Area ruled fan blade ends for turbofan jet engine

Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Between blade edge and static part

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415914, 416196R, F01D 2524

Patent

active

052755312

ABSTRACT:
An axial flow transonic turbofan jet engine includes a hub (26) from which radiate a plurality of rotor blades (50). A casing (12) surrounds and shrouds the rotor blades (50). Part-span dampers (56) are located between adjacent rotor blades (50) in an annular pattern to stiffen the elongated rotor blades (50) during operation. The distal tips (54) of the rotor blades (50) are convexed and spin within a rub strip (62) embedded within the casing (12). The rub strip (62) includes an annularly troughed contour (60) to closely conform with the convex tips (54) of the rotor blades (50). The hub (26) may also include an annularly troughed contour (60) formed along the roots (52) of the rotor blades (50). The annularly troughed contours (60) in the hub (26) and in the casing (12) are radially aligned with the part-span dampers (56) to reduce drag between the casing (12) and the hub (26) caused by the part-span dampers (56) at transonic speeds.

REFERENCES:
patent: Re32737 (1988-08-01), Ortolano
patent: 2772854 (1956-12-01), Anxionnaz
patent: 2874922 (1959-02-01), Whitcomb
patent: 3806067 (1974-04-01), Kutney
patent: 3837761 (1974-09-01), Brown
patent: 3934410 (1976-01-01), Williams
patent: 4012165 (1977-03-01), Kraig
patent: 4086022 (1978-04-01), Freeman et al.
patent: 4171183 (1979-10-01), Cornell et al.
patent: 4566700 (1986-01-01), Shiembob
patent: 4677828 (1987-07-01), Matthews
patent: 5056738 (1991-10-01), Mercer et al.

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