♦ Corresponding Author, Chief Technology Officer: [email protected] ABSTRACT Ramgen Power Systems, Inc. (RPS) is developing a family of high performance supersonic compressors that combine many of the aspects of shock compression systems commonly used in supersonic flight inlets with turbo-machinery design practices employed in conventional axial and centrifugal compressor design. The result i...

For the optimal high-efficiency operation of a PEM fuel cell system, temperature, pressure, humidity and mass flow supplied air must be tuned to stack requirements. Especially for aircraft applications, this requires thorough understanding supply system behavior how it changes when ambient pressure is below 1 bar(a) during flight. This work investigates influence low inlet pressures varying tem...

Fuel cell technology is continuously gaining ground in E-mobility applications. cells require a constant supply of pressurized air, for which high-speed turbo compressors with air bearings are an optimal choice to reduce size, guarantee oil-free operation required the lifetime fuel cell, and increase efficiency. However, inverter driving electric motor compressor does not scale down increasing ...

The General Regression Neural Network (GRNN) is briefly introduced. The BIC method for determining the order of Auto Regression (AR) model is employed to select the number of input neurons, and the Genetic Algorithm is applied to calculate the optimal smoothing parameter. The GRNN is used to predict the vibration time series of a large turbo-compressor, and its performance is compared with that...

Electrical on demand supercharging provides an internal combustion engine with the facility to increase its volumetric efficiency without being subject to the mechanical constraints associated with a conventional pressure charging device. This enables improvement in fuel economy through engine downsizing with the added ability to enhance torque. The Visteon Torque Enhancement System (VTES) is a...

The increasing introduction of renewable energy capacity has changed the perspective operation conventional power plants introducing necessity reaching extreme off-design conditions. There is a strong interest in development and optimization technologies, that can be retrofitted to an existing plant enhance flexibility, as well increase performance lower emissions.Under framework European proje...

The article presents the results of development proposals to increase safety margin blades and efficiency a single-stage axial flow turbine compressor small-sized turbo-shaft engine being modernized with use multidiscipline optimization methods. Analysis initial version showed that working is significantly lower than required by strength standards. To eliminate problem encountered task blade wa...