Overall view of the forward end of the 1/4 F-1 engine. There are a number of
items to note:
- The engine lacks an interface panel, a turbopump, and propellant
high-pressure ducts.
- There are two ID plates on the exterior of the
combustion chamber.
- This is a later engine, as indicated by the presence of tabs and studs
used to mount the engine's thermal insulation on the surface of the
thrust chamber.
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