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International patentpendingAlva Alta, all IP ri hts

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Ndilokelwa Fernandes

Optimization of Unmanned PowerAirships for Solar and Wind PowerGeneration and DistributionCAT presentation, November 2010

Ndilokelwa F. Luis

Aerospace Engineering GraduateStudentNo. 61017/[email protected]

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5/11/12 Ndilokelwa Fernandes

the UPAs concept should accommodate different missions/ applications,whereby the present work focus on two exemplary embodiments ;

- unmanned power airships;- large-scale energy generation and distribution;- solar and wind power;- topology optimization;- multidisciplinary analysis and optimization

motivation

Ndilokelwa Fernandes 22

key-words:

goal andprofile:

- goal: preliminary and detail design of two types of UPAs, one for solarand one for wind power generation and distribution;- technology profile: innovative multidisciplinary design and analysis ofthe airship with a structural topology optimization approach and off-

shelve auxiliary technologies, expected to benefit from furtheradvancements on materials and energy storage

applications:

basicconcept (*):

-non tethered robotic airships - unmanned power airships, UPAs -organized in smart swarm carrousels, maximize the power supplycapacity at minimal use and impacts upon territory and biosystem(different from onshore and offshore).(*): international patent pending

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UPAs for airborne solar powergeneration and distribution

- short-range, periodicumbrella embodiment

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LOCATION 51.1445 N 1.4370 W. Copyright 2010 by ASME

generation of solar power in cloudydays

less ground space occupancy

mobility to meet better weatherconditions

motivati

on:

solar irradiance increases withaltitude

Ndilokelwa Fernandes Luis 44

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mission/application:


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initialconfiguration:

Copyright 2009-2010 Alva Alta

thin-film PV cells/ TE systems on top

wireless power transmission

all electric propulsion and navigationsupport systems

LTA oblate spheroid


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conceptualdesign:

speed: wind velocity

basic materials properties

UPA geometry

basic mission requirements

working altitude: h

maximum energy/ powergenerated

cost

UPA size: a and b

Known Results

weight


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5/11/12 Ndilokelwa FernandesNdilokelwa Fernandes Luis

optimization:

nonlinear multivariable optimization using interior point algorithm

mina,b,h

+

. >

0.1

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5/11/12 Ndilokelwa FernandesNdilokelwa Fernandes Luis 99

Iterationevolutions:

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results sofar:

UPAs design concept presentation,

comparatively high energy performance ratios

indicative hovering altitude at ca. 5.000 m

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prospectiveUPA solarumbrella

embodiment:

constant lift, substantial horizontalmaneuverability

hybrid airship


variable shape, extended solararea

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UPAs for airborne wind powergeneration and distribution

- short-range, ongoingcarrousel embodiment

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ongoing generation of wind power, in locations closeto demand

less ground space occupancy

mobility to meet better weatherconditions

motivation:

wind velocity and frequency increases withaltitude

Average windspeed over theNetherlands versus the altitude.

Copyright 2007 by Bas Lansdorp


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mission/application:


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initialconfiguration:


wind turbine/ rotor between torus

bulk energy storage device

all electric propulsion and navigationsupport systems

LTA double torus


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conceptualdesign:


speed: wind velocity

basic materials properties

UPA geometry

basic mission requirements

wind turbine/ rotorproperties

airborne path properties

cost

torus size: R and r

maximum generatedenergy

weight

Copyright2

009-2

010AlvaAlta

2d

r

R

h

Known Results

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5/11/12 Ndilokelwa FernandesNdilokelwa Fernandes Luis

optimization:

nonlinear multivariable optimization using interior point algorithm

minR,r,H,d,B,c,Path ,V,

+

. >

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Iterationevolutions:

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results sofar:


100%

108%

116%124%

132%

140%

148%

156%

164%

172%180%

188%

196%

positive preliminary results

further design concept modelingrequired

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prospectiveUPA windcarrousel

airship:substantially vertical operation

concentric arrangement, multi-body

LTA airship

variable LTA-driven lift, dynamicballast



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UPAs for airborne energygeneration and distribution

- prospective projectdevelopment

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Phase I preliminarydesign:

-finish: 03/2011-05/2011

-35% of Total Research Effort

- results:

implementation of the optimization problem

exact definition of initial structure and loading

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Phase II detaildesign:

-finish: 03/2012-05/2012


structural optimization using a strategy oftopologyoptimization based on level set methodology

structural, fluidic and interaction modeling usingAnsys WorkBench

final and intermediary results visualized inSolidWorks

multidisciplinary analysis and optimization (MAO)strategy having in mind the integration of MAO and

structural topology optimization

-results:

prototype project

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Thesis:

-finish: 09/2012-11/2012


-results:

thesis submission

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International patentpending



Optimization of Unmanned PowerAirships for Solar and Wind PowerGeneration and DistributionCAT presentation, November 2010

Ndilokelwa F. Luis

Aerospace Engineering GraduateStudentNo. 61017/[email protected]

Documents

CAT 2010.11.12