Download or read book Vulnerability Methodology and Protective Measures for Aircraft Fire and Explosion Hazards Volume 3 On Board Inert Gas Generator System OBIGGS Studies Part 3 Aircraft OBIGGS Designs written by and published by . This book was released on 1986 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary performance of on-board inert gas generator systems (OBIGGS) in laboratory and simulated flight tests indicated these systems were suitable for aircraft implementation. Accordingly, preliminary design studies were made to determine the requirements for aircraft OBIGGS installations and to compare the OBIGGS with other fire protection systems. This report presents a technique for establishing the inert gas required for the design mission and discusses OBIGGS installations on a C-5B and an ATF airplane. Both permeable membrane (PM) and molecular sieve (MS) OBIGGS were considered for both airplanes. When all factors were considered the performance and penalties of the PM and MS OBIGGS on these airplanes was comparable. When compared with other fire protection systems, the OBIGGS had significant weight advantages over foam systems and significant cost and logistics advantage over Halon and liquid nitrogen systems.

Download or read book Vulnerability Methodology and Protective Measures for Aircraft Fire and Explosion Hazards Volume 3 On Board Inert Gas Generator System OBIGGS Studies Part 2 Fuel Scrubbing and Oxygen Evolution Tests written by and published by . This book was released on 1986 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: A basic consideration in designing an on-board inert gas generator system (OBIGGS) is to manage the evolution of dissolved oxygen in the fuel such that an inert ullage is maintained. Fuel scrubbing, in which an inert gas is bubbled through the fuel, is the common method of removing dissolved oxygen. Analytical modeling of the scrub gas requirements for fuel scrubbing required experimental data for validation. Tests were conducted to determine if a model based on the ideal gas law, published solubility coefficients, and partial pressure relationships was valid. The excellent agreement between calculated results and test data verified that such a model is valid. Keywords: Fuel scrubbing; Oxygen evolution; Fuel tank inerting; On-board inert gas generator systems; Dissolved gases; Engine fires; Fuel fires.

Download or read book Vulnerability Methodology and Protective Measures for Aircraft Fire and Explosion Hazards Volume 3 On Board Inert Gas Generator System OBIGGS Studies Part 1 OBIGGS Ground Performance Tests written by and published by . This book was released on 1986 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of performance evaluation tests of a molecular sieve (MSIGG) and a permeable membrane inert gas generator (PMIGG) system for airplane fuel tank inerting are presented. The IGG units, sized to inert the wing tanks of a KC-135, and the test facilities at Wright-Patterson AFB are described. Steady state performance envelope, endurance, and KC-135 mission simulation tests are conducted. The weight and fuel penalties of the MSIGG and the PMIGG installed in a KC-135 are compared. Keywords: Engine fires; Fuel fires; Fire protection; Inert gas generator systems; NEA(Nitrogen Enriched Air); Fuel Tank Inerting; OBIGGS (Onboard Inert Gas Generator System); MSIGG; Molecular sieve, PMIGG; Permeable membrane; KC-135 OBIGGS mission simulation.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on with total page 1050 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Department of Defense Bibliography of Logistics Studies and Related Documents written by United States. Defense Logistics Studies Information Exchange and published by . This book was released on 1988 with total page 1120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aeronautical Engineering written by and published by . This book was released on 1988 with total page 518 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 Technical Reports Awareness Circular TRAC written by and published by . This book was released on 1987-12 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aeronautical Engineering A Cumulative Index to a Continuing Bibliography written by and published by . This book was released on 1988 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1988 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1986 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index Keyword A L written by and published by . This book was released on 1988 with total page 1600 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 1988 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Vulnerability Methodology and Protective Measures for Aircraft Fire and Explosion Hazards Volume 1 Executive Summary written by and published by . This book was released on 1986 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the research conducted by the contractor on airplane engine compartment and fuel tank fire safety research. The value of ground testing, using the Aircraft Engine Nacelle (AEN) and the Simulated Aircraft Fuel Tank Environment (SAFTE) facilities, was clearly evident as the testing proceeded. Extinguishant tests of simulated nacelle fires indicated that current criteria for extinguishant concentration and duration were more than adequate for intact nacelles inert gas generator systems (OBIGGS) revealed that both the permeable membrane and molecular sieve adequately inerted the test fuel tank. However, some minor operational difficulties were experienced with both test units which would have to be corrected prior to producing flight hardware. Keywords: Engine fires; Fuel fires, Fire protection; Inerting; OBIGGS; Halon; Nitrogen enriched air.

Download or read book Transportation Weekly Government Abstracts written by and published by . This book was released on 1988 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Vulnerability Methodology and Protective Measures for Aircraft Fire and Explosion Hazards Volume 2 Aircraft Engine Nacelle Fire Test Programs Part 1 Fire Detection Fire Extinguishment and Surface Ignition Studies written by and published by . This book was released on 1986 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fire tests and extinguishant concentration tests were conducted using a simulated portion of the F-16 aircraft engine compartment in the Aircraft Engine Nacelle (AEN) fire test simulator at WPAFB. Combat damage simulation included outer compartment wall penetration allowing either inflow or outflow of ventillation airflow through and external wound and fan perforation or engine bleed air line damage. 'Standard' fire and agent concentration test techniques were developed. Existing specifications were found to be adequate in terms of quantity of fire extinguishing agent. Results also indicated that more rapid agent release resulted in more effective use of the agent. Halon 1301 performed significantly better than Halon 1202, contrary to what the available literature indicated. Fires with combat damage inflow simulation added were the most difficult to extinguish because hot surface ignition sources were created soon after the test fire was ignited. For these, the quantity of agent specified would have been adequate only if the agent reached the fire within a few seconds after ignition. Keywords: Combat damage; Engine compartment extinguishant systems; Fire extinguishant agent evaluation, Halon 1202; Halon 1301; Hot surface ignition, Ultraviolet fire detection system; Ventilation air flow.

Download or read book Vulnerability Methodology and Protective Measures for Aircraft Fire and Explosion Hazards Volume 2 Aircraft Engine Nacelle Fire Test Programs Part 2 Small Scale Testing of Dry Chemical Fire Extinguishants written by and published by . This book was released on 1986 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dry chemical fire extinguishing agents were studied in a simulated small scale aircraft engine nacelle environment to observe the ability of these agents to prevent re-ignition, a known deficiency of the presently used gaseous agents. An injector was developed which effectively dispersed agent into the airstream; a fuel spray behind a flameholder, ignited and sustained by a hot surface, was used as the test scenario. The agents were found to be effective in very small quantities (