Knowledge (XXG)

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.
73: 31: 88:(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 95:
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
107:, 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. 237: 325: 99:
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
1183: 1162: 1095: 991: 826: 692: 529: 345: 84:In an aircraft fuselage, stringers are attached to 239:Analysis and Design of Flight Vehicle Structures 319: 282:. 21 October 2015. p. 11. Archived from 53:The term is commonly used in connection with 8: 175:"Pilot's Handbook of Aeronautical Knowledge" 134:tanks, on both the first and second stages. 50:is a load-bearing component of a framework. 245:. Tri-State Offset Company. p. C11.29. 326: 312: 304: 142: 218: 207: 126:launch vehicle uses stringers in the 76:Longerons, struts and stringers in a 27:Load-bearing component of a framework 7: 265:. Conmilit Press LTD. p. 376. 25: 179:Federal Aviation Administration 1236:In-flight entertainment system 933:Horizontal situation indicator 1: 1216:Environmental control system 1298: 893:Course deviation indicator 584:Electro-hydraulic actuator 259:Airframe Structural Design 256:Michael C. Y. Niu (1988). 1124:Conventional landing gear 122:tanks. For example, the 908:Flight management system 1211:Emergency oxygen system 973:Turn and slip indicator 768:Leading-edge droop flap 738:Drag-reducing aerospike 713:Adaptive compliant wing 708:Active Aeroelastic Wing 80:type fuselage structure 1282:Mechanical engineering 1251:Passenger service unit 1052:Self-sealing fuel tank 948:Multi-function display 217:Cite journal requires 130:tanks, but not in the 81: 35: 1231:Ice protection system 1149:Tricycle landing gear 1139:Landing gear extender 356:Aft pressure bulkhead 111:Space launch vehicles 75: 33: 1196:Auxiliary power unit 604:Flight control modes 236:Bruhn, E. F (1973). 1277:Aircraft components 1175:Escape crew capsule 1082:War emergency power 953:Pitot–static system 798:Variable-sweep wing 506:Vertical stabilizer 155:The Free Dictionary 883:Attitude indicator 863:Airspeed indicator 858:Aircraft periscope 82: 55:aircraft fuselages 36: 1264: 1263: 1191:Aircraft lavatory 928:Heading indicator 873:Annunciator panel 853:Air data computer 763:Leading-edge cuff 181:. 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431:Leading edge 401:Flying wires 361:Cabane strut 291:. Retrieved 284:the original 271: 258: 251: 238: 231: 210:cite journal 200:V, Vignesh. 195: 183:. Retrieved 169: 158:. Retrieved 154: 145: 114: 98: 94: 83: 52: 47: 43: 37: 1154:Tundra tire 1037:Intake ramp 968:Transponder 753:Gurney flap 694:Aerodynamic 609:Fly-by-wire 491:Triple tail 40:engineering 1271:Categories 1144:Oleo strut 1032:Inlet cone 1027:Gascolator 993:Propulsion 983:Yaw string 978:Variometer 834:instrument 813:Wing fence 748:Gouge flap 723:Blown flap 679:Yaw damper 654:Stabilator 639:Side-stick 574:Dive brake 461:Stabilizer 436:Lift strut 426:Jury strut 293:29 January 185:16 January 160:2018-05-15 151:"Longeron" 138:References 120:propellant 59:automobile 1119:Autobrake 1047:NACA duct 1022:Fuel tank 1012:Drop tank 995:controls, 878:Astrodome 868:Altimeter 733:Dog-tooth 698:high-lift 649:Spoileron 634:Servo tab 614:Gust lock 569:Deceleron 554:Autopilot 511:Wing root 496:Twin tail 481:Tailplane 416:Hardpoint 386:Empennage 349:structure 18:Longerons 1087:Wet wing 1062:Throttle 808:Vortilon 669:Trim tab 599:Flaperon 589:Elevator 544:Airbrake 516:Wing tip 441:Longeron 411:Fuselage 347:Airframe 335:Aircraft 124:Falcon 9 68:Aircraft 48:stringer 44:longeron 1097:Landing 888:Compass 836:systems 828:Avionic 818:Winglet 701:devices 644:Spoiler 539:Aileron 521:Wingbox 446:Nacelle 396:Fairing 339:systems 86:formers 62:chassis 832:flight 793:Strake 624:Rudder 594:Elevon 559:Canard 501:V-tail 476:T-tail 406:Former 366:Canopy 1017:FADEC 903:EICAS 778:Slats 619:HOTAS 471:Strut 287:(PDF) 280:(PDF) 263:(PDF) 243:(PDF) 78:truss 1099:and 963:TCAS 943:ISIS 898:EFIS 843:ACAS 830:and 783:Slot 743:Flap 696:and 684:Yoke 456:Spar 381:Dope 295:2016 223:help 187:2023 105:skin 101:ribs 90:ribs 57:and 42:, a 938:INS 918:GPS 773:LEX 451:Rib 46:or 38:In 1273:: 214:: 212:}} 208:{{ 177:. 153:. 327:e 320:t 313:v 297:. 225:) 221:( 204:. 189:. 163:. 20:)

Index

Longerons

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

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