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Ohio State scientists advance focus on nuclear propulsion

Researchers at Ohio State University are developing a new nuclear thermal propulsion system, called the centrifugal nuclear thermal rocket (CNTR), which could potentially double an engine's efficiency. The CNTR concept aims to improve rocket performance while minimizing risk and enabling faster travel times to distant destinations.

SourceOhio State University·JournalActa Astronautica·DateSep 11, 2025

KAIST develops AI-driven performance prediction model to advance space electric propulsion technology​

The KAIST research team developed an AI-based technique to accurately predict Hall thruster performance, significantly reducing the time and cost associated with iterative design, fabrication, and testing. The trained neural network ensemble model offers detailed analyses of performance parameters, accounting for key design variables.

SourceThe Korea Advanced Institute of Science and Technology (KAIST)·JournalAdvanced Intelligent Systems·TypeExperimental study·DateFeb 4, 2025

The roar and crackle of Artemis 1

Researchers measured noise levels at locations around the launch pad, finding maximum sound levels exceeded predicted values by nearly 20 decibels. The study's findings will help validate and improve existing noise prediction models to protect equipment and surrounding environments.

SourceAmerican Institute of Physics·JournalJASA Express Letters·DateFeb 14, 2023

Finding the cause of a fatal problem in rocket engine combustors

Researchers found significant periodic flow velocity fluctuations in fuel injector ignite combustion oscillations, leading to high mechanical stress on the combustion chamber. The findings provide a reasonable answer for why these oscillations occur and have significant implications for preventing fatal damage in critical engines.

SourceTokyo University of Science·JournalPhysics of Fluids·TypeData/statistical analysis·DateAug 2, 2021

Roger scramjet

A new kind of cruise missile engine, called a scramjet, has been tested to achieve Mach 6.5 speeds in simulated hypersonic conditions, outperforming traditional ramjets. The engine is being developed for use in the HyFly joint DARPA/ONR Flight Demo program, aiming to launch missiles at speeds up to Mach 6 and ranges of 600 nautical miles.