Aircraft Structures. Truss-type StructuresHad struts and wire-braced wingsOccupants sat in open cockpitsCockpits fabric-coveredStressed-skin StructuresAll of the structural loads are carried by the skin.Thin wood skinOr aluminum-alloy sheets. Aircraft Structures. MonocoqueVirtually no internal frameworkSemi-monocoqueInternal arrangement of formers and stringers is used to provide additional rigidity and strength to the skin..
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1. Aircraft Structures And Flight Controls
3. Aircraft Structures Monocoque
Virtually no internal framework
Internal arrangement of formers and stringers is used to provide additional rigidity and strength to the skin.
5. Airframe Units: Fuselage
Flight control surfaces
6. Airframe Units:
7. Structural Loads/Stress Five Types Of Stress
9. Structural Loads/Stress
11. Structural Loads/Stress Deformation
Deformation disappears when the load is removed.
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)
12. Materials For Aircraft Construction Wood
13. Materials For Aircraft Construction
15. Structures Wing Construction Truss-type
16. Structures Stressed-skin Wing Construction
17. Cantilever Wing
18. Control Surface Construction
19. Control Surface Construction Control Surface Flutter
Control Surface must be mass balanced so that their center of gravity does not fall behind their hinge line.
20. Fuselage Construction Truss Fuselage construction
Semi - Monocoque
21. Flight Controls
22. Flight Controls
23. Pitch Control Elevators
Sole function is to change the angle of attack of the airplane, which alters its speed, lift and drag.
24. Pitch Control
25. Pitch Control Stabilator
Provides both longitudinal and directional stabilization and control.
26. Lateral Or Roll Control Ailerons
Rolling action produced is the primary method of lateral control on most aircraft.
27. Lateral Or Roll Control
28. Directional Control Adverse aileron yaw
The aileron that moves downward creates lift and induced drag.
Induced drag pulls the nose of the airplane around in the direction opposite the way the airplane should turn.
29. Directional Control Rudder
Rotates the airplane about its vertical axis (Yawing)
Also provides a form of roll control because the application of rudder causes yaw which will induce a roll.
30. Directional Control
31. Trim Controls
32. Trim Controls Trim Tabs
33. Trim Tabs
34. Balance Tab
35. Anti-Servo Tab
36. Servo Tab Used on large aircraft when the control forces are too great for the pilot to manually move.
Flight control column moves the tab on the control surface and this aerodynamically moves the main control surface.
37. Adjustable Stabilizer
38. Fixed Trim Tab
39. Aerodynamically Balanced Control Surface
Overhang deflects to the opposite side of the fuselage from the main rudder surface to produce an aerodynamic force that aids the pilot.
40. Stall Strip and Vortex Generators
41. Auxiliary Lift Devices
42. Flaps Change the camber of the wing and increase both its lift and drag for and given angle of attack
Moved by cables form an electric motor driven jackscrew.
44. 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.
45. Fixed Slot
46. Movable Slat