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International Journal of Energetic Materials and Chemical Propulsion

Publication de 6  numéros par an

ISSN Imprimer: 2150-766X

ISSN En ligne: 2150-7678

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.7 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 0.7 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.1 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00016 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.18 SJR: 0.313 SNIP: 0.6 CiteScore™:: 1.6 H-Index: 16

Indexed in

IMPROVEMENT OF A TURBINE ENGINE START BY AN EXTERNAL OXYGEN-RICH GAS GENERATOR

Volume 9, Numéro 1, 2010, pp. 43-54
DOI: 10.1615/IntJEnergeticMaterialsChemProp.v9.i1.30
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RÉSUMÉ

Starting of turbine engines is often required under ambient temperature and pressure that are far from their design values. Under such conditions, less air enters the combustion chamber, precluding more fuel to be burned, and making it difficult to produce sufficient energy to accelerate the engine up to idle speed. Common solutions introduce additional oxygen into the combustion chamber to enable more fuel to burn and improve the combustion efficiency, thus providing more energy to the hot gas driving the turbine to accelerate the rotor. Adding oxygen also enables faster and more reliable starting of turbine engines, even under adverse ambient conditions. Conventional oxygen-addition units require storage and supply systems, which pose a great problem for small turbine engines, where space and weight requirements are typically tight, and reliable starting is often needed. The novel approach presented in this paper uses an external module that supplies hot oxygen-rich gas to the combustion chamber, thus providing both oxygen enrichment and ignition of the air-fuel mixture. Consequently, the starting capability of the engine is enhanced. The module’s exterior location enables easy replacement and/or retrofit. Several modes of implementation and their combination are considered. One implementation may use the hot discharge from a pyrotechnic igniter to thermally decompose a solid oxidizer grain, which releases hot oxygen-rich gaseous products. Another implementation may utilize a uniform oxygen-rich solid-propellant grain, releasing hot oxygen-rich combustion products. Preliminary tests with GAP/KP/AP-based oxygen-rich propellant compositions were conducted.

CITÉ PAR
  1. Song Ma, Jianguo Tan, Sanmai Su, Mingyan Zhu, Optimization for the Starting Process of Turbofan Engine Under High-Altitude Environment, IEEE Access, 6, 2018. Crossref

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