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    • 9. 发明公开
    • High pitch-to-chord turbine airfoils
    • Turbinenschaufel mit hohemVerhältnisvon Turbinensteigung zurSehnenlänge
    • EP2383434A2
    • 2011-11-02
    • EP11250416.2
    • 2011-04-01
    • United Technologies Corporation
    • Praisner, Thomas J.Estes, Matthew B.Jurek, Renee J.
    • F01D5/14
    • F01D5/141F05D2220/3215Y02T50/673
    • A low pressure turbine engine component (18) for use in an engine (10), for propelling a vehicle such as an aircraft is formed by a disk portion (20) and a plurality of low pressure turbine blades (21) extending outwardly from the disk portion (20). Each of the low pressure turbine blades (21) has an airfoil portion (25) with an axial chord (31) length and a trailing edge (29). The low pressure turbine blades (21) are spaced apart so that there is a pitch-to-chord ratio greater than 1.4, wherein the pitch is a distance (35) between the trailing edges (29) of adjacent ones of the low pressure turbine blades (21) and the chord is the axial chord (31) length of the blades (21).
    • 用于推进诸如飞行器的车辆的用于发动机(10)的低压涡轮发动机部件(18)由盘部分(20)和多个从所述飞行器向外延伸的多个低压涡轮机叶片(21)形成, 盘部分(20)。 每个低压涡轮叶片(21)具有具有轴向弦(31)长度和后缘(29)的翼型部分(25)。 所述低压涡轮机叶片(21)间隔开,使得所述桨距对弦比大于1.4,其中间距是相邻的低压涡轮机的后缘(29)之间的距离(35) 叶片(21)并且弦是叶片(21)的轴向弦(31)长度。