Test Rig for Running-In and Calibration of Reheat and Nozzle Control Units, geared to 30,000 RPM.

Introduction

The Neometrix Test Rig for Running-In and Calibration of Reheat and Nozzle Control Units is a turnkey, floor-mounted facility engineered to perform the full suite of functional, leakage, sensitivity and hysteresis tests on turbine fuel control units under realistic, simulated service conditions. Designed for aerospace applications, it integrates fuel, lubrication, pneumatic, vacuum, thermal control, drive and data-acquisition subsystems into a compact, ergonomic layout with centralised controls and robust safety and interlock features.

Applications

• Reheat & nozzle control unit calibration: static and dynamic adjustment of PRC settings, pilot-valve sensitivity, vortex-diode response and nozzle turndown.
• Leakage & hysteresis testing: comprehensive air and fuel leakage checks and full hysteresis loops across operating envelopes up to 30,000 RPM.
• Service-simulation trials: altitude simulation, shut-down sequences and thermal cycling to verify performance under low and high pressure and temperature extremes.
• Durability & endurance testing: extended run-in cycles to assess component fatigue and long-term performance.
• Functional validation: confirmation of sensor and actuator compatibility within integrated engine control systems.
• Performance benchmarking: comparative analysis of new versus refurbished control units under identical test protocols.
• Troubleshooting & diagnostics: rapid fault isolation using integrated data analytics and test-report generation.

Key features

• Over 30 test procedures covering pump bearing checks, LP/HP leakage, response times, flow-control sensitivity and full hysteresis characterisation.
• Automated test sequencing: pre-programmed test profiles for consistent, repeatable procedures with minimal operator intervention.
• Environmental simulation: chilled-water heat exchangers, dry-air supply, vacuum headers and programmable altitude simulation.
• Precision drive system: 150 HP TEFC AC motor with encoder feedback (0–6000 RPM, ±1 RPM) coupled via gearbox to reach 30,000 RPM.
• Integrated safety hierarchy: multi-level interlocks, emergency shutdown and explosion-proof enclosure per NEMA 7 / IS 60079.
• Modular skid design: quick-swap quill interface and manifold trays allow rapid configuration changes between different units under test.
• Advanced diagnostics: real-time data visualisation, automated fault detection and customisable alert thresholds.
• Remote connectivity: secure Ethernet interface for remote control, monitoring and data export.
• Energy-efficient operation: variable-frequency drive and optimised thermal management reduce power consumption.

Technical specifications

Design & engineering philosophy

At its core, the Neometrix rig philosophy emphasises modularity for rapid reconfiguration, precision for consistent test results, safety for regulatory compliance, and operator-centric design for intuitive use. Every assembly is designed as a plug-and-play module, from skid-mounted filtration units to quick-connect manifolds, reducing changeover times and maintenance complexity.

Quality assurance & calibration procedures

All sensors and actuators undergo a stringent factory calibration process traceable to national metrology institutes. The commissioning phase includes on-site cross-verification with portable standards, followed by detailed calibration certificates. A built-in calibration alert system flags approaching due dates and logs historical calibration data for audit readiness.

Software & data management

The optional PC-based DAQ software provides customisable dashboards, automated report templates and deep analytics tools, including FFT for vibration data and statistical trend analysis. A secure REST API allows integration with enterprise asset-management systems and digital-twin platforms.

Customisation & upgrade path

Neometrix offers plug-in modules for advanced capabilities, including high-altitude simulation packs, vibration and acoustic monitoring, and high-speed video capture. Future firmware upgrades can enable predictive maintenance algorithms and AI-driven anomaly detection.

Industry use cases: major engine OEMs have deployed this test rig to certify next-generation fuel-control modules, reducing calibration cycles by 30 %. Military MRO depots leverage its durability tests to extend component service life by 20 %. Research labs use its hysteresis mapping to develop adaptive control strategies in unmanned aerial vehicles.

Installation & commissioning

Site requirements include a 3 m × 2 m footprint with 2,500 kg floor loading capacity, plus utility hookups: 415 VAC 3-phase power, chilled water at 10 °C, and 150 SCFM dry air. Commissioning covers mechanical alignment, electrical hook-up, fluid leak checks, performance validation, and a comprehensive training workshop for operators and maintenance staff.

Environmental & facility requirements

Designed for ambient ranges of 10–40 °C and relative humidity below 85 %. Requires a ventilated room with exhaust for fuel vapours and an air-purged electrical enclosure. Acoustic dampening features ensure workplace noise remains below 75 dBA.

Physical dimensions & weight

Overall dimensions: 3 m (L) × 2 m (W) × 2 m (H). Process tank: 1 m × 1 m × 1.5 m, mounted at 0.5 m elevation. System weight approximately 2,000 kg, excluding optional chiller and air skid.

Electrical requirements

Primary drive: 150 HP TEFC motor with encoder, powered through an IP20 VFD capable of 0–200 Hz control and 150 % overload. Control panel: 230 VAC for instrumentation, including digital stepper potentiometers, meters and air-purge system.

Maintenance & calibration

Routine checks include weekly visual inspections and filter replacements every 500 operating hours. Calibration cycles: pressure and flow sensors annually; thermocouples every six months. A two-year spare parts kit includes critical consumables and seals.

Benefits & advantages

Achieves high throughput with minimal setup times, delivers traceable accuracy for critical aerospace components, and supports future upgrades through its modular architecture. Energy-efficient design lowers operating costs while ensuring regulatory compliance and data integrity.

Conclusion

By blending advanced simulation capabilities, modular engineering and comprehensive data-integrity features, the Neometrix Test Rig stands as a definitive platform for turbine fuel-control verification. Its adaptability, precision and lifecycle support make it an indispensable asset for OEMs, MRO providers and R&D facilities worldwide.