1 / 26

aircraft structures and flight controls

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..

Faraday
Download Presentation

aircraft structures and flight controls

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

    1. Aircraft Structures And Flight Controls

    3. Aircraft Structures Monocoque Virtually no internal framework Semi-monocoque Internal arrangement of formers and stringers is used to provide additional rigidity and strength to the skin.

    4. Semi-monocoque

    5. Airframe Units: Fuselage Wings Stabilizers Flight control surfaces Landing gear

    6. Airframe Units:

    7. Structural Loads/Stress Five Types Of Stress Tension Compression Bending force Torsion Shear force

    9. Structural Loads/Stress

    11. 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)

    12. Materials For Aircraft Construction Wood Aluminum Alloys Honeycomb Magnesium Stainless Steel

    13. Materials For Aircraft Construction

    14. Structures

    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 Pratt truss Warren truss Stressed-skin Structure Monocoque Semi - Monocoque Pressurized Structure

    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 All-movable tail Anti-servo tab Ruddervators 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 Balance Tab Anti-Servo Tab Servo Tab Spring Tab Adjustable Stabilizer

    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.

    43. Flaps

    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

More Related