Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Fires in P-3 aircraft oxygen systems
Fires in three P-3 air craft oxygen systems have occurred: one in the Royal Australian Air Force in 1984 and two in the U.S. Navy in 1998 and 2003. All three fires started in the aluminium MCV (manifold and check valve) assembly and produced similar damages to the aircraft in which they occurred. This paper discusses a failure analysis conducted by the NASA (National Aeronautics and Space Administration) Johnson Space Center White Sands Test Facility Oxygen Hazards and Testing Team on the 2003 U.S. Navy VP-62 fire. It was surmised that the fire started due to heat generated by an oxygen leak past a silicone check valve seal or possibly because of particle impact near the seat of one of the MCV assembly check valves. An additional analysis of fires in several check valve poppet seals from other aircraft is discussed. These burned poppet seals came from P-3 oxygen systems that had been serviced at the Naval Air Station in Jacksonville following standard fill procedures. It was concluded that these seal fires occurred due to the heat from compression heating, particle impact, or the heat generated by an oxygen leak past the silicone check valve seal. The fact that catastrophic fires did not occur in the case of each check valve seal fire was attributed to the protective nature of the aluminium oxide layer on the check valve poppets. To prevent future fires of this nature, the U.S. and Canadian fleets of P-3 aircraft have been retrofitted with MCV assemblies with an upgraded design and more burn-resistant materials.
Fires in P-3 aircraft oxygen systems
Fires in three P-3 air craft oxygen systems have occurred: one in the Royal Australian Air Force in 1984 and two in the U.S. Navy in 1998 and 2003. All three fires started in the aluminium MCV (manifold and check valve) assembly and produced similar damages to the aircraft in which they occurred. This paper discusses a failure analysis conducted by the NASA (National Aeronautics and Space Administration) Johnson Space Center White Sands Test Facility Oxygen Hazards and Testing Team on the 2003 U.S. Navy VP-62 fire. It was surmised that the fire started due to heat generated by an oxygen leak past a silicone check valve seal or possibly because of particle impact near the seat of one of the MCV assembly check valves. An additional analysis of fires in several check valve poppet seals from other aircraft is discussed. These burned poppet seals came from P-3 oxygen systems that had been serviced at the Naval Air Station in Jacksonville following standard fill procedures. It was concluded that these seal fires occurred due to the heat from compression heating, particle impact, or the heat generated by an oxygen leak past the silicone check valve seal. The fact that catastrophic fires did not occur in the case of each check valve seal fire was attributed to the protective nature of the aluminium oxide layer on the check valve poppets. To prevent future fires of this nature, the U.S. and Canadian fleets of P-3 aircraft have been retrofitted with MCV assemblies with an upgraded design and more burn-resistant materials.
Fires in P-3 aircraft oxygen systems
Stoltzfus, Joel (Autor:in)
2006
13 Seiten, 13 Bilder, 11 Quellen
Aufsatz (Konferenz)
Englisch
Oxygen Accelerated Fires in Passenger Aircraft Cargo Compartments
| British Library Conference Proceedings | 2001
USING AIRCRAFT ON WILDLAND FIRES
| British Library Online Contents | 2012
The extinction of aircraft crash fires
| TIBKAT | 1976
Fires in reduced oxygen conditions
| British Library Conference Proceedings | 2004
Oxygen fires in aluminum alloy cylinders
| Tema Archiv | 2006