Mr. Dan Nelson Harpold

Mr. Dan Nelson Harpold

  • EMERITUS
  • 301.614.6378
  • NASA/GSFC
  • Mail Code: 699
  • Greenbelt , MD 20771
  • Employer: EMERITUS
  • Brief Bio

    Dan Harpold has been involved in numerous space flight mass spectrometer experiments for 50 years. These include earth orbiting, cometary and planetary missions. He was Co-I on the OGO VI Neutral Mass Spectrometer; Co-I on the Galileo Probe Mass Spectrometer, Co-I on the NOZOMI (Planet B) Neutral Mass Spectrometer and Co-I on the Huygens Gas Chromatograph Mass Spectrometer (GCMS) and the principal mechanical systems engineer on both the Cassini GCMS and the Cassini Ion and Neutral Mass Spectrometer. He was a key participant in the design, development, assembling and testing of all the above listed instruments. He had similar responsibilities for the Neutral Gas and Ion Mass Spectrometer on the CONTOUR mission that was launched in July 2002. In addition, he was the element lead for the Quadrupole Mass Spectrometer (QMS) and the Gas Processing System (GPS) in the Sample Analysis at Mars (SAM) instrument suite on board the Mars Science Laboratory/Curiosity Rover. In this capacity he was responsible for the proper design, development and building of the QMS and a wide range of components comprising the GPS. He was also the element lead for the QMS flown on the LADEE mission that orbited the moon and the MAVEN mission that was placed in orbit around Mars in 2014. He currently supports the design, assembly and testing of the Mars Organic Molecular Analyzer (MOMA) mass spectrometer. He has served as Technical Officer on numerous contracts relating to development of space flight instruments and components and has been Co-PI on a GSFC IR&D effort to miniaturize a gas chromatograph mass spectrometer system utilizing MEMS technology and for a high pressure/high temperature capillary leak array that could be used on an entry probe mission onto the surface of Venus. He was a co-recipient of a patent for this effort.

    Research Interests

    Flight Mass Spectrometers

    Miniaturized Mass Spectrometers

    Mass Spectrometers for harsh environments

    Ionization Techniques

    Miniaturized vacuum pumps

    Gas/solid sample introduction systems

    Miniaturized pressure regulators

    High temperature pressure sensors

    High temperature/high pressure vacuum/pressure sealing techniques

    Atmospheric composition measurements and results from planetary atmospheres.

    Current Projects

    SAM (Sample Analysis at Mars)

    Support SAM Test Bed activities including any repairs that might be necessary.

    MAVEN Test Bed

    Support MAVEN Test Bed calibration activities as necessary as  well as supporting any repairs needed for the mass spectrometer or calibration system.

    MOMA (Mars Organic Molecular Analyzer) - MS (Mass Spectrometer)

    Support design, assembly and testing  of the MOMA-MS and Gas Processing system as needed. 

    Positions/Employment

    7/1963 - Present

    Instrument Scientist

    NASA/GSFC, Code 699 Greenbelt, MD 20771

    Participated in the design, development, assembly, testing, calibration and data analysis from mass spectrometer instruments on earth orbiting satellite missions throughout the 1960's thru the 1970's and on planetary and cometary missions from the 1980's to the present.

    Education

    BS degree in Physics and Math from North Georgia College, 1961.
    Gas Surface Interaction courses at MIT, 1967.
    Atmospheric research courses at Dept. of Agriculture, 1970.

    Professional Societies

    American Geophysical Union, 1965 - 2013
    American Society of Mass Spectrometry, 1969 - Present

    Awards

    • Lunar Atmosphere and Dust Environment Explorer (LADEE) Certificate of Appreciation Award – 2014
    • NASA Group Achievement Award to The MAVEN Team – 2014
    • RHG Exceptional Achievement Award to the Engineering Team on the MAVEN Project – 2014
    • NASA Group Achievement Award for the MSL SAM Instrument and Science Team – 2013
    • Co-Inventor on the patent for the ‘Systems, Methods and Apparatus of a Low Conductance Silicon Micro-Leak for a Mass Spectrometer Inlet’. Patent no. 7,922,920 B2, 2011.
    • NASA Group Achievement Award to the Sample Analysis at Mars Team – 2011
    • NASA Group Achievement Award to the MAVEN Phase B Team – 2011
    • NASA Group Achievement Award to the Gas Chromatograph and Mass Spectrometer on the Huygens Titan Probe, 2007.
    • IRAD Innovator of the Year Award - 2007
    • NASA Group Achievement Award to the Cassini Huygens Gas Chromatograph Mass Spectrometer Experiment Team – 2006.
    • NASA Group Achievement Award to the Cassini Ion and Neutral Mass Spectrometer – 2005.
    • Laboratory for Atmospheres General Recognition Award - 2004
    • Laboratory for Atmospheres Technology Award – 2000
    • NASA Group Achievement Award for the Cassini Program/Gas Chromatograph Mass Spectrometer Experiment Team – 1998.
    • NASA Group Achievement Award for the Cassini Ion and Neutral Mass Spectrometer (INMS) and the Huygens Probe Gas Chromatograph Mass Spectrometer Experiment Team – 1998.
    • NASA Group Achievement Award for the Galileo Probe Mass Spectrometer Experiment Team – 1996.
    • NASA Group Achievement Award for the Galileo Probe Spacecraft Development Team – 1992.
    • Technical Officer Procurement Award – 1988.

