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Eutelsat W5


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

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.

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   33°E, Eutelsat 33B


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).

External resources


sat-index articles


Technical data


Lyngsat transponder loading


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


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

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.

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