Mass Loading Effects on Fuel Vapor Concentrations in an Aircraft Fuel Tank Ullage

Summer, Steven M.

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Mass Loading Effects on Fuel Vapor Concentrations in an Aircraft Fuel Tank Ullage

1999-09-01
By Summer, Steven M.

File Language:

English

Details

Creators:

Summer, Steven M.
Corporate Creators:

United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center. Fire Safety Section
Corporate Contributors:

United States. Department of Transportation. Federal Aviation Administration. Office of Aviation Research
Subject/TRT Terms:
Publication/ Report Number:

DOT/FAA/AR-TN99/65
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Technical Notes
Corporate Publisher:

United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center
Abstract:

This report discusses experiments performed within a simulated fuel tank approximately 1/20 the size of a typical B-7 4 7 center wing fuel tank (CWT). The vapors generated within the ullage of this tank were analyzed under different mass loadings in an effort to determine the effects of the mass loading and fuel distribution. It was determined from these tests that in order to have a substantial effect on the flammability of the vapor within the CWT, the mass loading would have to be somewhere between 0.08 and 0.15 kg/m3. A substantial effect was defined as a minimum 20% decrease in the maximum hydrocarbon count when compared to the average of all tests conducted with larger mass loadings. In addition, it was found that while the distribution of the fuel has no effect on the peak flammability (vapor composition) that is reached, it does have a significant effect on how long it takes to reach the final state. The less dispersed the liquid fuel is, the longer it will take the vapor to reach its maximum flammability point.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/90172/dot_90172_DS1.pdf
File Type:

[PDF - 1.18 MB]
Collection(s):

FAA Fire Safety ; FAA William J. Hughes Technical Center for Advanced Aerospace
Main Document Checksum:

urn:sha-512:ba01e3d15dafe909080bba276b164f7ada73cdd0627a0f2b9bbb7a03b252b8f6e1210aacc7475047450ed30f6a708039ba1189e33ec8868bfcd989d22508b978

File Language:

English

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