...Joshua Johnsen; Joshua Melvin; Joshua Drake; Muwanika Jdiobe; Kurt Rouser This paper presents the experimental results of a representative aircraft turbo-electric powertrain. The 180-kW hybrid gas-electric ground test rig was designed, fabricated, and experimentally evaluated. Hybrid turbo-electric...

... the effect of PCJ activation. The advantages are a simple structure and no requirement for in-cylinder pressure data, and only limited experimental tests are needed for model parameter identification. Moreover, the proposed model works well during engine transient operation, with maximum average error...

... response must be adequately characterized for early surge detection. To this aim, a dedicated experimental activity was conducted on a vaneless diffuser turbocharger coupled to a solid oxide fuel cell emulator plant; compressor evolution toward surge was investigated. Several signal processing techniques...

.... This work presents a vibro-acoustic experimental investigation on a centrifugal compressor of an automotive turbocharger aimed to identify and confirm some surge precursor values in correspondence of its inception conditions. The experimental campaign was carried out at the University of Genoa and developed...

... and guaranteeing safe operation. For this reason, it is necessary to develop a monitoring system capable of preventing surge and extending the operating range of these machines, their performance, and reliability to allow the integration with the other plant components. The experimental investigation carried out...

... , C. , Meier , W. , and Aigner , M. , 2011 , “ Experimental Analysis of Confined Jet Flame by Laser Measurement Techniques ,” ASME Paper No. GT2011-45111. 10.1115/GT2011-45111 [7] Zornek , T. , Monz , T. , and Aigner , M. , 2013 , “ Experimentelle...

... as it directly modifies viscosity and clearances of the fluid film bearings. Since a direct experimental identification of the rotor temperature of an automotive turbocharger is not feasible at an acceptable expense, a combination of numerical analysis and experimental identification is applied to investigate...

...Carlo Alberto Niccolini Marmont Du Haut Champ; Paolo Silvestri; Mario Luigi Ferrari; Aristide Fausto Massardo This paper shows signal processing techniques applied to experimental data obtained from a T100 microturbine connected with different volume sizes. This experimental activity was conducted...

.... Sawicki. 18 03 2019 01 04 2019 combustion engines experimental internal combustion engines measurement techniques Measurement of combustion air–fuel-ratio (AFR) and residual gas mass fraction from internal combustion engines provides a useful tool for calibrators...

.... Editor: Jerzy T. Sawicki. 10 08 2018 09 09 2018 aerodynamics computational fluid dynamics experimental fluids power systems steam turbines One of the main applications of steam turbines is for electric power generation. The power-generation percentage for all power...

... aerodynamic loss due to mixing with the mainstream flow. In order to reduce this mixing loss, two distinct ideas for rotor shroud exit cavity geometries were investigated using computational fluid dynamics (CFD) analyses and experimental tests. One idea was an axial fin placed from the shroud downstream...

... of this experimental study is also the combustion performance of syngas/natural gas mixtures at very low loads for two different burners. The paper is structured as follows: The Experimental Setup and Measurements section deals with the test rigs and the measurement techniques. At first, the reformer test rig...

... segment of the turbine inlet. Each transition duct is open on the sides toward the adjacent transition ducts, so that neighboring cans are acoustically connected through a so-called cross-talk open area. This theoretical, numerical, and experimental work discusses the effect that this communication has...

...Andrew J. Provenza; Kirsten P. Duffy; Milind A. Bakhle Boundary layer ingestion (BLI) is a propulsion technology being investigated at NASA by the Advanced Aircraft Transportation Technology (AATT) Program to facilitate a substantial reduction in aircraft fuel burn. In an attempt to experimentally...

... not capture these coherent oscillations in their models. Manuscript received June 22, 2018; final manuscript received June 25, 2018; published online August 31, 2018. Editor: Jerzy T. Sawicki. 22 06 2018 25 06 2018 Combustion Experimental Measurement techniques Shear Flows...

.... The reductions in the leakage significantly exceed the uncertainties of the CFD model and the test rig accuracy. The factors that had the most substantial impact on the leakage reduction were the location, inclination, and thickness of the fins. The experimental results were compared with the calculations...

... of the trade-offs for each pollutant. This paper will focus on the details of NO x formation for high substitution DF engines. Experimental results have demonstrated that NO x emission trends (as a function of lambda) for DF engines differ from both traditional diesel engines and lean burn natural gas (NG...

... Experimental Flame Modeling Thermoacoustics Pilot flames have been traditionally used for improving the lean blowout limits of the gas turbine combustors [ 1 – 10 ]. Effects of pilot flames on improving the static stability have been extensively studied and well understood, with literatures...

... , “ Implementation and Experimental Investigation of Sensorless Control Schemes for PMSM in Super-High Variable Speed Operation ,” Industry Applications Conference (IAS) , Vol. 1 , pp. 483 – 489 . [16] Beechner , T. L. , and Carpenter , A. L. , 2017 , “ A >98% Efficient >150 kRPM High...

... . Manuscript received June 16, 2017; final manuscript received February 19, 2018; published online July 31, 2018. Assoc. Editor: Riccardo Da Soghe. 16 06 2017 19 02 2018 Aerodynamics Computational fluid dynamics Design optimization Experimental Turbines The results...