The hovercraft is equipped with two Cummins 6ISB 300 engines, each with a power of 300 hp.
Four-stroke six-cylinder diesel engine with an electronic Common Rail fuel supply system, with an in-line arrangement of cylinders and pistons rotating one common crankshaft, with a lower camshaft. The Cummins 6isb 300 engine is designed for installation in medium- and heavy-duty trucks. In the domestic industry, it is used as a power unit for vehicles such as KAMAZ 6460 and 6520. The engine has a closed-type liquid cooling system with forced circulation. The lubrication system is combined: under pressure and splashing.
The rated power of the Kamens 6isb 300 engine is 224 kW, which in terms of horsepower is equal to 300 units. This figure, for clarity, is included in the motor markings. The specific power of the 6isb 300 is 0.36 kW per 1 kg of engine weight, and the specific torque is 1.45 Nm/kg.
To increase power parameters, the Cummins power unit is equipped with a VGT turbocharger, which, in addition to its main function, helps save fuel when operating at full power.
For Cummins 6isb 300, the length/width/height are within the range of 1260 mm, 930 mm and 1045 mm, respectively. The weight when fueled is 616 kg, while the weight of the “dry” engine is only 522 kg. The relatively light weight of the engine allows for more efficient use of the lifting capacity of the hovercraft.
Engine oil consumption when operating at rated power (300 hp) is 0.1% of fuel consumption.
Currently, the engine is produced at the KAMAZ plant in Russia.
| Engine type |
4-stroke 6-cylinder Cummins 6ISB 300 |
| Number of engines, pcs. |
2 |
| Power, hp. (kW) |
300(220) x2 |
| Maximum speed, rpm |
2600 |
| Working volume, cubic cm |
6700 |
| Fuel system |
Common Rail from Bosch |
| Specific fuel consumption of one engine, g*hp/h |
200 |
| Cooling system |
Liquid |
| Weight of dry engine, kg |
522 |
The option of replacing KAMAZ-Cummins engines with YaMZ-536 engines with similar characteristics is allowed.
Flexible fencing
The amphibious qualities of the hovercraft are ensured by lifting the body away from the screen by holding the air cushion under the body with a flexible fence. The lift height depends on the speed of the superchargers (engines) and the trim angle.
The hovercraft uses a two-tier flexible fencing scheme with removable elements along the entire perimeter of the lower
tier and with a flexible receiver in the upper.
This scheme allows the removable elements to remain elastic. Those. when passing obstacles, the flexible elements deflect and allow the object to pass underneath them without resisting its influence.
Only the lower segmental tier, which consists of many independent elements, is involved in contact with the surface. Each element is attached to the receiver with four clamps. Replacement is simple and does not require special tools or skills.
Thanks to the constant air flow in the VP, the GO will maintain the ability to move the hovercraft even if all removable elements are lost. GO material is rubberized fabric based on rubber nylon. This fabric allows you to straighten and take a given shape in low temperatures.
The maximum achievable height of the air cushion is about 0.9 m. The height of the air cushion is measured from the supporting hard surface to the bottom of the housing.
Propellers and superchargers
As movers on Hovercraft is equipped with two four-bladed variable pitch propellers in aerodynamic fixed nozzles. The variable pitch propeller support unit and the reverse mechanism are located in the pylons of each nozzle. The material of the propeller blades is a composite of fiberglass with an aramid coating. The rotation angle of the propeller blades is controlled by direction indicators installed in the control panel.
Two twin centrifugal superchargers are provided as air cushion superchargers. Air cushion blowers operate separately, each on its own side. The superchargers are mounted on shafts supported on both sides by self-aligning bearings. The supercharger material is a composite of fiberglass, carbon fiber and aramid.
Separate control of supercharger speeds (n1 and n2) and sectioning of air cushion zones allows you to create different pressures in the left P1 and right P2 halves. This property makes it possible to create an artificial roll, which greatly helps during maneuvers and helps neutralize the effect of side gusts of wind. In case of failure of the engine or supercharger of one of the sides, the jumper between the zones is removed and the flexible fence is filled with air from the working supercharger. The hovercraft can continue to move on one supercharger.
Management
Directional control is provided by turning the steering wheel in the control station and rudders installed in the flow behind the propulsors. Turning the control surfaces provides control torque with the center of rotation in the nose area.
Provision is made for shifting variable pitch propellers from the FORWARD position to the REVERSE position. Shifting is done both jointly and separately using pedals located at the driver’s feet. The separate shift provides control torque with the center of rotation in the stern area.
The propeller speed is controlled, which provides different thrust and creates a control torque with the center of rotation in the stern area. The possibility of hovering on an air cushion at low speeds is provided by installing the propeller blades in several intermediate positions in the range of angles from full forward to full rear. It is ensured that the blade of one propeller is shifted backwards, and the blade of the other propeller is correspondingly shifted forward (work in conflict).
Remote control of the power plant is carried out using levers located on the control panel.