Aircraft-assembly-and-Rigging.ppt - CHAPTER 1 Aircraft...

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CHAPTER 1 Aircraft Structural Assembly and Rigging * Section A Aircraft Design and Construction * Section B Airplane Assembly and Rigging * Section C Fundamentals of Rotary-Wing Aircraft
A-Structural Designs B-Types Of Aircraft Structures b-1 Airfoil Sections b-2 Transmitting Lift Into The Structure 1 - Truss-Type Wing Construction 2 - Stressed-Skin Wing Construction 3 - Control Surface Construction a-Fabric-Covered Control Surfaces b-Metal-Covered Control Surfaces C-Airfoil Control And Aerodynamic Configurations 1 - Ailerons 2 - Spoilers 3 - Flaperons And Elevons 4 - Winglets 5 - Vortex Generators 6 - Empennage Structures 7 - Fuselage Structures a-Truss-Type Fuselage b-Stressed-Skin Fuselage 1 - Monocoque Fuselage 2 - Semi-Monocoque Fuselage c-Pressurized Fuselage 6 - Landing Gear a-Water Operations b-Snow Operations D-Power plant Support Structures 1 - Piston Engines 2 - Turbine Engines 3 - Engine Mounts 4 - Access And Inspection
Assembly : joining of various components and structures that form an entire aircraft Rigging : positioning and alignment of an aircraft s major sub-assemblies to produce a synergistic design
Types of structure
WRIGHT FLYER WRIGHT FLYER DECEMBER 17 1903 DECEMBER 17 1903 12 12 SECS SECS . .
TRUSS STRUCTURE - that used struts and wire-braced wings. The occupants sat in open cockpits within a fabric- covered hull, or fuselage . - Almost all of these airplanes had the engine installed up front and auxiliary surfaces mounted aft of the wings to form the tail, or empennage , of the airplane .
Truss –type fuselage construction To minimize wind resistance and yet retain the strength provided by a truss structure,designers constructed a superstructure of wooden formers and stringers over the framework to produce a more streamlined shape . Formers provide the contoured cross-sectional shape to a structure while stringers run the length between the formers to fill in the shape .
Truss –type fuselage construction Truss: is a form of construction in which a number of members are joined to form a rigid structure Divided into 1 . Pratt truss : in which wooden Longerons : served as the main longitudinal structure member Wood strut : supported and held the longerons a part…struts only carry compressive loads…while stays only carry tensile loads Two piano wires : stays crossed each pay or space between struts * members carry only tensile loads . A Pratt truss is used for most fabric-covered fuselage 2 . Warren truss : built of welded steel tubing Longerons : served as the main longitudinal structure member Longeron separated by diagonal members that can carry both compressive and tensile loads * The smooth aerodynamic shape required by an airplane fuselage is provided using both Pratt and warren trusses by the addition of a non-load-carrying superstructure ,and entire fuselage covered with cloth fabric
* The warren truss features longerons separated by diagonal members that carry both compressive and tensile loads
STRESSED-SKIN STRUCTURE The next advance in structural designs came with the development of a construction technique that allowed the aircraft to be formed without a truss frame. This design, generally known as a stressed-skin structure .

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