content_image/549038.jpg content_image/549039.jpg
<img src='content_image/549038.jpg'>

## Turn Coordinator 

The gimbal in the turn coordinator is canted; therefore, its gyro can sense both rate of roll and rate of turn. Since turn coordinators are more prevalent in training aircraft, this discussion concentrates on that instrument. When rolling into or out of a turn, the miniature aircraft banks in the direction the aircraft is rolled. A rapid roll rate causes the miniature aircraft to bank more steeply than a slow roll rate. 

The turn coordinator can be used to establish and maintain a standard-rate turn by aligning the wing of the miniature 

aircraft with the turn index. Figure 8-22 shows a picture of a turn coordinator. There are two marks on each side (left and right) of the face of the instrument. The first mark is used to reference a wings level zero rate of turn. The second mark on the left and right side of the instrument serve to indicate a standard rate of turn. A standard-rate turn is defined as a turn rate of 3° per second. The turn coordinator indicates only the rate and direction of turn; it does not display a specific angle of bank. 

<img src='content_image/549039.jpg'>

