Aerospace and Mechanical Engineering

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  • Inventor(s):
    Timothy C. Ovaert
    Patent Number:
    US 8919066 B2
    Description:

    An apparatus including an impact surface and a plurality of spaced apart stiffening columns extending from an underside of the flooring plate. The columns remain substantially rigid up to a predetermined critical pressure and then buckle as the pressure increases. The columns are at least partially surrounded by a resilient underlayment. Deflection stops may extend from the flooring plate to prevent over-buckling and/or permanent deformation of the stiffening columns. In some examples, the de…

    Date Issued:
    2014-12-30
    Resource Type
    Patent
  • Inventor(s):
    Mehul Patel, Thomas C. Corke, Alan B. Cain
    Patent Number:
    US 9541106 B1
    Description:

    The present invention relates to a method of designing or optimizing a control surface for use with plasma actuators for controlling an aircraft, missile, munition or automobile, and more particularly to controlling fluid flow across their surfaces or other surfaces using plasma actuators, which would benefit from such a method. The various embodiments provide the steps to increase the efficiency of aircraft, missiles, munitions and automobiles. The method of flow control also provides a mean…

    Date Issued:
    2017-01-10
    Resource Type
    Patent
  • Inventor(s):
    Ryan K. Roeder, Matthew J. Meagher, Robert J. Kane
    Patent Number:
    US 9550012 B2
    Description:

    The invention provides a novel composite bone graft system utilizing a porous collagen scaffold having a matrix impregnated with calcium phosphate particles and more than one bioactive agent, one of which is conjugated to the matrix. The graft system exhibits increased mechanical strength and osteogenic properties by providing sites for tissue attachment and propagation. The bioactive agents are delivered to the scaffold via different mechanisms to enable sequential and sustained release of t…

    Date Issued:
    2017-01-24
    Resource Type
    Patent
  • Inventor(s):
    Nishant Chetwani, Catherine Cassou, David Go, Hsueh-Chia Chang
    Patent Number:
    US 8716675 B2
    Description:

    An alternating current electrospray mass spectrometry device includes an electrospray device having at least one emitter providing a passageway for transmission of an analyte sample. At least one conductive element is in electrical communication with the at least one emitter. A power source generates an alternating current electric field to form a liquid cone at a tip of the emitter and ionizes the analyte sample present in the liquid cone. The frequency of the electric field entrains low mob…

    Date Issued:
    2014-05-06
    Resource Type
    Patent
  • Inventor(s):
    Kishore K. Pydimarry, Duane T. Detwiler, John E. Renaud, Neal M. Patel, Byungsoo Kang, Chandan K. Mozumder
    Patent Number:
    US 8880380 B2
    Description:

    Crashworthiness designing of a structure using a Hybrid Cellular Automata (HCA) algorithm where field states are computed using finite element analysis (FEA) and the material distribution of the structure is updated at each iteration using cellular automata method. The HCA algorithm optimizes the topology of the structures to achieve certain performance within the limits of various constraints applied to ensure crashworthiness of the structures. The HCA algorithm may also be applied to design…

    Date Issued:
    2014-11-04
    Resource Type
    Patent
  • Inventor(s):
    Fabio Semperlotti, Hongfei Zhu
    Patent Number:
    US 9437183 B2
    Description:

    An embedded acoustic metamaterial lenses allows for ultrasonic beam-forming and high resolution identification of acoustic sources for structural health monitoring. The lenses design provides an alternative to conventional phased-array technology enabling the formation of steerable and collimated (or focused) ultrasonic beams by exploiting a single transducer. The ultrasonic beam can be steered by simply tuning the frequency of the excitation. Also, the embedded lens can be designed to achiev…

    Date Issued:
    2016-09-06
    Resource Type
    Patent
  • Inventor(s):
    Thomas C. Corke, Mehul Patel
    Patent Number:
    US 9,834,301 B1
    Description:

    A method of increasing the performance of an aircraft, missile, munition or ground vehicle with plasma actuators, and more particularly of controlling fluid flow across their surfaces or other surfaces which would benefit from such a method, includes the design of an aerodynamic plasma actuator for the purpose of controlling airflow separation over a control surface of a aircraft, missile, or a ground vehicle, and a method of determining a modulation frequency for the plasma actuator for the …

    Date Issued:
    2017-12-05
    Resource Type
    Patent
  • Inventor(s):
    Thomas C. Corke, Richard Kaszeta, Calman Gold
    Patent Number:
    US 9848485 B2
    Description:

    A plasma generating device intended to induce a flow in a fluid via plasma generation includes a dielectric separating two electrodes and a power supply. The first electrode is exposed to a fluid flow while the second electrode is positioned under the dielectric. The power supply is electrically coupled to a switch and the first and second electrodes. When the power supply is energized by repeated action of the switch, it causes a pulsed DC current between the electrodes which causes the flui…

    Date Issued:
    2017-12-19
    Resource Type
    Patent
  • Inventor(s):
    Fabio Semperlotti, Mihir Sen
    Patent Number:
    US 9936763 B2
    Description:

    A wearable, portable, self-contained refrigeration/cooling garment may effectively convert the energy of human movement into heat flux. The heat flux can then used to actively control the temperature of the human body or of part of it. In one example of the present disclosure, the garment is a type of footwear powered by the wearer’s ambulation.

    Date Issued:
    2018-04-10
    Resource Type
    Patent
  • Inventor(s):
    Siyuan Zhang, Jeremiah Zartman, David Hoelzle, Cody Narciso
    Patent Number:
    US 9975121 B2
    Description:

    A microfluidic device for evaluating a tissue sample can include a tissue chamber, a liquid inlet channel, a liquid outlet channel, and at least one of components (1)-(3). The tissue chamber can be defined by a plurality of walls, at least one of which is transparent. The liquid inlet and outlet channels can be in fluid communication with the tissue chamber. Components (1)-(3) can include: (1) a deformable membrane disposed within the tissue chamber and being configured to oscillate, upon app…

    Date Issued:
    2018-05-22
    Resource Type
    Patent
  • Inventor(s):
    Jeremiah Zartman, David Hoelzle, Cody Narciso, Siyuan Zhang, Wendy Alvarez Barrios, Victoria Zellmer
    Patent Number:
    US 10168259 B2
    Description:

    One aspect of the present disclosure can include a microfluidic device for imaging a tissue sample. The device can include a tissue chamber, a liquid inlet channel, and a liquid outlet channel. The tissue chamber can be defined by a plurality of walls, at least one of which is transparent. The liquid inlet channel can be fluid communication with the tissue chamber. The liquid outlet channel can be in fluid communication with the tissue chamber. The tissue chamber can be sized and dimensioned …

    Date Issued:
    2019-01-01
    Resource Type
    Patent