7/29/2019 AREOSPACE HW1

1/6

TysonBe

irt EMCH577AER SPACESTRI TURESHW1 08302012

7/29/2019 AREOSPACE HW1

2/6

TysonBe

irt EMCH577AER SPACESTRI TURESHW1 08302012

7/29/2019 AREOSPACE HW1

3/6

TysonBevirt EMCH577AEROSPACESTRICTURESHW1 08302012

2.[30points](Aircraftwingandfuselagestructures)Findanimageofaircraft wingand

fuselagestructuresfromonlinewebsitesorreferencebooks(pleaseincludeinformationaboutthe

imagesource).Listandindicate keystructuralcomponentsusedinaircraftwingandfuselage

structures.

Sources:

Image1, http://amysartblog.blogspot.com/2009/10/researchwingstructures.html

Image2,http://heritageconcorde.com/?page_id=342

7/29/2019 AREOSPACE HW1

4/6

TysonBe

1. R2. S3. S

1. F2. S3. S

irt

ibs

rings

ars

ame

ringers

in(prettyo

EM

viouswhatt

CH577AER

heskinisan

SPACESTRI

hardtodra

TURESHW1

anarrowt atcouldnt

0830

emisinterpr

2012

eted)

7/29/2019 AREOSPACE HW1

5/6

TysonBevirt EMCH577AEROSPACESTRICTURESHW1 08302012

3.[40points](Aircraftmaterials)Whatarethetypicalmaterialsusedforaircraftstructures?Find

theirmaterialproperties(e.g.,density,stiffness,andstrength)anduniquecharacteristics

CFRP:Dificult

to

predict

fatigue

life.

Very

very

high

specific

strength.

Rather

expensive.

Very

customizabledependingonanticipatedloads.Materialpropertieschangewithtemperatureand

humidity.Canbedifficulttobindtoothermaterialswithoutlossesofstrength.Listedpropertiesare

examplesandshouldnotbeconsideredasabsolutes.Compositesareverycustomizable.

Density:From1.41.6g/cm3

Stiffness: Youngsmodulus70175GPa

Strength:ULTTensileyieldstrength6001500MPa

Temperaturerange:

Wide

variation

depending

on

matrix

and

design

Aluminum:Easytomachineandbend.Goodspecificstrength.Somewhatinexpensive.

Density:From2.53.5g/cm3

Stiffness: Youngsmodulus912ksi

Strength:Tensileyieldstrength2060ksiCompressiveyieldstrength1154ksi

MeltingPoint:

800

1200F

Titanium:Workswellinelevatedtemperatureenvironments.Corrosionresistanceisgood(specifically

galvanic).Expensiveandhardtoworkwith(verydifficulttowieldandpreventoxygeninfiltration).

Density:From4.54.8g/cm3

Stiffness: Youngsmodulus75120GPA

Strength:Tensileyieldstrength2401170MPa

MeltingPoint:15201710F

7/29/2019 AREOSPACE HW1

6/6

TysonBevirt EMCH577AEROSPACESTRICTURESHW1 08302012

Steels:Verystrongandnormallycheap(dependingonalloy),butisheavy.Mechanicalcharacteristics

varywidelybydesiredalloy.

Density:From7.68.8g/cm3

Stiffness: Youngsmodulus~29700ksi

Strength:Tensileyieldstrength30300ksi

MeltingPoint:24002700F

Ceramics:Veryveryhighheatandcorrosionresistancetypically.Theytendtobeverybrittleand

susceptibletocracks.

Density:From1.62g/cm3

Stiffness: Youngsmodulus95GPa

Strength:Tensileyieldstrength~700MPa

MeltingPoint:Retainspropertiesabove2000C