Eutelsat W5

EUTELSAT

Spacecraft n°:

EUTELSAT satellite n°: 26

Also called Eutelsat 3F1
Eutelsat W-1, later renamed W-5

Launch data:

Designation	27554 / 02051A
Launch date	20 Nov 2002 - 22:39 UT
Launch site	CC, SLC-37B
Launch vehicle	Delta-4M+(4,2) (#D293)
Mission	Commercial: Communications
Geostationary orbit:
Perigee / Apogee	35780 x 35790 km
Eccentricity	1,19E-04
Inclination	0.02 deg
Period	1436.04 min

The original W1 satellite was damaged during construction by a malfuncioning fire extinguishing system.
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, but was later reconstructed and completed as W5. The replacement for the W1, which was to be named W1R was reconfigured before launch and finally launched as Eurobird 1.

In 2002, Eutelsat bought the satellite for a launch just a few months later and renamed it Eutelsat W-5.

Specifications:

Prime contractor	Alcatel Space Industries (with DASA, Alenia & SS/L)
Platform	Spacebus-3000B2
Operator	EUTELSAT
Mass at launch	3170 kg
Dry mass	1900 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 yrs - still active

Location:

Date	Position	Remarks
	70.5° E
July 2010	70.54° E

Tested at 53.5°E

Beacons: 11.451091 or 11.452570 + 12.501 + 11.200 GHz

Mission details:

Lost one of two solar panels June 16, 2008.

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°

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.

Ref.: #7, #15, #226 - update: 02.11.10

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