公开(公告)号：US09741922B2

公开(公告)日：2017-08-22

申请号：US14571823

申请日：2014-12-16

Applicant: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration

Inventor： William K. Wilkie ,  Robert G. Bryant ,  Christopher S. Lynch

IPC: H01L41/09 ,  H01L41/08 ,  B64C3/48 ,  B64C27/72 ,  F02C7/042 ,  G02B26/08

CPC classification number: H01L41/09 ,  B64C3/48 ,  B64C27/72 ,  B64C2027/7211 ,  F02C7/042 ,  F05D2260/407 ,  F05D2300/603 ,  G02B26/0858 ,  H01L41/082 ,  H01L41/183 ,  H01L41/1876 ,  Y02T50/672

Abstract: A self-latching piezocomposite actuator includes a plurality of shape memory ceramic fibers. The actuator can be latched by applying an electrical field to the shape memory ceramic fibers. The actuator remains in a latched state/shape after the electrical field is no longer present. A reverse polarity electric field may be applied to reset the actuator to its unlatched state/shape. Applied electric fields may be utilized to provide a plurality of latch states between the latched and unlatched states of the actuator. The self-latching piezocomposite actuator can be used for active/adaptive airfoils having variable camber, trim tabs, active/deformable engine inlets, adaptive or adjustable vortex generators, active optical components such as mirrors that change shapes, and other morphing structures.

公开(公告)号：US09739411B1

公开(公告)日：2017-08-22

申请号：US14818799

申请日：2015-08-05

Applicant: The United States of America, as represented by the Administrator of the National Aeronautics and Space Administration

Inventor： Shaun Azimi ,  Darby Magruder ,  Justin Ridley ,  Anthony Lapp ,  Jodi Graf ,  Ross Pettinger

IPC: F16L55/38 ,  F17D5/00 ,  F16L55/40 ,  B65G51/04 ,  G01M3/00

CPC classification number: F16L55/38 ,  B65G51/04 ,  B65G2201/0291 ,  F16L55/40 ,  F16L55/46 ,  F16L2101/30 ,  F17D3/08 ,  F17D5/00 ,  F17D5/06 ,  G01M3/005

Abstract: A system and method is provided for traversing inside one or more pipes. In an embodiment, a fluid is injected into the one or more pipes thereby promoting a fluid flow. An inspection device is deployed into the one or more pipes at least partially filled with a flowing fluid. The inspection device comprises a housing wherein the housing is designed to exploit the hydrokinetic effects associated with a fluid flow in one or more pipes as well as maneuver past a variety of pipe configurations. The inspection device may contain one or more sensors capable of performing a variety of inspection tasks.

公开(公告)号：US09734932B2

公开(公告)日：2017-08-15

申请号：US14253317

申请日：2014-04-15

Applicant: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration

Inventor： Keith L. Gordon ,  Jin Ho Kang ,  Cheol Park ,  Peter T. Lillehei ,  Joycelyn S. Harrison

IPC: H01B1/12 ,  G02F1/00 ,  H01B3/38 ,  C08G73/18 ,  C08L79/04 ,  H01B3/12

CPC classification number: H01B3/38 ,  C08G73/18 ,  C08L79/04 ,  G02F1/0009 ,  G02F2202/30 ,  G02F2202/42 ,  H01B1/12 ,  H01B3/12

Abstract: Metamaterials or artificial negative index materials (NIMs) have generated great attention due to their unique and exotic electromagnetic properties. One exemplary negative dielectric constant material, which is an essential key for creating the NIMs, was developed by doping ions into a polymer, a protonated poly (benzimidazole) (PBI). The doped PBI showed a negative dielectric constant at megahertz (MHz) frequencies due to its reduced plasma frequency and an induction effect. The magnitude of the negative dielectric constant and the resonance frequency were tunable by doping concentration. The highly doped PBI showed larger absolute magnitude of negative dielectric constant at just above its resonance frequency than the less doped PBI.

公开(公告)号：US20170221648A1

公开(公告)日：2017-08-03

申请号：US15010884

申请日：2016-01-29

Applicant: USA as Represented by the Administrator of the National Aeronautics and Space Administration

Inventor： Terry D. Rolin ,  Curtis W. Hill

IPC: H01G11/84 ,  C04B35/626 ,  C04B35/638 ,  C04B35/63 ,  C04B35/622 ,  C04B35/64 ,  H01G11/56 ,  C04B35/628

CPC classification number: H01G11/84 ,  C03C8/20 ,  C04B35/4682 ,  C04B35/62222 ,  C04B35/6262 ,  C04B35/6264 ,  C04B35/6265 ,  C04B35/6268 ,  C04B35/62807 ,  C04B35/62813 ,  C04B35/62884 ,  C04B35/62897 ,  C04B35/6303 ,  C04B35/6316 ,  C04B35/632 ,  C04B35/638 ,  C04B35/64 ,  C04B2235/3215 ,  C04B2235/3217 ,  C04B2235/3236 ,  C04B2235/3418 ,  C04B2235/36 ,  C04B2235/365 ,  C04B2235/5445 ,  C04B2235/6026 ,  C04B2235/6562 ,  C04B2235/6567 ,  C04B2235/6584 ,  C04B2235/6586 ,  C04B2235/768 ,  C04B2235/96 ,  H01G4/1227 ,  H01G11/56

