Engineering-Evidence Layer¶
The engineering-evidence layer contains validation chains that connect a calculation method to physical or experimentally grounded engineering data. Unlike solver-sanity anchors, these records are not only about whether the math is implemented correctly. They document why a result can support a particular engineering claim inside a defined applicability region.
First public scoped gas-bearing anchor
The registry now contains the first public scoped Breshev gas-bearing
method-chain anchor:
VCR_BRESHEV_CONICAL_P05_METHOD_CHAIN_001.
First public Breshev gas-bearing method-chain anchor¶
Entry: VCR_BRESHEV_CONICAL_P05_METHOD_CHAIN_001
Scope: conical aerostatic bearing, P05 method-chain validation.
What it links:
- Industrial / experimental spindle evidence from the Breshev research line.
- FEM / МКЭ results validated against experimental load-capacity data.
- The Breshev perturbation method / МВ used as the calculation basis in AURA.
- Supporting PM-vs-FEM comparisons for the documented conical bearing family.
Reported residuals¶
| Chain part | Quantity | Worst residual | Role |
|---|---|---|---|
| FEM vs experiment, P05 | Load capacity | 3.938% | Experimental grounding of the FEM route |
| PM/AURA vs validated FEM route, P05 | Axial stiffness | 7.143% | Method-chain support |
| PM vs FEM, P04 | Load capacity | 7.692% | Supporting comparison |
These residuals make the entry suitable as a public scoped engineering-evidence anchor. They do not upgrade the full AURA platform to universal gas-bearing validation.
What this anchor supports¶
This anchor supports the statement:
The Breshev perturbation-method workflow used in AURA is supported by an experimentally grounded FEM route for the documented conical aerostatic bearing family.
What this anchor does not support¶
It does not support the following claims:
- Full universal validation of all gas-bearing configurations.
- Full L5 Breshev Validation Chain completion.
- Validation of cylindrical journal bearings.
- Engineering-freeze-grade validation for arbitrary rotor-bearing systems.
- Direct validation of every AURA module.
Why this matters¶
This anchor is the first public record connecting the BVC methodology to the specialized domain where AURA has its strongest intellectual foundation: aerostatic gas-bearing rotor systems. It is intentionally scoped. Its value is not that it proves everything; its value is that it proves one documented chain without overclaiming.
Next engineering-evidence targets¶
Planned next records include:
- Conical bearing radial-load / clearance comparison.
- Perturbation K/C anchor for dynamic coefficients.
- CFD-vs-perturbation comparison.
- Experimental spindle correlation.
- Gas-bearing-to-rotor-dynamic chain validation.