Design tradeoffs of a reciprocating auxiliary power unit
Date
2013
Authors
Renquist, Jacob Vinod, author
Bradley, Thomas H., advisor
Olsen, Daniel, committee member
Young, Peter, committee member
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Abstract
This thesis presents a comparison of reciprocating auxiliary power units to conventional, gas turbine auxiliary power units. A metric of interest is created to represent the specific auxiliary power system weight including the prime mover, generator, gearbox, and fuel consumed. The metric of interest is used to compare the different auxiliary power unit technologies by incorporating detailed engine simulations, auxiliary power unit system weight modeling, and flight path-realized fuel consumption modeling. Results show that reciprocating auxiliary power units can be competitive with gas turbines in near-term, more-electric aircraft applications.
Description
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Subject
APU
auxiliary power unit
diesel
diesel engine
engine
engine design