Ekranoplan
"AQUAGLIDE-5"


Basic characteristics

Power plant and transmission

Seaworthiness

Amphibious capability

Maneuverability

Airframe

Ship devices

Ship Systems

Electrical equipment

Communications, navigation and signalization

Operation conditions and basic supplying


VIDEO    PHOTO
Small five-seat passenger ekranoplan "AQUAGLIDE-5"
out of production
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Neva river Saint-Petersburg At the ATTK facility

DESCRIPTION (pdf)        VIDEO        PHOTO GALLERY

«Aquaglide-5» is a small passenger ekranoplan (WIG craft) of Type A under the IMO classification designed for transportation of five people, including the driver, with speed of up to 170 km/h on distance up to 450 km.
«Aquaglide-5» was designed and built in accordance with the requirements of "The Interim Guidelines for wing-in-ground (WIG) craft" approved by the Maritime Safety Committee of International Maritime Organization (IMO). "Aquaglide-5" has Safety code of IMO.

"Aquaglide-5" is certified by the Russian Maritime Register of Shipping (RMRS).

Intellectual property of "ATTK-INVEST", gained during WIG-craft creation, is protected by Russian and international patents on a design and main inventions.

Basic characteristics

 
Length overall 10.66 m   Maximum displacement 240 kg
Overall width 5.9 m   Laden mass 2010 kg
Height overall 3.35 m   Deadweight 506 kg
Width of midsection 1.4 m  

including:  

 
Crew 1 Captain  

Crew and equipment   

106 kg
Seating capacity 4 pax  

Payload   

300 kg
Cruising speed 150-170 km/h  

Fuel   

100 kg
Distance (range>), km 350-450   Hull material fiberglass
Cabin size:        
Length 3150 mm   from dash board to rear bulkhead  
Width 1270 / 1190 mm   at first seats row / at second seats row  
Height 1470 / 1375 mm   at first seats row / at second seats row  
Passenger seats:        
Aisle 280 / 200 mm   at first seats row / at second seats row  
Seats pitch 350 mm   between first and secon seats rows  
Seat size (WxL) 440 x 400 mm      

Power plant and transmission
Mercedes Benz V8 water-cooled gasoline car engine, 326 hp or diesel engine of the same producer of 313 hp are used as a power plant. Fuel consumption for cruising mode is about 32 kg per hour.
Power transmission from engine to two propellers is effected through central and two side gearboxes. The maximum torque on each output shaft is 335 Nm. Side gearboxes together with propellers can turn between 0 and 60 degrees relating to hull.
Fore-bladed propellers of variable pitch with 1400 mm. diameter ensure maximum thrust of  225 kg each.

Engine Propeller and side gearbox

Seaworthiness

Take off and movement of WIG-craft in cruise mode is provided at height of waves up to 0,3 m and wind speed up to 5 m/sec. Free drifting of ekranoplan hull is provided  at height of waves up to 1,25 m and wind speed up to 7 m/sec.

Amphibious capability

Ekranoplan can move in shallow water and get up on unequipped coastal aria with inclination of up to 5 degrees. Movement over land and getting out off the water is effected at speed of 10-15 km/h.


Maneuvrability

high maneuverability of «Aquaglide-5» is equipped by the mechanism of propellers’ feathering. The radius of WIG-crafts’ turn at low speed in displacement mode and at maximal feathering of propellers achieves not more than 1 length of hull. In addition to feathering mechanism, the retractable water rudder can be used while maneuvering at low speed. The total turn at cruising speed comprises not more than 1400 m. Radius of turn on the ground comprises  0,5 length of hull.

Airframe

Ekranoplan consists of following parts: hull, wing with flaps, skegs – ending parts of wings, keels with rudders, stabilizer. The main elements of frame are made from corrosion resistant materials and alloys (fiberglass, polyfoam, polyurethane foams, aluminum-magnesium alloys, stainless steel). All compartments are two insides painted. Load-carrying elements (frames, stringers, ribs, walls) are made of composite material. To increase hull’s rigidity in whole and strength of load-carrying parts - frames, main engine foundation, longitudinal beams, front part stringers, centre-section ribs, tow attachment - are made of aluminum alloy.
Wing consists of centre-section, two outer wings and four sectional flaps. Outer wings are bolted joint to centre-section. Air shock-absorbing devices (balloons) are attached to the left and right skegs which are the integral part of wings.



Rudders placed on keels are synchronously turned on maximum angle of 30 degrees to each board. Rudders are most effective at cruising speeds.
Wing flaps are displaced on angle of up to 20 degrees by electric actuator and bell cranks.

Ship devices

Ekranoplan is equipped with anchor weighing 10 kg and anchor tow, which consists of two parts of 25 meters each. When mooring the anchor tow is fixed by range cleat, placed on the wing.
For WIG-craft mooring four range cleats, placed fixed on the wing in front and stern parts 2 pieces on-board, are provided. For towing there is a bracket in front part of WIG-craft to which tow is connected.



