Knowledge

Longeron

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longeron system also requires that the fuselage frames be closely spaced (about every 4 to 6 in or 10 to 15 cm). If the longitudinal members are numerous (usually 50 to 100) and are placed just between two formers/frames, then they are called "stringers". In the stringer system the longitudinal members are smaller and the frames are spaced farther apart (about 15 to 20 in or 38 to 51 cm). Generally, longerons are of larger cross-section when compared to stringers. On large modern aircraft the stringer system is more common because it is more weight-efficient, despite being more complex to construct and analyze. Some aircraft use a combination of both stringers and longerons.
62: 20: 77:(also called frames) and run in the longitudinal direction of the aircraft. They are primarily responsible for transferring the aerodynamic loads acting on the skin onto the frames and formers. In the wings or horizontal stabilizer, longerons run spanwise (from wing root to wing tip) and attach between the 84:
Sometimes the terms "longeron" and "stringer" are used interchangeably. Historically, though, there is a subtle difference between the two terms. If the longitudinal members in a fuselage are few in number (usually 4 to 8) and run all along the fuselage length, then they are called "longerons". The
96:, where they carry a portion of the fuselage bending moment through axial loading. It is not uncommon to have a mixture of longerons and stringers in the same major structural component. 226: 88:
Longerons often carry larger loads than stringers and also help to transfer skin loads to internal structure. Longerons nearly always attach to frames or
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Interior of a Boeing/Stearman PT-17 showing small channel section stringers
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Stringers are also used in the construction of some
322: 73:In an aircraft fuselage, stringers are attached to 244: 1257: 228:Analysis and Design of Flight Vehicle Structures 258: 308: 271:. 21 October 2015. p. 11. Archived from 42:The term is commonly used in connection with 164:"Pilot's Handbook of Aeronautical Knowledge" 123:tanks, on both the first and second stages. 39:is a load-bearing component of a framework. 234:. Tri-State Offset Company. p. C11.29. 224: 315: 301: 99: 60: 18: 132: 1258: 296: 115:launch vehicle uses stringers in the 65:Longerons, struts and stringers in a 16:Load-bearing component of a framework 156: 13: 254:. Conmilit Press LTD. p. 376. 14: 1282: 168:Federal Aviation Administration 1225:In-flight entertainment system 922:Horizontal situation indicator 238: 218: 182: 1: 188: 126: 1205:Environmental control system 7: 56: 10: 1287: 882:Course deviation indicator 573:Electro-hydraulic actuator 248:Airframe Structural Design 245:Michael C. Y. Niu (1988). 1172: 1151: 1113:Conventional landing gear 1084: 980: 815: 681: 518: 334: 111:tanks. For example, the 897:Flight management system 1200:Emergency oxygen system 962:Turn and slip indicator 757:Leading-edge droop flap 727:Drag-reducing aerospike 702:Adaptive compliant wing 697:Active Aeroelastic Wing 69:type fuselage structure 1271:Mechanical engineering 1240:Passenger service unit 1041:Self-sealing fuel tank 937:Multi-function display 206:Cite journal requires 119:tanks, but not in the 70: 24: 1220:Ice protection system 1138:Tricycle landing gear 1128:Landing gear extender 345:Aft pressure bulkhead 100:Space launch vehicles 64: 22: 1185:Auxiliary power unit 593:Flight control modes 225:Bruhn, E. F (1973). 1266:Aircraft components 1164:Escape crew capsule 1071:War emergency power 942:Pitot–static system 787:Variable-sweep wing 495:Vertical stabilizer 144:The Free Dictionary 872:Attitude indicator 852:Airspeed indicator 847:Aircraft periscope 71: 44:aircraft fuselages 25: 1253: 1252: 1180:Aircraft lavatory 917:Heading indicator 862:Annunciator panel 842:Air data computer 752:Leading-edge cuff 170:. 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Retrieved 273:the original 260: 247: 240: 227: 220: 199:cite journal 189:V, Vignesh. 184: 172:. Retrieved 158: 147:. Retrieved 143: 134: 103: 87: 83: 72: 41: 36: 32: 26: 1143:Tundra tire 1026:Intake ramp 957:Transponder 742:Gurney flap 683:Aerodynamic 598:Fly-by-wire 480:Triple tail 29:engineering 1260:Categories 1133:Oleo strut 1021:Inlet cone 1016:Gascolator 982:Propulsion 972:Yaw string 967:Variometer 823:instrument 802:Wing fence 737:Gouge flap 712:Blown flap 668:Yaw damper 643:Stabilator 628:Side-stick 563:Dive brake 450:Stabilizer 425:Lift strut 415:Jury strut 282:29 January 174:16 January 149:2018-05-15 140:"Longeron" 127:References 109:propellant 48:automobile 1108:Autobrake 1036:NACA duct 1011:Fuel tank 1001:Drop tank 984:controls, 867:Astrodome 857:Altimeter 722:Dog-tooth 687:high-lift 638:Spoileron 623:Servo tab 603:Gust lock 558:Deceleron 543:Autopilot 500:Wing root 485:Twin tail 470:Tailplane 405:Hardpoint 375:Empennage 338:structure 1076:Wet wing 1051:Throttle 797:Vortilon 658:Trim tab 588:Flaperon 578:Elevator 533:Airbrake 505:Wing tip 430:Longeron 400:Fuselage 336:Airframe 324:Aircraft 113:Falcon 9 57:Aircraft 37:stringer 33:longeron 1086:Landing 877:Compass 825:systems 817:Avionic 807:Winglet 690:devices 633:Spoiler 528:Aileron 510:Wingbox 435:Nacelle 385:Fairing 328:systems 75:formers 51:chassis 821:flight 782:Strake 613:Rudder 583:Elevon 548:Canard 490:V-tail 465:T-tail 395:Former 355:Canopy 1006:FADEC 892:EICAS 767:Slats 608:HOTAS 460:Strut 276:(PDF) 269:(PDF) 252:(PDF) 232:(PDF) 67:truss 1088:and 952:TCAS 932:ISIS 887:EFIS 832:ACAS 819:and 772:Slot 732:Flap 685:and 673:Yoke 445:Spar 370:Dope 284:2016 212:help 176:2023 94:skin 90:ribs 79:ribs 46:and 31:, a 927:INS 907:GPS 762:LEX 440:Rib 35:or 27:In 1262:: 203:: 201:}} 197:{{ 166:. 142:. 316:e 309:t 302:v 286:. 214:) 210:( 193:. 178:. 152:.

Index


engineering
aircraft fuselages
automobile
chassis

truss
formers
ribs
ribs
skin
launch vehicle
propellant
Falcon 9
kerosene (RP-1)
liquid oxygen
"Longeron"
"Pilot's Handbook of Aeronautical Knowledge"
Federal Aviation Administration
"Reconnaisance [sic] aircraft design project"
cite journal
help
Analysis and Design of Flight Vehicle Structures
Airframe Structural Design
"Falcon 9 Launch Vehicle Payload User's Guide, Rev 2"
the original
v
t
e
Aircraft

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