Latest Space News
Mon, 20 Aug 2018 17:54:03 +0000
New DoD report raises concerns about China’s counterspace weapons, including kinetic-kill missiles, ground-based lasers and orbiting space robots. SpaceNews.com
Mon, 20 Aug 2018 14:23:53 +0000
A growing talent gap is one of the biggest economic, cultural, and security risk this nation faces in the critical next two decades. SpaceNews.com
Mon, 20 Aug 2018 14:00:24 +0000
Relativity Space, the startup developing a small launch vehicle making extensive use of 3D-printing technologies, has brought on board a former SpaceX and Virgin Orbit executive to help grow the company. SpaceNews.com
Sun, 19 Aug 2018 18:24:07 +0000
Retired Air Force officer Wesley Hallman: “We all want this to work. But does it have to be a separate service?" SpaceNews.com
Sat, 18 Aug 2018 16:50:24 +0000
NASA announced Aug. 17 that it will allow SpaceX to use a fueling approach for its commercial crew missions that attracted prior scrutiny, pending a final series of tests. SpaceNews.com
Fri, 17 Aug 2018 02:34:20 +0000
The space industry outsider nominated to become NASA deputy administrator said he would focus on acquisition reform and adapting NASA to a “new role” with commercial partners if confirmed by the Senate. SpaceNews.com
Thu, 16 Aug 2018 21:48:01 +0000
A proposed standard announced at a conference last week seeks to provide the same launch flexibility for larger smallsats currently enjoyed by cubesats. SpaceNews.com
Thu, 16 Aug 2018 21:28:17 +0000
An audit by the Defense Department’s inspector general office found security cracks in the supply chain of four critical military space programs. SpaceNews.com
Thu, 16 Aug 2018 21:25:38 +0000
Canadian remote sensing company UrtheCast says it has sufficient resources to cover the $20 million purchase of analytics firm Geosys from U.S. dairy giant Land O’Lakes. SpaceNews.com
Thu, 16 Aug 2018 17:34:03 +0000
Millennium Space Systems was founded in 2001 and has approximately 260 employees. It has developed satellites ranging from 50 kg to more than 6,000 kg. SpaceNews.com
Thu, 16 Aug 2018 12:00:22 +0000
SSL, a company known for building communications satellites and spacecraft systems, will help the U.S. Air Force Space and Missile Systems Center define its next generation of protected military communications, the Maxar Technologies company announced Aug. 16. SpaceNews.com
Thu, 16 Aug 2018 09:20:11 +0000
The commercial spaceflight industry has been enjoying success both on and off the launch pad this year. SpaceNews.com
Thu, 16 Aug 2018 05:05:34 +0000
Descartes Labs announced Aug. 15 a partnership with Airbus to feed high resolution global imagery into its geospatial data platform. The Sante Fe, New Mexico-based startup also completed beta testing of its cloud-based “data refinery,” and added weather data. SpaceNews.com
Thu, 16 Aug 2018 00:21:09 +0000
International mistrust in space could become a bigger problem as the commercial space industry continues to grow and demand a peaceful environment to do business. SpaceNews.com
Wed, 15 Aug 2018 22:55:18 +0000
NASA says an Aug. 14 test of an engine for the Space Launch System was a success despite an unspecified “facility issue” that caused the test to end early. SpaceNews.com
Wed, 15 Aug 2018 18:18:44 +0000
ESA is pushing European industry to continue innovating and finding efficiencies even after Vega C’s introduction in 2019 and Ariane 6’s debut in 2020. SpaceNews.com
Wed, 15 Aug 2018 18:13:20 +0000
China will launch its Chang’e-4 lander and rover mission in December in what will be the first ever attempt at a soft landing on the far side of the moon, authorities said Aug. 15 SpaceNews.com
Tue, 14 Aug 2018 23:33:39 +0000
NASA has done a good job implementing the recommendations of its latest planetary science decadal survey despite past budget problems, but needs to improve some programs, a recent report concluded. SpaceNews.com
Tue, 14 Aug 2018 22:04:46 +0000
The Air Force will use “rapid procurement authorities” in this program and is targeting the first next-generation OPIR launch in 2023. SpaceNews.com
Tue, 14 Aug 2018 21:57:09 +0000
The Pentagon's Joint Oversight Requirements Council will be briefed this fall on potential solutions to a major national security vulnerability: hypersonic weapons that fly into space at supersonic speeds and descend back down to Earth directly on top of targets. SpaceNews.com
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    Personal information
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    Candidate Profile
     Date Submitted:01-11-2012
     Last Modified:02-11-2012 (08:14)
    Job information
     Current job:Research Assistant
     Employment Term:Temp/Contract
     Job location:Own country
     Date available:within a month
     Industry:Civil Agencies/International Organizations, Satellite Manufacturers and Subcontractors, Satellite Operators, , , Launch Systems, Business Services
     KeywordsSatellite, Remote Sensing, Matlab, IDL, ENVI, Imaging, Sensor, Orbit
    CV