Air shock-absorbing device is an inflatable construction that consists of three airballons-pontoons, fixed on the bottom of hull and skegs. The volume of airballons, their location relatively to the center of gravity and level of overpressure in airballons, created by pressure-charging system, provide for WIGE-craft good hydrostatic, amortizing and amphibious characteristics. Pressure in airballons during navigation is supported within the range of 2.0-2.5 kPa, while  amphibious operations – within the range of 1.0-1.5 kPa. The volume of one side airballon is - 0.97 cubic meters, of central airballon - 1,05 cubic meters.

Ship systems

Air conditioning system provides conditioning and ventilation regimes of passenger compartment. Switching of the systems’ modes is implemented by variation  of air valves position from driver panel.

Heating system is intended for heating of passenger compartment by car type heater. Salon is heated only while engine operating.

Hydraulic system is designed for injections of working fluid into hydraulic driving gear of propellers turn, variation of side gear transmission angle, inlet or outlet of water wheel.

Oil tank of 1 liter value and gear pump with the capacity of 6 - 8.5 liter/min under pressure 110 kg/sm2 are included in hydraulic system.

Pressure-charging system (PCS) is intended for air inflation and support of necessary air pressure level in central and side airballons. Two air pumps, valves of airballons and air transmitting channels are included in PCS.

Fire extinguisher system provides both an automatic activating and manual control of fire extinguisher from the driver panel through switches «1» and «2». While fire extinguishers activating they spray aerosol particles that reduce oxygen concentration in motor compartment and cover surfaces by protection coating that blocks the oxygen access. providing protection coating.  After fire extinguishers activating aerosol coating can be easily removed from the surfaces by vacuum equipment or washed with water. Equipment aerosol particles do not influence harmfully on materials and, they are harmless to humans.

Speed indicator feed system is to transfer dynamic and static pressure of the air pressure in the receiver pointer speed.

Windscreen cleaning system consists of double speed windscreen wiper with the gearbox, reservoir with electric pump, two dampers connected with reservoir by plastic tube.



Electrical equipment

On-board power supply system ensures all devices with direct current (DC) of 12V and 27V. Voltage of 12V is being distributed between the related devises of power plant, ventilation and air cooling system, signal horn and fire extinguisher system. Voltage of 27V is provided for signal lights, radionavigation equipment, lighting, WIG-craft movement control system, air pumps pressure-charging system and fire extinguisher system.

The power supply is provided by the following sources:
-  rechargeable battery of 12 V and 70 AH capacity intended for engine start and emergency power supply of all 12 V devices,
-  rechargeable battery of 24V, consisting of two 12 V batteries of 50 AH capacity intended for emergency power supply of all 27 V devices,
-  Generator (Bosch) with inside rectifier and regulator producing 13-14.2 V.

Generator with inside rectifier and regulator producing  27-31V

Communications, navigation and signalization

VHF band digital transceiver is installed on WIG-craft to provide for local two-side radio communication with ships and shore service, and automatic alarm.

The transceiver operates within frequency band of 156.025 - 159.175 MHz – in transmitting mode and 156.025 - 163.275 MHz - in receiving mode. The transmitters’ power supply is provided by 27 V system.

Ekranoplan positioning is provided by GPS / GLONASS satellite navigation receiver. Satellite navigation system can also determine the speed and travel time, regardless of weather.

Indicator of navigation system is placed on the left side of driving panel.
To provide ship heading there is magnetic compass on ekranoplan that shows true or magnetic courses. For the convenience of communication sessions the transceiver is connected to driver headset, and it can be switched on or off by button, located on the knob.

To provide communication sessions, including emergency situations, there are two sets of  two-way VHF band radio transceiver operating in frequency band of 156.300 - 159.850 MHz. Radiophones are located on driver workplace.



On the ekranoplan there is emergency radio buoy that conveys alarm signal to satellites of the COSPAS - SARSAT. To provide the transceiver operation two antennas of VHF and VHF DSC are installed on WIG-craft.

WIG-craft signal means include:
-   signal lights (circular  white light lamp, combined green and red lights on-board lamp, flashing circular red light lamp);
-   sound-signal;
-   alarm parachuting rockets of  red light;
-   floating smoke pellet;
-   red light falseflare;
-   special waterproof electric lamp to be used as portable signal lamp;
-   black ball, placed on the roof of passenger compartment as a signal of ekranoplan parking at anchor in daily time.

Operation conditions and basic supplying

Ekranoplan is intended for operation in daylight time alongside 20 miles of coastal zone with an allowable distance between the places of refuge not more than 100 miles.

Operating temperature span: -30C to +35C

"Aquaglide" design allows of its mooring to any equipped berths or getting out off costal aria for passengers boarding and unloading, maintenance and home location. Standard location for "Aquaglide" is shore location.

Short-term parking on the coastal area is provided by ekranoplan placement on airballoons of air shock-absorbing system, long term – by WIG-craft placement on keel-blocks situated under the bottom of wing or on special wheels that are used also for easy ground transportation. Lifting and fitting of WIG-craft on wheels is carried out by pneumo adjustable jack.

When disassembled for transportation (parting-off stabilizer, keels, rudders, screws, outer wing) WIG-craft can be fitted into 40 feet cargo container.

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