Ka-118. A photo. History. Characteristics.
To create a light multipurpose helicopter Ka-118 took a lot of time and work of designers. For the Kamov design bureau Ka-118 was the first machine without a tail rotor. To create this unit, it had to do a lot of theoretical work and spend a lot of experimental studies both on the ground and in flight. Instead, the tail rotor, this machine was equipped with fenestron jet type, which should compensate for the reactive torque of the single-rotor design. For studies of this design used in flight Ka-26SS. He was equipped with a new prototype of the beam, which had a jet system with horizontal and vertical tail surfaces.
Plans for designers and customers Ka-118
Since Ka and Mi-26-2 for the period of their use have won large market customers and a huge range of applications, they have great authority, but at the same time requires a lot of improvements. For these reasons, designers began to develop such a helicopter, but with better qualities, it became a Ka-118. After monitoring the helicopter market the previous machines, it became clear that most of the models of helicopters Mi and Ka-2-26 work out your entire life to flying 2000-2005 year. All these factors indicate the need for delivery to the helicopter market new and improved helicopter that can perform multiple tasks.
Excerpts from the newspaper:
Release Ka-118 2000 planned for the year. The new device was duly replaced the old similar models, as well as to become a worthy competitor to foreign cars, such as MDC and in-108.
The main feature of the design and innovation of the aircraft is that the tail boom is equipped with a gas-dynamic channel, which has not been in any previous machine of this type. At the beginning of the air inlet tract is installed with a fan, and at the end of a nozzle which can be controlled by air flow. All along the tail boom located slit through which air is also supplied from the fan. Through all of this on the tail boom, an additional lateral force, which aims to compensate for the reactive moment. Due to this structure, able to create a desired lateral force at low cost power.
When using the steering system of this type of helicopter will be significantly higher performance characteristics and less drag in flight. Also, this design saves fuel and increases the transport performance of the machine. This tail can increase agility and reduce the load on the main screw machine. Using only one rotor will reduce the noise and vibration within the helicopter. But the most important thing is that Ka-118 has a high flight safety, even at low altitude.
Appearance Ka-118 substantially the same as that of its neighbors. Basic systems fuselage, powerplant and chassis remain unchanged and are similar to those single-engine helicopters. The main changes and innovations affected only the tail of the car.
The main advantage of helicopters without a tail rotor is a drag reduction during flight and as a consequence, increase airspeed. Furthermore, such a design of the device reduces the vibration of the whole structure of the helicopter. When injected into the swirl air flow keeps the magnificent helicopter flight characteristics and provides excellent control. Under these conditions, the car will not break down and will provide a high flight safety.
Since Ka-118 has only one screw, and the power plant is different from the helicopter with two screws. It consists of a main gearbox and motor which are connected to the transmission shaft. Also, the power plant is equipped with a fan, which is powered by the gearbox. The power plant includes two engines, model PW-206A, which have a capacity of 630 horsepower each. The fan creates a pressure that is directed to the rear of the nozzle and controlled through a special channel in the tail boom. The tail part of the machine consists of a V-tail, which provides control and of a fixed stabilizer apparatus.
In the manufacture of Ka-118 it was used a lot of composite materials, which reduced the overall weight of the machine. Of these, made rotor Ka-118, as well as the construction of housing and flights. These materials are used for the equipment of the cockpit and landing gear.
The device of this design can be used as well as other similar types of helicopters with tail rotor. With Ka-118 can carry freight and passengers, in addition, it is great for search and rescue operations. This machine has found application in patrolling forests, roads and medical care.
Compared with the previous Ka-118 should increase the intensity of operations especially in remote and inaccessible areas, like over land and over water bodies. It was also planned to increase the intensity of cargo and passengers, depending on the development of market relations. Due to this anticipated increase in administrative tasks for helicopters, as well as wider use in the protection of the environment, sports and tourism.
All the companies that have used these helicopters, unanimously declared that the new car should be equipped with two engines. They can continue flying even when the failure of one of them and, as a consequence, it increases the safety of the flight. An important criterion for the use of machines is economical and the time of her life. Ka-118 could afford to cut prices on flights and still be profitable carrier. The design of the helicopter allows quick replacement and repair of the main units and mechanisms.
When designing a Ka-118 great attention has been paid to the comfort of passengers during the flight. There have also been reduced by the effects of noise and vibration inside the cabin, this was achieved by well-thought-out design of the rotor and due to the lack of the tail rotor. In addition, the power plant compartment separated from the passenger cabin more partition.
Service helicopter most systems can be made through large hatches on the ground. On this machine worked out a lot of management options, one of them is zhestkotorsovy. It is also planned to use the English wiring, which will reduce the weight of the whole management system and material costs of operation.
Helicopter operates one pilot and cabin machines designed to carry five passengers. Place the pilot located in the center of the machine, which allows to increase visibility when piloting. Furthermore, this arrangement allows the pilot uniformly away weight, which in turn improves the aerodynamics of the apparatus. Ka-118 equipped with a luggage compartment large enough for passengers. The machine has the ability to carry loads of up to 800 kg inside the cabin and up to 1200 kg on the suspension of the helicopter.
Helicopter model Ka-118 has many advantages in its construction. Unfortunately, this project was never carried out. The reason for this was the many reasons that happened at that time in the country. The main reason that the helicopter did not get into production, is the lack of adequate funding and customers.
Passenger capacity: 5-7
Capacity: 0.8 m (inside), 1.2 tonnes (on an external sling)
Length: 10 m
Main rotor diameter: 11 m
Main rotor diameter: 11 m
Height: 2.6 m
Normal takeoff weight: 2.15 t
Maximum takeoff weight: 2.7 t
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