The scientific tourist #255 — under the skin

An Apollo lunar module prototype on display at the Kansas Cosmosphere:

Under the skin

Looking at this piece of history, it’s amazing that its builders could get this to hold an atmosphere for its occupants — but this is very nearly the same design that flew on the Apollo lunar missions.  The only significant difference is the shape of the forward hatch — this one has a nearly-round shape (for commonality with the docking port hatch), while the as-flown forward hatch is roughly square.  It turned out that the round hatch didn’t give a suited astronaut enough room to pass through with his life support backpack on.

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