SlideShare a Scribd company logo
LANDING GEAR DESIGN
-to provide adequate clearance b/w prop.Tips n ground
-to permit the plane to rotate on both taking off n landing so that
wings AoA come close to the stalling angle of airfoil
-the airfoil characteristics n Rn at landing n takeoff speed
-adjustment of section values to those for wing’s AR n plan form
-the effect on the stalling angle of flaps when extended.
-the impact of ground effect
- Nasa droop increases landing/takeoff angles
Landing gear
Fore –plane characteristics
To estimate the landing/takeoff speed n angle
-Section value adjustments
-High lift devices –takeoffs r
optional ;landings r unavoidable
-Ground effect-
-reduction in stall AoA n in induced
drag
NASA safe wing droop
delays tip stalling n
provides effective aileron
in stall
-Occupies 38% of semi
span
-Provides 4 degree more in
takeoff/landing
- longer landing gear
increases tail angle that
brings AoA attack above
the stall for
takeoffs/landings
- reduce the tail angle to
avoid the stall
-Longer landing gear
increases weight n drag
Power loading
-cid- cubic inch of engine displacement
CG & Landing gear
-CG shifts :combustion of fuel
-types of LG-
-tricycle-front wheel steerable
-tail dragger-tail wheel steerable
Landing gear dynamic
Tricycle gear-
-prevents nosing over
-tail skid rests on the ground n
CG shifts aft wheel axel then it
will stay tail download
-to prevent this LG shifted 5%
of MAC aft CG
-a very high thrust line n
fuselage upsweep is needed to
avoid long LG n prop.
protection -crane
-high tail moves wheel axel
farther behind the CG requires
heavy up –elevator deflection
for takeoff
Tail dragger –
-disadvantages-nose over , liftoff
prob.
Detail design
 To locate LG
 Tricycle gear
 Tail dragger
Tread width
-wheel tread is 25% of AR 6 span
-Static load squat
-Wheel diameter for paved runways 2
inch,grass-2.25 or 3
Nose n tail wheel design
-
Main LG legs
-should be continuous
piece of metal from
wheel to wheel so that
bending loads do not hv
to b absorbed by
fuselage
Landing gear design

More Related Content

What's hot

Flight control systems
Flight control systemsFlight control systems
Flight control systems
Talha Karim
 
Landing gear
Landing gear Landing gear
Landing gear
SatyendraUpadhyay8
 
Aircraft control systems
Aircraft control systemsAircraft control systems
Aircraft control systems
Sanjay Singh
 
Airplane (fixed wing aircraft) configuration and various parts | Flight Mecha...
Airplane (fixed wing aircraft) configuration and various parts | Flight Mecha...Airplane (fixed wing aircraft) configuration and various parts | Flight Mecha...
Airplane (fixed wing aircraft) configuration and various parts | Flight Mecha...
Age of Aerospace
 
Aircraft landing gear system
Aircraft landing gear systemAircraft landing gear system
Aircraft landing gear system
Krishikesh Singh
 
CFD analysis of aerofoil
CFD analysis of aerofoilCFD analysis of aerofoil
CFD analysis of aerofoil
Neel Thakkar
 
Basic Aerodynamics and Flight Controls
Basic  Aerodynamics and Flight ControlsBasic  Aerodynamics and Flight Controls
Basic Aerodynamics and Flight Controls
Kevin McNulty
 
Classification of Aircraft | Flight Mechanics | GATE Aerospace
Classification of Aircraft | Flight Mechanics | GATE AerospaceClassification of Aircraft | Flight Mechanics | GATE Aerospace
Classification of Aircraft | Flight Mechanics | GATE Aerospace
Age of Aerospace
 
Basicaircraftstructure 110325070203-phpapp02
Basicaircraftstructure 110325070203-phpapp02Basicaircraftstructure 110325070203-phpapp02
Basicaircraftstructure 110325070203-phpapp02
Mohammad Abu Hayyeh
 
Landing Gear
Landing GearLanding Gear
Landing Gear
SatyendraUpadhyay8
 
Landing gear
Landing gearLanding gear
Helicopter aerodynamics
Helicopter aerodynamicsHelicopter aerodynamics
Helicopter aerodynamics
Bazil M H
 
