Conveners
Radiation modeling and simulation: Monday morning 1
- Brett Cruden (AMA Inc/NASA Ames)
Radiation modeling and simulation: Monday morning 2
- Brett Cruden (AMA Inc/NASA Ames)
Radiation modeling and simulation: Tuesday afternoon 1
- Stefan Loehle (IRS, HEFDiG)
Radiation modeling and simulation: Wednesday afternoon 1
- Christian Mundt
Radiation modeling and simulation: Wednesday afternoon 2
- Mario Lino da Silva (Instituto de Plasmas e Fusão Nuclear - Instituto Superior Tecnico)
Radiation modeling and simulation: Thursday morning 1
- Markus Fertig (German Aerospace Center)
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Dr Aaron Brandis (NASA Ames Research Center)21/09/2026, 09:30Entry, Descent, and Landing Instrumentation
NASA Ames and Langley are partnering with DLR to propose a comprehensive instrumentation suite known as the Dragonfly Entry Aerosciences Measurements (DrEAM). DrEAM will provide key aerothermodynamic data and performance analysis for Dragonfly’s forebody and backshell Thermal Protection System (TPS), and also includes a DLR-provided Data Acquisition System (DAS). Titan’s atmosphere...
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Timothy Aiken (University of Colorado)21/09/2026, 10:00Radiation Modeling and Simulation
Background
NASA’s Dragonfly mission, which aims to deliver a rotorcraft to Saturn’s moon Titan, must withstand extreme
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convective and radiative heating during its entry into the moon’s dense nitrogen-methane atmosphere. Because of strongly radiating species, particularly the cyanogen (CN) radical, the forebody radiative heating can be as much as 50% of the total heat flux,... -
Mario Lino da Silva (Instituto de Plasmas e Fusão Nuclear - Instituto Superior Tecnico)21/09/2026, 11:00Ablative-Radiative TPS and Meteors
What are the asymptotic limits of high-speed flows? Many years ago, it was postulated that post-shock temperatures would eventually reach a cap postulated to be around 20,000K, as increasing shock speeds would lead to endothermic processes offsetting the additional energy processed through the shock. These include, the excitation of a plethora of higher energy levels known to exist near...
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Tiago Garrão21/09/2026, 11:30Radiation Modeling and Simulation
We present a loosely coupled radiative transfer analysis for superorbital Earth entry, targeting the strongly radiating shock layers encountered at entry velocities in the 18-25 km/s range characteristic of sample-return and high-energy return trajectories. At such velocities the post-shock gas reaches temperatures at which radiative heating becomes a leading contributor to the total wall heat...
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212. Sensitivity Analysis of Reaction Rate Uncertainties on Radiation in H2/He Ice Giant Entry FlowsJulien Clotuche (Université de Liège)22/09/2026, 14:00Radiation Modeling and Simulation
During high-speed atmospheric reentry, radiation can make up to 20% of peak heating, as demonstrated by the Electric Arc Shock Tube (EAST) at the Ames Research Center. This means that thermal protection design requires accurate radiation modeling during reentry. This subject is of particular interest at the moment because both NASA [10, 9] and ESA [14] are considering missions that would enter...
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Cate Leszcz (University of Colorado Boulder)22/09/2026, 14:30Radiation Modeling and Simulation
Background
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The 2023 Planetary Science Decadal Survey has deemed a mission to the Ice Giant planets a high priority for the next NASA Flagship Mission.$^1$ In order to safely enter hydrogen-helium-methane (H$_2$/He/CH$_4$) atmospheres that are characteristic of the Ice Giants, it is important to accurately characterize the aerothermal environment around the entry vehicle to predict... -
Dr Thomas West (NASA)22/09/2026, 15:00Radiation Modeling and Simulation
Introduction
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The 2023 Decadal Survey [1], published by the National Academies of Sciences, Engineering, and Medicine, concluded that "The highest priority new Flagship mission for the decade 2023–2032 is the Uranus Orbiter and Probe mission". Part of the Uranus Orbiter and Probe (UOP) mission [2] that was used to inform the Decadal study was an entry probe to make scientific measurements... -
Amal Sahai (AMA Inc. at NASA Ames Research Center)23/09/2026, 14:00Radiation Modeling and Simulation
Objective
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The radiation field arising from photophysical and photochemical processes can significantly influence energy transfer and thermochemical composition in a range of scientific and engineering applications. The primary challenge while determining radiative transfer stems from the rapid fluctuations in emission/absorption properties with respect to frequency. Fundamental radiative... -
Joaquim Nogueira23/09/2026, 14:30Plasma Facilities, Simulations and Diagnostics
Background
Hypersonic flows are characterized by strong thermochemical nonequilibrium and complex physical phenomena, making both experimental investigations and numerical simulations particularly challenging. Trustworthy and scalable computational tools are therefore essential for the study of atmospheric entry, hypersonic flight, and other high-enthalpy aerothermodynamic applications....
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Dr Marco Fabiani (Sapienza University of Rome)23/09/2026, 15:00Radiation Modeling and Simulation
High-temperature thermal radiation is a long-standing modeling challenge shared by very different classes of high-enthalpy flows, from atmospheric re-entry to chemical rocket propulsion. In rocket engines, the combustion products of solid, hybrid and liquid propellants (H$_2$O, CO$_2$, CO, soot for hydrocarbon-fuelled systems, and Al$_2$O$_3$ particles for aluminized propellants) behave as...
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Salvatore Esposito (CIRA)23/09/2026, 16:00Radiation Modeling and Simulation
High-temperature exhaust plumes may represent a significant source of infrared radiation in propulsion-related high-speed flows. Their emission depends on the local thermochemical state of the gas, the spatial distribution of radiating species, self-absorption along the optical path, and the viewing direction. A consistent coupling between CFD flow-field solutions and spectrally resolved...
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Christian Mundt23/09/2026, 16:30Radiation Modeling and Simulation
Radiation emitted at high altitude is modified as it propagates through Earth’s upper
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atmosphere toward space-based observers. Even in the rarefied upper atmosphere, long path
lengths and strongly wavelength-dependent absorption and scattering processes can lead to
substantial attenuation depending on spectral region, source altitude, and viewing geometry. In this
work, wavelength-resolved... -
Jaejeong Na (Aerospace Integrated Wind Tunnel Center, Seoul National University, South Korea)24/09/2026, 09:00Radiation Modeling and Simulation
Topic
Experimental and numerical modelling improvements of radiative heat transfer: refinement, verification, validation and comparison for space object re-entry simulation toolsBackground
Radiative heating dominates the total heat load for vehicles entering planetary atmospheres above 10 km/s. The FIRE II flight experiment [1] measured stagnation-point radiative fluxes of...
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Justin Clarke (Oxford University)24/09/2026, 09:30Radiation Modeling and Simulation
Introduction
The vast distances between Earth and other celestial bodies within our solar system requires space vehicles to transit between them with very large velocities. This ensures transit time is not prohibitively long, however results in vehicles entering the destination atmosphere with an extremely high velocity. This in turn requires significant deceleration of the vehicle upon...
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Kaelan Hansson (AMA Inc at NASA Ames)24/09/2026, 10:00Radiation Modeling and Simulation
The Mars Sample Retrieval lander mission was designed to be the first stage of NASA's Mars Sample Return program. It would land a stationary payload to process samples collected by the Perseverance rover and place them on board a rocket for their journey to Earth. In total, the lander would be the largest entry mass and volume ever placed on the Martian surface. Furthermore, the entry speed,...
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