Abstract: An ink of the formula: 60-80% by weight BaTiO3 particles coated with SiO2; 5-50% by weight high dielectric constant glass; 0.1-5% by weight surfactant; 5-25% by weight solvent; and 5-25% weight organic vehicle. Also a method of manufacturing a capacitor comprising the steps of: heating particles of BaTiO3 for a special heating cycle, under a mixture of 70-96% by volume N2 and 4-30% by volume H2 gas; depositing a film of SiO2 over the particles; mechanically separating the particles; incorporating them into the above described ink formulation; depositing the ink on a substrate; and heating at 850-900° C. for less than 5 minutes and allowing the ink and substrate to cool to ambient in N2 atmosphere. Also a dielectric made by: heating particles of BaTiO3 for a special heating cycle, under a mixture of 70-96% by volume N2 and 4-30% by volume H2 gas; depositing a film of SiO2 over the particles; mechanically separating the particles; forming them into a layer; and heating at 850-900° C. for less than 5 minutes and allowing the layer to cool to ambient in N2 atmosphere.

公开(公告)号：US09712250B2

公开(公告)日：2017-07-18

申请号：US14550028

申请日：2014-11-21

Applicant: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration

Inventor： Diego F. Pierrottet ,  Larry B. Petway ,  Farzin Amzajerdian ,  Bruce W. Barnes ,  George E. Lockard ,  Glenn D. Hines

IPC: H04B10/00 ,  H04B10/556 ,  H04B10/548 ,  G01S17/32 ,  G01S7/491 ,  H04B10/2575

CPC classification number: H04B10/5563 ,  G01S7/4911 ,  G01S17/32 ,  H04B10/2575 ,  H04B10/548

Abstract: A system for generating a frequency modulated linear laser waveform includes a single frequency laser generator to produce a laser output signal. An electro-optical modulator modulates the frequency of the laser output signal to define a linear triangular waveform. An optical circulator passes the linear triangular waveform to a band-pass optical filter to filter out harmonic frequencies created in the waveform during modulation of the laser output signal, to define a pure filtered modulated waveform having a very narrow bandwidth. The optical circulator receives the pure filtered modulated laser waveform and transmits the modulated laser waveform to a target.

公开(公告)号：US09695531B2

公开(公告)日：2017-07-04

申请号：US14206292

申请日：2014-03-12

Applicant: The United States of America as Represented by the Administrator of the National Aeronautics and Space Administration

Inventor： Godfrey Sauti ,  Jae-Woo Kim ,  Emilie J. Siochi ,  Kristopher E. Wise

IPC: B29B15/10 ,  B29C70/12 ,  B82Y30/00 ,  B82Y40/00 ,  C01B31/02 ,  C08J5/24 ,  D04H1/587 ,  C01B31/04 ,  D03D15/00 ,  B29C55/00 ,  D04H1/64 ,  D04H1/74 ,  B29K105/16

CPC classification number: D04H1/587 ,  B29B15/10 ,  B29C55/005 ,  B29C70/12 ,  B29K2005/00 ,  B29K2105/162 ,  B29K2105/167 ,  B82Y30/00 ,  B82Y40/00 ,  C01B31/0253 ,  C01B31/0273 ,  C01B31/0484 ,  C01B32/168 ,  C01B32/174 ,  C01B32/194 ,  C08J5/24 ,  D03D15/00 ,  D04H1/64 ,  D04H1/74 ,  D10B2101/122 ,  Y10T428/249921 ,  Y10T442/3049

Abstract: Consolidated carbon nanotube or graphene yarns and woven sheets are consolidated through the formation of a carbon binder formed from the dehydration of sucrose. The resulting materials, on a macro-scale are lightweight and of a high specific modulus and/or strength. Sucrose is relatively inexpensive and readily available, and the process is therefore cost-effective.

