Latest Space News
Thu, 23 Nov 2017 00:00:00 +0100
The 11th annual Mobile Deployable Communications conference will take place in Warsaw, Poland on 1st and 2nd February 2018. Download Conference Agenda | Register to attend this Conference Flexible and continuous connectivity, anywhere, at any time remains a key priority for major defence forces around the world. With the critical threat of cyber warfare intensifying, there is now a pressing need to ensure secure communications can be effectively operated in contested environments. The...
Wed, 22 Nov 2017 19:00:00 +0100
Neutrinos are abundant subatomic particles that are famous for passing through anything and everything, only very rarely interacting with matter. About 100 trillion neutrinos pass through your body every second. Now, scientists have demonstrated that the Earth stops energetic neutrinos-they do not go through everything. These high-energy neutrino interactions were seen by the IceCube detector, an array of 5,160 basketball-sized optical sensors deeply encased within a cubic kilometer of very c...
Wed, 22 Nov 2017 15:09:00 +0100
ESA's first Earth observation satellite was launched on 23 November 1977. When the first Meteosat satellite took its place in the sky, it completed coverage of the whole globe from geostationary orbit and laid the foundations for European and world cooperation in meteorology that continues today. Weather - and particularly extreme weather - affects everything we do. Being able to see the whole disc of Earth allows forecasters to see developing weather systems, as well as working out wind spee...
Wed, 22 Nov 2017 00:00:00 +0100
The vault-like, 40-foot diameter, 40-ton door of Chamber A at NASA's Johnson Space Center in Houston was unsealed on November 18, signaling the end of cryogenic testing for NASA's James Webb Space Telescope. The historic chamber's massive door opening brings to a close about 100 days of testing for Webb, a significant milestone in the telescope's journey to the launch pad. The cryogenic vacuum test began when the chamber was sealed shut on July 10, 2017. Scientists and engineers at Johnson pu...
Tue, 21 Nov 2017 16:05:00 +0100
Europe's next four Galileo navigation satellites and the Ariane 5 rocket due to lift them into orbit are being readied for their 12 December launch from Europe's Spaceport in Kourou, French Guiana. Tuesday saw Galileo satellites 19-22 declared ready for flight, along with their Ariane. Combined activities are now under way, culminating in the satellites meeting their rocket in the Final Assembly Building. The satellites were flown in pairs to French Guiana last month. Once safely unboxed i...
Tue, 21 Nov 2017 14:26:00 +0100
A mini-rover, tools once used on the Moon and lasers for 3D mapping are in the backpack of the explorers of tomorrow. The terrain will be hazardous and it will be dark in volcanic caves, but this equipment could one day help to scout other planets. The alien-like landscapes of Lanzarote, Spain, are almost surreal but this volcanic island is helping to bring future space missions to reality. This month, an expedition with a dozen of experiments mobilised 50 people and four space agencies du...
Tue, 21 Nov 2017 14:00:00 +0100
ViaSat Inc. (NASDAQ: VSAT), a global broadband services and technology company, announced today it has expanded its current relationship with authorized value-added reseller Satcom Direct (SD), to offer ViaSat's full suite of in-flight connectivity (IFC) systems and services to large and mid-cabin business jets. The new agreement adds ViaSat's latest Ka-band business jet service to SD's IFC portfolio, which already included ViaSat's global Ku-band IFC service. ViaSat's Ka-band service is expecte...
Tue, 21 Nov 2017 00:00:00 +0100
We are proud to announce the third annual Maritime Reconnaissance and Surveillance Technology conference will be held in Rome from the 30th-31st January 2018. Download Conference Agenda | Register to attend this Conference Reconnaissance and Surveillance are key to developing clear and accurate maritime situational awareness. In order to maximise their ISR range, Navies and Maritime agencies around the globe are looking beyond the atmosphere to provide new and advanced surveillance capabil...
Mon, 20 Nov 2017 20:47:00 +0100
The propulsion system of the light-weight Angara 1.2 Launch Vehicle Service Module, manufactured by the Khrunichev Space Center (part of ROSCOSMOS State Corporation), completed successful hot-fire testing at the Federal State Enterprise "Rocket & Space Industry Research & Test Center" (RSI RTC) test facility (Peresvet, Moscow Region). The hot-fire tests are the most important and final stage of ground based propulsion system tests prior to flight testing. During the tests, specialists from...
Mon, 20 Nov 2017 17:00:00 +0100
For the first time ever astronomers have studied an asteroid that has entered the Solar System from interstellar space. Observations from ESO's Very Large Telescope in Chile and other observatories around the world show that this unique object was traveling through space for millions of years before its chance encounter with our star system. It appears to be a dark, reddish, highly-elongated rocky or high-metal-content object. The new results appear in the journal Nature on 20 November 2017. ...
Mon, 20 Nov 2017 16:30:00 +0100
Harris Corporation (NYSE:HRS) has partnered with NASA's Johnson Space Center to successfully complete thermal vacuum testing for the James Webb Space Telescope - validating its ability to operate in the frigid space environment. The Webb telescope will be the premier space observatory of the next decade, and will study galaxy, star and planet formation in the universe. Harris' team helped safeguard the telescope in Houston during Hurricane Harvey and ensured uninterrupted testing - including ...
