Variable stator vanes, driven to every vane
— vanes in three variable rows, two actuators and one torque shaft. Every part is a solid you can measure, section and download. Move engine speed and the whole front block follows its schedule.
Cutaway: half casing shown. Rotors are drawn whole (360°); blades past the cut sit inside the casing half that is not drawn.
- Torque shaft
- —
- IGV vanes
- —
- VSV 1 vanes
- —
- VSV 2 vanes
- —
- Actuators
- —
Stage 1, up close
The —-vane first stage on its own: scrub the slider to swing every vane through its travel.
Drag the slider to drive the row by hand. Drag the scene to orbit, scroll to zoom.
What's real
Each feature is built the way the public record says production hardware is built.
| Feature | This model | Real hardware |
|---|---|---|
| Loading… | ||
Built to be made
- Loading…
Rigging scatter at the vane
| Row | Row mean | Target | Vane to vane | Target | Fitted key + self-centring pads |
|---|
Fits, measured on the solids
| Pair | ISO 286 class | Class limits, mm | Measured, mm |
|---|
Every part, by how it is made
| Part | Material | Route | DFM |
|---|
Stage 1, as shipped
Every lever pin in its eye
One measured fit per station, off the two solids.
Take the files
Every part as STEP
Sources
- NASA CR-165558 — E³ high-pressure compressor detail design
- NASA CR-168017 — E³ controls and accessories
- NASA CR-180850 — E³ HPC test hardware
- NASA TM-2009-215585 — 76-B vane schedule
- NACA RM L51J16 — compressor blade sections
- US 2005/0232757 — VSV spindle stack · US 5549448 — torque-shaft actuation · US RE42523 — segmented unison ring · EP 3085967 — ring guide pads
- FAA AD 2017-14-08 — VSV bore corrosion · FAA AD 2026-19094 — VSV bushing wear
- Omniseal — polyimide VSV bushings · Young & Franklin 8604 — VSV actuator
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