Sealing of Integral Fuel Tanks
- Aerospace Standard
- AIR4069B
- Revised
Scope
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a
How well the basic design lends itself to good sealing (key design factors to consider include accessibility and minimal movement, among others).
-
b
The choice of sealant; where it is applied; how it is applied.
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c
How well the substrate surface is prepared.
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d
Whether sealant fillet dimensions are optimum for aircraft configuration and flight dynamics.
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e
The degree of resistance of the sealant to the fluid and thermal environment.
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f
The degree of engineering insurance — i.e., application of adhesion promoters to sealant bond surfaces, application of organic topcoats over sealants, proper drainage of the fuel tank, etc. — employed for technical risk reduction.
Rationale
Recommended Content
Aerospace Standard | Fuel System Components: General Specification For |
Technical Paper | Reduction of Cycle Times for Aircraft Sealing Processes - Laboratory Testing and Concept Validation |
Aerospace Standard | Detailed Specification for Aircraft Pressure Refueling Nozzle |
Topic
Data Sets - Support Documents
Title | Description | Download |
---|---|---|
TABLE 1 | POLYSULFIDE TYPE FUEL TANK SEALANTS | |
TABLE 2 | POLYTHIOETHER TYPE FUEL TANK SEALANTS | |
TABLE 3 | POLYSULFIDE AND POLYTHIOETHER BASE COMPOUND VISCOSITIES | |
TABLE 4 | SEALANT TYPE AND CLASS VERSUS USE | |
TABLE 5 | CHANNEL TYPE SEALANT | |
Unnamed Dataset 6 | ||
Unnamed Dataset 7 | ||
Unnamed Dataset 8 | ||
Unnamed Dataset 9 |
Issuing Committee
AMS G9 Aerospace Sealing Committee
AMS Committee G9, Aerospace Sealing, is primarily responsible for the preparation, revision, and review of documents related to the sealing of aerospace vehicles for fluid containment and environmental protection by the use of sealants which are applied and cured to solid materials or are permanently mastic. Common sealant application examples include the sealing of integral fuel tanks, fuel bladder cavities, crew and passenger areas, access doors, fasteners, avionics compartments, windshields, and firewalls. The committee shall discuss sealing material and process developments, material property requirements, test methods, the effect of the environment on cured and uncured sealant materials and their containers, and emerging sealant industry challenges. The committee has dedicated subcommittees to address elastomeric aircraft fuel bladders, new sealant specification requirements, surface preparation for sealing, and sealant application and removal technologies.