Mon, 20 Nov 2017 14:31:00 +0100
Orbital ATK (NYSE:OA), a global leader in aerospace and defense technologies, contributed to the successful launch of a United Launch Alliance Delta II rocket as it lifted off Saturday from Vandenberg Air Force Base, California, carrying the first Joint Polar Satellite System (JPSS-1) spacecraft. Orbital ATK's contributions to the Delta II include nine Graphite Epoxy Motors (GEM 40) and a large composite fairing for the rocket. This event marks the penultimate launch of the Delta II rocket. It i...
Mon, 20 Nov 2017 00:00:00 +0100
Twice as big as Earth, the super-Earth 55 Cancri e was thought to have lava flows on its surface. The planet is so close to its star, the same side of the planet always faces the star, such that the planet has permanent day and night sides. Based on a 2016 study using data from NASA's Spitzer Space Telescope, scientists speculated that lava would flow freely in lakes on the starlit side and become hardened on the face of perpetual darkness. The lava on the dayside would reflect radiation from th...
Sat, 18 Nov 2017 13:03:00 +0100
Today, NASA launched NOAA's next-generation polar satellite, the Joint Polar Satellite System-1, into space. Two Raytheon (NYSE: RTN) weather programs are mission-critical components of the satellite's mission: the JPSS Common Ground System and the Visible Infrared Imaging Radiometer Suite sensor. Svalbard, Norway, is home to part of a global network of receiving stations that process and distribute polar satellite data to users worldwide. Photo taken at Kongsberg Satellite Services plateau, ...
Sat, 18 Nov 2017 08:00:00 +0100
A United Launch Alliance (ULA) Delta II rocket carrying the Joint Polar Satellite System-1 (JPSS-1) for NASA and National Oceanic Atmospheric Administration (NOAA) lifted off from Space Launch Complex-2 on Nov. 18 at 1:47 a.m. PST. The JPSS program provides the nation's next generation polar-orbiting operational environmental satellite system, delivering key observations for the nation's essential projects and services, including forecasting weather in advance and assessing environmental hazards...
Fri, 17 Nov 2017 00:00:00 +0100
Landing on Mars is difficult and not always successful. Well-designed advance testing helps. An ambitious NASA Mars rover mission set to launch in 2020 will rely on a special parachute to slow the spacecraft down as it enters the Martian atmosphere at over 12,000 mph (5.4 kilometers per second). Preparations for this mission have provided, for the first time, dramatic video of the parachute opening at supersonic speed. The Mars 2020 mission will seek signs of ancient Martian life by investiga...
Thu, 16 Nov 2017 15:07:00 +0100
The U.S. Navy's Communications Satellite Program Office, PMW 146, and Lockheed Martin (NYSE: LMT) handed over full operational control of the fifth Mobile User Objective System (MUOS) satellite to the Naval Satellite Operations Center (NAVSOC). The October 11 milestone followed the successful completion of the MUOS-5 satellite's on-orbit testing and delivery of all operational products needed to "fly" the satellite. In April, the Navy, working with Army Forces Strategic Command (ARSTRAT), con...
Thu, 16 Nov 2017 14:04:00 +0100
As part of ESA's strategy to foster commercial competitiveness in Europe while focusing on its core aims, the agency has transferred ownership of several ground tracking stations for reuse by external organisations. By the end of 2017, ESA will have transferred three stations to national organisations in Spain and Portugal, who will take over the provision of satellite tracking services to a wide variety of commercial customers. The three stations involved in the transfer are all equipped ...
Wed, 15 Nov 2017 19:33:00 +0100
Boeing [NYSE:BA] won large commitments across its twin- and single-aisle commercial airplane families, debuted key capabilities including the CST-100 Starliner docking and KC-46 refueling simulators, and announced services agreements at the 2017 Dubai Airshow. "This has been a very successful show for Boeing. Our regional customers have maintained their trust in our products and technology, and our partnerships in the Middle East region continue to grow," said Bernard Dunn, President, Boeing ...
Wed, 15 Nov 2017 12:00:00 +0100
A temperate Earth-sized planet has been discovered only 11 light-years from the Solar System by a team using ESO's unique planet-hunting HARPS instrument. The new world has the designation Ross 128 b and is now the second-closest temperate planet to be detected after Proxima b. It is also the closest planet to be discovered orbiting an inactive red dwarf star, which may increase the likelihood that this planet could potentially sustain life. Ross 128 b will be a prime target for ESO's Extremely ...
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    Personal information
     Name:<withheld>
     Age:<withheld>
     Country:<withheld>
     Location:<withheld>
    Contact information
     Email:<withheld>
     Phone:<withheld>
     Mobile:<withheld>
    Candidate Profile
     Date Submitted:15-11-2012
     Last Modified:15-11-2012 (04:53)
    Job information
     Current job:Post-doc
     Employment Term:Either
     Job location:Anywhere
     Date available:immediately
     Industry:Launch Systems
     KeywordsPhD on Heat Transfer and Aerodynamics in Gas/Steam Turbine. Expertise on wind tunnel experiment and CFD analysis.
    CV