Parts of Airplanes
Parts of AirplanesParts of Airplanes
Parts of Airplanes
Denise Legore Seawood
 
9. approach and landing
9. approach and landing9. approach and landing
9. approach and landing
chococrispis37
 
helicopter-aerodynamics
 helicopter-aerodynamics helicopter-aerodynamics
helicopter-aerodynamics
ravi malla thakuri
 
Aircraft flap system
Aircraft flap systemAircraft flap system
Aircraft flap system
amineshinobie
 
B737 NG Landing gear
B737 NG Landing gearB737 NG Landing gear
B737 NG Landing gear
theoryce
 
High lift devices
High lift devicesHigh lift devices
High lift devices
Gurjit Singh Bal
 
Cabin Interior And Ice and Rain System
Cabin Interior And Ice and Rain SystemCabin Interior And Ice and Rain System
Cabin Interior And Ice and Rain System
Bai Haqi
 
Aircraft Wheel and breaks
Aircraft Wheel and breaksAircraft Wheel and breaks
Aircraft Wheel and breaks
Dushan Wijesingha
 

What's hot (20)

Flight control systems
Flight control systemsFlight control systems
Flight control systems
 
Landing gear
Landing gear Landing gear
Landing gear
 
Aircraft control systems
Aircraft control systemsAircraft control systems
Aircraft control systems
 
Airplane (fixed wing aircraft) configuration and various parts | Flight Mecha...
Airplane (fixed wing aircraft) configuration and various parts | Flight Mecha...Airplane (fixed wing aircraft) configuration and various parts | Flight Mecha...
Airplane (fixed wing aircraft) configuration and various parts | Flight Mecha...
 
Aircraft landing gear system
Aircraft landing gear systemAircraft landing gear system
Aircraft landing gear system
 
CFD analysis of aerofoil
CFD analysis of aerofoilCFD analysis of aerofoil
CFD analysis of aerofoil
 
Basic Aerodynamics and Flight Controls
Basic  Aerodynamics and Flight ControlsBasic  Aerodynamics and Flight Controls
Basic Aerodynamics and Flight Controls
 
Classification of Aircraft | Flight Mechanics | GATE Aerospace
Classification of Aircraft | Flight Mechanics | GATE AerospaceClassification of Aircraft | Flight Mechanics | GATE Aerospace
Classification of Aircraft | Flight Mechanics | GATE Aerospace
 
Basicaircraftstructure 110325070203-phpapp02
Basicaircraftstructure 110325070203-phpapp02Basicaircraftstructure 110325070203-phpapp02
Basicaircraftstructure 110325070203-phpapp02
 
Landing Gear
Landing GearLanding Gear
Landing Gear
 
Landing gear
Landing gearLanding gear
Landing gear
 
Helicopter aerodynamics
Helicopter aerodynamicsHelicopter aerodynamics
Helicopter aerodynamics
 
Parts of Airplanes
Parts of AirplanesParts of Airplanes
Parts of Airplanes
 
9. approach and landing
9. approach and landing9. approach and landing
9. approach and landing
 
helicopter-aerodynamics
 helicopter-aerodynamics helicopter-aerodynamics
helicopter-aerodynamics
 
Aircraft flap system
Aircraft flap systemAircraft flap system
Aircraft flap system
 
B737 NG Landing gear
B737 NG Landing gearB737 NG Landing gear
B737 NG Landing gear
 
High lift devices
High lift devicesHigh lift devices
High lift devices
 
Cabin Interior And Ice and Rain System
Cabin Interior And Ice and Rain SystemCabin Interior And Ice and Rain System
Cabin Interior And Ice and Rain System
 
Aircraft Wheel and breaks
Aircraft Wheel and breaksAircraft Wheel and breaks
Aircraft Wheel and breaks
 

Similar to Landing gear design

Fixed wing aircrafts
Fixed wing aircraftsFixed wing aircrafts
Fixed wing aircrafts
Blesson[BMS] Easo Varghese
 
Increasing Downforce In High-Speed Vehicles Using Wheel Rotation
Increasing Downforce In High-Speed Vehicles Using Wheel RotationIncreasing Downforce In High-Speed Vehicles Using Wheel Rotation
Increasing Downforce In High-Speed Vehicles Using Wheel Rotation
IRJET Journal
 
Cg location
Cg locationCg location
Cg location
Trilochan K.
 
