A5014899793- Fire dynamics and safety research
- Combustion and Detonation Processes
- Combustion and flame dynamics
- Advanced Combustion Engine Technologies
- Rocket and propulsion systems research
- Flame retardant materials and properties
- Atmospheric chemistry and aerosols
- Radiative Heat Transfer Studies
- Spacecraft and Cryogenic Technologies
- Wind and Air Flow Studies
- Evacuation and Crowd Dynamics
- Space Exploration and Technology
- Risk and Safety Analysis
- Spacecraft Design and Technology
- Planetary Science and Exploration
- Catalytic Processes in Materials Science
- Spaceflight effects on biology
- Advanced Aircraft Design and Technologies
- Transportation Safety and Impact Analysis
- Atmospheric aerosols and clouds
- Fire Detection and Safety Systems
- Gas Dynamics and Kinetic Theory
- Computational Fluid Dynamics and Aerodynamics
- Advanced Battery Technologies Research
- Thermochemical Biomass Conversion Processes
Glenn Research Center
2015-2025
Agenzia Spaziale Italiana
2024-2025
College of Polytechnics Jihlava
2021-2023
National Aeronautics and Space Administration
2009-2023
Johnson Space Center
1998-2023
Australian Radiation Protection and Nuclear Safety Agency
2017-2022
NASA Research Park
2009
University of Maryland, College Park
2008
American Institute of Aeronautics and Astronautics
1998
University of Michigan
1998
The Sun is the astrophysical object which exerts greatest influence on Earth and its surrounding. Solar particles electromagnetic radiation emissions significantly impact space assets manned exploration missions. Specifically, solar flares expose astronauts to dangerous acute biological doses, cause outages of satellite operations, and, in most extreme form, even blackout electrical grid ground. Despite increasing interest flare activity last decades, new observations continue disclose...
Observations of the structure and soot properties round, soot-emitting, nonbuoyant, laminar jet diffusion flames are described, based on long-duration (175-230 s) experiments at microgravity carried out orbit in Space Shuttle Columbia. Experimental conditions included ethylene-fueled burning still air nominal pressures 50 100 kPa an ambient temperature 300 K with luminous flame lengths 49-64 mm. Measurements shapes using color video imaging, concentration (volume fraction) distributions...
A novel thin-filament pyrometer is presented. It involves a consumer-grade color digital still camera with 6 megapixels and 12 bits per plane. SiC fibers were used scanning-electron microscopy found them to be uniform diameters of 13.9 micro m. Measurements performed in methane-air coflowing laminar jet diffusion flame luminosity length 72 mm. Calibration the was accomplished B-type thermocouples. The pyrometry measurements yielded gas temperatures range 1400-2200 K an estimated uncertainty...
An experimental investigation on the effects of buoyancy opposed-flow smolder is presented. Tests were conducted cylindrical samples open-cell, unretarded polyurethane foams at a range ambient pressures using Microgravity Smoldering Combustion (MSC) apparatus. The tested in opposed configuration, which flow oxidizer induced opposite direction propagation front. These data compared with opposed-forced-flow tests aboard STS-69, STS-77, and STS-105 their ground-based simulations. Thermal...