Work

Ballistic range experimental results of radiating wakes of spheres at Mach 10

Year: 2025

Type: article

Abstract: Hypersonic flow field can experience significant thermochemical nonequilibrium effects. However, very little ground test data exists for nonequilibrium hypersonic wake flows. Simulating air chemistry in nonequilibrium is highly challenging due to the lack of validation data. To address a lack of validation data, ballistic free flight tests were conducted examining nonequilibrium chemistry effects in the wake of 25 mm spheres at Mach 10. A laser-based diagnostic system was used to measure naturally-produced nitric oxide concentrations. Measurements were made up to 53 body diameters behind the sphere. NO concentrations in the wake peaked between 4.1 +/- 0.8% and 6.8 +/- 1.3%.

Source: Applied Optics

DOI: 10.1364/ao.546959

Authors: Robert B. MacDermott, Nicholas J. Mueschke, Naibo Jiang, Paul S. Hsu, Sukesh Roy

Institutions: Southwest Research Institute, Spectral Energies (United States)

Language: English

Topic: Gas Dynamics and Kinetic Theory

Subfield: Applied Mathematics

Field: Mathematics

Domain: Physical Sciences

Open Access status: gold

Funders: U.S. Air Force, Air Force Institute of Technology

OpenAlex ID: W4408217930