Aerodynamics effectonformulaonecarcfd rajkamal
Aerodynamics effectonformulaonecarcfd rajkamalAerodynamics effectonformulaonecarcfd rajkamal
Aerodynamics effectonformulaonecarcfd rajkamal
MELISSATRUJILLO15
 
LIFTING PLAN FLARE-KRB.pdf
LIFTING PLAN FLARE-KRB.pdfLIFTING PLAN FLARE-KRB.pdf
LIFTING PLAN FLARE-KRB.pdf
NanangArief2
 
Conceptual design of a WIG Aircraft
Conceptual design of a WIG AircraftConceptual design of a WIG Aircraft
Conceptual design of a WIG Aircraft
Sri Raghavan
 
LANDING GEAR FOR AIRCRAFT
LANDING GEAR FOR AIRCRAFTLANDING GEAR FOR AIRCRAFT
LANDING GEAR FOR AIRCRAFT
Bai Haqi
 
Aircraft Design Thesis Report
Aircraft Design Thesis ReportAircraft Design Thesis Report
Aircraft Design Thesis Report
MuhammedAhnuf
 
Computer Aided Design and Stress Analysis of Nose Landing Gear Barrel (NLGB)
Computer Aided Design and Stress Analysis of Nose Landing Gear Barrel (NLGB)Computer Aided Design and Stress Analysis of Nose Landing Gear Barrel (NLGB)
Computer Aided Design and Stress Analysis of Nose Landing Gear Barrel (NLGB)
IJERA Editor
 
Presentation2
Presentation2Presentation2
Presentation2
Avishkar Bhoskar
 
Citrus-College-CDR-Presentation
Citrus-College-CDR-PresentationCitrus-College-CDR-Presentation
Citrus-College-CDR-Presentation
Joseph Molina
 
Suspension Design casestudy
 Suspension Design casestudy Suspension Design casestudy
Suspension Design casestudy
Pranav Nigam
 
Forklift range
Forklift rangeForklift range
Canard,tandem wings,three surfaced planes part 1.
Canard,tandem wings,three surfaced planes part 1.Canard,tandem wings,three surfaced planes part 1.
Canard,tandem wings,three surfaced planes part 1.
Trilochan K.
 
SEM GRADER CATALOGY SPECIFICATIONS AND PARTS
SEM GRADER CATALOGY SPECIFICATIONS AND PARTSSEM GRADER CATALOGY SPECIFICATIONS AND PARTS
SEM GRADER CATALOGY SPECIFICATIONS AND PARTS
ENGBARAKAJOEL
 
Construction equipments
Construction equipmentsConstruction equipments
Construction equipments
swift_talk
 
1. Basic Costruction Machine.pdf
1. Basic Costruction Machine.pdf1. Basic Costruction Machine.pdf
1. Basic Costruction Machine.pdf
antodenny
 
Eagle Tugs Tt Series Technical Brief
Eagle Tugs   Tt Series Technical BriefEagle Tugs   Tt Series Technical Brief
Eagle Tugs Tt Series Technical Brief
Akinleye
 
IRJET- Design of the Tadpole Type Three-Wheel Vehicle with Dynamic Condit...
IRJET-  	  Design of the Tadpole Type Three-Wheel Vehicle with Dynamic Condit...IRJET-  	  Design of the Tadpole Type Three-Wheel Vehicle with Dynamic Condit...
IRJET- Design of the Tadpole Type Three-Wheel Vehicle with Dynamic Condit...
IRJET Journal
 
2015 UTSA Baja SAE Design Report
2015 UTSA Baja SAE Design Report2015 UTSA Baja SAE Design Report
2015 UTSA Baja SAE Design Report
Chase Jaffray
 

Similar to Landing gear design (20)

Fixed wing aircrafts
Fixed wing aircraftsFixed wing aircrafts
Fixed wing aircrafts
 
Increasing Downforce In High-Speed Vehicles Using Wheel Rotation
Increasing Downforce In High-Speed Vehicles Using Wheel RotationIncreasing Downforce In High-Speed Vehicles Using Wheel Rotation
Increasing Downforce In High-Speed Vehicles Using Wheel Rotation
 
