Research output: Contribution to journal › Article › peer-review
Optical Diagnosis of the Geometry of an Axisymmetric Controlled Nozzle of a Gas-Turbine Engine. / Tokarev, M. P.; Seredkin, A. V.; Khrebtov, M. Yu et al.
In: Optoelectronics, Instrumentation and Data Processing, Vol. 55, No. 6, 01.11.2019, p. 612-617.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Optical Diagnosis of the Geometry of an Axisymmetric Controlled Nozzle of a Gas-Turbine Engine
AU - Tokarev, M. P.
AU - Seredkin, A. V.
AU - Khrebtov, M. Yu
AU - Petkoglo, N. P.
AU - Vovk, M. Yu
AU - Chikishev, L. M.
AU - Dulin, V. M.
AU - Markovich, D. M.
AU - Marchukov, E. Yu
PY - 2019/11/1
Y1 - 2019/11/1
N2 - Modern aviation industry solves the problem of developing multifunction engines capable of flying both at subsonic and supersonic speeds. An important part in such engines is a variable area nozzle, which allows varying the geometry of the engine exhaust unit and, accordingly, its technical characteristics. This study touches upon an computer vision based optical noncontact method for reconstructing a nozzle shape. The reconstruction requires data recorded by two optical three-dimensional recorders directed toward the inner part of the nozzle when the engine is subjected to ground tests. The diagnosis is complicated by the presence of a hot jet being in the way of the sensor vision, the regime-dependent variation of the nozzle glow brightness, and intense mechanical vibrations. The performed bench tests confirm the efficiency of the proposed method. According to their results, in a low-gas regime, the standard deviation of the diagnosed diameters of the exhaust unit and critical sections for each frame does not exceed 0.3% of the corresponding sizes. The data obtained as a result of this diagnosis can be taken into account when upgrading the exhaust unit of the engine and the thrust control system of a gas turbine engine.
AB - Modern aviation industry solves the problem of developing multifunction engines capable of flying both at subsonic and supersonic speeds. An important part in such engines is a variable area nozzle, which allows varying the geometry of the engine exhaust unit and, accordingly, its technical characteristics. This study touches upon an computer vision based optical noncontact method for reconstructing a nozzle shape. The reconstruction requires data recorded by two optical three-dimensional recorders directed toward the inner part of the nozzle when the engine is subjected to ground tests. The diagnosis is complicated by the presence of a hot jet being in the way of the sensor vision, the regime-dependent variation of the nozzle glow brightness, and intense mechanical vibrations. The performed bench tests confirm the efficiency of the proposed method. According to their results, in a low-gas regime, the standard deviation of the diagnosed diameters of the exhaust unit and critical sections for each frame does not exceed 0.3% of the corresponding sizes. The data obtained as a result of this diagnosis can be taken into account when upgrading the exhaust unit of the engine and the thrust control system of a gas turbine engine.
KW - 3D scan
KW - ground tests
KW - GTE exhaust unit geometry
KW - optical diagnosis
KW - stereo reconstruction
KW - stereo vision
UR - http://www.scopus.com/inward/record.url?scp=85079093837&partnerID=8YFLogxK
U2 - 10.3103/S8756699019060128
DO - 10.3103/S8756699019060128
M3 - Article
AN - SCOPUS:85079093837
VL - 55
SP - 612
EP - 617
JO - Optoelectronics, Instrumentation and Data Processing
JF - Optoelectronics, Instrumentation and Data Processing
SN - 8756-6990
IS - 6
ER -
ID: 23428758