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Semi-monocoque structure inside an aircraft's rear fuselage ARV Super2 with semi-monocoque fuselage. The term semi-monocoque or semimonocoque refers to a stressed shell structure that is similar to a true monocoque, but which derives at least some of its strength from conventional reinforcement. Semi-monocoque construction is used for, among ...
The Gulfstream G400, G500, and G600 (GVII [9]) are American twin-engine business jets designed and produced by Gulfstream Aerospace. The aircraft are designated Gulfstream GVII-G500 and GVII-G600 in their type certificate. [9] The two larger models were unveiled on October 14, 2014 and the smaller G400 was unveiled on October 4, 2021.
By contrast, a semi-monocoque is a hybrid combining a tensile stressed skin and a compressive structure made up of longerons and ribs or frames. [3] Other semi-monocoques, not to be confused with true monocoques, include vehicle unibodies, which tend to be composites, and inflatable shells or balloon tanks, both of which are pressure stabilised.
This structure is typically considered to include the fuselage, undercarriage, empennage and wings, and excludes the propulsion system. [2] Airframe design is a field of aerospace engineering that combines aerodynamics, materials technology and manufacturing methods with a focus on weight, strength and aerodynamic drag, as well as reliability ...
Both monocoque and semi-monocoque are referred to as "stressed skin" structures as all or a portion of the external load (i.e. from wings and empennage, and from discrete masses such as the engine) is taken by the surface covering. In addition, all the load from internal pressurization is carried (as skin tension) by the external skin.
There is some overlap between monocoque, semi-monocoque (stressed skin), and rigid frame structures, depending on the proportion of the structural rigidity contributed by the skin. In a monocoque design, the skin assumes all or most of the stress and the structure has fewer discrete framing elements, sometimes including only longitudinal or ...
The fuselage is actually a hull, which makes use of a semi-monocoque light alloy construction; according to aerospace publication Flight International, the hull design was "reminiscent of flying-boat engineering". [5] The main cabin lacks any transverse bracing, except for a single bulkhead between the cockpit and cabin.
The YF-17 was primarily constructed of aluminum, in conventional semi-monocoque stressed-skin construction, though over 900 lb (408 kg) of its structure comprised graphite/epoxy composite. The small nose contained a simple ranging-radar.