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    • 2. 发明申请
    • CONVERTIBLE FAN ENGINE
    • 可换风扇发动机
    • WO2011038213A1
    • 2011-03-31
    • PCT/US2010/050178
    • 2010-09-24
    • GENERAL ELECTRIC COMPANYJOHNSON, James, EdwardPOWELL, Brandon, Flowers
    • JOHNSON, James, EdwardPOWELL, Brandon, Flowers
    • F02K3/077F02K3/075F01D17/16F02C7/042
    • F02K3/075F01D17/162F02C7/042F02C9/18F02C9/20F02K3/077F05D2220/327
    • A gas turbine engine (576) having a convertible fan system is disclosed, having a fan system (501) with a front stage fan rotor (506) and an aft fan rotor (542) coupled to a low-pressure turbine (583), a core (578) having a compressor (579) coupled to a high-pressure turbine (581), an annular inner bypass passage. (571) and an annular outer bypass passage (572). The aft fan rotor (542) has a row of aft fan blades (544) having an arcuate splitter (547 that forms a portion of an inner flow passage (573) and an outer flow passage (574) wherein the aft fan blade (544) pressurizes an inner flow (563) and an outer flow (564) and wherein the fan tip pressure ratio can be changed while the air flow into the front stage fan rotor (506) is held substantially constant. A method of operating a gas turbine engine (576) having a convertible fan system is disclosed.
    • 公开了一种具有可转换风扇系统的燃气涡轮发动机(576),具有带有前级风扇转子(506)的风扇系统(501)和与低压涡轮机(583)耦合的后风扇转子(542) 具有联接到高压涡轮机(581)的压缩机(579)的核心(578),环形内部旁路通道。 (571)和环形外部旁路通道(572)。 后风扇转子(542)具有一排后风扇叶片(544),其具有弓形分流器(547,其形成内部流动通道573的一部分)和外部流动通道(574),其中后部风扇叶片(544 )对内部流(563)和外部流(564)进行加压,并且其中当进入前级风扇转子(506)的气流保持基本恒定时,可以改变风扇叶尖压力比。 公开了具有可转换风扇系统的发动机(576)。
    • 4. 发明申请
    • METHOD OF OPERATING ADAPTIVE CORE ENGINES
    • 运行自适应核心发动机的方法
    • WO2011038196A1
    • 2011-03-31
    • PCT/US2010/050149
    • 2010-09-24
    • GENERAL ELECTRIC COMPANYGIFFIN, Rollin, GeorgePOWELL, Brandon, FlowersHARRINGTON, MarkJOHNSON, James, Edward
    • GIFFIN, Rollin, GeorgePOWELL, Brandon, FlowersHARRINGTON, MarkJOHNSON, James, Edward
    • F02C3/13F02K3/075F04D27/02
    • F02K3/075F05D2220/323
    • A method of operating a compressor in an adaptive core engine is disclosed. The method comprises the steps of operating a front block compressor (30) to increase pressure of a fluid to a first pressure ratio in a high-power mode operation; operating a rear block compressor (40) coupled to the front block compressor such that the front block compressor and the rear block compressor operate at the same physical speed; closing a rear block stator vane (142) located axially forward from the rear block compressor such that the flow of the fluid into the rear block compressor is substantially cut off; and keeping a blocker door (153) opened such that substantially all of the fluid pressurized by the front block compressor flows through a bypass passage during the high-power mode operation. The operation may be transitioned from the high-power mode to a low-power mode by opening a rear block stator such that the rear block compressor receives at least a portion of the fluid flowing from the front block compressor and maintains an overall engine pressure ratio.
    • 公开了一种在自适应核心引擎中操作压缩机的方法。 该方法包括以下步骤:在高功率模式操作中操作前部块压缩机(30)以将流体的压力增加到第一压力比; 操作联接到前部块压缩机的后部块式压缩机(40),使得前部块式压缩机和后部块式压缩机以相同的物理速度运行; 关闭从后块式压缩机轴向向前定位的后块定子叶片(142),使得流入后块式压缩机的流体基本上被切断; 并且保持阻塞门(153)打开,使得在大功率模式操作期间,由前阻塞式压缩机加压的基本上所有的流体都流过旁通通道。 操作可以通过打开后挡块定子从大功率模式转换到低功率模式,使得后块式压缩机接收从前块式压缩机流出的流体的至少一部分,并保持总体发动机压力比 。