Cg location
Cg locationCg location
Cg location
 
Aerodynamics effectonformulaonecarcfd rajkamal
Aerodynamics effectonformulaonecarcfd rajkamalAerodynamics effectonformulaonecarcfd rajkamal
Aerodynamics effectonformulaonecarcfd rajkamal
 
LIFTING PLAN FLARE-KRB.pdf
LIFTING PLAN FLARE-KRB.pdfLIFTING PLAN FLARE-KRB.pdf
LIFTING PLAN FLARE-KRB.pdf
 
Conceptual design of a WIG Aircraft
Conceptual design of a WIG AircraftConceptual design of a WIG Aircraft
Conceptual design of a WIG Aircraft
 
LANDING GEAR FOR AIRCRAFT
LANDING GEAR FOR AIRCRAFTLANDING GEAR FOR AIRCRAFT
LANDING GEAR FOR AIRCRAFT
 
Aircraft Design Thesis Report
Aircraft Design Thesis ReportAircraft Design Thesis Report
Aircraft Design Thesis Report
 
Computer Aided Design and Stress Analysis of Nose Landing Gear Barrel (NLGB)
Computer Aided Design and Stress Analysis of Nose Landing Gear Barrel (NLGB)Computer Aided Design and Stress Analysis of Nose Landing Gear Barrel (NLGB)
Computer Aided Design and Stress Analysis of Nose Landing Gear Barrel (NLGB)
 
Presentation2
Presentation2Presentation2
Presentation2
 
Citrus-College-CDR-Presentation
Citrus-College-CDR-PresentationCitrus-College-CDR-Presentation
Citrus-College-CDR-Presentation
 
Suspension Design casestudy
 Suspension Design casestudy Suspension Design casestudy
Suspension Design casestudy
 
Forklift range
Forklift rangeForklift range
Forklift range
 
Canard,tandem wings,three surfaced planes part 1.
Canard,tandem wings,three surfaced planes part 1.Canard,tandem wings,three surfaced planes part 1.
Canard,tandem wings,three surfaced planes part 1.
 
SEM GRADER CATALOGY SPECIFICATIONS AND PARTS
SEM GRADER CATALOGY SPECIFICATIONS AND PARTSSEM GRADER CATALOGY SPECIFICATIONS AND PARTS
SEM GRADER CATALOGY SPECIFICATIONS AND PARTS
 
Construction equipments
Construction equipmentsConstruction equipments
Construction equipments
 
1. Basic Costruction Machine.pdf
1. Basic Costruction Machine.pdf1. Basic Costruction Machine.pdf
1. Basic Costruction Machine.pdf
 
Eagle Tugs Tt Series Technical Brief
Eagle Tugs   Tt Series Technical BriefEagle Tugs   Tt Series Technical Brief
Eagle Tugs Tt Series Technical Brief
 
IRJET- Design of the Tadpole Type Three-Wheel Vehicle with Dynamic Condit...
IRJET-  	  Design of the Tadpole Type Three-Wheel Vehicle with Dynamic Condit...IRJET-  	  Design of the Tadpole Type Three-Wheel Vehicle with Dynamic Condit...
IRJET- Design of the Tadpole Type Three-Wheel Vehicle with Dynamic Condit...
 
2015 UTSA Baja SAE Design Report
2015 UTSA Baja SAE Design Report2015 UTSA Baja SAE Design Report
2015 UTSA Baja SAE Design Report
 

Recently uploaded

哪里办理美国中央华盛顿大学毕业证双学位证书原版一模一样
哪里办理美国中央华盛顿大学毕业证双学位证书原版一模一样哪里办理美国中央华盛顿大学毕业证双学位证书原版一模一样
哪里办理美国中央华盛顿大学毕业证双学位证书原版一模一样
qo1as76n
 
Practical eLearning Makeovers for Everyone
Practical eLearning Makeovers for EveryonePractical eLearning Makeovers for Everyone
Practical eLearning Makeovers for Everyone
Bianca Woods
 
一比一原版马里兰大学毕业证(UMD毕业证书)如何办理
一比一原版马里兰大学毕业证(UMD毕业证书)如何办理一比一原版马里兰大学毕业证(UMD毕业证书)如何办理
一比一原版马里兰大学毕业证(UMD毕业证书)如何办理
9lq7ultg
 
