Engineering English
Longeron
Aerospace Engineering · Last updated: July 30, 2026 · How this entry was written
Definition: A longeron is a longitudinal structural member in an aircraft fuselage or nacelle that runs from nose to tail and carries bending and axial loads. It provides the primary longitudinal strength and stiffness to the airframe.
Example in context
“During a routine inspection, the engineer identified a crack in the starboard longeron near frame 25 that requires immediate repair.”
“Rutin bir inceleme sırasında mühendis, 25 numaralı çerçeve yakınındaki sancak longeronunda acil onarım gerektiren bir çatlak tespit etti.”
Where engineers use it
The longeron is inspected during airframe fatigue assessments and structural health monitoring. Engineers analyze its load path to ensure the fuselage can withstand flight loads and pressurization cycles.
Synonyms: longitudinal member, longitudinal beam
Practice: can you use “Longeron” at work?
You are performing a detailed inspection on an aging aircraft fuselage and notice a small dent on the upper longeron near the cockpit. Explain the next steps to determine structural integrity.
Show a model answer
“Check the longeron for any signs of corrosion or fatigue cracking.”
“Longeron” in 21 languages
| English | Longeron |
|---|---|
| Turkish | longeron |
| French | longeron |
| German | Längsträger |
| Spanish | larguero |
| Chinese | 纵梁 |
| Arabic | عارضة طولية |
| Portuguese | longarina |
| Russian | лонжерон |
| Japanese | ロンジロン |
| Italian | longherone |
| Vietnamese | dầm dọc |
| Hindi | अनुदैर्ध्य सदस्य |
| Thai | แครงทางยาว |
| Indonesian | longeron |
| Korean | 롱저론 |
| Bengali | লঙ্গারন |
| Dutch | langsspant |
| Swedish | långbalk |
| Finnish | pitkittäispalkki |
| Ukrainian | лонжерон |
Frequently asked questions
What does Longeron mean in engineering?
A longeron is a longitudinal structural member in an aircraft fuselage or nacelle that runs from nose to tail and carries bending and axial loads. It provides the primary longitudinal strength and stiffness to the airframe. In Aerospace Engineering, the term carries a usage-frequency rating of 10/10 in the Engineering English library.
How do you pronounce Longeron?
Longeron is pronounced /ˈlɒn.ʒə.rɒn/ (IPA). The Engineering English app plays audio for the term and checks your pronunciation with speech recognition.
How is Longeron used in a sentence?
Example from an engineering context: “During a routine inspection, the engineer identified a crack in the starboard longeron near frame 25 that requires immediate repair.”
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