F-111 in Detail
Part Two - Nozzles
by Jim Rotramel
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Different variants of the F-111 had different engines. The
earlier F-111A, F/RF-111C, and F-111E variants had a total of about 37,000 lbs
of thrust. The FB-111A/F-111G increased this to nearly 41,000 lbs, the F-111D to
nearly 42,000 lbs, and the F-111F to over 50,000 lbs --one third more powerful
than the original engines. When EF-111As transferred to Cannon AFB, they
were fitted with the more powerful F-111D engines. Externally, all the engines
looked identical, except for the F-111F engines, which had different nozzles.
The nozzle of the engine shut down first remained fully open,
while the other partially closed as it lost hydraulic power before it could open
The FB-111A/F-111G had a different boat tail fairing from the
other variants mounted between the engine exhausts.
The nozzle used by all models EXCEPT the F-111F.
Notice how the real petals are essentially hinged plates. Note in the
right photo how wide the burner can supports are.
Note - This is the
nozzle available from Scaledown, but their petals look a bit too much like those
of the F-model engines for my taste. Scaledown has you use the kitís afterburner
cans, which have no internal detailing. Tubes (but without internal detailing)
are included to give the afterburners depth within the fuselage.
The F-111F nozzle. Notice how
the petals are similar to those used by early F-4s and are contained within the
shell of the afterburner housing. Note in the right photo how narrow the
burner can supports are and the darker coloration of the engine when compared
with the other engines.
Note: This nozzle is available from Paragon. However,
it doesnít have any depth to the afterburner within the fuselage and the petals
are flush with the outside of the afterburner housing.
The boat tail used by all models except the FB-111A/F-111G
(left) is compared with the FB-111A/F-111G boat tail (right).
Text Copyright © 2002
Images Copyright © 2002 United States
Department of Defense and Jim Rotramel
Page Created 07 March, 2002
15 December, 2003
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