Integrated Aircraft Fuel Tank Fire and Explosion Protection Systems - Phase 1 and 2

Importance of properly designing dust explosion protection systems: Case study – 2014 plywood manufacturing facility fire and explosion

Process Safety Progress ◽

10.1002/prs.12036 ◽

2019 ◽

Vol 38 (4) ◽

Author(s):

Scott G. Davis ◽

John L. Pagliaro

Keyword(s):

Dust Explosion ◽

Manufacturing Facility ◽

Protection Systems ◽

Explosion Protection ◽

Fire And Explosion

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Analytical Algorithm for Oxygen Concentration of Aircraft Fuel Tank in Various Inerting Stages

Applied Sciences ◽

10.3390/app11167698 ◽

2021 ◽

Vol 11 (16) ◽

pp. 7698

Author(s):

Yuhao Wei ◽

Yang Pei ◽

Yuxue Ge

Keyword(s):

Differential Equations ◽

Oxygen Concentration ◽

Fuel Tank ◽

Conventional Model ◽

Aircraft Fuel ◽

Proposed Model ◽

Fuel Tanks ◽

Analytical Algorithm ◽

Fire And Explosion ◽

Derivatives Of

Ullage washing is an efficient inerting method to keep the ullage oxygen concentration under the safe value, thus reducing the hazard and loss of fire and explosion of aircraft fuel tanks. In the conventional model of ullage washing, the initial derivatives of oxygen concentration that are used to solve the differential equations are selected subjectively by researchers and the empirical select influences the accuracy of the result. Therefore, this paper proposes an analytical algorithm that can calculate the ullage oxygen concentration without selecting any initial derivative value. The algorithm is based on a fuel tank ullage washing model regarding various inerting stages. It has been experimentally validated with an average relative error of 5.781%. Moreover, sensitive analyses carried out on the proposed model show that ground-based inerting can effectively reduce the ullage oxygen, concentration in the climb phase. Increasing 5 min of pre-takeoff inerting duration can shorten the time of decreasing the ullage oxygen concentration to 9% after takeoff by 2.1 min.

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Cleaner Fuel Through Nitrogen Inserting

ASME 1971 International Gas Turbine Conference and Products Show ◽

10.1115/71-gt-45 ◽

1971 ◽

Author(s):

W. Q. Brookley

Keyword(s):

Fuel Tank ◽

System Component ◽

Fuel System ◽

Fuel Additives ◽

Fuels Reduction ◽

Aircraft Fuel ◽

Aircraft Performance ◽

Fire And Explosion

Development of an aircraft fuel tank nitrogen system to suppress fire and explosion has been underway for several years. As work progressed it was learned that such a system could also reduce contamination in the fuels. Reduction of contamination will reduce fuel system component malfunctioning, improve aircraft performance, and possibly eliminate the need for fuel additives and exotic fuels.

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