jaydeehess
Penultimate Amazing
No it is not a lie, if you count the engines the F-4 is mostly made of steel. The engine bays alone have an extra lining of steel to protect them from the heat of the J-79s. Please do some research.
Just under 1,300 pounds of heat shielding went into the F-4 just because of the J79's heat emitting characteristics.
The sheilding is all steel?
Specifications (F-4E):
Engines: Two 17,900-pound thrust afterburning General Electric J79-GE-17 turbojets
Weight: Empty 29,535 lbs., Max Takeoff 61,651 lbs
So an empty F4E is 29,535 lbs. The supposedly all steel sheilding weighs 1300 lbs
1300/29535 X 100 = 4.4% of the total empty weight. A far cry from "most", you'll need to find a lot more steel on that aircraft U1.
ETA:::Let me help you out;
The J79 engine
Specifications (J79-GE-17)
J79 with components labeledGeneral characteristics
Type: Afterburning turbojet engine
Length: 17.4 ft (5.3 m)
Diameter: 3.2 ft (1.0 m)
Dry weight: 3,850 lb (1,750 kg)
2 X 3850 = 7700
7700 + 1300 = 9000
9000/29535 X 100 = still only 30% of the total weight
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