公开(公告)号：US06318070B1

公开(公告)日：2001-11-20

申请号：US09517937

申请日：2000-03-03

申请人： Nancy M. Rey ,  Robin M. Miller ,  Thomas G. Tillman ,  Robert M. Rukus ,  John L. Kettle ,  James R. Dunphy ,  Zaffir A. Chaudhry ,  David D. Pearson ,  Kenneth C. Dreitlein ,  Constantino V. Loffredo ,  Thomas A. Wynosky

发明人： Nancy M. Rey ,  Robin M. Miller ,  Thomas G. Tillman ,  Robert M. Rukus ,  John L. Kettle ,  James R. Dunphy ,  Zaffir A. Chaudhry ,  David D. Pearson ,  Kenneth C. Dreitlein ,  Constantino V. Loffredo ,  Thomas A. Wynosky

IPC分类号： F02K302

CPC分类号： F02K1/1207 ,  F03G7/065 ,  F05D2300/505 ,  Y02T50/671 ,  Y10T74/20

摘要： A gas turbine engine includes a variable area nozzle having a plurality of flaps. The flaps are actuated by a plurality of actuating mechanisms driven by shape memory alloy (SMA) actuators to vary fan exist nozzle area. The SMA actuator has a deformed shape in its martensitic state and a parent shape in its austenitic state. The SMA actuator is heated to transform from martensitic state to austenitic state generating a force output to actuate the flaps. The variable area nozzle also includes a plurality of return mechanisms deforming the SMA actuator when the SMA actuator is in its martensitic state.

摘要翻译： 燃气涡轮发动机包括具有多个翼片的可变区域喷嘴。 翼片由形状记忆合金（SMA）致动器驱动的多个致动机构致动，以改变风扇存在的喷嘴面积。 SMA致动器在其马氏体状态下具有变形的形状，并且其奥氏体状态具有母体形状。 SMA致动器被加热以从马氏体状态转变为奥氏体状态，产生力输出以致动翼片。 可变区域喷嘴还包括当SMA致动器处于其马氏体状态时使SMA致动器变形的多个返回机构。

公开(公告)号：US4392894A

公开(公告)日：1983-07-12

申请号：US190137

申请日：1980-09-24

申请人： David D. Pearson ,  Frank D. Lemkey ,  Bernard H. Kear

发明人： David D. Pearson ,  Frank D. Lemkey ,  Bernard H. Kear

IPC分类号： C30B1/02 ,  C22C1/02 ,  C22C19/00 ,  C22C19/03 ,  C22F20060101 ,  C22F1/10 ,  C30B11/00 ,  C30B21/02 ,  C30B29/52

CPC分类号： C22F1/10 ,  C22C19/007 ,  C30B11/00 ,  C30B29/52

摘要： A high strength nickel base superalloy having a novel microstructure is described. The article consists of a gamma matrix containing a oriented gamma prime second phase having a plate or rod form. This noncuboidal gamma prime phase is produced by aging solution treated material under an applied stress. When this process is applied to a certain class of superalloys which are rich in refractory elements, the resultant structure provides exceptional resistance to creep at elevated temperatures.

摘要翻译： 描述了具有新颖微结构的高强度镍基超级合金。 该制品由含有具有板或棒形式的取向γ'第二相的γ基质组成。 这种非爆破γ'相是在施加的应力下通过老化溶液处理的材料产生的。 当将该方法应用于富含难熔元素的某些类型的超级合金时，所得结构在高温下提供卓越的抗蠕变性。

公开(公告)号：US4328045A

公开(公告)日：1982-05-04

申请号：US177047

申请日：1980-08-11

申请人： David D. Pearson ,  Frank D. Lemkey ,  Bernard H. Kear

发明人： David D. Pearson ,  Frank D. Lemkey ,  Bernard H. Kear

IPC分类号： C30B1/02 ,  C22C1/02 ,  C22C19/00 ,  C22C19/03 ,  C22F20060101 ,  C22F1/10 ,  C30B11/00 ,  C30B21/02 ,  C30B29/52

CPC分类号： C22F1/10 ,  C22C19/007 ,  C30B11/00 ,  C30B29/52

摘要： An alloy composition coasting scheme and specific heat treatment process are described for the production of directionally solidified single crystal articles which have exceptional properties. The alloy is based on the Ni-Al-Mo system, preferably with additions of Ta. The process for producing the article inclused directional solidification at a high rate to produce a fine dendritic microstructure. A combined homogenizing and solution treatment is performed to provide a unique chemically homogeneous single phase microstructure. This homogeneous article is rapidly quenched and then aged at an intermediate temperature to develop a controlled uniform distribution of fine gamma prime phase particles.

