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Aircraft Inerting Systems
- Aerospace Standard
- AIR1903
- Issued
Sector:
Issuing Committee:
Language:
English
Scope
An airplane fuel tank inerting system provides an inert atmosphere in a fuel tank to minimize explosive ignition of fuel vapor.
This AIR deals with the three methods of fuel tank inerting systems currently used in operational aircraft: (1) on-board inert gas generation systems (OBIGGS), (2) liquid/gaseous nitrogen systems and (3) Halon systems. The OBIGGS and nitrogen systems generally are designed to provide full-time fuel tank fire protection; the Halon systems generally are designed to provide only on-demand or combat-specific protection.
This AIR does not treat the subject of Explosion Suppression Foam (ESF) that has been used for fuel tank explosion protection on a number of military aircraft. ESF is a totally passive, full-time protection system with multiple and simultaneous hit capability up to 23 mm. The primary disadvantages of foam are weight, reduction of usable fuel, and the added maintenance complexity when the foam must be removed for tank maintenance or inspection. AIR4170A is an excellent reference for the use of ESF for fuel tank explosion protection [1].
Rationale
Aerospace Information Report (AIR) 1903 provides technical information and references for developing an airplane fuel tank inerting system.
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Topic
Data Sets - Support Documents
No Datasets Available
Issuing Committee
AE-5D Fuel Tank Flammability Reduction Systems Committee
This subcommittee is charged with the responsibility of implementing the scope and objectives of the AE-5 and AC-9 committees that relate to flammability reduction systems in aircraft fuel tanks.
Reference
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