The purpose of SAE J1594 (OCT2025) is to provide a common nomenclature (set of terms and definitions) for use in the automotive and mobility industries, specifically when dealing with vehicle aerodynamics.
This standard ensures that engineers, researchers, and manufacturers around the world use the same language and conventions when communicating data, publishing reports, and performing tests related to how air interacts with a road vehicle.
Typical Usage
The standard is primarily used by vehicle aerodynamicists, design engineers, and testing facilities, including wind tunnels. It establishes a uniform way to describe and report key measurements, forces, and components, which is critical for **aerodynamic development** and research aimed at improving vehicle performance and efficiency.
Key areas and conventions covered typically include:
By using this standardized terminology, the industry ensures that aerodynamic data is **clear, comparable, and consistent** across different tests, companies, and international publications.
| SDO | SAE: SAE International |
| Document Number | J1594 |
| Publication Date | Oct. 2, 2025 |
| Language | en - English |
| Page Count | 13 |
| Revision Level | 202510 |
| Supercedes | |
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