What Causes Excessive Vibration in Russian Ka-52 Helicopter?

Russian Ka-52 Alligator a̫t̫t̫a̫c̫k̫ helicopter reportedly suffering from serious structural deficiencies, due to exposure to significant vibratory load levels originating from coaxial rotor system.

Russian Ka-52 helicopter suffers excessive vibration

In intensive operation conditions, Ka-52’s coaxial rotor system with stub wings creates high vibrations.

The real operating experience in the conditions of the ωαɾ in Ukraine confirmed that the Ka-52 helicopter is prone to excessive vibrations that lead to mechanical failures and vibration-induced fatigue.

Russian Ka-52 helicopter suffers excessive vibration

Photos and videos that have appeared on social media show a range of different damage to Ka-52 helicopters caused by excessive body vibration during takeoff or landing. Russian c̫o̫m̫b̫a̫t̫ helicopters are losing their landing gear fairings, and have cracks in the wings on which the main armament is suspended.

Severe imbalance in the rotating parts of Ka-52 leads to instabilities during flight making control difficult, if not impossible. Severe vibration can also affect avionics and navigation equipment.

Russian Ka-52 helicopter suffers excessive vibration

In addition, one important issue is the degradation of instrument reading, which is a result of complex human-machine interaction. The Ukrainian military has already shot down several Russian a̫t̫t̫a̫c̫k̫ helicopters from man-portable anti-tank missile systems at the moment when the crew was experiencing excessive vibration and could not keep track of the situation around.

According to TASS, the Ka-52 Alligator reconnaissance/a̫t̫t̫a̫c̫k̫ helicopter is designed to destroy tanks, armored and non-armored vehicles, manpower, rotorcraft and other enemy aircraft on the frontline and in the tactical depth, in any weather conditions and at any time. The helicopter is furnished with modern avionics while its coaxial rotor system and enhanced longitudinal control enable it to effectively maneuver and perform complex aerobatic operations.

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