fabrication - wind tunnel model design

8/11/2019 Fabrication - Wind Tunnel Model Design

1/11

AIA A AlI ,POCO Sol....-

_ I n g Including

tho Now ~ o M z o o

forum

on. AerooPOco

Ex"".111""

AlAA2011-1306

_1 January

20", Orlllnclo, l o ~ o

Part 1: The Wind Tunnel Model Design and Fabrication of

Cal Poly's AMELIA 10 Foot Span Hybrid Wing-Body Low

Noise CESTOL Aircraft

Krj,lina

K. Jam",on I

Oa,id

D,

Mar'ha ll', Rory Goldcn', and Erio

Padano'

California PoiYlechnie Siale Uni"""ity, San Luis Ob"f'

."d

Richard

J.

Gaota'

Georgia Tech Research fnSliMe, A/fanta, GA 303)2-0844

Jay PateTSon'."d Dave

M.,on'

Patersonlal", fne .. Kenl, WA 98031

A coUai>oraUon bet. .een

Coliromia

Polytechnic

Corporation

Georgia Tech

Re.eorch In.tltu'" (GTRij ond DHC Engineering . .

orked on , NASA NRA to de

lop

prodlotlve .apabllJties ror tbe design ond

perform,noe

of Crul,e Emdent, Sbort Tok...Off

ond

Landing

(CESTOL) 'Ub'Dnle

ol..,r.ft, In

addillon, 0 lorge .eal. wind tunDel effort to

,aUdat. tb

e p

. .

didi.e o.pobiJlti

ror thl. NRA for o.rodyn.mic ond

ooou.lle

p.rform.nc. during to!leoff .nd landing ha, boon und.rtak.D.

Tb.

mod.l, Ad

no.d Model

fnr E.tr .me

ift

.nd Impro.ed Aeroacou,llo. (AMELIA),

wa.

designed 0 100

p,,,enger,

N+2 generotlon, reglonal, erul

mol.nt ,bort

tok

. ..

ff

'nd land (CllSTOLj alrUn",

with

hybrid bl.nded wing-body wltb drculallon contrnl nnd upper ,urf. . . blowing. Tbe model

design

wa.

roeu.ed on

ru.Hoylng' .nd nols.

gool

et

ODt by the NASA N+2 deflnUlon. The

AMELIA

hO' a

10 ft

wing

.p.n. P.t.....nL.b.

w

. .

oba

. .

n to build

AMELIA.

Th. Nollon.1

I'UIISoal. AerodynamIc Complex (NFAC) 40

ft

by 80

ft

wind tunnel wa. eho,.n to p.rform

the l.rg....

""I.

wind

runnelte.t

in

tb.

'Dmmer or 2011.

I. Introduction

1Assi.tant Professor, Aero,pace Engineering. San Lei' Obi.po, Ca 93407. AIAA Member,

1 Ass""iato Profossor, Aero.pace Engln.ering, San Lui, Obi,l"',

C.

93407, AIAA Member.

J

Graduat< Stud


2/11

produoe lower "ol,e, lower emi ion,. ond higher p . r f o r t n i n ~ ,ubwnic aircl1lfl

for

'he Nexl Generation Air

Tran,portation SY'lem.

The work provided

in

thi, im'e,tigalion w

an NRA funded by Sub,onio Fi


3/11

Figu.e

I

Conflg"rotion 1

i>

compri>otI of

o high o'pect rotio wing,

o ~ e

the wing

onglne" d

. .

nlolion CDnt.ol

at

the Irailing

otIgo oo w.ttachment.

The lhird configuration wa inspirotl by recent

in 're

in an

.ll

utiiizlng true Blended-Wing-Body (IlWB),

Thi, .i ,raft

mcept is 0 signiflc.nt departure from 'he n

...

t Wo

.irc

...

ft

de,ign,

thot the two rurboron

engines.re

embedded within the "ery thick

ing root; thi, ,an

bo

,oen

in

Fig. 3. The e hau't di,cbarges lhrough

high

a'pect ratio 2_D nozzle

at

'he t",ihng edge uf the ~ e h i l e The

intent i, not only to produce thruM through Ibi, noule throughout

the flight but to create incre.,ed flow circul.tion .round

Ibo

aircraft

generating odditional lift during tekeoff and I.nding.

The flnol and most complex de,ign i, ,hown in Fig. 4, termed

the Diamo"d-Wing-Body (DWB).

It m.y

be Ibought of

lIS

a loined_

Wing wilh a venic.1 'tructural raember joining the fore .nd

.ft

wings

at

,he outor ''Pan poinls,

Th.

int.nt i,

ro

improve locol oir

flow aud mi'ill"to ,hock funn.liou

ot

high suh


4/11

Wing-Boxly-was best ,ulted for the AMELIA le,t. Figure 5 ,hows. rendering of Configuralion 2 In I1lghl 'fter

Figure 5. The

fin.

de,lgn l r o t l o ~ of Conflgurollon Z AME:LIA . rull ole concepluol model in flighl

ohove HowolL

many de'ign refin.menl iteralions,

B. AMI1UA De.lgn

Feoluro.

In

order to uliH,e lhc Configurotlon 2 gc.,metry in a large_,,,,,le wind tunnel

I ."

,"'ting, many de'ign

modifi""tion' were needed. The mo,t 'ignlfi'anl .iterolion 10 the geometry came

in

tho monnling 'y,tom of lhe

wind runnel model. A ,ting

wo-'

cho,en

. .

the ideal melhod to meo,ure aerodynamio fo",e'!IIId momont" mainly

for

its ability to lake measurements non-inlru,iveiy. Dire

.,f Iho

modd 10 lho

'ling

lhrongh lhe .ft end

r.i,ed

ooncern, with di,rurblng lhe fiow

"",uod

the be.ver tail, An underbody mount was d"'igoed to provide

.n

anachment lo""tlon with minim.i flow disturbance, The mount I, faired with a clllffi,hell hl.d. th.t extend,

vertically from the Sling tip. Tho blado mounl

al,o

'o. cost and compl""ity of Ihe model. dual radius flap, of 0".

)0',

60'

.nd 90 deflecllon'

were proposed 10 be manufactured, as oppo>ed

tn

a mochanio.1 nap where tho defleclion angle can

be

valied. The

90'

fiap defleolion

wa,

I.let chonged to

SO'

due to

I"ue,

Wilh

tho

mannfacturing

of

the flap with tho appropri.le

blowing .101 height Th. flap' of the Conflguratlon 2 deslQn were .1", modified to be a singl. cont;nuou, fi.p for

each wing, iu order to redn" the

.mounl

of flow dlsturbonee from disconlinuities of tho flap

surf".

as

well

a,

.llowing for less complkated cOnfiguralion chonQe, while lhe taodol i, monnted on the sting. A cut away ,'iew of

the model, wilh the 0" and

SO

fl.p, i 'hown

in

fig, 7. figure 7 .1'0 highlight, many of AMELIA', unique

f.atnr , ,uoh oa the internal fiow control ,ystems.'he balance block.

,nd

Ih. ,uppor t structure for the over the wing

monnted engine'.

,

Amer;can [nSliNte or Aeron.ulic

nd

Amon.utic,


5/11

Ct:1

r

'Nota: All Dimensions In InGhas

l u r ~

6

A three-view drawing of AMELIA wlIb 'ling-blade attacbment and loll'o,ro. remo.ed.

~

.

fabrication - wind tunnel model design

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