Spacecraft Charging - Hazard Causes, Hazard Effects, Hazard Controls

Explore spacecraft charging hazards, their causes, effects, and control measures in this comprehensive seminar presented by Steven Koontz, ISS System Manager for Space Environments. Delve into the interdisciplinary nature of spacecraft charging analysis, combining electrostatics, plasma physics, ionizing radiation, and materials science. Examine how interactions with space plasmas, energetic charged particles, solar UV photons, and spacecraft systems lead to charge accumulation. Learn about the specific charging environments encountered by the International Space Station (ISS) in low Earth orbit and compare ISS charging measurements with numerical modeling. Investigate the unique challenges of spacecraft charging in Earth's magnetosphere and cis-Lunar space, and assess the applicability of ISS charging management techniques to future human spaceflight missions beyond LEO. Gain insights into various spacecraft charging environments, including the LEO ionosphere, magnetosphere, and geosynchronous orbit, as well as internal charging processes.

Intro
Executive Summary
Presentation Outline
and Processes: General Principles Why do we care about this?
and Processes: Spacecraft Charging Summary
and Processes: Summary charging discharging circuit
and Processes: General Principles. Internal vs. Surface Charging
Metal structure with thin dielectric coating - ISS MM/OD shields
The Charge Balance Equation
Spacecraft Charging Environments: LEO Ionosphere
LEO: Ionospheric Plasma and Geomagnetic Field Charging Environments
Spacecraft Charging Environments: Magnetosphere and GEO
Environments: Geomagnetic Storm and Aurora
Spacecraft Charging Environments and Processes Space Plasmas and Energetic Particles
Space Plasma Environments - The Numbers
Energetic Charged Particle Environments
Spacecraft Surface Charging Environment Risks: Geo-space
A Simple Worked Example: Solar Array Driven Charging in
ISS Charging Measurements: Floating Potential Measurement
The other place you might not expect...
LEO Auroral Charging Environments
Another Simple, Worked Example: Auroral Charging vs. Capacitance
GEO and Interplanetary Charging Environments
Internal Charging