High Enthalpy
Arc plasma studies offer unique ground-based simulation of flight-entry conditions, capabilities critical to current and next-generation thermal protection systems
Because space exploration necessitates rugged structures, components and elements to protect both astronauts and instruments from the extreme environments encountered during missions, extensive testing is essential when qualifying new thermal protection systems (TPS) materials. Such studies explore the limits of TPS performance to validate reliability and durability, investigate the effects of damage, and assess results to develop a full database of material properties.
Overseen by the Thermophysics Facilities Branch at NASA Ames Research Center, arc plasma studies offer unique ground-based simulation of flight-entry conditions: capabilities critical to current and next-generation TPS. Four individual test facilities, supported by common electrical, vacuum, and cooling systems, comprise the Complex. Pre-mixed air, heated to extreme temperature by a high-power, direct-current discharge, expands through user-selected conical, semi-elliptical, and channel nozzles to hypersonic velocities similar to those experienced by entry vehicles.
Arc jet testing is conducted on fully instrumented samples, incorporating in-situ miniaturized heat flux, temperature and recession sensors. Maximizing test utility by enabling active test data—such as time-history of recession—further aids in the development of an extensive database of in-depth thermal response and surface ablation.
Read more about the Arc Jet Complex.
To arrange testing in this facility, please contact George Raiche or email hq-setmo@mail.nasa.gov.