Temperature, Pressure, and Radiation in Reference Missions. Pressure vs. Temperature. Radiation vs. Temperature. Pressure ( bars). Radiation( MRad). 1000. 10. Europa Surface and Subsurface. Jupiter Probes. 100. 10. 1.0. Venus Surface Exploration. Titan In-Situ. Earth. 1.0.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Temperature, Pressure, and Radiation in Reference Missions
Pressure vs. Temperature
Radiation vs. Temperature
Pressure ( bars)
Temperature ( C)
Temperature ( C)
Summary of Reference Mission Technology Needs
Challenge: All reference missions have to survive and operate in extreme temperature, pressure, and radiation environments.
Objective: Obtain Measurements to explain the general circulation of the Venus atmosphere
Approach: Long-lived balloons and Orbiter
Balloon Deployment Approach
Zonal Wind (m/s)
Enhanced Oil Recovery
High Temperature Limits of Conventional Components
Technological Limits for Components
Extreme high temperature/high pressure environments are unique to NASA missions
Hard solders melt at ~ 400 C
TFE Teflon degenerates at 370 C
Silicon electronics can’t operate above 350 C
Limit of commercial and military applications is currently about 350 C
Magnets and actuators operational limit is ~ 300-350 C
Soft solders melt at about ~180 C
Connector problems start at ~150 C
Water boils @ 1 atm at 100 C
Power: Battery systems
All reference missions need advanced thermal control to survive and operate in extreme temperature and pressure.