    Objective

    An engineering/research position in Aerodynamics/ Heat Transfer/ CFD/ Mechanical Design/ Thermal System

    Summary

    More than 4 years of experience in heat transfer and aerodynamic experiment in the transonic cascade wind tunnel. More than 3 years of experience in numerical simulation on the flow in turbomachines with commercial codes. Proficient on thermodynamic and aerodynamic experimental equipment and instrumentation. Experienced in CFD analysis of the internal flow. Experienced in mechanical design with CAD tools. Self-motivated researcher with excellent analytical and communication skills. Can work independently as well as a team player.

     

    Software skills:

    CFD software (ANSYS-Fluent, ANSYS-CFX, Numeca); mechanical design code (SolidWorks); data acquisition code (Labview); data processing codes (MATLAB, Mathematics, C++).

     

    Experiment instrumentation skills:

    Infrared camera on the surface heat transfer measurement; thin film platinum gages on the surface heat transfer measurement; hot-wire probe on turbulence intensity measurement; five hole pressure probe on cascade secondary flow determination.

    Research Experience

    Graduate Research Assistant: Transonic Wind Tunnel Lab at Virginia Tech (Blacksburg, VA)         

    May 2008 – Aug 2012

    Advisor: Dr. Wing Ng& Dr. Srinath Ekkad

    −        Experimental and numerical researchon heat transfer in turbine blade tip gap region, Jan 2011 – present. (sponsored by Solar Turbines Incorporated)

    Actions

     

    §  Mentor undergraduate student using SolidWorks (CAD software) to fabricate squealer tip blade 3D geometry, and to conduct the mechanical safety inspection;

    §  Guide Master degree candidate using infrared (IR) camera to record blade tip heat transfer data, and to reduce the data;

    §  Instrument Thin Film Platinum gages to measure near tip region heat transfer data. 

    §  Perform conjugate heat transfer simulation with CFD codes to analysis a thermal protection scheme in the turbine blade tip gap region. (ANSYS-Fluent was employed)

    Outputs

    §  The heat transfer characteristics on the turbine blade tip and the near tip region were mapped with the IR measurement data. The physics of the tip gap flow, and its effect on heat transfer were discussed. Different tip gap dimensions were compared at multiple main flow Mach numbers, and suggestions were proposed to protect the turbine blade tip from thermal damage.

