...) and in general, reasonable agreement for ignition delay times and laminar flames speeds. The mechanism was used further in a more complete mechanism to model the combustion of a jet fuel surrogate [ 16 ]. chemical kinetics fuel combustion modeling jet engines ignition flame speed species profiles...

... from the basic engine operability and emissions studies of the alternative fuel blends. 23 06 2011 30 06 2011 06 03 2012 06 03 2012 air pollution control biofuel combustion environmental testing jet engines pyrolysis The Department of Defense (DOD) established...

... of a High Fidelity Aero-Thermodynamic Turbofan Engine Simulation,” ASME Turbo Expo, Jun. 6-10, Vancouver, Canada, Paper No. GT2011-46661). 22 06 2011 05 08 2011 06 03 2012 06 03 2012 aerodynamics flow simulation gas turbines jet engines reduced order systems thermodynamics...

...E. Naderi; N. Meskin; K. Khorasani In this paper, a nonlinear fault detection and isolation (FDI) scheme that is based on the concept of multiple model approach is proposed for jet engines. A modular and a hierarchical architecture is proposed which enables the detection and isolation of both...

...Klaus Brun; Marybeth Nored; Rainer Kurz Significant interest exists in the military and commercial aerospace industry to better predict and improve the durability of gas turbine jet engines that are operating in hostile desert environments, specifically, jet engines that see significant inlet sand...

... loading condition during the bird-ingestion tests mandated for certification by the regulatory agencies. 09 04 2011 11 04 2011 01 09 2011 01 09 2011 blades fans finite element analysis hydrodynamics jet engines Runge-Kutta methods strain gauges time-domain analysis...

...S. Borguet; O. Léonard Least-squares-based methods are very popular in the jet engine community for health monitoring purpose. Their isolation capability can be improved by using a prior knowledge on the health parameters that better matches the expected pattern of the solution i.e., a sparse one...

.../j.conengprac.2008.10.019 Harefors , M. , 1997 , “ Application of H∞ Robust Control to the RM12 Jet Engine ,” Control Eng. Pract. 0967-0661 , 5 ( 9 ), pp. 1189 – 1201 . 10.1016/S0967-0661(97)84358-4 Leith , D. J. , and Leithead , W. E. , 2000 , “ Survey of Gain-Scheduling...

.... , 2003 , “ Towards the Prediction of Noise From Jet Engines ,” Int. J. Heat Fluid Flow 0142-727X , 24 , pp. 551 – 561 . 10.1016/S0142-727X(03)00049-3 Uzun , A. , Lyrintzis , A. S. , and Blaisdell , G. B. , 2004 , “ Coupling of Integral Acoustics Methods With LES for Jet Noise...

... cooling gas turbines jet engines Mach number pressure measurement pressure sensors probes time series Accurate hot gas path measurements (including combustion diagnostics) are recognized as a major need for the assessment of engine component health and performance. This fact has been...

... continuously over the last years. A consequence of these increasing operating conditions are increased bearing temperatures. A state of the art jet engine high speed ball bearing has been modified with an oil channel in the outer diameter of the bearing. This oil channel provides direct cooling of the outer...

... between the low and high compressors in a typical jet engine and an airfoil simulating the engine strut connecting the inner and outer surfaces. Test results showed ice formed on the airfoil and other surfaces in the test section at air temperatures warmer than freezing. However, when both the air...

... to 5.44% for the maneuvers analyzed. 12 04 2010 19 04 2010 12 11 2010 12 11 2010 aerospace propulsion aircraft testing boundary layers computational fluid dynamics cooling distortion jet engines mass transfer military aircraft nozzles supersonic flow thermal energy...

... turbine in an intercooled core with lean-burn combustion technology. aerodynamics combustion design engineering energy consumption heat transfer jet engines risk management On the other hand, airline companies need to continuously reduce their operating costs in order to increase...

... the engine model parameters is independently verified by successful estimation of parameters by nonlinear least-squares estimation. fault diagnosis jet engines least squares approximations parameter estimation wavelet transforms measurement selection system identification fault diagnosis...

... 10 08 2010 compressors design engineering heat transfer jet engines optimisation A range of questions must be addressed to establish a high performance engine-intercooler system. Apart from selecting optimal cycle parameters, the intercooler flow configuration has to be defined...

... Microturbines ,” Appl. Therm. Eng. 1359-4311 , 23 , pp. 1463 – 1487 . 10.1016/S1359-4311(03)00083-8 ceramics gas turbines heat exchangers jet engines power generation reliability silicon compounds Miniature gas turbines producing less than 10 kW of power are of interest for various...

... of fracture are illustrated for a representative gas turbine engine disk geometry. 14 05 2009 05 06 2009 26 05 2010 26 05 2010 fatigue cracks gas turbines jet engines nucleation Probabilistic damage tolerance (PDT) is becoming an established practice for risk assessment...

... decreases by 25.2%. The technology requires further development to meet future noise and emission requirements. 15 04 2009 21 04 2009 24 03 2010 24 03 2010 aircraft gas turbines jet engines Monte Carlo methods thermodynamics environment economics innovative turbofans...

... is discussed from the viewpoint of mixture formation and chemical reaction. 08 04 2009 24 07 2009 27 01 2010 27 01 2010 combustion ignition jet engines ignition delay combustion characteristics gaseous fuel jets hydrogen natural gas methane The use of fossil...