GEO communications satellite payload panel
Filled silicone gasket
R
contact
=
0.05 K/W
Embedded heat pipes
R
pipe
=
0.00182 K/W
q
=
220 W
Second-surface mirror, ε 0.80
R
rad
=
1.15 K/W
MLI blanket, ε* 0.02
R
rad
=
26 K/W
Panel honeycomb
C
pnl
=
18000 J/K
TWTA waste heat
P
twta
=
220 W
Earth IR
q
eir
=
12 W
Survival heater (30 W when on)
P
htr
=
0 W
Absorbed solar
q
sol
=
45 W
TWTA baseplate
T
twta
=
78 °C
Equipment panel
T
pnl
=
45 °C
Radiator
T
rad
=
22 °C
Deep space
T
space
=
-269 °C