    §  The sponsor (Solar Turbine Inc.) was satisfied with the first stage progress report, and decided to continuously support further research on tip gap flow with our lab.

    §  The results were summarized in the form of a conference paper, and were submitted to the international conference of TURBOEXPO2013.

     

    −        Experimental and CFD investigation on film-cooling performance on turbine blade and nozzle guide vane, Jan 2009 – Dec 2010. (sponsored by Solar Turbines Incorporated)

    Actions

     

    §  Design and set up film cooling test system in gas turbine linear cascade rig; conduct the heat transfer measurement; Processed the data reduction. (Labview codes were written for the DAQ process; Matlab codes were written for data reduction)

    §  Performed CFD study to investigate the detail physics on the shock/film cooling interaction. (ANSYS-CFX was employed)

    §  Performed Hot-wire probe measurement to determine the freestream turbulence intensity in the linear cascade test section.

    Outputs

    §  The heat transfer coefficient and film cooling effectiveness of a fan-shaped hole injected gas turbine blade was recorded for the first time under a unique flow condition. A novel phenomenon of shock/film cooling interaction was observed in the experiment, and the physics were explored in the numerical study. The suggestions were proposed to optimize the film cooling performance on a gas turbine blade.

    §  The sponsor (Solar Turbine Inc.) was satisfied with the final report, and assigned new research projects to our lab.

    §  A part of the research was summarized as a journal paper, which was accepted by the ASME Journal of Turbomachinery. Two other journal papers were submitted to the AIAA Journal of Propulsion. The experimental results were presented at the conference of TURBOEXPO in Jun 2011, and AIAA conference in Jan 2012.

     

    −        Determination of secondary flow aerodynamic loss in linear cascade of a high turning blade with divergent endwall , Sep 2008 – May 2009. (sponsored by Siemens)

    Actions

     

    §  Designed a five-hole pressure probe for supersonic measurement. (Flow strength estimation/safety check was done both manually and using SolidWorks for special test conditions)

    §  Conducted the five-hole pressure probe measurement and data reduction for the total pressure loss determination. (3D interpolation method was coded in Matlab to reduce the pressure data based on the calibration data)

    §  Designed step motor driving traverse mechanism for the probe moving in the test section to perform multiple location data acquisition.

    Outputs

    §  The pressure loss caused by the secondary flow at the exit of a gas turbine blade cascade was determined into a 2-D contour map. The result was used to optimize the geometry of the endwall contour in a gas turbine blade cascade.

    §   The sponsor (Siemens) was satisfied with the progress report, and decided to continuously support further research.

    §  The results were presented at the conference of ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting.

     

     

    Graduate Research Assistant: Solar Energy Lab in Chinese Academy of Science (Beijing, China)

    Apr 2006 – Apr 2007

    Advisor: Dr. Zhifeng Wang                                                                 

    −        Experimental and numerical investigations of wind effect in the heliostats field of a solar tower plant (supported by Natural Science Foundation of China)

    Actions

     

    §  Performed CFD investigation on the wind flow in a heliostats field. (Phoenix code was employed in CFD study)

    §  Assist the wind tunnel experiment to measure the pressure distribution on the heliostat surface.

    Outputs

    §  Literature research of the wind effect on the heliostats was finished. The preliminary CFD study was carried out.

    §  Wind tunnel experiment was done. The pressure distribution on the heliostats front and back surface was recorded at different attacking angles and different wind speeds.

    §  The principal advisor/manager was convinced to cancel the further research project of the wind effect on heliostats.

     

     

    Graduate Research Assistant: School of Jet Propulsion in Beijing University of Aeronautics and Astronautics (Beijing, China)                                                                                                 

    Jun 2003 – Apr 2006

    Advisor: Dr. Xingmin Gui                                                                 

    −        Designed and conducted CFD simulation of mini size rotary pump for artificial heart or left ventricular assist device, Aug 2003 - Apr 2006. (collaborated with Fuwai Hospital)

    Actions

     

    §  Performed CFD inspection on the mini size rotary pump for artificial heart or left ventricular assist device; designed and improved the rotor blade and the stator vane profiles; developed a 2-D through flow code as a tool for the blade profile design. (The commercial CFD codes, Numeca, was employed)

    §  Invented the outer bearing rotary pump for low hemolysis artificial heart. (The bearing was designed at the outside of the rotor for better powering, improved cooling and lubricating conditions, and eliminating tip gap flow)

    Outputs

    §  The original design of a blood pump for the artificial heart was improved based on the result of the numerical investigation.

