Latest Space News
Mon, 28 May 2018 00:48:52 +0000
With the signing of a new presidential directive calling for commercial space regulatory reform, the Commerce Department has released new details about its plans to create a “one-stop shop” for such issues. SpaceNews.com
Sun, 27 May 2018 22:53:53 +0000
Former NASA Astronaut Greg “Box” Johnson is joining Space Nation, the startup offering space training experiences for people around the world, as its new Chief Space Officer. SpaceNews.com
Fri, 25 May 2018 23:17:56 +0000
New International Space Station crew assignments announced by NASA May 24 will give the agency a little additional schedule margin for getting commercial crew vehicles into service as it continues to study backup options. SpaceNews.com
Fri, 25 May 2018 16:06:19 +0000
Rocket Lab announced May 25 it has rescheduled the next launch of its Electron small rocket for late June after correcting a problem that delayed an April launch attempt. SpaceNews.com
Fri, 25 May 2018 15:23:31 +0000
The space race of old was between governments, but we may be on the brink of a 21st century private space race on an international scale. SpaceNews.com
Fri, 25 May 2018 13:35:31 +0000
Phase Four, a company developing an advanced electric propulsion system for use on cubesats and larger spacecraft, announced sales of its thrusters to NASA and Astro Digital May 24. SpaceNews.com
Fri, 25 May 2018 05:45:07 +0000
Companies that one competed for the Google Lunar X Prize now expect to fly their first lunar landers in the next two years to serve the needs of commercial and government customers, including NASA. SpaceNews.com
Thu, 24 May 2018 22:27:48 +0000
Virgin Orbit’s campaign to design, build and fly LauncherOne, its air-launched rocket for small satellites, relies heavily on manufacturing software. SpaceNews.com
Thu, 24 May 2018 18:58:04 +0000
A new policy President Trump will sign May 24 will implement a series of regulatory reforms to support commercial space recommended by the National Space Council earlier this year. SpaceNews.com
Thu, 24 May 2018 17:14:56 +0000
PASADENA — NASA intends to begin buying rides on small commercial lunar landers by the end of the year and start looking for miniature instruments for those flights. “We have a strong push to get a lander service to the Moon as quickly as possible,” James Reuter, NASA deputy associate administrator for the Space Technology Mission […] SpaceNews.com
Thu, 24 May 2018 15:14:49 +0000
As the U.K. continues to wrangle with the EU over Galileo, there is growing speculation that the country could seek to develop its own independent global navigation system with Australia — or even Japan. SpaceNews.com
Thu, 24 May 2018 14:06:41 +0000
Bombastic and colorful, Rogozin’s international profile shot up significantly in 2014 when, in response to the first round of Western sanctions against Moscow for its annexation of Crimea, he tweeted that NASA could use a trampoline to reach the International Space Station. SpaceNews.com
Thu, 24 May 2018 13:22:56 +0000
Technological advances have opened up a wide range of propulsion options for satellites, but companies developing those systems don’t expect a single approach to become dominant. SpaceNews.com
Thu, 24 May 2018 13:00:07 +0000
ICEYE raised $34 million in a Series B investment round, bringing the Finnish company’s total funding to $53 million, ICEYE announced May 24. SpaceNews.com
Thu, 24 May 2018 12:47:15 +0000
PASADENA, California — Satellite manufacturers and operators attending the Space Tech Expo here offered contrasting views on how long satellites should continue to work in orbit. For years, government and commercial operators sought to extend the life of satellites by sending them into orbit with plenty of fuel and components designed to withstand 15 years […] SpaceNews.com
Thu, 24 May 2018 11:13:50 +0000
In his first congressional testimony since becoming NASA administrator a month ago, Jim Bridenstine sought to reassure Senate appropriators about the status of several agency programs threatened with cancellation, as well as his own views on climate change. SpaceNews.com
Thu, 24 May 2018 02:30:48 +0000
A major challenge facing companies planning to perform on-orbit servicing will be ensuring satellite operators do not view their activities as potential threats. SpaceNews.com
Thu, 24 May 2018 02:10:04 +0000
The U.S. Air Force's plans to respond to emerging threats by launching constellations of satellites. That strategy has important implications for spacecraft manufacturing and testing. SpaceNews.com
Wed, 23 May 2018 23:31:37 +0000
A cooling problem with a key instrument on a weather satellite launched less than three months ago could degrade its performance for at least part of each day, with potential but still undetermined effects on weather forecasts, officials said May 23. SpaceNews.com
Wed, 23 May 2018 21:11:17 +0000
The U.S. Federal Communications Commission rejected a Eutelsat application for a satellite that would use the same spectrum as one planned by Intelsat. SpaceNews.com
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    Personal information
     Name:<withheld>
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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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