Helicopter rotor

https://www.wikidata.org/wiki/Q1343028

Field Hierarchy

Parent
Physics 31.7M papers	Engineering 23.9M papers	Quantum mechanics 13.1M papers	Mechanical engineering 5.3M papers
Electrical engineering 4.7M papers	Acoustics 2.8M papers	Vibration 417k papers	Rotor (electric) 136k papers
Current
Helicopter rotor 12.5k papers
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History