𝗠𝗼𝗻𝗼𝗰𝗼𝗾𝘂𝗲 𝘃𝘀 𝗦𝗲𝗺𝗶-𝗺𝗼𝗻𝗼𝗰𝗼𝗾𝘂𝗲 𝗦𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲

🛫A monocoque structure uses its outer shell to support stresses and loads applied to it, whereas a semi-monocoque structure has an internal "skeleton" of supports and braces to keep its shape rigid and strong.

🛫The vast majority of pressurized aircraft are semimonocoque to help distribute stresses equally along the fuselage during flight.

🛫However, some helicopters use monocoque structure to maximize internal space in the flight compartment.

🛫Monocoque fuselage has its skin holding the skeleton structure together while the semi-monocoque has both the skin and the skeleton holding together.

🛫Semi-monocoque also has "stringers" running horizontally down the plane to help hold the frame together.

🛫The monocoque fuselage also cannot be used for airframes after a certain size (small aircraft with single engine), but the semi-monocoque has been used from single piston engines to commercial airliners.

🛫A monocoque design would also have a safety risk involved if the skin was damaged because it is the load-bearing structure.

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