一比一原版肯特大学毕业证UKC成绩单一模一样
一比一原版肯特大学毕业证UKC成绩单一模一样一比一原版肯特大学毕业证UKC成绩单一模一样
一比一原版肯特大学毕业证UKC成绩单一模一样
tobbk6s8
 
原版制作(MDIS毕业证书)新加坡管理发展学院毕业证学位证一模一样
原版制作(MDIS毕业证书)新加坡管理发展学院毕业证学位证一模一样原版制作(MDIS毕业证书)新加坡管理发展学院毕业证学位证一模一样
原版制作(MDIS毕业证书)新加坡管理发展学院毕业证学位证一模一样
hw2xf1m
 
LGBTQIA Pride Month presentation Template
LGBTQIA Pride Month presentation TemplateLGBTQIA Pride Month presentation Template
LGBTQIA Pride Month presentation Template
DakshGudwani
 
一比一原版(LaTrobe毕业证书)拉筹伯大学毕业证如何办理
一比一原版(LaTrobe毕业证书)拉筹伯大学毕业证如何办理一比一原版(LaTrobe毕业证书)拉筹伯大学毕业证如何办理
一比一原版(LaTrobe毕业证书)拉筹伯大学毕业证如何办理
67n7f53
 
NHL Stenden University of Applied Sciences Diploma Degree Transcript
NHL Stenden University of Applied Sciences Diploma Degree TranscriptNHL Stenden University of Applied Sciences Diploma Degree Transcript
NHL Stenden University of Applied Sciences Diploma Degree Transcript
lhtvqoag
 
一比一原版(soton毕业证书)英国南安普顿大学毕业证在读证明如何办理
一比一原版(soton毕业证书)英国南安普顿大学毕业证在读证明如何办理一比一原版(soton毕业证书)英国南安普顿大学毕业证在读证明如何办理
一比一原版(soton毕业证书)英国南安普顿大学毕业证在读证明如何办理
yufen5
 
Divertidamente SLIDE.pptxufururururuhrurid8dj
Divertidamente SLIDE.pptxufururururuhrurid8djDivertidamente SLIDE.pptxufururururuhrurid8dj
Divertidamente SLIDE.pptxufururururuhrurid8dj
lunaemel03
 
Heuristics Evaluation - How to Guide.pdf
Heuristics Evaluation - How to Guide.pdfHeuristics Evaluation - How to Guide.pdf
Heuristics Evaluation - How to Guide.pdf
Jaime Brown
 
Introduction to User experience design for beginner
Introduction to User experience design for beginnerIntroduction to User experience design for beginner
Introduction to User experience design for beginner
ellemjani
 
Best Digital Marketing Strategy Build Your Online Presence 2024.pptx
Best Digital Marketing Strategy Build  Your Online Presence 2024.pptxBest Digital Marketing Strategy Build  Your Online Presence 2024.pptx
Best Digital Marketing Strategy Build Your Online Presence 2024.pptx
pavankumarpayexelsol
 
一比一原版(Vancouver毕业证书)温哥华岛大学毕业证如何办理
一比一原版(Vancouver毕业证书)温哥华岛大学毕业证如何办理一比一原版(Vancouver毕业证书)温哥华岛大学毕业证如何办理
一比一原版(Vancouver毕业证书)温哥华岛大学毕业证如何办理
ijk38lw
 
一比一原版南安普顿索伦特大学毕业证Southampton成绩单一模一样
一比一原版南安普顿索伦特大学毕业证Southampton成绩单一模一样一比一原版南安普顿索伦特大学毕业证Southampton成绩单一模一样
一比一原版南安普顿索伦特大学毕业证Southampton成绩单一模一样
3vgr39kx
 
定制美国西雅图城市大学毕业证学历证书原版一模一样
定制美国西雅图城市大学毕业证学历证书原版一模一样定制美国西雅图城市大学毕业证学历证书原版一模一样
定制美国西雅图城市大学毕业证学历证书原版一模一样
qo1as76n
 
ADESGN3S_Case-Study-Municipal-Health-Center.pdf
ADESGN3S_Case-Study-Municipal-Health-Center.pdfADESGN3S_Case-Study-Municipal-Health-Center.pdf
ADESGN3S_Case-Study-Municipal-Health-Center.pdf
GregMichaelTapawan
 
