MV-26B-V

Function of MV-26B-V in engine monitoring

The main function of MV-26B-V is measurement of vibration acceleration on engine structures. The sensor detects mechanical oscillations from rotor supports, bearing assemblies, compressor and turbine areas, then generates an electrical output signal for the aircraft vibration monitoring system. This signal allows onboard equipment to assess vibration levels and detect abnormal engine behavior. Timely vibration monitoring helps identify rotor imbalance, bearing defects or uneven aerodynamic loading before they develop into more serious engine faults.

Piezoelectric operating principle

MV-26B-V is described as a piezoelectric vibration transducer. Its sensitive element uses the direct piezoelectric effect: under vibration loads, the piezoelectric plate package generates an electrical charge proportional to mechanical acceleration. This charge signal is then processed by the vibration monitoring equipment. Piezoelectric construction is commonly used for engine-mounted vibration sensors because it allows measurement of dynamic vibration over the frequency range typical for rotating machinery.

Installation on D-30KP engines

According to the supplied context, MV-26B-V is installed on D-30KP turbojet engines and their modifications, which are used on Il-76 heavy transport aircraft. The sensor is rigidly mounted directly on engine rotor support housings, typically in compressor or turbine areas. A rigid bolted connection is necessary to transfer mechanical vibration accurately from the engine structure to the sensitive element of the sensor. Installation location and orientation should be confirmed by the applicable engine and aircraft maintenance documentation.

Construction and environmental resistance

The MV-26B-V sensor has a sealed cylindrical steel housing with a triangular flange base for bolted attachment. This construction provides mechanical rigidity and protects the internal piezoelectric element from environmental exposure. The sensor is intended for operation under high temperature variation, humidity, pressure changes and exposure to aviation oils or fuel vapors according to the supplied context. The sealed housing and flange mounting are important for stable signal output in engine-compartment conditions.

Identification and ordering of MV-26B-V

Before ordering MV-26B-V, the buyer should confirm the aircraft type, engine type, vibration monitoring system, required quantity, condition and documentation set. It is also important to confirm whether the request is for MV-26B-V specifically or for a related MV-series vibration sensor such as MV-25B-V. The sensor may be required for engine vibration monitoring repair, replacement of a defective transducer, maintenance stock or support of Il-76 / D-30KP engine operation. Product passport, part number, decimal number, test records and inspection documents should be checked before shipment.