| 摘要 |
A damper is disclosed for damping the rotational speed of an article that is coupled to, and rotates about the longitudinal axis of, the damper. The illustrative damper comprises: a thermal compensator that, in response to the ambient temperature, linearly expands and contracts; a blade that defines a first chamber and a second chamber within the damper; an orifice between the first chamber and the second chamber, wherein the orifice is operatively coupled to the thermal compensator such that the orifice (i) decreases when the thermal compensator expands and (ii) increases when the thermal compensator contracts; and a fluid that fills the first chamber and the second chamber, wherein the fluid flows through the orifice when the blade rotates about a longitudinal axis of the apparatus, and wherein the rate of flow of the fluid depends on the size of the orifice. The rotational speed available from the damper depends at least in part on the rate of flow of the fluid through the orifice. |
