Download or read book A Comparison of Flammability Characteristics of Composite and Aluminum Wing Fuel Tanks written by Steven M. Summer and published by . This book was released on 2011 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of the Flammability of Commercial Transport Airplane Wing Fuel Tanks written by William M. Cavage and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Fire Safety Team of the Airport and Aircraft Safety Research and Development Division performed tests at the Federal Aviation Administration (FAA) William J. Hughes Technical Center using the environmental chamber and the air induction facility (wind tunnel) to examine individual effects that contribute to commercial transport wing fuel tank flammability. Additionally, previously acquired wing tank flammability measurements taken during flight tests were compared with the results from the FAA Fuel Air Ratio Calculator in an effort to see if the calculations agreed with existing flight test data. The results of the scale fuel tank testing in the environmental chamber showed that (1) fuel height in the tank had little or no effect on the flammability, (2) increasing the amount of heat on the top surface and a higher ambient temperature caused increased flammability, and (3) lower fuel flash point increased flammability greatly. Wind tunnel tests conducted with a section of a Boeing 727 wing tank showed that, under dynamic airflow conditions, change in ullage temperature was the primary mechanism affecting ullage flammability, not fuel temperature, as observed in environmental chamber tests. Other wind tunnel tests showed that the angle of attack of the fuel tank played little role in reducing fuel tank flammability, but that a cross-venting condition of the fuel tank would lead to a very rapid decrease in hydrocarbon concentration. An input temperature algorithm could be used with the FAA Fuel Air Ratio Calculator to significantly improve predictions of wing tank ullage flammability, based on tests that showed in-flight changes of ullage flammability in a wing tank are driven largely by the ullage temperature. This is very different from what had been shown with a center wing fuel tank, in which fuel temperature continues to be the main driver of flammability even during flight."--Report documentation page

Download or read book Modeling Wing Tank Flammability written by Dhaval D. Dadia and published by . This book was released on 2009 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation into the fire safety of a wing fuel tank has been performed to aid in the effort to eliminate or reduce the possibility of a wing fuel tank explosion in a commercial aircraft. A computational model is built to predict the generation of flammable mixtures in the ullage of wing fuel tanks. The model predicts the flammability evolution within the tank based on in-flight conditions of a wing fuel tank. The model is validated through supporting experiments performed in an altitude chamber, the wind tunnel facility as well as data obtained from flight tests. The results from the experiments are compared to the computational results. Computational results from the altitude chamber follow the general trend of the experimental results, but produce them at a different flash point. This is due to the replenishment of species with lower flash point at the surface of the fuel which emulates the flash point of the entire fuel to be lower. Experimental results for the aluminum wing tests from the wind tunnel experiments are in good agreement with the computational results as well. A simpler model is developed from a program that calculates fuel air ratio within the ullage of fuel tanks in order to reduce the required number of inputs to the model. This model is applied to the data sets for the experiments performed in the altitude chamber and wind tunnel. For the tests conducted in the altitude chamber, the correlation estimates the hydrocarbon concentrations extremely well during ascent and descent. During the on-ground condition the estimation is good, but not as accurate as the ascent or descent conditions. For the tests conducted in the wind tunnel, the computational values follow the general trend of the experimental values, but the computational values estimates the total hydrocarbon concentration approximately 10% lower than the experimental value consistently. Flammability studies are also performed in order to track the effects of temperature, pressure, and oxygen concentration on the upper and lower flammability limits. For the temperature and pressure profiles considered in this work, it is found that the temperature and pressure effects on the flammability limits are minimal. In contrast, the oxygen concentration has a significant effect on the flammability limits of the vapor; the flammable region narrows with a decrease in oxygen concentration.

Download or read book Federal Register written by and published by . This book was released on 2013-12 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence of Jet Fuel on Permeation and Flammability Characteristics of Graphite Epoxy Composites written by and published by . This book was released on 1979 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Graphite epoxy composites were subjected to controlled studies of fuel permeation, fuel immersion and flammability in an effort to judge their safety and effectiveness as a material for use in jet fuel tanks. (Author).

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1972 with total page 1056 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book STAR written by and published by . This book was released on 1973 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Departments of Transportation Treasury the Judiciary Housing and Urban Development and Related Agencies Appropriations for Fiscal Year 2007 written by United States. Congress. Senate. Committee on Appropriations. Subcommittee on Transportation, Treasury, the Judiciary, Housing and Urban Development, and Related Agencies and published by . This book was released on 2006 with total page 1246 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of Turbine Fuel Flammability Within Aircraft Fuel Tanks written by L. J. Nestor and published by . This book was released on 1967 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: The equilibrium flammability envelopes of turbine fuels were determined by both visual and instrumental techniques. The lean and rich limits were found to be linear functions of altitude and temperature when wall effects were reduced and ignition spark energies were high. The linearity of the limits could be altered by increasing the wall effects or decreasing the ignition spark energies. Wide-cut turbine engine fuels, aviation kerosenes and blends of the two types were tested. The flammability characteristics of the fuels at equilibrium were compared to those of the fuel under simulated aircraft dynamic conditions. Aircraft dynamics affect fuel primarily by producing spray. When the point of ignition was not directly within the sprayed fuel, no deviation from the normal equilibrium flammability envelope occurred. When the point of ignition was directly within the spray, the lean flammability limit of the fuel was extended considerably beyond the equilibrium limit.

Download or read book Flammability Characteristics of JP 8 Fuel Vapors Existing Within a Typical Aircraft Fuel Tank written by Steven M. Summer and published by . This book was released on 2001 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Departments of Transportation Treasury the Judiciary Housing and Urban Development and Related Agencies Appropriations for Fiscal Year written by United States. Congress. Senate. Committee on Appropriations and published by . This book was released on 2006 with total page 1204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Departments of Transportation Treasury HUD the Judiciary District of Columbia and Independent Agencies Appropriations for 2007 written by United States. Congress. House. Committee on Appropriations. Subcommittee on the Departments of Transportation, Treasury, HUD, the Judiciary, District of Columbia, and Independent Agencies Appropriations and published by . This book was released on 2006 with total page 1208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA SP written by and published by . This book was released on 1992 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aerospace Materials and Applications written by Biliyar N. Bhat and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The present volume is focused on documenting the novel processing, fabrication, characterization, and testing approaches that are unique to aerospace materials/structures/systems"--Preface.

Download or read book Aeronautical Engineering written by and published by . This book was released on 1992 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).

Download or read book Lightning Protection of Aircraft written by Franklin Fisher and published by CreateSpace. This book was released on 2012-07-13 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an attempt to present under one cover the current state of knowledge concerning the potential lightning effects on aircraft and that means that are available to designers and operators to protect against these effects. The impetus for writing this book springs from two sources- the increased use of nonmetallic materials in the structure of aircraft and the constant trend toward using electronic equipment to handle flight-critical control and navigation function.