Bench validation state
Record the test article, build standard, bearing/support configuration, sensor chain, control state and acceptance basis. A rig result belongs to that controlled state.
AURA application · scoped engineering support
Gas-bearing and release-evidence workflow for oil-free and hydrogen compressor rotors.
AURA supports the bearing-and-rotor decision layer: support architecture, coefficient provenance, high-speed dynamic screening, validation-state mapping and operating-envelope transfer. It does not claim the complete compressor, hydrogen-safety or certification authority.
Engineering basis
Start from the state that produced the evidence.
Gas, pressure and thermal basis
Preserve gas composition, pressure ratio, inlet state, temperature field, material growth and the clearance state behind each coefficient or test result.
Connected workflow
Five linked questions for a high-speed oil-free rotor.
1 · Bearing and rotor architectureSupport family, locations, preload/adjustment concept, shaft/tool or impeller interfaces, load path and speed corridor.
2 · High-speed bearing coefficientsLoad, flow, direct and cross-coupled stiffness/damping with geometry, clearance, gas state, method and provenance attached.
3 · Start–stop and durability dutyTransient contact risk, thermal movement, repeated cycling, dwell, overspeed and service-event history as part of the applicability boundary.
4 · Rotor-dynamic screeningCritical-speed separation, Campbell behaviour, unbalance response, stability, orbit and clearance-facing margin from the connected support state.
5 · Operating-envelope transferCompare the validated bench state with the intended site gas, pressure ratio, temperature, mounting, control and duty before carrying evidence forward.
Scope discipline
What AURA supports now — and what remains outside the claim.
Supported now
- Bearing/rotor architecture and configuration basis
- Coefficient provenance and applicability mapping
- High-speed rotor-dynamic screening
- Validation-state and interface mapping
- Operating-envelope evidence and transfer check
Outside the present claim
- Complete fuel-cell or hydrogen compressor design
- Aerodynamic compressor map and stage design
- Production certification or regulatory approval
- Complete hydrogen-safety qualification
- Universal bearing performance without case-specific evidence
Decision package
The deliverable is a bounded engineering basis.
Physical state
Architecture, geometry, material, gas, pressure, thermal, mounting, control and duty assumptions.
Evidence state
Calculation and test provenance, residuals, gaps, interface compatibility and transfer conditions.
Allowed decision
What supports screening, what requires test, what remains review-only and which change invalidates transfer.
Claim boundary: Hydrogen applications carry domain-specific safety, materials, sealing, certification and process requirements beyond AURA's current bearing/rotor scope. Those authorities remain with the responsible client organisation and qualified specialists.