There are helicopters on both wheeled and skid-mounted chassis. We observe the former mainly on Russian cars, and the latter on Western ones. Both options have certain advantages, and each country has its own reasons for creating exactly the models that it produces.
Runners have a number of advantages. First of all, they weigh less, are cheaper, require almost no maintenance and in some situations are able to withstand a fairly rough landing, distributing the weight of the machine evenly across the entire width of the runners.
As for helicopters made in Russia, almost all of them have wheels. In the case of a wheeled chassis, the main advantage is that the vehicle can take off from a run. At this time, an additional lifting force is formed, and the load on the engine with the propeller is significantly reduced.
Landing a vehicle equipped with a wheeled chassis is also somewhat easier. In this case, you can descend at a horizontal speed, without fear that the helicopter will skid and it will become uncontrollable, unlike machines on skids. In the second case, this happens due to the fact that today there are no brakes for these "skis".
In addition, the wheels make it possible for this air transport to independently get to the parking lot at the airport.
In America, starting in the fifties, helicopters began to be mass-produced. In this regard, we have created the appropriate infrastructure, namely, special helipads.
As for the Soviet Union, traditionally, the helicopters were based on conventional airfields. Accordingly, they should have been able to move on their own.
There are a lot of light helicopters in the USA for which runners are optimal. Even in small towns they are used as air taxis. They are also involved in the fire and police services, in the ambulance, in the work of the media.
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In the USSR, and then in the Russian Federation, the main customer of these machines is the state, and it needs lifting equipment based on a wheeled chassis. By the way, in the United States, all heavy vehicles, without exception, are based on a wheeled chassis.
Continuing the topic, read about Homer: the world's most lifting helicopter and a triumph for Soviet engineering.
A source: https://novate.ru/blogs/210121/57534/
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