Aaron M. Brandis
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View article: Treatment of Thermal Non-Equilibrium Dissociation Rates: Application to $\rm H_2$
Treatment of Thermal Non-Equilibrium Dissociation Rates: Application to $\rm H_2$ Open
This work presents a detailed description of the thermochemical non-equilibrium dissociation of diatomic molecules, and applies this theory to the case of $\rm H_2$ dissociation. The master equations are used to derive corresponding aggreg…
View article: Correction: Stagnation-Point Aeroheating Correlations for Mars Entry
Correction: Stagnation-Point Aeroheating Correlations for Mars Entry Open
Covers advancements in spacecraft and tactical and strategic missile systems, including subsystem design and application, mission design and analysis, materials and structures, developments in space sciences, space processing and manufactu…
View article: Entry, Descent, and Landing Instrumentation
Entry, Descent, and Landing Instrumentation Open
The first purpose of this white paper is to summarize the state-of-the-art of engineering instrumentation available for atmospheric Entry, Descent, and Landing (EDL) vehicles.Capabilities of the various types of measurements, along with re…
View article: Aerothermal Modeling Challenges for Ice Giant Entry Probes
Aerothermal Modeling Challenges for Ice Giant Entry Probes Open
<p>In June 2017, NASA published the Ice Giants Pre-Decadal Survey Mission Study Report which took a fresh look at science priorities and mission concepts for missions to the Uranus and Neptune systems. In addition to science objectiv…
View article: Aerothermal Modeling Challenges for Entry Descent and Landing Missions
Aerothermal Modeling Challenges for Entry Descent and Landing Missions Open
Keynote presentation highlighting aerothermal modeling needs for EDL, with specific emphasis on areas where improved ground test diagnostics and instrumentation could help.
View article: One-dimensional modeling methodology for shock tubes: Application to the EAST facility
One-dimensional modeling methodology for shock tubes: Application to the EAST facility Open
In this work, a one-dimensional methodology for simulating shock tubes is developed. The model accounts for the viscous interactions of the shock with the shock tube wall by adding an area change source term in the 1-D conservation equatio…
View article: Applications of Radiative Heating for Space Exploration
Applications of Radiative Heating for Space Exploration Open
Vehicles entering planetary atmospheres at high speeds (6 - 12 kms) experience intense heating by flows with temperatures of the order 10 000K. The flow around the vehicle experiences significant dissociation and ionization and is characte…
View article: Titan Atmospheric Entry Radiative Heating
Titan Atmospheric Entry Radiative Heating Open
Detailed spectrally and spatially resolved radiance has been measured in the Electric Arc Shock Tube for conditions relevant to Titan entry, varying atmospheric composition, free-stream density (equivalent to altitude) and shock velocity. …
View article: Experimental and Numerical Investigation of Air Radiation in Superorbital Expanding Flow
Experimental and Numerical Investigation of Air Radiation in Superorbital Expanding Flow Open
To investigate air radiation in expanding flows and provide experimental data for validating associated computational models, experiments were conducted in the X2 expansion tunnel facility at the Centre for Hypersonics of the University of…
View article: Experiment Design and Characterization for the Study of Afterbody Radiation During Mars Entry
Experiment Design and Characterization for the Study of Afterbody Radiation During Mars Entry Open
Recent work has shown that a significant contributor to the afterbody aeroheating during Mars entry is radiation. However, relevant ground test data is not available to help assess the uncertainty associated with prediction of the radiatio…
View article: NEQAIR v14.0 User Tutorial
NEQAIR v14.0 User Tutorial Open
Presentation to cover how to use and understand the NEQAIR code. The avenues to obtain the code will also be discussed.
View article: Investigation of Non-Equilibrium Radiation for Earth Entry
Investigation of Non-Equilibrium Radiation for Earth Entry Open
This paper presents measurements and simulations of non-equilibrium shock layer radiation relevant to high-speed Earth entry data obtained in the NASA Ames Research Center's Electric Arc Shock Tube (EAST) facility. The experiments were aim…
View article: Radiative Heating for MSL Entry: Verification of Simulations from Ground Test to Flight Data
Radiative Heating for MSL Entry: Verification of Simulations from Ground Test to Flight Data Open
The heat shield of the Mars Science Laboratory (MSL) was equipped with thermocouplestacks to measure in-depth heating of the thermal protection system during atmosphericentry. The heat load derived from the thermocouples in the stagnation …