State-Of-The-Art Real-Time Jet Fuel Quality Measurement

2011 ◽  
pp. 117-128
Author(s):  
Jed B. Stevens ◽  
Greg Sprenger ◽  
Miles Austin
Keyword(s):  
Quality Measurement ◽  
Jet Fuel ◽  
Aviation Fuel ◽  
Fuel Quality ◽  
Measurement Systems ◽  
Sensing System ◽  
Advanced User ◽  
Electronic Measurement ◽  
New Type ◽  
Quality Specifications

This chapter discusses the historical approaches to monitoring aviation fuel quality, and the current industry movement towards continuous monitoring electronic measurement systems. The application of mature technology from other industries is reviewed and found to be inadequate. A new type of sensing system designed specifically for the needs of aviation fuel quality is introduced, showing advanced user features and proven to be far more accurate than any other method current available. This article also discusses a typical problem in real world applications where a combination of contaminant is encountered, and how only the new type of sensing system can properly measure the contamination to aviation fuel quality specifications.

Microwave resonance method for measuring microliter volumes of free moisture in aviation fuels

2020 ◽  
pp. 49-56
Author(s):  
Vitaly V. Volkov ◽  
Michael A. Suslin ◽  
Jamil U. Dumbolov
Keyword(s):  
Solid Surface ◽  
Free Water ◽  
Resonance Method ◽  
Cavity Resonator ◽  
Maximum Error ◽  
Aviation Fuel ◽  
Fuel Quality ◽  
Microwave Resonance ◽  
Free Moisture ◽  
Microwave Losses

One of the conditions for ensuring the safety of air transport operation is the quality of aviation fuel refueled in aircraft. Fuel quality control is a multi-parameter task that includes monitoring the free moisture content. Regulatory documents establish the content of free water no more than 0.0015% by weight. It is developed a direct electrometric microwave resonance method for controlling free moisture in aviation fuels, which consists in changing the shape of the water drops by pressing them on a solid surface inside a cylindrical cavity resonator. This can dramatically increase dielectric losses. Analytical and experimental analysis of the proposed method is carried out. The control range from 0,5 to 30 μl of absolute volume of moisture in aviation fuels with a maximum error of not morethan 25 % is justified. The sensitivity of the proposed method for monitoring microwave losses in free moisture drops transformed into a thin layer by pressing is an order of magnitude greater than the sensitivity of the method for monitoring microwave losses in moisture drops on a solid surface in a resonator. The proposed method can be used as a basis for the development of devices for monitoring the free moisture of aviation fuels in the conditions of the airfield and laboratory. The direction of development of the method is shown.

scholarly journals Experimental research of two stroke aircraft diesel engine

2019 ◽  
Vol 179 (4) ◽  
pp. 75-79
Author(s):  
Łukasz GRABOWSKI ◽  
Paweł KARPIŃSKI ◽  
Grzegorz BARAŃSKI
Keyword(s):  
Diesel Engine ◽  
Fuel Injection ◽  
Experimental Studies ◽  
Injection System ◽  
Temperature Control System ◽  
Maximum Pressure ◽  
System Control ◽  
Fuel Injection System ◽  
Measurement Systems ◽  
New Type

This paper presents the results of experimental studies of the opposed-piston diesel engine. This engine was designed during one of the stages of the research on a new-type drive unit for gyrocopter applications. In order to conduct research, a special test stand as well as control and measurement systems were developed. As part of the work on the engine, the fuel injection system, engine temperature control system and measurement systems were designed. In addition, a computer program has been developed for the fuel injection system control (injectors, valves fuel pressure regulators). The paper presents the results of the preliminary tests for a single value of engine speed (1500 rpm) and three values of load defined by torque. The measured value of the indicated pressure made it possible to calculate the maximum pressure. The results obtained from the bench tests were analyzed.

Design of Remote Test System for Fiber Bragg Grating Based on LabVIEW

2013 ◽  
Vol 694-697 ◽  
pp. 992-996
Author(s):  
Chun Tong Liu ◽  
Yang Zhang ◽  
Zhen Xin He ◽  
Hong Cai Li
Keyword(s):  
Fiber Bragg Grating ◽  
Data Storage ◽  
Test System ◽  
Fiber Optic Sensor ◽  
Bragg Grating ◽  
Testing System ◽  
Sensing System ◽  
Actual Use ◽  
New Type ◽  
Control Port

As a new type of wavelength modulated fiber optic sensor, Fiber Bragg Grating (FBG) has been widely used in many fields. The majority of FBG demodulation device just detect the absolute wavelength, however, the change of wavelength is often concerned in actual use. For the purpose of realizing the FBG sensing system automated test, using the remote control port of the Q8384 spectrometer and the LabVIEW language to develop the remote automation testing system, and with the friendly interface of FBG sensing test interface. Realized the real-time monitoring and data storage capabilities by the processing of the collecting data and the FBG sensing remote test system is more practical.

Composition-Explicit Distillation Curves of Aviation Fuel JP-8 and a Coal-Based Jet Fuel

2007 ◽  
Vol 21 (5) ◽  
pp. 2853-2862 ◽  
Author(s):  
Beverly L. Smith ◽  
Thomas J. Bruno
Keyword(s):  
Jet Fuel ◽  
Aviation Fuel

A TRIBOLOGICAL TEST RIG FOR FIBRES, CABLES, AND PLAITINGS

Tribologia ◽  
2018 ◽  
Vol 271 (1) ◽  
pp. 51-55
Author(s):  
Piotr KOWALEWSKI ◽  
Anna BROŃCZYK ◽  
Wojciech WIELEBA
Keyword(s):  
Control Systems ◽  
Friction And Wear ◽  
Machine Design ◽  
Testing Device ◽  
Test Rig ◽  
Tribological Test ◽  
Measurement Systems ◽  
Innovative System ◽  
New Type ◽  
And Control

The paper presents a description of the mechanical construction, measuring and control systems and the possibilities of a new type tribological testing device. The design was developed and built at the Department of Fundamentals of Machine Design and Tribology of Wroclaw University of Science and Technology. Described tester allows the investigate a friction and wear of components such as fibrous tapes, ropes, plaitings or fibers themselves in contact with solid materials. The paper describes in detail the construction of drive and the load pneumatic system. The innovative system of the device such measurement equipped with piezoelectric sensors and an experimental fixing unit of tested components also have been described. Work includes diagrams of used control and measurement systems and the central lubrication system. As a test the polyethylene cable in contact with brass rods has been examined. The results of this studies were been also presented in the paper.

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