Nozzle Pressure Ratio Control Test Rig / 2000 PSI ATF circuit · 0–500 igph / Reheat fuel control unit testing / India

NPRC · SEMI-AUTOMATIC TEST RIG

Nozzle Pressure Ratio Control Test Rig, with a 2000 PSI / 200 IGPH ATF circuit.

A semi-automatic test rig designed, developed and fabricated for testing Nozzle Pressure Ratio Control (NPRC) units — the Unit under Test (UUT) — which are part of the reheat fuel control unit system of the aircraft. ATF, air and vacuum circuits, precision regulation and explosion-proof electricals are built into one bench.

Request proposal Specifications

Nozzle pressure ratio control test rig - blue frame, stainless steel tank, motor-pump and white control cabinet by Neometrix

Fig · 01 NPRC test rig · frame, SS tank, motor-pump and control cabinet

Flow Meter Range

0–500igph

HP Pump Pressure

2000PSI

Pump Flow

200IGPH

Flow Accuracy

±1%

Filtration

25/15/5µm

Overview

Test the unit, not the fuel system.

Purpose-built bench for carrying out the testing of Nozzle Pressure Ratio Control units.

Close-up of stainless steel tank and instrumentation on the nozzle pressure ratio control test rig

Fig · 02 Stainless steel tank and instrumentation detail

The semi-automatic Test Rig is designed, developed and fabricated as per the specifications for carrying out the testing of the Nozzle Pressure Ratio Control (NPRC) units, hereinafter called Unit under Test (UUT), which are the part of the Reheat fuel control unit system of the aircraft.

The design document is in four parts — the UUT test bed, the control panel, the ATF / Air / Vacuum circuit, and the electronics / electrical system — described below.

Architecture

Four parts, one test bed.

The design document is divided into four parts covering mechanical, panel, fluid and electrical design.

Part · 01

UUT Test Bed

Frame prepared using C-sections and SS sheets with a Dip Tray for containing the UUT. Bed size 1750 × 450 × 1000 mm including the Dip Tray. Proposed colour “Siemens Grey”; any standard colour can be provided.

Part · 02

Control Panel

Made of 4 mm SS sheet and fitted with the Test Bed and the room wall. Carries all pressure gauges (ATF / Air / Vacuum), control valves, pressure regulators, electrical clogging indicators, temperature sensors and level indicators. Tubing to the main piping circuit runs behind the panel with appropriate fittings.

Part · 03

ATF / Air / Vacuum Circuit

Complete circuit of pipes, tubes and hoses of different sizes, joined with appropriate fittings. Circuit drawing is provided with proper colour coding as per the piping sizes.

Part · 04

Electronics / Electrical

Electrical circuit prepared considering the explosiveness of the working fuel, with proper insulation and explosion-proof accessories. Circuit drawing is provided for reference.

Image Gallery

The rig, as built.

Photographs of the built Nozzle Pressure Ratio Control Test Rig, including units lined up in the laboratory.

Nozzle pressure ratio control test rig - blue frame, stainless steel tank, motor-pump and control cabinet

NPRC test rig - alternate angle showing tank, pump and piping

Nozzle pressure ratio control test rig built unit in the Neometrix workshop

Row of Nozzle Pressure Ratio Control test rigs in the laboratory

Multiple identical NPRC test rigs installed in a lab bay

Close-up of stainless steel tank and instrumentation on the NPRC test rig

Line of delivered nozzle pressure ratio control test rigs

Fig · 03–09 Built NPRC test rigs · select an image to enlarge

Specifications

Full technical parameters.

Component ratings for the Neometrix Nozzle Pressure Ratio Control Test Rig as specified in the design document.

Test Bed Size	1750 × 450 × 1000 mm including Dip Tray; C-section frame with SS sheets
Control Panel	4 mm SS sheet; size 1750 × 4 × 1350 mm; fitted with the Test Bed and the room wall
Turbine Flow Meter with DRO	Range 0–500 igph; accuracy ±1%, calibrated on ATF
HP Fuel Pump Motor Assembly	Working pressure 2000 at flow of 200 IGPH (~15 LPM)
Relief Valve (HP)	Full flow, adjustable set pressure 1500–2200 PSI
HP Fuel Filter – 25 micron	With electrical clogging indication; 2000 PSI, 200 igph, SS bowl
HP Fuel Filter – 15 micron	With electrical clogging indication; 2000 PSI, 200 igph, SS bowl
HP Fuel Filter – 5 micron	With electrical clogging indication; 2000 PSI, 200 igph, SS bowl
Temperature Sensor with DRO	0–100°C; accuracy ±0.5%; resolution 0.1°C
Pressure Relief Valve (LP)	Full flow, adjustable set pressure 50–80 PSI
Air Operated Back Pressure Valve	Back pressure range 0–50 PSI
Air Pressure Regulator	Inlet 500 PSI; outlet 0–300 PSI; flow 160 scfm
Absolute Air Filter	With moisture separator; 3 micron
Pneumatic Precision Regulator (Air / Vacuum) – 1	Supply vacuum to 300 PSI; outlet 2″ of Hg absolute to 150 PSI
Pneumatic Precision Regulator (Air / Vacuum) – 2	Supply vacuum to 300 PSI; outlet 2″ of Hg absolute to 200 PSI
Needle Valve	1/2″ size, SS material
Vacuum Regulator	SS material
Pressure Gauge	Range 0–2000 PSI; dial 10 in. dia; accuracy ±0.25%
ABS Pressure Gauge	Range (−)30 – 0 – (+)270″ Hg; accuracy ±0.1%; dial 6 in. dia
Bed Colour	Proposed Siemens Grey; any standard colour can be provided

