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Low hub-to-tip ratio fan for a turbofan gas turbine engine
Low hub-to-tip ratio fan for a turbofan gas turbine engine
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机译：用于涡轮风扇燃气涡轮发动机的低轮毂对叶尖比的风扇
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摘要
A fan for a turbofan gas turbine engine, the fan comprising a rotor hub and a plurality of radially extending fan blades integral with the hub to form an integrally bladed rotor. Each fan blade defines a leading edge. A hub radius (RHUB) is the radius of the leading edge at the hub relative to a centerline of the fan. A tip radius (RTIP) is the radius of the leading edge at a tip of the fan blade relative to the centerline of the fan. The ratio of the hub radius to the tip radius (RHUB/RTIP) is at least less than 0.29. In a particular embodiment, this ratio is between 0.25 and 0.29. In another particular embodiment, this ratio is less than or equal to 0.25.
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机译：用于涡轮风扇燃气涡轮发动机的风扇，该风扇包括转子轮毂和与该轮毂成一体的多个径向延伸的风扇叶片，以形成整体叶片式转子。每个风扇叶片都有一个前缘。轮毂半径（R HUB ）是轮毂上前缘相对于风扇中心线的半径。尖端半径（R TIP ）是相对于风扇中心线的风扇叶片尖端的前缘半径。轮毂半径与尖端半径之比（R HUB / R TIP ）至少小于0.29。在特定的实施方案中，该比率在0.25至0.29之间。在另一特定实施例中，该比率小于或等于0.25。
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