07-04-2012, 12:16 PM
Aircraft Structures And Flight Controls
AVIA122_Ch13.ppt (Size: 4.56 MB / Downloads: 130)
Aircraft Structures
Truss-type Structures
Had struts and wire-braced wings
Occupants sat in open cockpits
Cockpits fabric-covered
Stressed-skin Structures
All of the structural loads are carried by the skin.
Thin wood skin
Or aluminum-alloy sheets
Structural Loads/Stress
Deformation
Nonpermanent Deformation
Deformation disappears when the load is removed.
Permanent Deformation
Wrinkles observed on top of wing and bottom of horizontal stabilizer.
Stretch marks on the bottom of the wing or top o the stabilizer. (positive g’s)
Fuselage Construction
Truss Fuselage construction
Pratt truss
Warren truss
Stressed-skin Structure
Monocoque
Semi - Monocoque
Pressurized Structure
Leading Edge Devices
Delays the the airflow separation caused by a stall to a higher angle of attack.
Increases the energy of the air flowing over the surface.