Pöörlemissoonus

Pöörlemissoonus, also known as rotational noise or whine, is a type of noise that occurs when a rotating object, such as a wheel, fan, or motor, vibrates at a frequency that is audible to the human ear. This phenomenon is often characterized by a high-pitched, continuous sound that can be bothersome or even painful to those who hear it.

The primary cause of pöörlemissoonus is mechanical imbalance. When the center of mass of a rotating object does not coincide with its axis of rotation, it creates a force that causes the object to vibrate. This vibration is transmitted to the surrounding air, resulting in the characteristic whining sound. Other factors that can contribute to pöörlemissoonus include bearing wear, misalignment, and resonance.

Pöörlemissoonus can be a significant issue in various industries, including automotive, aerospace, and manufacturing. In the automotive sector, for example, it can be a common problem in vehicles with rotating components such as wheels, fans, and belts. In aerospace, it can affect the performance and safety of aircraft engines and propellers.

The diagnosis of pöörlemissoonus typically involves the use of specialized equipment, such as accelerometers and spectrum analyzers, to measure the vibration and noise levels of the rotating object. Once identified, the issue can often be resolved through mechanical balancing, bearing replacement, or alignment adjustments. In some cases, more extensive repairs or redesigns may be necessary to eliminate the problem completely.