Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Between blade edge and static part
Patent
1993-04-30
1994-01-04
Look, Edward K.
Rotary kinetic fluid motors or pumps
Bearing, seal, or liner between runner portion and static part
Between blade edge and static part
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.
Lee Michael S.
Look Edward K.
Teleflex Incorporated
LandOfFree
Area ruled fan blade ends for turbofan jet engine does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Area ruled fan blade ends for turbofan jet engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Area ruled fan blade ends for turbofan jet engine will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-302823