Air bearing, porous surface feed — fixed reference geometry

Reference-geometry calculator (Ø40mm outer diameter, 5µm film, β=0.6 — fixed) for an aerostatic thrust bearing fed through a porous surface (permeability-coefficient restriction).

✓ gevalideerd tegen origineelorigineel: /calculators/c12_4d.htm

Enkele labels op deze pagina zijn nog niet vertaald — de Engelse tekst wordt daar getoond.

Draagvermogen, F185 N
Stijfheid, S42.5 N/µm
Massastroom, ṁ3.29 mg/s
Volumestroom, Q0.166 l/min
Squeeze/permeability number, σ3.176
Verstoorde kamerdruk, pᵣ0.34034 MPa

The legacy "please login" demo lock froze D0/H0/B1. The film thickness is additionally hardcoded (5e-6) directly inside the mass-flow formula, so this is kept as a fixed-geometry reference calculator. Only the inputs that were already free under the lock are exposed.

Methode & referenties

  • Aerostatic thrust bearing fed through a porous surface (permeability-based restriction).
  • FIXED GEOMETRY: outer diameter 40 mm, film 5 µm, β=0.6 — the film thickness is also hardcoded directly in the mass-flow formula, not only via the demo lock.
  • Generalizing the outer radius/film is a real model change and is not done here — see docs/locked-calculators-review.md.

De berekening is een letterlijke overzetting van de originele client-side JavaScript van /calculators/c12_4d.htm. Resultaten zijn geverifieerd gelijk aan het origineel via een geautomatiseerde golden-master-test. Geen enkele formule is opnieuw afgeleid of “verbeterd”.

Air bearing, porous surface feed — fixed reference geometry — Engineering ABC