat bought the satellite for a launch just a few months later and renamed it Eutelsat W5.

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Location

Begin	End	Position
L: 20 Nov 2002	Dec 2002	53.5°E
Jan 2003	Jan 2013	70.5°E, Eutelsat 70A
Feb 2013	Oct 2013	25.5°E, Eutelsat 25C
Nov 2013	Oct 2015	33°E, Eutelsat 33B

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End of life

Out of service	October 2015
Cause	failed

On 16 Jun 2008, a power generation anomaly occured and 4 transponders were permanently lost. It was later revealed that 1 of the 2 solar panels was lost (the array's drive motor failed).

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External resources

sat-index articles

Technical data

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Lyngsat transponder loading

EIRP coverage (dBW)
G/T coverage (dB/K)

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Specifications

Prime contractor	Aerospatiale (with DASA, Alenia & SS/L)
Platform	Spacebus-3000B2
Mass at launch	3170 kg
Mass in orbit	1900 kg
Dry mass	1400 kg
Dimension	4.6 x 2.5 x 1.8 m (29 m span in orbit)
Solar array
Stabilization	3-axis
DC power	EOL: 5900 W
Design lifetime	12 years

Beacons: 11.451091 or 11.452570 + 12.501 + 11.200 GHz

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Ku-band

Main transponders	24
Backup transponders
Power	90 W
Bandwidth	72 MHz (6 switchable to steerable beam 1, 6 to steerable beam 2)
Coverage	Western Europe, Central Asia and India 2 steerable beams
EIRP max	fixed: 47 dBW steerable: 52 dBW
Polarization	linear
Frequencies	uplink: 13.0-13.25 GHz & 13.75-14.5 GHz downlink: 10.95-11.7 GHz (18 transp.) & 12.5-12.75 GHz (6 transp.)

The steerable beams have got an elliptical footprint that can be rotated by up to +/- 90°

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Transponder frequency chart (GHz)

Horizontal Uplink	Horizontal Downlink	Transponder	Vertical Downlink	Vertical Uplink	Uplink	Downlink
	10.99167	B1		14.29167	Fixed	Fixed
14.29167		B2	10.99167		Fixed	Fixed
	11.07500	B3		14.37500	Fixed	Fixed
14.37500		B4	11.07500		Fixed	Fixed
	11.15833	B5		14.45833	Fixed	Fixed or steerable 2
14.45833		B6	11.15833		Fixed	Fixed or steerable 2
	11.24167	C1		13.04167	Fixed or steerable 1	Fixed or steerable 1
13.04167		C2	11.24167		Fixed or steerable 1	Fixed or steerable 1
	11.32500	C3		13.12500	Fixed or steerable 1	Fixed or steerable 1
13.12500		C4	11.32500		Fixed or steerable 1	Fixed or steerable 1
	11.40833	C5		13.20833	Fixed or steerable 1	Fixed or steerable 1
13.20833		C6	11.40833		Fixed or steerable 1	Fixed or steerable 1
	11.49167	D1		13.79167	Fixed or steerable 2	Fixed or steerable 2
13.79167		D2	11.49167		Fixed or steerable 2	Fixed or steerable 2
	11.57500	D3		13.87500	Fixed or steerable 2	Fixed or steerable 2
13.87500		D4	11.57500		Fixed or steerable 2	Fixed or steerable 2
	11.658.33	D5		13.95833	Fixed or steerable 2	Fixed
13.95833		D6	11.658.33		Fixed or steerable 2	Fixed
	12.541.67	F1		14.04167	Fixed	Fixed
14.04167		F2	12.541.67		Fixed	Fixed
	12.62500	F3		14.12500	Fixed	Fixed
14.12500		F4	12.62500		Fixed	Fixed
	12.70833	F5		14.20833	Fixed	Fixed
14.20833		F6	12.70833		Fixed	Fixed
	11.49167	G1		14.04167	Fixed	Fixed or steerable 2
14.04167		G2	11.49167		Fixed	Fixed or steerable 2
	11.57500	G3		14.12500	Fixed	Fixed or steerable 2
14.12500		G4	11.57500		Fixed	Fixed or steerable 2
	11.658.33	G5		14.20833	Fixed	Fixed
14.20833		G6	11.658.33		Fixed	Fixed
	12.541.67	H1		13.79167	Fixed or steerable 2	Fixed
13.79167		H2	12.541.67		Fixed or steerable 2	Fixed
	12.62500	H3		13.87500	Fixed or steerable 2	Fixed
13.87500		H4	12.62500		Fixed or steerable 2	Fixed
	12.70833	H5		13.95833	Fixed or steerable 2	Fixed
13.95833		H6	12.70833		Fixed or steerable 2	Fixed

Transponders D, F, G and H are exclusive. Only half can be active at the same time. In downlink G and D + H and F are exclusive. In uplink, H and D + F and G are exclusive.

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