Infrared and Laser Engineering, Volume. 51, Issue 10, 20220685(2022)
Design of a fiber-optic composite probe for engine intake total temperature and pressure (invited)
Figures & Tables(14)
Fig. 1. Schematic diagram of the internal structure of the total temperature and pressure probe
Fig. 2. (a) Stagnation cover velocity cloud; (b) Total pressure cloud; (c) Total temperature cloud
Fig. 3. (a) Velocity cloud diagram and distribution of FBG at the center of the outlet; (b) Velocity cloud map and distribution of FBG in front of the outlet 0.5 mm
Fig. 5. (a) Relationship between pressure range and diaphragm thickness; (b) Relationship between sensitivity and diaphragm thickness
Fig. 7. Temperature-pressure composite test platform. (a) Test system and principle; (b) Test site
Fig. 8. (a) Pressure stability test results; (b) Pressure linearity output results; (c) Pressure output results at different temperatures; (d) Pressure repeatability test results
Fig. 10. (a) Pressure sensitivity versus FBG center wavelength; (b) Pressure zero output versus FBG center wavelength
Fig. 11. Pressure measurement results after temperature decoupling
Table 1. Recovery coefficient of stagnation cover at different inlet and outlet area ratios
View tableView in ArticleTable 1. Recovery coefficient of stagnation cover at different inlet and outlet area ratios
Import/export area ratio Flow rate/Ma Ct Cp 4.5 0.55 0.85 0.91 4 0.49 0.91 0.93 3.5 0.53 0.84 0.88
Table 2. Structural parameters of the total pressure sensor
View tableView in ArticleTable 2. Structural parameters of the total pressure sensor
Performance Symbol Value Diaphragm radius/mm r 0.45 Diaphragm thickness/μm h 18 Sensor sensitivity/μm·MPa–1 Y 9.20
Table 3. Femtosecond laser processing parameters
View tableView in ArticleTable 3. Femtosecond laser processing parameters
Performance Symbol Value Wavelength/nm λ 1030 Frequency/kHz F 200 Pulse-width/fs S 250 Frequency multiplier - 2
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Yangyang Liu, Pinggang Jia, Shihui Yuan, Jun Wang, Shun Wan, Jichun Zhao, Dundun Liu, Yuan Xue, Jijun Xiong. Design of a fiber-optic composite probe for engine intake total temperature and pressure (invited)[J]. Infrared and Laser Engineering, 2022, 51(10): 20220685
Paper Information
Category: Special issue-High-temperature sensing technology based on micro/nano optical structure
Received: Sep. 22, 2022
Accepted: --
Published Online: Jan. 6, 2023
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