Patent
Integrated counterrotating turbofan
Thomas Ory Moniz,Scott Michael Carson,Robert Joseph Orlando,Ching-Pang Lee,David Glenn Cherry +4 more
TLDR
In this paper, the first stage rotor blades (58) in the low pressure turbine (24) are oriented opposite to the rotor blades(46,58) of the high and low pressure turbines (22,24) for counterrotation.Abstract:
A turbofan engine (10) includes a fan (14), compressor (18), combustor (20), single-stage high pressure turbine (22), and low pressure turbine (24) joined in serial flow communication. First stage rotor blades (58) in the low pressure turbine (24) are oriented oppositely to the rotor blades (46) in the high pressure turbine (22) for counterrotation. First stage stator vanes (52) in the low pressure turbine (24) have camber and twist for carrying swirl directly between the rotor blades (46,58) of the high and low pressure turbines (22,24).read more
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Patent
Double-body gas turbine engine provided with an inter-shaft bearing
TL;DR: In this article, a double-body gas turbine engine with a low-pressure body LP and a high-pressure engine HP, rotatably mounted about a single shaft in a stationary casing, is described.
Patent
Gas turbine engine with high speed low pressure turbine section
TL;DR: In this paper, the authors defined a quantity defined by the exit area of a low-pressure turbine multiplied by the square of the low pressure turbine rotational speed compared to the same parameters for the high pressure turbine, at a ratio between about 0.5 and about 1.5.
Patent
Counter-rotating low pressure turbine with gear system mounted to mid turbine frame
Gabriel L. Suciu,Brian D. Merry +1 more
TL;DR: In this paper, a gear system couples the inner turbine rotor to the shaft and is configured to rotate the inner set of blades at a faster speed than the outer set of turbines.
Patent
Power transmission among shafts in a turbine engine
Andrew D. Copeland,Rob Jarrell +1 more
TL;DR: In this paper, a method of transmitting power among a plurality of shafts in a turbine engine is described, as well as the turbine engine for practicing the method, which includes a tower shaft operably engaged with both of the low pressure shaft and the high pressure shaft.
Patent
Dual clutch arrangement
TL;DR: In this paper, a dual-clutch arrangement for turbine engines is described, which includes a first and a second input rotatable member, and an output rotatable motor to drive the turbine engine.
References
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Patent
Aircraft engine with inter-turbine engine frame supported counter rotating low pressure turbine rotors
Jorge F. Seda,Lawrence W. Dunbar,Philip R. Gliebe,Peter N. Szucs,John B. Lawrenceburg Brauer,James Edward Johnson,Thomas Ory Moniz,Gregory T. Steinmetz +7 more
TL;DR: In this paper, an aircraft gas turbine engine assembly includes an inter-turbine frame axially located between high and low pressure turbines, which is connected by a plurality of circumferentially spaced apart struts.
Patent
Aircraft engine with inter-turbine engine frame
TL;DR: An aircraft engine turbine frame includes a first structural ring, a second structural ring disposed co-axially with and radially spaced inwardly of the structural ring about a centerline axis, and a plurality of circumferentially spaced apart struts extend between the first and second structural rings as mentioned in this paper.
Patent
Methods and apparatus for assembling gas turbine engines
TL;DR: In this paper, a gas turbine engine is assembled by forming at least one substantially elliptically-shaped opening within a flange (72) extending from a fan disk (40), inserting a fastener including a first body portion, a second body portion and an anti-rotation stop (126).
Patent
Counterrotating turbine support assembly
TL;DR: In this article, a counterrotating turbine support assembly includes outer and inner rotors having respective inner blades disposed in an outer casing, and a rear frame is disposed axially aft of the rotors and is fixedly joined to the outer casing.
Patent
Rotatable turbine frame
John J. Green Valley Country Club Apts. Ciokajlo,Ambrose Andreas Hauser,Samuel Henry Davison +2 more
TL;DR: A rotatable turbine frame (48,50) includes annular outer and inner bands (48b,50b) having a plurality of circumferentially spaced apart struts (48a,50a) extending therebetween as discussed by the authors.