Aerothermodynamic cycle design and optimization method for aircraft engines

Ford, Sean T.

Title:

Aerothermodynamic cycle design and optimization method for aircraft engines

dc.contributor.advisor	Mavris, Dimitri N.
dc.contributor.author	Ford, Sean T.
dc.contributor.committeeMember	Schutte, Jeff
dc.contributor.committeeMember	Kestner, Brian
dc.contributor.department	Aerospace Engineering
dc.date.accessioned	2015-01-12T20:44:27Z
dc.date.available	2015-01-12T20:44:27Z
dc.date.created	2014-12
dc.date.issued	2014-08-22
dc.date.submitted	December 2014
dc.date.updated	2015-01-12T20:44:27Z
dc.description.abstract	This thesis addresses the need for an optimization method which can simultaneously optimize and balance an aerothermodynamic cycle. The method developed is be able to control cycle design variables at all operating conditions to meet the performance requirements while controlling any additional variables which may be used to optimize the cycle and maintaining all operating limits and engine constraints. The additional variables represent degrees of freedom above what is needed for conservation of mass and energy in the engine system. The motivation for such a method is derived from variable cycle engines, however it is general enough to use with most engine architectures. The method is similar to many optimization algorithms but differs in its implementation to an aircraft engine by combining the cycle balance and optimization using a Newton-Raphson cycle solver to efficiently find cycle designs for a wide range of engine architectures with extra degrees of freedom not needed to balance the cycle. Combination of the optimization with the cycle solver greatly speeds up the design and optimization process. A detailed process description for implementation of the method is provided as well as a proof of concept using several analytical test functions. Finally, the method is demonstrated on a separate flow turbofan model. Limitations and applications of the method are further explored including application to a multi-design point methodology.
dc.description.degree	M.S.
dc.format.mimetype	application/pdf
dc.identifier.uri	http://hdl.handle.net/1853/53006
dc.language.iso	en_US
dc.publisher	Georgia Institute of Technology
dc.subject	Aircraft engines
dc.subject	Optimization
dc.subject	Cycle design
dc.subject	Variable cycle engine
dc.subject	Separate flow turbofan
dc.title	Aerothermodynamic cycle design and optimization method for aircraft engines
dc.type	Text
dc.type.genre	Thesis
dspace.entity.type	Publication
local.contributor.advisor	Mavris, Dimitri N.
local.contributor.corporatename	Daniel Guggenheim School of Aerospace Engineering
local.contributor.corporatename	Aerospace Systems Design Laboratory (ASDL)
local.contributor.corporatename	College of Engineering
local.relation.ispartofseries	Master of Science in Aerospace Engineering
relation.isAdvisorOfPublication	d355c865-c3df-4bfe-8328-24541ea04f62
relation.isOrgUnitOfPublication	a348b767-ea7e-4789-af1f-1f1d5925fb65
relation.isOrgUnitOfPublication	a8736075-ffb0-4c28-aa40-2160181ead8c
relation.isOrgUnitOfPublication	7c022d60-21d5-497c-b552-95e489a06569
relation.isSeriesOfPublication	09844fbb-b7d9-45e2-95de-849e434a6abc
thesis.degree.level	Masters