Expose missing architecture inputs before they become supplier assumptions.
Open Pre-RFQ checklist →Engineering resources
Reference material for bearing, rotor and release decisions.
Guides, technical notes, validation records and practical topic pages built around the questions engineers actually need to answer.
Three connected subjectsBearing physics, rotor-system consequence and evidence/release logic define the machine result together.
New to AURA?
Start with the 2-minute decision map.
Use the existing Pre-RFQ decision checklist to locate the current decision, the missing input and the proof that should come next.
Choose by current question
Start from the decision you are facing now.
Each route starts with one resource and points to one next commercial or engineering step.
Use explicit stop conditions before promoting a screening result into a release claim.
Open stop-boundary map →Name the operating state, unresolved question, acceptance quantity and closure rule first.
Open evidence-planning map →Start with the aerostatic design guide, then connect bearing physics to the precision-spindle decision.
Open aerostatic design guide →Engineering decision questions
Four questions a catalogue value cannot close on its own.
Use these when the data sheet looks complete but the machine decision still depends on coefficient definition, operating state or combined load path.
Which stiffness does the rotor model actually need?
Separate the printed coefficient from the local support behaviour required at the running state.
How much catalogue margin survives the envelope?
Check the governing operating corner instead of assuming nominal capacity is the remaining machine margin.
What does temperature do to the operating clearance?
Carry shaft, housing, material and cooling state into the support decision.
Are axial and moment margins actually independent?
Resolve the real load path and process overhang before reading separate catalogue values as separate budgets.
Decision assets
Use the checklist before the RFQ becomes an accidental architecture decision.
Short working assets are designed for a live project decision, not for general education.
Pre-RFQ · precision spindles
Custom gas-static spindle pre-RFQ decision checklist
Fifteen checks across the machine decision, operating envelope, shaft/support context, rotor consequence and evidence path. Use it before freezing CAD, briefing a supplier or commissioning detailed CAE.
01Name the decision
02Bound the operating envelope
03Keep architecture supplier-independent
04Name the next proof
Evidence boundary · architecture screening
Where an Architecture Screen must stop
Eight stop conditions, an evidence-authority ladder and six common claim-promotion errors. Use it when a screening result is about to be treated as higher-authority engineering evidence.
01Know when to stop
02Keep authority explicit
03Do not promote the claim
04Name the next proof
Acceptance evidence · operating state
From operating state to acceptance evidence
A connected proof-planning map for preserving candidate identity, naming the unresolved decision question, selecting targeted CFD / FE / test evidence and defining closure before interpretation.
01Preserve state identity
02Name the open question
03Choose the smallest proof
04Define closure first
Core guides
Start from the subject you need to understand.
Each guide links back to the same AURA workflow so bearing design, rotor consequence and release evidence do not become disconnected topics.
Aerostatic bearing design guide
Architecture, clearance, restrictors, load, stiffness, flow and verification.
Open guide →Gas-bearing rotor dynamics guide
Support coefficients, critical-speed families, response and state dependence.
Open guide →Rotor balancing and release guide
Balance result, acceptance evidence and what a plane-free claim actually requires.
Open guide →Engineering topics
Focused pages for practical design questions.
Shorter references isolate one parameter or decision while preserving the larger bearing–rotor context.