摘要翻译： 描述了一种具有特殊性质的定向凝固单晶制品的合金组成惯性方案和比热处理方法。 该合金基于Ni-Al-Mo体系，优选添加Ta。 制造该制品的方法包括高速定向凝固以产生细的树枝状微观结构。 进行组合均质和固溶处理以提供独特的化学均匀的单相微结构。 将这种均匀的制品快速骤冷，然后在中间温度下老化以形成受控制的均匀分布的精细γ相相颗粒。

公开(公告)号：US07683524B2

公开(公告)日：2010-03-23

申请号：US11215981

申请日：2005-08-31

申请人： David D. Pearson ,  Jeffrey L. Cavaco ,  Jacqueline Roche

发明人： David D. Pearson ,  Jeffrey L. Cavaco ,  Jacqueline Roche

IPC分类号： H01L41/08

CPC分类号： G02B26/06 ,  H01L27/20 ,  H01L41/083

摘要： A multichannel, surface parallel, zonal transducer system includes a membrane and a compound transducer mounted on the membrane, the compound transducer including a plurality of transducer elements extending generally parallel to the membrane, interconnected in a closed network and individually addressable.

摘要翻译： 多通道，表面平行的纬向换能器系统包括安装在膜上的膜和复合换能器，复合换能器包括大致平行于膜延伸的多个换能器元件，在闭合网络中互连并且可单独寻址。

公开(公告)号：US06299410B1

公开(公告)日：2001-10-09

申请号：US09502443

申请日：1999-02-23

申请人： Gary R. Hilbert ,  David D. Pearson ,  Edward F. Crawley

发明人： Gary R. Hilbert ,  David D. Pearson ,  Edward F. Crawley

IPC分类号： F01D500

CPC分类号： F01D5/16 ,  F16F15/005 ,  Y02T50/672 ,  Y02T50/673 ,  Y10S416/50

摘要： A method and apparatus reduces the magnitude of vibratory strain in a turbomachine component that experiences high steady state strain by, in the case of a passive embodiment, coupling a mechanical-to-electromagnetic energy converter to an interior and/or exterior surface of the component, and/or embedding the energy converter within the component, and by, in the case of an active embodiment, coupling a mechanical-to-electromagnetic energy converter to an interior and/or exterior surface of the component.

摘要翻译： 一种方法和装置通过在无源实施例中将机械电磁能量转换器耦合到部件的内部和/或外部表面而减小经历高稳态应变的涡轮机组件中的振动应变的大小 ，和/或将能量转换器嵌入到部件内，并且在主动实施例的情况下，将机械电磁能量转换器耦合到部件的内部和/或外表面。

公开(公告)号：US4288259A

公开(公告)日：1981-09-08

申请号：US966416

申请日：1978-12-04

申请人： David D. Pearson ,  Franklin D. Lemkey

发明人： David D. Pearson ,  Franklin D. Lemkey

IPC分类号： C22C19/03 ,  C30B21/02

CPC分类号： C22C19/03 ,  C30B21/02

摘要： This disclosure relates to directionally solidified articles produced from a eutectic alloy in the nickel-aluminum-molybdenum system with tantalum added. The articles have a microstructure consisting of a ductile matrix phase of gamma prime containing a fibrous reinforcing second phase of alpha Mo. The nominal composition of the base alloy is 6.9 weight percent aluminum, 15.2 weight percent tantalum, 18.5 weight percent molybdenum, balance nickel. The directionally solidified alloy articles of the invention are characterized by exceptional mechanical properties combined with good oxidation resistance and reasonable sulfidation resistance at elevated temperatures.

摘要翻译： 本公开内容涉及由添加有钽的镍 - 钼 - 钼系统中的共晶合金制成的定向凝固制品。 这些制品具有由包含αMo的纤维增强第二相的γ'的延性基体相组成的微结构。基础合金的标称组成为6.9重量％的铝，15.2重量％的钽，18.5重量％的钼，余量的镍。 本发明的定向凝固的合金制品的特征在于在高温下具有优异的机械性能以及良好的抗氧化性和合理的耐硫化性。