    Selected Publications

    Refereed

    Franz, H. B., M. G. Trainer, M. H. Wong, et al. H. Manning, J. C. Stern, P. R. Mahaffy, S. K. Atreya, M. Bennaa, P. G. Conrad, D. N. Harpold, L. A. Leshin, C. A. Malespin, C. P. McKay, J. T. Nolan, and E. Raaen. 2014. "Analytical Techniques for Retrieval of Atmospheric Composition with the Quadrupole Mass Spectrometer of the Sample Analysis at Mars Instrument Suite on Mars Science Laboratory." Planet. Space Sci., [10.1016/j.pss.2014.03.005]

    Mahaffy, P. R., C. R. Webster, S. K. Atreya, et al. H. Franz, M. Wong, P. G. Conrad, D. Harpold, J. J. Jones, L. A. Leshin, H. Manning, T. Owen, R. O. Pepin, S. Squyres, and M. Trainer. 2013. "Abundance and Isotopic Composition of Gases in the Martian Atmosphere from the Curiosity Rover." Science, 341 (6143): 263-266 [10.1126/science.1237966]

    Brief Bio

    Dan Harpold has been involved in numerous space flight mass spectrometer experiments for 50 years. These include earth orbiting, cometary and planetary missions. He was Co-I on the OGO VI Neutral Mass Spectrometer; Co-I on the Galileo Probe Mass Spectrometer, Co-I on the NOZOMI (Planet B) Neutral Mass Spectrometer and Co-I on the Huygens Gas Chromatograph Mass Spectrometer (GCMS) and the principal mechanical systems engineer on both the Cassini GCMS and the Cassini Ion and Neutral Mass Spectrometer. He was a key participant in the design, development, assembling and testing of all the above listed instruments. He had similar responsibilities for the Neutral Gas and Ion Mass Spectrometer on the CONTOUR mission that was launched in July 2002. In addition, he was the element lead for the Quadrupole Mass Spectrometer (QMS) and the Gas Processing System (GPS) in the Sample Analysis at Mars (SAM) instrument suite on board the Mars Science Laboratory/Curiosity Rover. In this capacity he was responsible for the proper design, development and building of the QMS and a wide range of components comprising the GPS. He was also the element lead for the QMS flown on the LADEE mission that orbited the moon and the MAVEN mission that was placed in orbit around Mars in 2014. He currently supports the design, assembly and testing of the Mars Organic Molecular Analyzer (MOMA) mass spectrometer. He has served as Technical Officer on numerous contracts relating to development of space flight instruments and components and has been Co-PI on a GSFC IR&D effort to miniaturize a gas chromatograph mass spectrometer system utilizing MEMS technology and for a high pressure/high temperature capillary leak array that could be used on an entry probe mission onto the surface of Venus. He was a co-recipient of a patent for this effort.

    Selected Publications

    Refereed

    Franz, H. B., M. G. Trainer, M. H. Wong, et al. H. Manning, J. C. Stern, P. R. Mahaffy, S. K. Atreya, M. Bennaa, P. G. Conrad, D. N. Harpold, L. A. Leshin, C. A. Malespin, C. P. McKay, J. T. Nolan, and E. Raaen. 2014. "Analytical Techniques for Retrieval of Atmospheric Composition with the Quadrupole Mass Spectrometer of the Sample Analysis at Mars Instrument Suite on Mars Science Laboratory." Planet. Space Sci. [10.1016/j.pss.2014.03.005]

    Mahaffy, P. R., C. R. Webster, S. K. Atreya, et al. H. Franz, M. Wong, P. G. Conrad, D. Harpold, J. J. Jones, L. A. Leshin, H. Manning, T. Owen, R. O. Pepin, S. Squyres, and M. Trainer. 2013. "Abundance and Isotopic Composition of Gases in the Martian Atmosphere from the Curiosity Rover." Science 341 (6143): 263-266 [10.1126/science.1237966]

                                                                                                                                                                                            
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