Hello, landlord, you must be a flying enthusiast. The first problem is that the joystick of the plane turns to one side, and the plane is flying sideways at this time. Because the aerodynamic balance is broken (the plane usually descends a little), the plane slides in that direction (the force when the tail is tilted should also be considered). The specific force analysis is too complicated, and my knowledge of aerodynamics is limited, which can't be satisfactorily explained. I seldom use vertical tail when flying simulated flight. I rely on aileron, and landing is no exception. I mainly fly Il -2 (without buying a pole). Secondly, the turning sideslip instrument is actually composed of two instruments. One is a turning instrument and the other is a sideslip instrument. The turning instrument is used to indicate the turning direction of the aircraft and can roughly indicate the turning angular velocity. The common turning instrument measures the turning direction and speed of an aircraft by using the precession of a two-degree-of-freedom gyro. In fact, it measures the rotation of the plane around the vertical axis. There is a special instrument for measuring it on the plane, that is, the rollover instrument. However, it is not an independent instrument, but is combined with a sideslip instrument, which is called a turning sideslip instrument. The sideslip meter is used to indicate the direction and degree of sideslip. Because the turning sideslip instrument has a pointer and a sideslip ball, pilots often call it a "needle ball instrument". The disk surface of a typical turning sideslip instrument (also called turntable) is shown in the following figure. The pointer and dial in the picture belong to the steering instrument, and the ball and glass tube belong to the sideslip instrument. The dial of the tachometer is divided into left and right squares, and the largest scale is marked with the word "45". When the rotational angular velocity is zero, the pointer is vertically upward and points to the center of the scale; When the plane turns, the pointer deflects in the turning direction. The dial is also engraved with the words "500 km/h", indicating that when the plane makes a coordinated turn at a vacuum speed of 500 km/h, the scale value pointed by the pointer is the slope of the plane at that time. The so-called coordinated turn is a turn without sideslip, that is, the plane makes a uniform circular motion in the horizontal plane. For example, when the plane makes a coordinated turn to the right at a vacuum speed of 500 km/h, and the pointer is just on the scale of 45 to the right, it means that the plane leans 45 to the right (that is, the right slope). At this time, the turning angular velocity value is 4/s, and the structure of the sideslip tester is very simple, that is, a small black ball is placed in a curved glass tube with liquid in it for damping. In flight, when the ball stops in the center, it means there is no side slip; The ball is to the left, indicating that there is a left slip, and the direction of flight airflow comes from the left; The ball is right, which means there is a right slip. The more the ball deviates from the center, the more serious the sideslip is, or the greater the sideslip angle is. Because there is no numerical scale, the numerical value of sideslip angle cannot be expressed specifically, but only the degree of sideslip. In order to keep the plane from slipping, just keep the ball in the center.

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