    EDUCATION

     

    2012 – Present , Ph.D Candidate, Atmospheric Science, University of Houston

    2010 – 2011, M.S., Space Architecture (Summa Cum Laude), University of Houston

    Thesis: Lunar Radio Telescope and Future Astronomy Analysis on the Moon’s Far Side

    2006 – 2010 , B.S., Physics, Stephen F. Austin State University

     

     

    RESEARCH INTEREST

    1. Cassini Observations of Jupiter and Saturn

    The multi-filter images from the Imaging Science Subsystem (ISS) on board Cassini are utilized to explore the vortex behavior on Saturn during the time period of 2004-2011 (starting in northern winter, moving through equinox, into northern spring). Our exploration is concentrated in the northern hemisphere, which is a follow-up study of the vortex survey in the southern hemisphere (Vasavada et al., 2006). We mainly utilize ISS images from two filters (i.e., MT3 and CB2), which probe the pressure levels around the tropopause and upper troposphere, respectively. Our exploration based on the maps in 2005 and 2008 suggests that there are significantly different vortex behaviors (i.e., size, spatial distribution, and vertical structure) between the two hemispheres. We are exploring more global maps after Saturn’s spring equinox (August, 2009) to see if there are seasonal effects on the vortex behavior. Comparisons between Saturn and Jupiter can then be drawn, and models can be extended to exoplanet research.

    2. Io - Proposal

    Io is the most geologically dynamic body in the Solar System. Its surface is covered with active volcanoes (the largest in the Solar System) with plume heights in excess of 400 km above Io's surface [e.g. 1]. High temperature lavas on Io resemble Archaean-aged komatiite lavas on Earth [2], and eruptions on Io are similar in scale to those of ancient terrestrial, Martian and Venusian flood basalts [3]. Volcanism is a key geological process, and Ionian volcanism could be a potential laboratory for investigating early volcanic episodes and evolution on terrestrial planets.

    Based on the most recent planetary science decadal survey [4] and New Opportunities in Solar System Exploration (NOSSE) report [5], an Io Observer mission was included in the 2009 New Frontiers Announcement of Opportunity [6]. The decadal survey called for the Io Observer to focus on determining Io’s internal structure and to investigate the mechanisms contributing to its extensive volcanic activity. The recommended mission payload consisted of a narrow angle imager, thermal mapper, ion and neutral mass spectrometer, and a flux gate magnetometer. Here we propose an additional instrument that would enhance our understanding of Io—a dust analyzer—which would be capable of determining the composition of dust grains in Io's atmosphere and volcanic plumes, providing direct and indirect analysis of Io's volcanic activity as well as insights into Io's formation, interior and surface structure, and atmosphere.

