Primary Control Of Aircraft | Aircraft Controls | Control Of Aircraft | Lecture 42 — Transcript

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1. 0:00this lesson will cover the basic flying
2. 0:02controls
3. 0:03their location on the aircraft their
4. 0:05operation and primary effects
5. 0:07and the various methods available to
6. 0:09designers for making control of the
7. 0:11aircraft easier
8. 0:12and safer for the pilots and ultimately
9. 0:15of course
10. 0:16safer and more comfortable for the
11. 0:17passengers
12. 0:19variations on the basic configurations
13. 0:22will be covered in a subsequent lesson
14. 0:25the basic method of changing the
15. 0:26attitude of an aircraft
16. 0:28that is its position relative to the
17. 0:30horizon
18. 0:31is by temporarily changing the camber of
19. 0:33the airfoil of the wing
20. 0:35tail plane or thin which will alter the
21. 0:37lift it produces
22. 0:40the diagram shows the change in lift
23. 0:42with changes in control surface position
24. 0:45the overall effect of a control movement
25. 0:47will also depend on speed
26. 0:53an aircraft needs to be controllable
27. 0:55about each of its three axes which pass
28. 0:58through the center of gravity
29. 0:59or cg which is conventionally portrayed
30. 1:02by a circle with
31. 1:03alternate black and white quarters
32. 1:06basic controls will consist of flap type
33. 1:08sections incorporated into the trailing
34. 1:10edges of the main flying surfaces
35. 1:12and positioned at the extremities
36. 1:14furthest from the cg
37. 1:16to give the greatest control movement
38. 1:19one axis runs vertically through the
39. 1:21centre of gravity
40. 1:24this is the normal axis movement about
41. 1:26which
42. 1:27is controlled by the rudder the vertical
43. 1:29control surface
44. 1:30attached to the fin the movement around
45. 1:33the normal axis
46. 1:34is called your and can be termed
47. 1:36directional control
48. 1:38it is worth noting however that the
49. 1:40rudder is not used to change direction
50. 1:42by yawing the aircraft
51. 1:43but rather for preventing your both in
52. 1:46normal and asymmetric flight
53. 1:49this will be covered in more detail in a
54. 1:51later lesson
55. 1:54the lateral axis passes through the cg
56. 1:56running parallel to a line passing
57. 1:58through the wingtips
58. 2:01and movement around this axis is called
59. 2:03pitch
60. 2:04the control surfaces are the elevators
61. 2:07which move up and down together to give
62. 2:09longitudinal control
63. 2:10and are mounted on the trailing edge of
64. 2:12the tail plane
65. 2:15the third axis is the longitudinal axis
66. 2:18which runs from nose to tail through the
67. 2:20cg movement around this axis
68. 2:23is called roll and is provided by the
69. 2:27ailerons
70. 2:28which are mounted at or near the wing
71. 2:30tips
72. 2:31they move in opposition the down going
73. 2:33aileron increases the lift on that wing
74. 2:36and the up going one decreases lift on
75. 2:38the other
76. 2:39giving lateral control these are the
77. 2:42conventional three axis basic control
78. 2:44surfaces
79. 2:46in the following lesson we shall look at
80. 2:48variations on the basic types of control
81. 2:56surfaces