... aerospace engines gas turbines natural gas technology The LM2500 and LM6000 dry-low-emissions aero-derivative engines were designed to operate with standard gaseous fuels having modified Wobbe Indices between 40–60. The modified wobbe index (MWI) of a fuel is a measurement of energy content per...

... variables as closely as possible in the least squares sense. An enhancement to the work of Litt, presented by Simon and Garg [( 6 )], selects V* to minimize the theoretical mean squared estimation error in the parameters of interest at a steady-state open-loop linear design point. aerospace...

... is the primary factor affecting fuel-air mixture uniformity. By optimizing the flow rate ratio of the axial jet air in the nozzle section to the swirling jet air in the tube section as well as the axial jet momentum, enhanced fuel-air mixture uniformity can be achieved. aerospace engines combustion...

.... 28 04 2011 28 04 2011 30 12 2011 30 12 2011 aerospace engines combustion computational fluid dynamics evaporation flames sprays Fuel preparation plays a crucial role in almost all aspects of aeroengine combustion. At high power, low NO x emission depends...

... in the mixing zone. The distribution of pilot and main fuel and subsequent mixing affect velocity and temperature fields, emissions, and liner wall temperature as well as the pattern factor at the combustor outlet [( 2 3 4 )]. aerospace engines air pollution chemically reactive flow combustion...

... successful at exposing both the AE majors and the SEM majors to the benefits of “systems thinking” by giving all the opportunity to employ SE tools in the context of a realistic aircraft engine design project. 10 04 2011 27 05 2011 07 12 2011 07 12 2011 aerospace engineering...

... a Control-Based Kalman Filter Algorithm ,” ASME J. Eng. Gas Turbines Power 0742-4795 , 114 ( 2 ), pp. 187 – 195 . 10.1115/1.2906571 aerospace engines aircraft control closed loop systems feedback jet engines linearisation techniques nonlinear control systems Aeroengines...

... to configure and effectively manage flow networks in many forms including a status model, failure modes of the status model, multiple alternative designs, as well as failure modes specific to an alternative design. 02 07 2010 16 07 2010 19 04 2011 19 04 2011 aerospace engines...

... 09 2010 06 04 2011 06 04 2011 aerospace engines aerospace simulation aircraft testing fault location feature extraction gas turbines pattern classification sensors time series aircraft gas turbine engines data-driven fault detection optimal feature extraction...

... points collected with anti-ice bleed valve open 25 05 2010 28 07 2010 24 03 2011 24 03 2011 aerospace engineering aerospace engines condition monitoring data handling helicopters Aircraft operators rely on engine condition monitoring programs to assist them...

... 2010 22 03 2011 22 03 2011 aerospace engines damping frequency-domain analysis harmonics springs (mechanical) time-domain analysis vibrations Of all rotating machines that use squeeze-film damper (SFD) bearings, three-spool aero-engines can be considered as the most...

... 2010 16 03 2011 16 03 2011 aerospace engines air pollution control air pollution measurement losses Accurate measurement of exhaust emissions species is critical to determine the performance of an aircraft engine and to evaluate its impact on local air quality ( 1 2...

... flow separation pumping experiments CFD simulations aerospace engines computational fluid dynamics gas turbines lubricating oils prototypes pumps two-phase flow 29 06 2010 02 07 2010 15 02 2011 15 02 2011 The choice of the model is obviously crucial because...

.... 26 05 2010 22 06 2010 18 11 2010 18 11 2010 aerospace engines aerospace propulsion compressors gas turbines lubricants Turbomachinery built upon unconventional, oil-free, rotor support technologies has been maturing since the middle of the past century. During...

... have been reported for decades. air foil thrust bearing hydrostatic hybrid oil-free turbomachinery aerospace components aerospace engines damping design engineering elasticity finite difference methods friction hydrostatics machine bearings orifices (mechanical...

... the oil flow to the air/oil separator, however, due to the oil flow distribution the thermal effects may lead to high material temperatures and to malfunctions in the engine’s lube system. 18 02 2010 22 06 2010 12 11 2010 12 11 2010 aerospace engines aircraft computational...

... Injection, Effusion Array and Dilution Hole on the Heat Transfer Coefficient of a Real Combustor Liner—Part 1 Experimental Analysis ,” ASME , Paper No. GT2010-22936. 04 05 2010 28 05 2010 29 10 2010 29 10 2010 aerodynamics aerospace engines computational fluid dynamics...

... particle sampling system. 12 03 2010 02 06 2010 26 10 2010 26 10 2010 aerospace engines air pollution measurement design engineering gas turbines Concerns for the environmental effects of submicron particles suspended in the atmosphere have increased in recent years...

... quantitative performance parameters together with qualitative aspects that this “more electric” technology implies. aerospace engines gas turbines magnetic bearings rolling bearings rotors steam turbines vibration control magnetic dampers electromechanical interaction vibration control...

... aerospace engines cooling fuel pumps gears Heat management of fuel and oil systems for turbofans has become a serious problem in current high bypass turbofans with higher fuel efficiency. This is because there is less fuel flow available for oil cooling. The oil that absorbs heat generated...