Global ETD Search
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Showing 1 to 12 of 12 for “"auxiliary power unit"”.
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Ram air turbine enhancement for auxiliary power unit replacement
… aimed to study the possibility of dispensing auxiliary power unit (APU) in aircraft powered by fossil fuels to reduce air pollution and the total fuel cost used in aircraft. Multiple drawbacks were recorded from APU usage, such as relatively high operating cost, undesired emissions, and noise. …
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The Investigation of Combustion and Emissions of Jp8 Fuel in an Auxiliary Power Unit
… evaluate its' effectiveness for application in Auxiliary Power Units (APUs). The new fuel mixtures were created at room temperature. For proper injection, the diesel engine requires a fuel viscosity between 1-10cSt, therefore, the new fuel can contain up to 100% JP-8 (J-100). This was verified …
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Dynamic Synthesis/Design and Operation/Control Optimization Approach applied to a Solid Oxide Fuel Cell based Auxiliary Power Unit under Transient Conditions
… Transient operation as reflected by changes in power demand, shut-down, and start-up are left as secondary tasks to be solved by system and control engineers once the synthesis/design is fixed. However, transient regimes may happen quite often and the system response to them is a critical factor …
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Design and implementation of liquid cooling system for ArchiMITes vehicle
… a lightweight hybrid vehicle with a modular auxiliary power unit. For testing purposes, the vehicle platform will first be built as an all-electric vehicle. It will be powered by five lithium ion batteries that generate a total of 700 W of heat. Without a cooling system, the batteries will …
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Acceleration techniques for the radiative analysis of general computational fluid dynamics solutions using reverse Monte-Carlo ray tracing
… during these studies: an exhaust plume from an auxiliary power unit, and a Boeing 747 in flight. Timing for the baseline and accelerated analyses is provided as well as numerical comparisons for a selected subset.
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A Comprehensive Study on Energy Management Strategy Design of an Extended-Range Electric Vehicle
… the optimal energy consumption. Thirdly, a novel auxiliary power unit charging strategy with multi-object optimization is proposed using Reinforcement learning algorithms on the ERLV platform to achieve high fuel conversion efficiency while maintaining battery charging health. The comparative …
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Using lean enterprise principles to drive quality and on time delivery to customers : a study of the Honeywell Aerospace Engine Assembly and Test Center of Excellence
… to customers for decades. With engine and auxiliary power unit (APU) growth of-9% in 2005, and projected growth similar or greater for 2006, however, some segments of the business are experiencing difficulty in delivering engines on time to customer request dates. In the spirit of Lean …
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A Plug-in Hybrid Electric Vehicle Loss Model to Compare Well-to-Wheel Energy Use from Multiple Sources
… often used with sophisticated models to simulate powertrain operation. A simple method of evaluating technologies, component sizes, and alternative fuels is the goal of the model presented here. The objective of this paper is to define a PHEV model for use in the EcoCAR competition series. E85, …
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Variable Bus Voltage Modeling for Series Hybrid Electric Vehicle Simulation
… the present version of ADVISOR uses a constant power model for the auxiliary power unit (APU) that, while effective for cursory simulation efforts, does not provide for a truly accurate simulation. This thesis describes modifications made to the ADVISOR code to allow for the use of a load …
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A Design Study of Single-Rotor Turbomachinery Cycles
… thrust for aircraft engines and supply shaft power for various applications. They consist of three main components. That is, a compressor followed by a combustion chamber (burner) and a turbine. Both turbine and compressor components are either axial or centrifugal (radial) in design. The …
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Validation of ADVISOR as a Simulation Tool for a Series Hybrid Electric Vehicle Using the Virginia Tech FutureCar Lumina
… industry, and educational partnership in the United States. The major goal of this partnership is to have production vehicles by 2010 to address these concerns. Ideally, these vehicles will achieve three times the current fuel economy while drastically lowering emissions levels, without …