     

    3. Evapotranspiration estimation of almond and pistachio orchards using the MODIS/ASTER Airborne Simulator (MASTER)

    The MODIS/ASTER Airborne Simulator (MASTER) was used to estimate the evapotranspiration (ET) of almond and pistachio orchards in southern California using a variety of remote sensing models including the Vegetation Index Trapezoid (VIT) method, and SEBAL and METRIC ET models. Additional inputs were acquired using the California Irrigation Management Information System (CIMIS) online weather station data for potential evapotranspiration calculations and leaf area index (LAI) data from hemispherical photography. Comparisons were made to both the CIMIS potential and reference ET, field data of crop water stress, soil moisture, the VIT method, and between the two different ET models SEBAL and METRIC. Differences in ET between the two models were minimal with a strong linear relationship. The ET results suggest little water stress in the almond and pistachio crops one to four days since watered. However, calculations using the measured data with the Thornthwaite potential ET equations and IPCC local climate change models suggest that the same amount of irrigation water would maintain a ~75% of current crop area.

     

    RESEARCH EXPERIENCE

    JPL – Planetary Science Summer School (PSSS), Team X, May 2011 – June 2011

    *Io orbiter mission proposal – Structures and Science Lead – Atmosphere and Magnetosphere

    University of Houston  Department of Geoscience, Research Assistant, 2012 - Present

    *Researching vortex structure and convection storms on Saturn using Matlab and IDL (outlined above)

    Boeing - Research Assistant, 2010-2011

    *Conducting research with Boeing on Martian lander designs and SEP vehicle usage.

    Houston Museum of Natural Science - Research Assistant, 2010-2011

    *Design of lunar habitat and structures using 3D Studio Max

    NASA/NSERC  Research Assistant, June 2011- August 2011

    *Worked with airborne remote sensing equipment on board NASA’s DC-8, and other satellites. Thermal Infrared (TIR) calibration of various data sets.

     

    TEACHING EXPERIENCE

    Teaching Assistant - AST 105: General Astronomy Spring/Fall 2009

     

    ACADEMIC AWARDS AND HONORS

    Freshman and Sophomore Academic Scholarship – Stephen F. Austin State University

    Master’s of Science, Space Architecture – Summa Cum Laude – University of Houston

     

    CONFERENCES/TALKS

    Trammell, H.J., Seasonal Changes in Vortex Behavior on Saturn, Division of Planetary Scinece (DPS), American Astronomical Society (AAS), October 18th, 2012, Reno, NV, USA.

    Trammell, H.J., Thermal Infrared Calibration and Systems Analysis, NASA’s SARP, July 2011. Irvine, CA, USA.

    Trammell, H.J., Lunar Radio Astronomy, 62nd International Astronautical Congress, Oct. 2011. Cape Town, South Africa.

    Trammell, H.J., Thermal Infrared Calibration and Satellite Systems Analysis, Stephen F. Austin State University, Dec 2011. Nacogdoches, TX, USA.

     

    PUBLICATIONS

    Li, L., K. H. Baines, M. A. Smith, R. A. West, S. Pérez-Hoyos, H. J. Trammell, A. Simon-Miller, B. Conrath, P. J. Gierasch, G. S. Orton, C. A. Nixon, G. Filacchione, P. M. Fry, and T. W. Momary. Emitted power of Jupiter based on Cassini CIRS and VIMS observations. J. Geophys. Res., doi:10.1029/2012JE004191, 2012. In press.

    Kefauver, S.C., Davey, S., Furey, B., Gartner, A., Kurzweil, D., Siebach, K., Slawsky, L., Snyder, E., Trammell, H.J., Young, J., Ustin, S. Estimation of evapotranspiration in almond and pistachio orchards using the MODIS/ASTER Airborne Simulator (MASTER). Photogrammetric Engineering and Remote Sensing. 2012. Under Review.

    Trammell, H.J. Feasibility Study of Radio Telescope Array and Future Astronomy Analysis on the Moon’s Far Side. 2011. SARA Journal, Oct/Nov 2011 pp. 14-21.


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