Experimental studies of fiber-optic systems for measuring the velocity of liquid flows

Abstract

Background. High requirements for spark-explosion-fire safety, as well as the absence of harmful electromagnetic influences, ease of installation, measurement accuracy and preservation of operability in severe operating conditions are imposed on the means of measuring the fuel supply rate on board the aircraft. Fiber-optic measuring instruments have proven themselves well for use in such conditions. Despite the obvious advantages, fiber-optic sensors (FOS) in the domestic market are still inferior in demand for electrical measuring instruments, the reason for which was the lack of sufficient information about the technological features of their assembly, alignment and adjustment. Now, it is necessary to conduct experimental studies confirming the operability of mock-up samples of fiberoptic systems for measuring the stability of liquid flows. Materials and methods. To conduct experimental studies of a fiber-optic system for measuring the fluid flow velocity, a methodology for conducting experimental studies of mock-up samples has been developed. Results. Based on the conducted experimental studies, data on the main technical characteristics of fiber-optic information and measurement systems (FOIMS), which includes a FOS of the fluid flow velocity, were obtained. Conclusions. According to the conducted studies, experimental confirmations of the operability of the FOIMS of the velocity of liquid flows in severe operating conditions and under conditions of temperature differences have been obtained.

Keywords

• experimental research
• fiber-optic system
• measurement
• velocity
• liquid flow
• fiber-optic sensor
• alignment
• fiber-optic cable
• metrological characteristics