areospace hw1
TRANSCRIPT
-
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