一比一原版(LSBU毕业证书)伦敦南岸大学毕业证如何办理
一比一原版(LSBU毕业证书)伦敦南岸大学毕业证如何办理一比一原版(LSBU毕业证书)伦敦南岸大学毕业证如何办理
一比一原版(LSBU毕业证书)伦敦南岸大学毕业证如何办理
k7nm6tk
 
International Upcycling Research Network advisory board meeting 4
International Upcycling Research Network advisory board meeting 4International Upcycling Research Network advisory board meeting 4
International Upcycling Research Network advisory board meeting 4
Kyungeun Sung
 
Getting Data Ready for Culture Hack by Neontribe
Getting Data Ready for Culture Hack by NeontribeGetting Data Ready for Culture Hack by Neontribe
Getting Data Ready for Culture Hack by Neontribe
Harry Harrold
 

Recently uploaded (20)

哪里办理美国中央华盛顿大学毕业证双学位证书原版一模一样
哪里办理美国中央华盛顿大学毕业证双学位证书原版一模一样哪里办理美国中央华盛顿大学毕业证双学位证书原版一模一样
哪里办理美国中央华盛顿大学毕业证双学位证书原版一模一样
 
Practical eLearning Makeovers for Everyone
Practical eLearning Makeovers for EveryonePractical eLearning Makeovers for Everyone
Practical eLearning Makeovers for Everyone
 
一比一原版马里兰大学毕业证(UMD毕业证书)如何办理
一比一原版马里兰大学毕业证(UMD毕业证书)如何办理一比一原版马里兰大学毕业证(UMD毕业证书)如何办理
一比一原版马里兰大学毕业证(UMD毕业证书)如何办理
 
一比一原版肯特大学毕业证UKC成绩单一模一样
一比一原版肯特大学毕业证UKC成绩单一模一样一比一原版肯特大学毕业证UKC成绩单一模一样
一比一原版肯特大学毕业证UKC成绩单一模一样
 
原版制作(MDIS毕业证书)新加坡管理发展学院毕业证学位证一模一样
原版制作(MDIS毕业证书)新加坡管理发展学院毕业证学位证一模一样原版制作(MDIS毕业证书)新加坡管理发展学院毕业证学位证一模一样
原版制作(MDIS毕业证书)新加坡管理发展学院毕业证学位证一模一样
 
LGBTQIA Pride Month presentation Template
LGBTQIA Pride Month presentation TemplateLGBTQIA Pride Month presentation Template
LGBTQIA Pride Month presentation Template
 
一比一原版(LaTrobe毕业证书)拉筹伯大学毕业证如何办理
一比一原版(LaTrobe毕业证书)拉筹伯大学毕业证如何办理一比一原版(LaTrobe毕业证书)拉筹伯大学毕业证如何办理
一比一原版(LaTrobe毕业证书)拉筹伯大学毕业证如何办理
 
NHL Stenden University of Applied Sciences Diploma Degree Transcript
NHL Stenden University of Applied Sciences Diploma Degree TranscriptNHL Stenden University of Applied Sciences Diploma Degree Transcript
NHL Stenden University of Applied Sciences Diploma Degree Transcript
 
一比一原版(soton毕业证书)英国南安普顿大学毕业证在读证明如何办理
一比一原版(soton毕业证书)英国南安普顿大学毕业证在读证明如何办理一比一原版(soton毕业证书)英国南安普顿大学毕业证在读证明如何办理
一比一原版(soton毕业证书)英国南安普顿大学毕业证在读证明如何办理
 
Divertidamente SLIDE.pptxufururururuhrurid8dj
Divertidamente SLIDE.pptxufururururuhrurid8djDivertidamente SLIDE.pptxufururururuhrurid8dj
Divertidamente SLIDE.pptxufururururuhrurid8dj
 
Heuristics Evaluation - How to Guide.pdf
Heuristics Evaluation - How to Guide.pdfHeuristics Evaluation - How to Guide.pdf
Heuristics Evaluation - How to Guide.pdf
 
Introduction to User experience design for beginner
Introduction to User experience design for beginnerIntroduction to User experience design for beginner
Introduction to User experience design for beginner
 
