Theoretical Basis of UAV Flight Control
Release time:
2022-11-09 10:03
Drone balance:
The forces acting on the aircraft must be just balanced, that is, the resultant force is zero. According to Newton's second law, if the resultant force is not 0, the aircraft will accelerate.
For convenience, all the forces on the aircraft are decomposed into the three axial forces of X, Y, and Z, and all the bending moments on the aircraft are decomposed into the bending moments around the three axes of X, Y, and Z.
If the bending moment is unbalanced, rotation will occur. Here, X, Y, and Z can be redefined. If the X-axis bending moment is unbalanced, the aircraft will roll, if the Y-axis bending moment is unbalanced, the aircraft will pitch, and if the Z-axis bending moment is unbalanced, the aircraft will roll. Balance the plane and it will yaw.
Application of Bernoulli's law to fixed-wing aircraft:
Briefly, the greater the flow velocity of the air, the smaller the pressure on the wing. On the contrary, the smaller the velocity, the greater the pressure. The structure of the wing makes the air flow faster on the upper part of the wing and the pressure is smaller. The lower part of the wing The air is moving more slowly, and the pressure is higher, so the wing is pushed up
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