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classifications

  2019-08-19来源:网络

  原标题:classifications

AircraftClassi?cations
Dr.AntonioA.TraniAssociateProfessorDepartmentofCivilEngineering
VirginiaTech
VirginiaTech
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FAAAirportDesignGroupClassi?cation
FAAAircraftDesignGroupClassi?cationUsedinAirportGeometricDesign.
DesignGroupIIIIIIIVVVIWingspan(ft)4949-7879-117118-170171-213214-262ExampleAircraftCessna152-210,BeechcraftA36Saab2000,EMB-120,Saab340,CanadairRJ-100Boeing737,MD-80,AirbusA-320Boeing757,Boeing767,AirbusA-300Boeing747,Boeing777,MD-11,AirbusA-340A3XX-200orVLCA(planned)
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SampleUseofFAADesignCriteria
FAAdesigngroupcriteriaisusefultosizerunways,taxiways,apronareas,andprotectionareasaroundthelandingarea.
CriticalEnginesforforeignobjectdamageShoulder
Shoulder
61m
31m
ShoulderShoulderVLCAonDesignGroupVIRunwayVLCAonDesignGroupVITaxiway
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ICAOAirportDesignGroupClassi?cation
DesignGroup
AB
Wingspan(m)
1515to24
GearWidth(m)
4.54.5to6
ExampleAircraft
Allsingleengineaircraft,SomebusinessjetsCommuteraircraft,LargeBusinessjets(EMB-120,Saab2000,Saab340,etc.)Mediumrangetransports(B727,B737,MD-80,A320)Heavytransports(B757,B767,A300)Heavytransportaircraft(Boeing747,L-1011,MD-11,DC-10)
CDE
24to3636to5252to65
6to99to149to14
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ATCApproachSpeedClassi?cation
Group
AB
ApproachSpeed(knots)
9191-120
ExampleAircraft
Allsingleengineaircraft,BeechcraftBaron58,Businessjetsandcommuteraircraft(Beech1900,Saab2000,Saab340,Embraer120)Med.andShortRangeTransports(Boeing727,B737,MD-80,A320,F100,B757,etc.)Heavytransports(Boeing747,L-1011,MD-11,DC10,A340,A300)BACConcordeandmilitaryaircraft
C
121-140
D
141-165
E
166
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AircraftWakeVortexClassi?cation
GroupSmallTakeoffGrossWeight(lb)41,000ExampleAircraftAllsingleengineaircraft,lighttwins,mostbusinessjetsandcommuteraircraftLargeturbopropcommuters,shortandmediumrangetransportaircraft(MD80,B737,B727,A320,F100,etc.)Boeing757,Boeing747,DouglasDC-10,MD-11,AirbusA-300,AirbusA-340,LockheedL-1011
Large
41,000-255,000
Heavy
255,000
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TheWakeVortexPhenomena
?
ResultingfromthegenerationofliftaroundathreedimensionalwingWakevortextangentialspeedscanreachupto70m/s(beyondtheFARPart25certi?cationcriteriaofcommercialaircraft)
?
60-70m/s
VortexWake
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TypicalVLCAAircraftSpeci?cations
ParameterPassengerCapacityDesiredRangeSpeedRunwayLengthRemarks650passengersinathree-classlayoutpluscrew13,000Kilometerswith1.50hourreserveMach0.85at11.0kmUseofconventionalrunways(i.e.,3,300matMTOWandSeaLevelISA)
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VLCAAircraft
VLCABoeing747-400
24.87m
14o75.67m
Four311.8kNTurbofanEnginesMTOW=5,400kNS=700m2AR=9.5
Payload=650passengersDesignRange=13,000Km.
12o81.5m78.57m.
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WakeVortexEquations
4mgΓ=------------πρVb
where,Γisthevortexcirculation(inm2/s),mgisthegrossweightofthewakegeneratingaircraft(N.),ρistheairdensity(kg/m3),Visthetrueairspeed(m/s),andbistheaircraftwingspan(m).
Vt
y2-------Γ=--------1e4εt
2πy
where,Vtisthetangentialvelocityrightorleftfromvortexcore(m./sec.),yisthespanwisecoordinatemeasuredfromthevortexcorelocation,εisthevortexdecayvaluewhichhasbeenfoundtobedependentuponthestrengthofthecirculation,andtisthetimebehindthewakegeneratingaircraft(inseconds).
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TangentialVelocityPro?les
7654
CleanaircraftSpeed=150knotsSeaLevelISA
VLCA(4,400kN)
32102030
VortexCoresLockheedC5A(2,060kN)
40
50
60
70
80
90
LateralDistancefromCenterofFuselage(m.)
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ProjectedSeparationCriteria
24.0
Small(Learjet23)Medium(DC9)Large(B757)
20.0
16.0
Heavy(747)VLCA
12.0
8.0
4.00.0750.01500.02250.03000.03750.04500.05250.0
LeadingAircraftWeight(kN)
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SmallAircraft
Single-EngineGATwin-EngineGA
Cessna172(Skyhawk)Beechcraft58TC(Baron)
BeechcraftA36(Bonanza)
Cessna421C(GoldenEagle)
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CorporateAircraft
Raytheon-BeechcraftKingAirB300
CessnaCitationII
GulfstreamGV
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CommuterAircraft
Embraer120(Brasilia)
BombardierDHC-8(Dash8)
Saab230B
BombardierRegionalJet
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Short-HaulTransportAircraft
FokkerF100
AirbusA-320
Boeing737-300
McDonnellDouglasMD82
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Medium-HaulTransportAircraft
BeoingB727-200
Boeing757-200
AirbusA300-600R
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Long-HaulTransportAircraft
AirbusA340-200
McDonnell-DouglasMD-11
Boeing777-200
Boeing747-400
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