Key Features

Built around six systems.

The rig is organised into ATF, reservoir, scavenging, and air and vacuum systems with their controls and measurements.

F · 01Test Rig ATF Power Pack System

F · 02Test Rig ATF System Controls & Measurements

F · 03Reservoir

F · 04Scavenging System

F · 05Test Rig Air & Vacuum System

F · 06Test Rig Air & Vacuum System Controls & Measurements

Applications

Where it is used.

Testing of Nozzle Pressure Ratio Control (NPRC) units, the Unit under Test (UUT), which are part of the Reheat fuel control unit system of the aircraft.

Design & Downloads

Renders, catalog and design documents.

CAD renders of the rig and instrument panel, with the product catalog and engineering design documents as PDF.

CAD render of the NPRC test rig with instrument panel

CAD render of the complete Nozzle Pressure Ratio Control test rig

CAD render of the NPRC test rig instrument panel

CAD Design renders (not photographs) · whole rig and instrument panel

Catalog

Nozzle Pressure Ratio Control Test Rig — Catalog

PDF

Design · 01

Nozzle Pressure Ratio Control Test Rig Design-1

PDF

Design · 02

Nozzle Pressure Ratio Control Test Rig Design-2

PDF

Design · 03

Nozzle Pressure Ratio Control Test Rig Design-3

PDF

FAQ

Common questions.

Plain-language answers from the engineering team.

Q · 01 What is the Nozzle Pressure Ratio Control Test Rig?

It is a semi-automatic test rig designed, developed and fabricated by Neometrix to test Nozzle Pressure Ratio Control (NPRC) units, referred to as the Unit under Test (UUT), which are part of the reheat fuel control unit system of the aircraft.

Q · 02 Who manufactures the Nozzle Pressure Ratio Control Test Rig?

The Nozzle Pressure Ratio Control Test Rig is designed and manufactured by Neometrix Engineering Pvt Ltd, India.

Q · 03 What are the four parts of the NPRC test rig design?

The design document is in four parts: the UUT test bed, the control panel, the ATF / air / vacuum circuit, and the electronics / electrical system.

Q · 04 What is the size of the UUT test bed?

The test bed is a frame built from C-sections and SS sheets with a dip tray for containing the UUT, sized 1750 x 450 x 1000 mm including the dip tray. It is proposed in Siemens Grey, and any standard colour can be provided.

Q · 05 What is fitted on the control panel?

The 4 mm SS sheet control panel carries the pressure gauges (ATF / air / vacuum), control valves, pressure regulators, electrical clogging indicators, temperature sensors and level indicators, with tubing to the main piping circuit routed behind the panel.

Q · 06 What flow and pressure does the ATF circuit support?

The HP fuel pump motor assembly has a working pressure of 2000 PSI at a flow of 200 IGPH (about 15 LPM), and the turbine flow meter with digital read-out covers 0-500 igph with an accuracy of plus or minus 1%, calibrated on ATF.

Q · 07 What filtration is provided on the high-pressure fuel line?

The rig has HP fuel filters with electrical clogging indication at 25 micron, 15 micron and 5 micron filtration, each rated at 2000 PSI and 200 igph with an SS bowl, plus a 3 micron absolute air filter with moisture separator on the air side.

Q · 08 Is the electrical system suitable for fuel environments?

Yes. The electrical circuit is prepared considering the explosiveness of the working fuel, with proper insulation and explosion-proof accessories.

Q · 09 Is the test rig customizable?

Yes. Neometrix designs the Nozzle Pressure Ratio Control Test Rig to the customer's specification, and the bed colour can be supplied in any standard colour. Contact Neometrix to discuss your requirements.

Q · 10 How can I get a quotation?

You can request a quotation by contacting Neometrix Engineering Pvt Ltd through https://neometrixgroup.com/products/nozzle-pressure-ratio-control-test-rig or the contact page at https://neometrixgroup.com/contactus.

Get a proposal

Tell us your NPRC unit
and test requirements.

We configure the test bed, control panel, ATF / air / vacuum circuit and electricals to your specification and walk through the design documents with your team.

Request proposal

Nozzle Pressure Ratio Control Test Rig, with a 2000 PSI / 200 IGPH ATF circuit.

Test the unit, not the fuel system.