Best Digital Marketing Strategy Build Your Online Presence 2024.pptx
Best Digital Marketing Strategy Build  Your Online Presence 2024.pptxBest Digital Marketing Strategy Build  Your Online Presence 2024.pptx
Best Digital Marketing Strategy Build Your Online Presence 2024.pptx
 
一比一原版(Vancouver毕业证书)温哥华岛大学毕业证如何办理
一比一原版(Vancouver毕业证书)温哥华岛大学毕业证如何办理一比一原版(Vancouver毕业证书)温哥华岛大学毕业证如何办理
一比一原版(Vancouver毕业证书)温哥华岛大学毕业证如何办理
 
一比一原版南安普顿索伦特大学毕业证Southampton成绩单一模一样
一比一原版南安普顿索伦特大学毕业证Southampton成绩单一模一样一比一原版南安普顿索伦特大学毕业证Southampton成绩单一模一样
一比一原版南安普顿索伦特大学毕业证Southampton成绩单一模一样
 
定制美国西雅图城市大学毕业证学历证书原版一模一样
定制美国西雅图城市大学毕业证学历证书原版一模一样定制美国西雅图城市大学毕业证学历证书原版一模一样
定制美国西雅图城市大学毕业证学历证书原版一模一样
 
ADESGN3S_Case-Study-Municipal-Health-Center.pdf
ADESGN3S_Case-Study-Municipal-Health-Center.pdfADESGN3S_Case-Study-Municipal-Health-Center.pdf
ADESGN3S_Case-Study-Municipal-Health-Center.pdf
 
一比一原版(LSBU毕业证书)伦敦南岸大学毕业证如何办理
一比一原版(LSBU毕业证书)伦敦南岸大学毕业证如何办理一比一原版(LSBU毕业证书)伦敦南岸大学毕业证如何办理
一比一原版(LSBU毕业证书)伦敦南岸大学毕业证如何办理
 
International Upcycling Research Network advisory board meeting 4
International Upcycling Research Network advisory board meeting 4International Upcycling Research Network advisory board meeting 4
International Upcycling Research Network advisory board meeting 4
 
Getting Data Ready for Culture Hack by Neontribe
Getting Data Ready for Culture Hack by NeontribeGetting Data Ready for Culture Hack by Neontribe
Getting Data Ready for Culture Hack by Neontribe
 

Landing gear design

  • 1. LANDING GEAR DESIGN -to provide adequate clearance b/w prop.Tips n ground -to permit the plane to rotate on both taking off n landing so that wings AoA come close to the stalling angle of airfoil -the airfoil characteristics n Rn at landing n takeoff speed -adjustment of section values to those for wing’s AR n plan form -the effect on the stalling angle of flaps when extended. -the impact of ground effect - Nasa droop increases landing/takeoff angles
  • 2. Landing gear Fore –plane characteristics To estimate the landing/takeoff speed n angle -Section value adjustments -High lift devices –takeoffs r optional ;landings r unavoidable -Ground effect- -reduction in stall AoA n in induced drag
  • 3. NASA safe wing droop delays tip stalling n provides effective aileron in stall -Occupies 38% of semi span -Provides 4 degree more in takeoff/landing - longer landing gear increases tail angle that brings AoA attack above the stall for takeoffs/landings - reduce the tail angle to avoid the stall -Longer landing gear increases weight n drag
  • 4.
  • 5. Power loading -cid- cubic inch of engine displacement CG & Landing gear -CG shifts :combustion of fuel -types of LG- -tricycle-front wheel steerable -tail dragger-tail wheel steerable
  • 6. Landing gear dynamic Tricycle gear- -prevents nosing over -tail skid rests on the ground n CG shifts aft wheel axel then it will stay tail download -to prevent this LG shifted 5% of MAC aft CG -a very high thrust line n fuselage upsweep is needed to avoid long LG n prop. protection -crane -high tail moves wheel axel farther behind the CG requires heavy up –elevator deflection for takeoff Tail dragger – -disadvantages-nose over , liftoff prob.
  • 7. Detail design  To locate LG  Tricycle gear  Tail dragger Tread width -wheel tread is 25% of AR 6 span -Static load squat -Wheel diameter for paved runways 2 inch,grass-2.25 or 3
  • 8. Nose n tail wheel design - Main LG legs -should be continuous piece of metal from wheel to wheel so that bending loads do not hv to b absorbed by fuselage