NR-3VMA

NR-3VMA System Overview

The NR-3VMA is an aircraft fuel pump-regulator designed for fuel supply and automatic control of the TV3-117VMA turboshaft engine. The unit functions as part of the engine fuel and control system architecture, ensuring stable engine operation.

NR-3VMA Control Function

The unit performs fuel metering, regulation, and distribution functions during all operating phases, including start-up, acceleration, steady-state operation, and shutdown, maintaining required engine operating modes based on system inputs.

NR-3VMA Aircraft Application

The pump-regulator is used on aircraft and helicopters equipped with TV3-117VMA engines, operating with standard aviation fuels and supporting reliable engine performance under normal operational conditions.

NR-3VMA System Integration

The unit interacts with engine control systems, providing fuel flow adjustment based on rotor speed parameters, synchronization of air pressures during dual-engine operation, distribution of fuel across injector circuits, and control of compressor guide vanes. The product is also known under alternative designations NR-3VMA, NR-3VM, and NR-VMA family variants.

Product Type: Aircraft fuel pump-regulator
Function: Fuel supply, metering, regulation, and distribution for engine operation
Application / Where Used: Aircraft and helicopter engine fuel systems
System / Installation Area: Engine fuel system and automatic engine control system
Engine Compatibility: TV3-117VMA
Fuel Types: T-1, TS-1, RT, T5-1, VT
Operating Modes Supported: Start-up; acceleration; steady operation; shutdown
Control Capabilities: Regulation by gas generator rotor speed and free turbine speed
Fuel Distribution: Distribution across injector circuits
Pressure Synchronization: Air pressure synchronization downstream of compressors during dual-engine operation
Fuel Flow Control: Adjustment based on electronic regulator signals
Additional Functions: Engine shutdown; compressor guide vane control
Design Type: Mechanical fuel pump-regulator with automatic control functions
Operating Envelope: Standard operating conditions for TV3-117VMA engine
Modifications Family: NR-3VM; NR-3VM-T; NR-3VMA; NR-VMA-T
Condition: As applicable
Technical Documentation: Manufacturer passport and technical documentation available upon request

All shipments are carried out from our international warehouse in Dubai (UAE), as well as from our partners’ remote warehouses.

In Stock — items available in stock at the Dubai warehouse are dispatched within 5–10 business days after receiving 100% prepayment.

Remote Stock — items available at our partners’ remote warehouses are supplied within an average of 30–45 business days after receiving 100% prepayment.

Pre-Order — made-to-order products are manufactured and delivered within an average of 45–60 business days. Payment terms: 50% advance payment to start production, with the remaining 50% paid before dispatch from the Dubai warehouse after full readiness for shipment.

Returns & Changes (Restocking Fee)
For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.

Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.