New Heat Exchanger for Arctic Helicopters Featured at HeliRussia-2019

Rubric: Russia, Industry

At the HeliRussia-2019 exhibition, the Russian research company NPO Nauka presented the model of a new air/oil heat exchanger designed for one of Kamov's advanced helicopters. By a mechanical valve, it maintains optimal oil inlet temperature for engine or transmission.

The designers tried to address the issue of helicopters operation in severe climatic conditions of the far north and hot regions.

Model of the air/oil heat exchanger with external valve unit designed by NPO Nauka

The frosty air at the inlet of a conventional heat exchanger, where the flow always passes the matrix, can result in the oil temperature too low for the helicopter takeoff. This is why, in the Arctic, helicopters need long warm-up, a representative of NPO Nauka told Mil.Press Today at the company’s pavilion.

The new heat exchanger features the mechanical bypass valve in the cover. Depending on the flow temperature, it directs the oil either through the heat-exchanging matrix or, without cooling, directly through the valve unit, or separates the oil: one part flows to the matrix, another one goes directly. This helps to avoid oil temperature problems when changing of climate conditions of the helicopter operations.

The heat exchanger’s model has already passed vibration tests and was cut to check the manufacturing quality. After that, the heat exchanger tailored for JSC Kavov was shown at the exhibition.

The 3-day long helicopter-related industrial exhibition HeliRussia-2019 started in Moscow on May 16.