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Kayıt Tarihi: 22-Haziran-2025
Gönderilenler: 117
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| Gönderen: 09-Temmuz-2025 Saat 16:35 | Kayıtlı IP
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Aero-engine inlet testing has strict requirements for
"high temperature resistance, vibration resistance, and
high precision" of probes, requiring four strict
verification steps for selection.
tml">Sensor Calibrationwelcome to click on the
website to learn more!
Full Selection Process:
1. Scenario Parameter Sorting:
- Environment: 300-600℃, vibration frequency 500-
2000Hz, airflow velocity 150-300m/s (subsonic);
- Measurement requirements: total pressure, static
pressure, airflow deflection angle (±20°), accuracy
requirement ≤1%FS.
2. Material and Structure Screening:
- Excluding plastic/ordinary stainless steel, Inconel
718 superalloy was selected (resistant to 600℃ +
vibration);
- 5-hole probe structure was chosen (sufficient for
2D flow fields, more vibration-resistant than 7-hole
probes), with reinforced head treatment (wall thickness
increased to 1.5mm).
3. Parameter Matching Verification:
- Response time: <5ms (meeting dynamic airflow
measurement);
- Calibration cycle: ≤500 hours (for high-frequency
use scenarios);
- Compatibility with DAQ system: supports 4-20mA
signal (to avoid electromagnetic interference).
4. Actual Test Verification:
In a certain engine model test, initial use of a 7-
hole probe caused data drift due to vibration. After
replacing with a 5-hole vibration-resistant model, the
error remained stable within 0.8% during 8-hour
continuous testing.
Attached Core Parameter Table:
|Parameter|Selected Value|Verification Standard|
|Material|Inconel 718|Strength ≥800MPa at 600℃|
|Number of holes|5 holes|Deflection angle measurement
error ≤±1°|
|Response time|3ms|Dynamic airflow tracking accuracy
≥98%|
|Vibration resistance grade|2000Hz/10g
acceleration|Zero drift after vibration ≤0.1%FS|
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