A multi-disciplinary conceptual design methodology for assessing control authority on a hybrid wing body configuration

Garmendia, Daniel Charles

Title:

A multi-disciplinary conceptual design methodology for assessing control authority on a hybrid wing body configuration

dc.contributor.advisor	Mavris, Dimitri N.
dc.contributor.author	Garmendia, Daniel Charles
dc.contributor.committeeMember	Costello, Mark
dc.contributor.committeeMember	Gern, Frank
dc.contributor.committeeMember	German, Brian J.
dc.contributor.committeeMember	Kennedy, Graeme J.
dc.contributor.department	Aerospace Engineering
dc.date.accessioned	2016-01-07T17:22:54Z
dc.date.available	2016-01-07T17:22:54Z
dc.date.created	2015-08
dc.date.issued	2015-07-24
dc.date.submitted	August 2015
dc.date.updated	2016-01-07T17:22:54Z
dc.description.abstract	The primary research objective was to develop a methodology to support conceptual design of the Hybrid Wing Body (HWB) configuration. The absence of a horizontal tail imposes new stability and control requirements on the planform, and therefore requiring greater emphasis on control authority assessment than is typical for conceptual design. This required investigations into three primary areas of research. The first was to develop a method for designing an appropriate amount of redundancy. This was motivated widely varying numbers of trailing edge elevons in the HWB literature, and inadequate explanations for these early design decisions. The method identifies stakeholders, metrics of interest, and synthesizes these metrics using the Breguet range equation for system level comparison of control surface layouts. The second area of research was the development trim analysis methods that could accommodate redundant control surfaces, for which conventional methods performed poorly. A new measure of control authority was developed for vehicles with redundant controls. This is accomplished using concepts from the control allocation literature such as the attainable moment subset and the direct allocation method. The result is a continuous measure of remaining control authority suitable for use during HWB sizing and optimization. The final research area integrated performance and control authority to create a HWB sizing environment, and investigations into how to use it for design space exploration and vehicle optimization complete the methodology. The Monte Carlo Simulation method is used to map the design space, identify good designs for optimization, and to develop design heuristics. Finally, HWB optimization experiments were performed to discover best practices for conceptual design.
dc.description.degree	Ph.D.
dc.format.mimetype	application/pdf
dc.identifier.uri	http://hdl.handle.net/1853/54328
dc.language.iso	en_US
dc.publisher	Georgia Institute of Technology
dc.subject	Hybrid wing body
dc.subject	Blended wing body
dc.subject	Aircraft design
dc.subject	Conceptual design
dc.subject	Design methodology
dc.subject	Control surface layouts
dc.subject	Control redundancy
dc.subject	Control authority
dc.subject	Trim analysis
dc.subject	Multi-disciplinary optimization
dc.subject	Unconventional configurations
dc.subject	Aircraft sizing
dc.title	A multi-disciplinary conceptual design methodology for assessing control authority on a hybrid wing body configuration
dc.type	Text
dc.type.genre	Dissertation
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	Doctor of Philosophy with a Major in Aerospace Engineering
relation.isAdvisorOfPublication	d355c865-c3df-4bfe-8328-24541ea04f62
relation.isOrgUnitOfPublication	a348b767-ea7e-4789-af1f-1f1d5925fb65
relation.isOrgUnitOfPublication	a8736075-ffb0-4c28-aa40-2160181ead8c
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thesis.degree.level	Doctoral