NGV.
turning fire into speed
The nozzle guide vanes sit right behind the combustor and see the hottest gas in the engine. They accelerate the flow to the speed of sound and turn it so it hits the turbine blades at the right angle. Because the NGV throat is choked, its area decides how much air the whole engine can pass, so it is the most carefully controlled dimension in the hot section.
A choked throat means one number, the throat area, fixes the engine's operating line. We gauge every single passage.
Key numbers
- Throat condition
- Choked (Mach 1)
- Throat area tolerance
- ± 1 %
- Build
- One-piece ring
- Material
- Inconel 718, printed
Materials
Inconel 718 (LPBF)
Printable, weldable and strong up to the NGV metal temperature.
Inconel 713C (cast)
Investment-cast alternative for higher temperature margin.
How it is produced
Designed by Vector Dynamics, produced by qualified manufacturing partners to our drawings.
- 01
Laser powder bed fusion
Whole vane ring printed in one piece, vanes and shrouds together.
- 02
Stress relief & HIP
Hot isostatic pressing closes internal porosity from printing.
- 03
Solution & age
Precipitation hardening to AMS 5664 / 5663-style condition.
- 04
Wire EDM & machining
Removed from the build plate, locating faces machined to datum.
- 05
Throat gauging
Every throat measured; total flow capacity checked against the design.
and then we check it
- CT scan for porosity
- Throat area gauging
- FPI on vane leading and trailing edges
supply enquiries welcome.
Want the VD-100?
UAV and target-drone makers, manufacturing partners and investors: talk to us about the VD-100.