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Longeron

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longeron [′lan·jə‚rän]
(aerospace engineering)
A principal longitudinal member of the structural framework of a fuselage, nacelle, or empennage boom.

Longeron 

a major load-bearing element of many engineering structures, such as aircraft, automobiles, bridges, and ships.

Longerons run lengthwise in a structure; together with stringers, they form the longitudinal frame for the wings, fuselage, empennage, control surfaces, and ailerons in an aircraft. In automobiles and railroad cars, two longerons connected by transverse members form the frame (chassis) that supports the body, wheels, and engine. Longerons may be made of H-shaped, channeled, boxlike, or irregular sections or sheets of metal.



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as required) replacement of some of the current F-5 aircraft's dorsal longeron (the beam that runs along the top length of the aircraft providing airframe structural support) required as a result of fatigue issues.
Formers and longerons are used for building the fuselage, and spars and ribs for the wings and tail surfaces.
Using various materials such as plasma, titanium, stainless steel, and specialty alloys, the company specializes in manufacturing products including stringers, fibs, longerons, landing gear components/assemblies, bulkheads, frames, pylon components, engine mounts, and nacelle assemblies.
 
 
 
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