Abstract
The article presents the possibilities of using fiber-optic acceleration (FOC) sensors on products of rocket-space and aviation technology as part of information-measuring systems. A special measuring device has been developed for experimental confirmation of the main characteristics of the technical characteristics of the developed, two-coordinate fiber-optic acceleration sensors. The developed measuring setup for the experimental research of a two-coordinate fiber-optic acceleration sensor with two, cylindrical lenses fixed on two H-shaped elastic elements deflected under the influence of acceleration in two mutually perpendicular directions X and Y, intended for operation in harsh conditions of rocket and space technology. The experimental equipment consists of the developed setup for setting micromovements and an information conversion unit, including modules for signal conversion, transmission, power supply, signal amplification, and indication. Experimental dependences of the output voltage from the information conversion unit’s output on the micro-displacement in the range corresponding to the micro-displacements of the inertial mass with a cylindrical lens under acceleration in the range of ±100 m/s2 were obtained on the micro-displacement setting unit. The maximum value of the linearity error of the prototype acceleration sensor together with the information conversion unit was 0.07%. The conversion sensitivity of a two-coordinate fiber-optic acceleration sensor per the experimental dependences obtained on the Data Physics LE-612 MST/DSA 10–40 k vibration stand when exposed to sinusoidal vibration with an acceleration amplitude from 2 to 10 g in the frequency range from 5 to 2560 Hz was, on average, 3 mV/m/s2. The conducted experimental research confirms the performance of experimental samples of fiber-optic acceleration sensors together with an information conversion unit, as well as the achievement of high metrological characteristics.
Highlights
Introduction distributed under the terms andSensors as a means of measuring physical quantities as part of information-measuring systems (IMS) for rocket-space and aviation technology (RS and AT) determine the quality of their functioning
The authors solved the problem of measuring accelerations onboard aircraft using two-coordinate fiber-optic acceleration sensors with improved technical characteristics
Original sensitive elements were used in the form of elastic elements with cylindrical lenses attached to them to simultaneously act as optically modulating and inertial elements, making it possible to significantly reduce the mass-dimensional characteristics of the sensor and simplify the installation of sensors at the measurement object
Summary
Sensors as a means of measuring physical quantities as part of information-measuring systems (IMS) for rocket-space and aviation technology (RS and AT) determine the quality of their functioning. They must be operable under the influence of external factors acting during the launch of spacecraft, with prolonged exposure parameters of outer space [1,2]. For fiber-optic IMS (FOIMS) with improved technical characteristics is a complex scientific task [5,6] The development of this science-intensive area has been identified as a priority for the development of the global aerospace industry. NASA, EKA, JAXA, and space agencies of the BRICS states have purposefully identified this direction in the national programs for the creation of advanced space systems and complexes for various purposes as promising [7,8]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
