Thermal Insulation Brackets (Indoors)

For certain static tests or when installed on a Saturn V S-IC (first) stage for launch, the F-1 engine was clad in thermal insulation, preventing recirculating gases from damaging the engines. While the thrust chamber was wrapped in blankets, the forward end of the engine had a "cocoon" of insulation around it. This cocoon was supported by brackets mounted on the engine around the turbopump and propellant high-pressure ducts.

Relatively few engines are displayed with the thermal insulation brackets (although F-5036 and F-4023, both displayed at Marshall Space Flight Center, retain their brackets). F-6090, the engine chosen for disassembly, also had these brackets.

These brackets were removed during the disassembly process and were stored near the thrust chamber during my visit, but were later moved outdoors.