    §  A patent was awarded for the novel design of the blood pump to minimize the hemolysis, manufacture cost, and maintenance complication.

    §  The progress report in the form of a proposal convinced the National Natural Science Foundation of China to support further research.

    §  The research was published as a technical paper in the journal of Artificial Organs in 2007.

     

    Teaching Experience

    Instructor: Course of Engineering Design and Economics, at Virginia Tech (Blacksburg, VA)        

    Aug 2011 – Dec 2011

    −        Lecture a class of 30 students (sophomore level)

    −        Topics include product design&engineering economics

    Education

    Virginia Polytechnic Institute and State University (Blacksburg, Virginia)

    Ph.D. Candidate in Mechanical Engineering      
    Total GPA: 3.81/4.0

    Dissertation: Fan-Shaped Hole Film Cooling on Turbine Blade and Vane in a Transonic Cascade with High Freestream Turbulence

     

     Aug 2012

     

    Beijing University of Aeronautics and Astronautics(Beijing, China)                        

    M.S. in Aerospace Propulsion Theory and Engineering 

    Thesis: Study and design on a low hemolysis axial blood pump

                                 

    Apr 2006

     

    Beijing University of Aeronautics and Astronautics(Beijing, China)                                     

    B.S. in Thermal Energy and Power Engineering

    Jun 2003

    Publications

    1.     S. Xue, W. Ng, H.K. Moon and L. Zhang. “Fan-Shaped Hole Film Cooling on Turbine Blade in a Transonic Cascade with High Freestream Turbulence,” 50th AIAA Aerospace Sciences Meeting, Nashville Tennessee, Jan 2012, AIAA-2012-0368.

     

    2.     S. Xue, A. Newman, W. Ng, H.K. Moon and L. Zhang. “Heat Transfer Performance of a Showerhead and Shaped Hole Film Cooled Vane at Transonic Conditions,” accepted by ASME Journal of Turbomachinery. (Presented asGT2011-45142 at the Turbo Expo 2011: Power for Land, Sea, and Ai)

     

    3.     S. Abraham, K. Panchal, S. Xue, S. V. Ekkad, W. Ng, B. J. Brown, A. Malandra. “Experimental And Numerical Investigations of A Transonic, High Turning Turbine Cascade with A Divergent Endwall,” Proceedings of ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting and 8th International Conference on Nanochannels, Microchannels and Minichannels, FEDSM2010-ICNMM2010.

     

    4.     Y. Zhang, S. Xue, X. Gui, H. Sun, H. Zhang, X. Zhu, and S. Hu. “A Novel Integrated Rotor of Axial Blood Flow Pump Designed With Computational Fluid Dynamics,” Artificial Organs, 2007, Vol. 31, pp. 580-585.

     

    5.     S. Xue, W. Ng, S. V. Ekkad, “Shock effect on fan-shaped film cooled gas turbine blade suction side: CFD and comparison with experiment”. (in preparation for a journal submission)

     

    6.     K. Anto, S. Xue, W.F. Ng, L.J. Zhang, H.K. Moon, “Effects of Tip Clearance Gap and Exit Mach Number on Turbine Blade Tip and Near-Tip Heat Transfer”. (submitted to the ASME Turbo Expo 2013)

     

    7.     Chinese Patent: CN1958085 2007-05-09

    Title: Outer bearing type artificial heart blood pump

    Inventor: Song Xue, Yan Zhang, Xingmin Gui et al.

    Appl. No.: 200610002894.3

    Filed: Feb 10, 2006

    Field of Search: A61M1/10(2006.01)I

    Major Courses

     

    −        Fluid Dynamics

    −        Advanced Instrumentation

    −        Turbomachinery

    −        Modeling MEMS & NEMS

    −        Computational Fluid Dynamics

    −        Math of Mechanic Engineering Analysis

    −        Convective Heat& Mass Transfer

    −        Heat Conduction



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