TDRS 8, 9 & 10 specifications
|
Prime
contractor
|
Hughes
|
|
Platform
|
HS-601
modified
|
|
Mass
at launch
|
3180
kg
|
|
Mass
in orbit
|
1670
kg
|
|
Dry
mass
|
1500
kg
|
|
Dimension
|
stowed:
2.7 x 3.4 x 8.4 m (8 meters with the antenna folding)
|
|
Solar
array
|
21
m span
|
|
Stabilization
|
3-axis
|
|
DC
power
|
2300
W
|
|
Design
lifetime
|
11
years
|
The 2 main (east-west) antennas are steerable single-access antennas that can
simultaneously transmit and receive at S-band and either Ku- or Ka-band,
supporting dual independent two-way communication. The selection of Ku- or
Ka-band communications is done on the ground. Receive data rates are 300
megabits/second at Ku- and Ka-band, and 6 Mbps at S-band. The spacecraft
carries additional capability for Ka-band receive rates of up to 800 Mbps.
Transmit data rates are 25 Mbps for Ku- and Ka-band, and 300 kilobits/second
for S-band. In addition, an S-band phased array antenna can receive signals
from five spacecraft at once, while transmitting to one. There is no C-band on
these satellites.
NASA required to be reimbursed for failures of those 3 satellites. Contract
worth $481 million
Telemetry: 2211.5 MHz (0.5, 1 or 4 kbps)
Telemetry: 2206.5 MHz (0.5, 1 or 4 kbps)
Telemetry: 13731 MHz
Command: 2035.96 or 2031.81 MHz (2 kbps)
Command: 14786 MHz (+ 15150 MHz)