公开(公告)号：US20170187159A1

公开(公告)日：2017-06-29

申请号：US15382852

申请日：2016-12-19

Applicant: U.S.A. as represented by the Administrator of the National Aeronautics and Space Administration

Inventor： GEORGE E. BUSCH ,  FARZIN AMZAJERDIAN ,  DIEGO F. PIERROTTET

IPC: H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H01S3/0941

CPC classification number: H01S3/06708 ,  H01S3/061 ,  H01S3/0612 ,  H01S3/0617 ,  H01S3/06733 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094049 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/1603 ,  H01S3/1608 ,  H01S3/161 ,  H01S3/1611 ,  H01S3/2308 ,  H01S3/2316

Abstract: A hybrid fiber rod includes a fiber core and inner and outer cladding layers. The core is doped with an active element. The inner cladding layer surrounds the core, and has a refractive index substantially equal to that of the core. The outer cladding layer surrounds the inner cladding layer, and has a refractive index less than that of the core and inner cladding layer. The core length is about 30 to 2000 times the core diameter. A hybrid fiber rod laser system includes an oscillator laser, modulating device, the rod, and pump laser diode(s) energizing the rod from opposite ends. The rod acts as a waveguide for pump radiation but allows for free-space propagation of laser radiation. The rod may be used in a laser resonator. The core length is less than about twice the Rayleigh range. Degradation from single-mode to multi-mode beam propagation is thus avoided.

公开(公告)号：US09688052B1

公开(公告)日：2017-06-27

申请号：US14010355

申请日：2013-08-26

Applicant: The United States of America as Represented by the Administrator of the National Aeronautics & Space Administration (NASA)

Inventor： David A. Stewart ,  Daniel B. Leiser

IPC: B32B5/14 ,  B32B7/02

CPC classification number: B32B7/02 ,  B22F2203/05 ,  B22F2207/17 ,  B32B9/041 ,  B32B2250/20 ,  B32B2307/30 ,  C04B37/005 ,  C04B2235/365 ,  C04B2235/3895 ,  C04B2235/775 ,  C04B2237/10 ,  C04B2237/36 ,  C04B2237/58

Abstract: A thermal protection system that reduces a mismatch of thermal expansion coefficients CTE between a first material layer (CTE1) and a second material layer (CTE2) at a first layer-second layer interface. A portion of aluminum borosilicate (abs) or another suitable additive (add), whose CTE value, CTE(add), satisfies (CTE(add)−CTE1)(CTE(add)−CTE2)

公开(公告)号：US20170179233A1

公开(公告)日：2017-06-22

申请号：US15449449

申请日：2017-03-03

Applicant: U.S.A. as represented by the Administrator of the National Aeronautics and Space Administration

Inventor： Sang Hyouk Choi ,  Yeonjoon Park ,  Glen C. King ,  Hyun-Jung Kim ,  Kunik Lee

IPC: H01L29/15 ,  H01L31/0352 ,  H01L29/165 ,  H01L31/0336 ,  H01L21/02 ,  H01L29/04

CPC classification number: H01L29/157 ,  H01L21/0242 ,  H01L21/02433 ,  H01L21/0245 ,  H01L21/02516 ,  H01L21/02532 ,  H01L21/02584 ,  H01L29/045 ,  H01L29/155 ,  H01L29/165 ,  H01L29/7782 ,  H01L31/0336 ,  H01L31/035236 ,  H01L31/03682 ,  H01L35/22 ,  Y02E10/546

Abstract: An electronic device includes a trigonal crystal substrate defining a (0001) C-plane. The substrate may comprise Sapphire or other suitable material. A plurality of rhombohedrally aligned SiGe (111)-oriented crystals are disposed on the (0001) C-plane of the crystal substrate. A first region of material is disposed on the rhombohedrally aligned SiGe layer. The first region comprises an intrinsic or doped Si, Ge, or SiGe layer. The first region can be layered between two secondary regions comprising n+doped SiGe or n+doped Ge, whereby the first region collects electrons from the two secondary regions.

公开(公告)号：US09680286B2

公开(公告)日：2017-06-13

申请号：US14868898

申请日：2015-09-29

Applicant: United States of America as represented by the Administrator of the National Aeronautics and Space Administration

Inventor： Joel McCorkel

IPC: G02F1/35 ,  H01S3/108 ,  H01S3/081 ,  H01S3/105 ,  G02F1/39 ,  G02B27/48 ,  G02F1/355

CPC classification number: G02F1/3551 ,  G02B27/48 ,  G02F1/39 ,  H01S3/0092 ,  H01S3/105

Abstract: A tunable laser system includes a tunable laser, an adjustable laser cavity for producing one or more modes of laser light emitted from the tunable laser, a first optical parametric oscillator positioned in a light path of the adjustable laser cavity, and a controller operable to simultaneously control parameters of at least the tunable laser, the first optical parametric oscillator, and the adjustable laser cavity to produce a range of wavelengths emitted from the tunable laser system. A method of operating a tunable laser system includes using a controller to simultaneously control parameters of a tunable laser, an adjustable laser cavity for producing one or more modes of laser light emitted from the tunable laser, and a first optical parametric oscillator positioned in a light path of the adjustable laser cavity, to produce a range of wavelengths emitted from the tunable laser system.