Performance of an oxygen-consuming inerting system for an aircraft fuel tank with RP-3 aviation fuel in flight

IF 5.8 1区工程技术 Q1 ENGINEERING, AEROSPACE Aerospace Science and Technology Pub Date : 2022-04-01 DOI:10.1016/j.ast.2022.107446

Xiaotian Peng , Hongming Wang , Long Huang , Guotian Liu , Chenchen Wang , Shiyu Feng

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引用次数: 2

Abstract

Aircraft fuel tank inerting system is an important guarantee for flight safety. A novel oxygen-consuming inerting system-3CIS (low-temperature controllable oxygen-consuming catalytic inerting system) was proposed and studied with RP-3 aviation fuel. Based on the designed inerting system, the mathematical model of the system in flight was established based on the conservation law of mass and energy. The system performance under different flight conditions was firstly analyzed, and the effects of the initial fuel loading, fan flow rate and preheating temperature on the system performance were studied. Meanwhile, a test bench was built to verify the correctness of the established model. The following conclusions can be drawn from the results: The 3CIS can reduce the oxygen concentration in the fuel tank quickly to prevent fires and suppress explosions. What's more, the inerting time is the longest when the fuel tank is initially empty if all other system conditions are the same. Therefore, it is suggested the no-load state should be used for the system parameters design for the purpose of maximum safety. As for the influence of key parameters on system performance, the inerting rate increases with the increase of fan suction flow and preheating temperature, and low fan flow rate during the climb and cruise stages and high fan flow rate during descent are suggested for the control system designing. Finally, a regenerator is recommended when designing the system since it can effectively reduce the preheating power and cooling power of the system.

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RP-3航空燃料飞机油箱耗氧惰化系统的飞行性能

飞机油箱惯性系统是飞行安全的重要保障。以RP-3航空燃料为原料，提出并研究了一种新型的低温可控耗氧催化惰化系统(3cis)。在设计的惯性系统的基础上，根据质能守恒定律建立了系统在飞行中的数学模型。首先对不同飞行工况下的系统性能进行了分析，研究了初始载油量、风机流量和预热温度对系统性能的影响。同时，搭建了试验台，验证了所建模型的正确性。结果表明:3CIS能够快速降低燃料箱内的氧气浓度，达到防止火灾和抑制爆炸的目的。在其他系统条件相同的情况下，燃料箱初始为空时惰化时间最长。因此，建议采用空载状态进行系统参数设计，以达到最大的安全性。在关键参数对系统性能的影响方面，吸气率随风机吸入流量和预热温度的增加而增加，控制系统设计建议在爬升和巡航阶段降低风机流量，在下降阶段提高风机流量。最后，在设计系统时建议使用蓄热器，因为它可以有效地降低系统的预热功率和冷却功率。

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来源期刊

Aerospace Science and Technology 工程技术-工程：宇航

CiteScore

10.30

自引率

28.60%

发文量

654

审稿时长

54 days

期刊介绍： Aerospace Science and Technology publishes articles of outstanding scientific quality. Each article is reviewed by two referees. The journal welcomes papers from a wide range of countries. This journal publishes original papers, review articles and short communications related to all fields of aerospace research, fundamental and applied, potential applications of which are clearly related to: • The design and the manufacture of aircraft, helicopters, missiles, launchers and satellites • The control of their environment • The study of various systems they are involved in, as supports or as targets. Authors are invited to submit papers on new advances in the following topics to aerospace applications: • Fluid dynamics • Energetics and propulsion • Materials and structures • Flight mechanics • Navigation, guidance and control • Acoustics • Optics • Electromagnetism and radar • Signal and image processing • Information processing • Data fusion • Decision aid • Human behaviour • Robotics and intelligent systems • Complex system engineering. Etc.