"alpha hinge" meaning in English

{
  "forms": [
    {
      "form": "alpha hinges",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "alpha hinge (plural alpha hinges)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Aeronautics",
          "orig": "en:Aeronautics",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1953, Daniel Otto Dommasch, Elements of Propeller and Helicopter Aerodynamics, page 129",
          "text": "Similarly, as a blade with an alpha hinge lags through an angle §, ...",
          "type": "quotation"
        },
        {
          "ref": "1958, Aviation Week and Space Technology - Volume 69, page 226",
          "text": "When rotor goes to autorotation, an inclined alpha hinge provides automatic change of blade pitch to three degrees as the shaft stops rotating.",
          "type": "quotation"
        },
        {
          "ref": "2013, Wayne Johnson, Rotorcraft Aeromechanics, page 218",
          "text": "When flap and lag hinge inclination was introduced on the autogyro rotors, the inboard (flap) hinge was designated the “delta hinge,” and the outboard (lag) hinge designated the “alpha hinge.”",
          "type": "quotation"
        }
      ],
      "glosses": [
        "On rotorcraft, a hinge perpendicular to the plane of rotor rotation about which the blades trail or lag."
      ],
      "id": "en-alpha_hinge-en-noun-yiy~KrdR",
      "links": [
        [
          "aeronautics",
          "aeronautics"
        ],
        [
          "rotorcraft",
          "rotorcraft"
        ],
        [
          "hinge",
          "hinge"
        ]
      ],
      "raw_glosses": [
        "(aeronautics) On rotorcraft, a hinge perpendicular to the plane of rotor rotation about which the blades trail or lag."
      ],
      "topics": [
        "aeronautics",
        "aerospace",
        "business",
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "alpha hinge"
}

{
  "forms": [
    {
      "form": "alpha hinges",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "alpha hinge (plural alpha hinges)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "en:Aeronautics"
      ],
      "examples": [
        {
          "ref": "1953, Daniel Otto Dommasch, Elements of Propeller and Helicopter Aerodynamics, page 129",
          "text": "Similarly, as a blade with an alpha hinge lags through an angle §, ...",
          "type": "quotation"
        },
        {
          "ref": "1958, Aviation Week and Space Technology - Volume 69, page 226",
          "text": "When rotor goes to autorotation, an inclined alpha hinge provides automatic change of blade pitch to three degrees as the shaft stops rotating.",
          "type": "quotation"
        },
        {
          "ref": "2013, Wayne Johnson, Rotorcraft Aeromechanics, page 218",
          "text": "When flap and lag hinge inclination was introduced on the autogyro rotors, the inboard (flap) hinge was designated the “delta hinge,” and the outboard (lag) hinge designated the “alpha hinge.”",
          "type": "quotation"
        }
      ],
      "glosses": [
        "On rotorcraft, a hinge perpendicular to the plane of rotor rotation about which the blades trail or lag."
      ],
      "links": [
        [
          "aeronautics",
          "aeronautics"
        ],
        [
          "rotorcraft",
          "rotorcraft"
        ],
        [
          "hinge",
          "hinge"
        ]
      ],
      "raw_glosses": [
        "(aeronautics) On rotorcraft, a hinge perpendicular to the plane of rotor rotation about which the blades trail or lag."
      ],
      "topics": [
        "aeronautics",
        "aerospace",
        "business",
        "engineering",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "alpha hinge"
}