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| Low Temperature Test Method For Aviation Engine Fuel System Accessories |
| Received:January 18, 2021 Revised:February 26, 2021 |
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| DOI：10.7643/issn.1672-9242.2021.06.014 |
| KeyWord:aeroengine fuel system accessories standard low temperature test |
| Author | Institution |
| SU Zhi-shan |
School of Power and Energy, Northwestern Polytechnical University, Xi¢an , China;AECC Xi¢an Engine Control Technology Co., Ltd, Xi¢an , China |
| LI Hua-cong |
School of Power and Energy, Northwestern Polytechnical University, Xi¢an , China |
| XU Gang-gang |
AECC Xi¢an Engine Control Technology Co., Ltd, Xi¢an , China |
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| Abstract: |
| In order to explore a low temperature test method for aircraft engine fuel system accessories, this paper summarized and compared the differences between domestic and foreign low temperature test methods for aircraft engine fuel system accessories. The source of the differences of test temperature in domestic and foreign standards was analyzed. The actual low temperature characteristics of No.3 jet fuel were tested. The inapplicability of the test temperature of ‒51 ℃ to No.3 jet fuel was verified. This paper analyzed the characteristics of heating up when the aero-engine system accessories work at low temperature and put forward a low temperature test method to simulate the starting process as much as possible. Under the ambient temperature of ‒55 ℃ and fuel temperature of ‒40 ℃, a 135-hour low temperature test was carried out with the proposed test method. An additional 1000 times of simulation of the low temperature starting process of the engine was carried out separately. During the test, the regulator of a certain type of main fuel pump worked normally, and passed the high cold flight test of a certain aircraft with an aeroengine in a certain airport in north China. The fuel temperature specified in GJB 241A is ‒51 ℃ or the temperature (‒56 ℃) corresponding to a viscosity of 12 mm2/s is not applicable to No. 3 jet fuel. The ambient temperature is ‒55 ℃, the fuel temperature is ‒40 ℃, and the low temperature test method which simulates the low temperature starting process of the engine as far as possible can effectively verify the low temperature working ability of the aviation engine fuel system accessories. |
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