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  TECHNOLOGY DEVELOPMENT ACTIVITY - Current Funded Activities

LIST OF OTHER SEE ACTIVITIES:

Historical Archive Data Mining – Apollo Era Literature Search for Materials, Environments,
and Lessons Learned


Organization:  Marshall Space Flight Center
Principal Investigator:  Dave Edwards
Status:  Start date currently in formulation; 1 year effort

Objectives:

  • Data mining to gather information on Apollo Era studies, investigation, and lessons learned;
  • Develop an electronic database of past literature and large quantities of archived data from experiments, material test programs, etc.;
  • To enable rapid development of operational systems through the capture of historical Apollo experiences.

Paschen Discharge Design Guidelines for Manned Moon and Mars Missions

Organization:  Glenn Research Center
Principal Investigators:  Drs. Dale Ferguson and Barry Hillard
Status: Start date currently in formulation; 1 year effort

Objectives:

  • Develop preliminary design guidelines to mitigate against Paschen Discharge
  • Leverages existing work from the MSFC Spacecraft High Voltage Guidelines
  • Provides design engineers with a greater understanding of Paschen Discharge and Corona concerns

Solar Particle Risk Assessment Tool (SPRAT)

Organization:  Goddard Space Flight Center
Principal Investigator:  Mike Xapsos
Status:  Start date is scheduled for June 1, 2004

Objectives:

  • Much data (solar particle events) has been gathered leveraging the three-year effort under the 2001 SEE Program NRA;
  • This effort will provide a comprehensive description of solar heavy ion exposures (see 2001 SEE NRA awarded activity for SPRAT information).

Contamination Mitigation Technologies Development

Organization:  Marshall Space Flight Center
Principal Investigator:  Keith Albyn
Status:  Start date currently in formulation; 1 year effort

Objectives:

  • Identify technologies for lunar surface contamination analysis;
  • Evaluate technologies for the removal of lunar dust from surfaces in a lunar environment;
  • Identify mechanisms for cleaning/containing lunar dust and other surface contaminants from surfaces such as EVA Suites and tools.

Lunar-Charged Particle Environment (Lunar-CPE)

Organization:  Jacobs-Sverdrup
Principal Investigator:  Joe Minow
Status:  Start date currently in formulation; 1 year effort 

Objectives:

  • Update L2-CPE model (applicable over -100 Re < Xgse < -300 Re) to include outer
    magnetosphere (>6 Re), through lunar (60 Re) and lunar to -100 Re environments;
  • Provides ion, electron flux and fluence for spacecraft charging and radiation degradation analysis; Model derived fron ion, electron flux measurements which provides statistical environments (e.g., percentile electron, ion flux at 50%, 95% level).

Mars Atmosphere Radiation Transport Properties

Organization:  Jacobs-Sverdrup
Principal Investigator:  Katherine Harine
Status:  Start date currently in formulation; 1 year effort 

Objectives:

  • Obtain known Martian atmosphere composition and possible variations;
  • Exercise Monte Carlo radiation transport code, MCNPX, to determine scattering effects of Mars atmosphere.

Ionizing Radiation Guidelines

Organization: SAIC; Consultant; MSFC
Principal Investigators:  Hugh Anderson; Jim Howard; Donna Hardage
Status:  Scheduled Completion; This activity has been put on hold indefinitely due to the SEE Program transferring to the new exploration systems enterprise.

Objectives:

  • Develop and publish Design Guidelines for Ionizing Radiation;
  • The guidelines will focus on the Program Manager, Design Engineer and Space Radiation Engineer (0-5 yrs exp).

L2- Charge Particle Environment (L2-CPE)

Organization:  Jacobs Sverdrup
Principal Investigator:  Joe Minow
Status:  Scheduled Completion - Currently in "beta" test; Version 1.0 release scheduled for Spring 2004.

Objectives:  Develop a semi-empirical engineering model of electrons and ions (from a few 100’s eV to approximately 1 MeV) that include the thermal plasma distributions as well as bulk flow effects in the distant magnetotail.

Meteoroid Engineering Model (MEM)

Organization:  University of Western Ontario; MSFC
Principal Investigators:  Jim Jones; Bill Cooke, Heather Lewis

Objectives:

  • Develop a universal model applicable to Earth-orbiting and interplanetary spacecraft for
    “sporadic” (or “background”) and stream meteoroids;
  • Model is “physics-based” so Earth observations are only used for validations.  Model also allows for extrapolation to other locations that is not possible with existing empirical models;
  • Existing models yield only decent results for spacecraft in LEO. Not valid at all for fixed
    orientation spacecraft like NGST, MAP, etc.

Electronic Properties of Materials with Applications to Spacecraft Charging

Organization:  Utah St
Principal Investigator:  J.R. Dennison
Status:  Continuous Ongoing Effort; See “Charge Collector

Objectives:

  • Determine the electrical properties for a wide array of spacecraft materials and integrate this new information into relevant NASA databases and models;
  • Specifically, measure secondary and backscattered electron total yields from electron-induced, ion-induced and photon-induced energies;
  • Samples include conductors, insulators and spacecraft specific materials.

Geospace Environment Implications for Spacecraft (Thermosphere/Ionosphere)

Organization:  AFRL Hanscom Air Force Base
Principal Investigators:  Frank Marcos; Dwight Decker
Status:  Scheduled Completion - July, 2004

Objectives:

  • Develop density and solar proxy databases from orbital drag data;
  • Improve solar EUV inputs to replace F10.7 in MET to improve MET density versus altitude and latitude;
  • Develop data fusion techniques and algorithms;
  • Develop a high-latitude scintillation and forecast tool.

LEO Plasma Environment Variability

Organization:  Jacobs Sverdrup
Principal Investigator:  Joe Minow
Status:  Scheduled Completion - June 2005

Objectives:

  • Provide a plasma variability database for use in spacecraft design, mission planning and spacecraft operations;
  • Develop models to specify statistical variations of plasma parameters (Ne, Te, Ni, Ti) in LEO environments (~200 km to 2000 km).

Empirical Low Energy Ion Flux Model for the Terrestrial Magnetosphere

Organization:  Jacobs Sverdrup
Principal Investigator:  Joe Minow
Status: Scheduled Completion - June, 2005

Objectives:

  • Develop an empirical ion model of the Earth’s magnetosphere incorporating ion flux observations from multiple satellites in a statistical flux model;
  • Provide an improved predictive tool of magnetospheric ion flux values for varying geomagnetic disturbance levels in the geospace environment;
  • Incorporates ion flux observations from multiple spacecraft in a single statistical flux model that will yield a simple technique for assimilating data from networks of research spacecraft.
     

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