Airplane VL-3 evolution

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Technical informations

Wing span 8,44 m 27.7 ft
Length 6,24 m 20.5 ft
Height 2,05 m 6.7 ft
Wing area 9,77 m 2 105 ft 2
Stalling speed 55 km/h 30 kts
Maximum speed at horizontal flight 290 km/h 155 kts
Cruising speed 210-270 km/h 113-145 kts
Never to exceed speed VNE 305 km/h 165 kts
Engine output(Rotax 912 ULS) 73,5 kW 100 hp
Climb capability 6 m/s 1200 ft/min
Fuel consumption 8-18 l/h 2-4,5 gal/h
Fuel tanks volume 90-120 l 24-32 gal
Approach Speed 80 km/h 43 kts
M TOW   (without/with rescue system) 450/472,5 kg 992/1040 lb
View 360

Technical informations

Wing span 8,44 m 27.7 ft
Length 6,24 m 20.5 ft
Height 2,05 m 6.7 ft
Wing area 9,77 m 2 105 ft 2
Stalling speed 55 km/h 30 kts
Maximum speed at horizontal flight 290 km/h 155 kts
Cruising speed 210-240 km/h 113-129 kts
Never to exceed speed VNE 305 km/h 165 kts
Engine output(Rotax 912 ULS) 73,5 kW 100 hp
Climb capability 6 m/s 1200 ft/min
Fuel consumption 8-18 l/h 2-4,5 gal/h
Fuel tanks volume 90-120 l 24-32 gal
Approach Speed 80 km/h 43 kts
M TOW   (without/with rescue system) 450/472,5 kg 992/1040 lb

Airframe

The airframe is completely made of composite material which excels in its specific strength and excellent fatigue properties. The entire aircraft can be broken down into individual units, i. e., both halves of the wing and tail surfaces including stabilizers can be separated from the fuselage to ease aircraft transport.

Wing

Wing area has a modern laminar profil NACA HDF. This profile along with a slightly trapezoidal plan and precise surface quality have a significant interest in the high performance of the machine.

The aerodynamic design of the wing gives to the airplane good fall characteristics. The separation of air flow in the critical angle of slope happens at the root of the wing. This ensures good handling of the machine until it drops and symmetrically stalls.

The wing is a cantilever design with two cavities, which significantly increases the torsional strength. The flanges are made of carbon rowing. The cover of the wings is made of glass and carbon sandwiches, therefore there are no ribs in the wing.

The lift flaps are branch-type. Thanks to their large area, high efficiency and maintaining upper coating of the wing the stall speed of the airplane in landing configuration reaches value of 30 kts. Differential ailerons and flaps are controlled mechanically by a carbon rods.

The proof of effort to minimize aerodynamic resistance of the airframe is a technical solution of hinges and control rods of flaps and ailerons, which do not protrude from the profile of the wing.

The strain from each half of the wing is led away via two steel pins into the hull and through the cantilevers, which are mutually joined by pins to create a rigid unit.

The wing is fitted with two fuel tanks with a total volume of 90 or 120 liters. Each tank can be fitted with lockable lids.

Under the left half of the wing is the Pitot tube, which captures the total and static pressure for all flight instruments. There can be heated tube optionally.

Tail surfaces

The tail section is classical designed. The internal structure of the stabilizers is similar to the construction of the wings. Therefore the tail surfaces can be completely removed from the hull except the keel, which is its integral part.

The elevator trim tab is located on the right side. It is controlled mechanically by a wire. The rudder is controlled by steel ropes and elevator by carbon rods.

Landing gear

The customer can opt for variant with fixed or retractable landing gear.

The main landing gear consists of laminated springs, which are equipped with tired wheels of size 14x4". Bow leg has steel construction and it is suspended with a rubber silent block. This leg is equipped with a wheel of size 12x4".

The wheels can be equipped with aerodynamic fiberglass covers, in the case of a solid landing gear.

Retractable landing gear

The main and nose landing gear is retracted by hydraulic cylinders. The nose wheel retracts to the back into the shaft in the fuselage, the main wheels retract to the center back into the shafts in the trunk compartment. Retraction of the wheels is achieved by a hydraulic unit, which gets the rounds from one to another position during 14 seconds. The wheels are fixed up by hydraulic locks in their outer positions.

The landing gear is operated simply by switch on the dashboard, which also indicates via LED open or closed state of each wheel and working hydraulic power unit.

The wheels are pushed completely into the hull, without protruding from the profile of the airplane and significantly contributes to its low resistance. Land gears shafts are then completly hidden by cover.

The hydraulic unit is operated electrically. Therefore the landing gear is functional even if the engine fails. In the case of failure of the hydraulic unit there is way to realize the emergency eject of landing gear by manual hydraulic pump, which is located next to the pilot's seat.

Brake system

Both main wheels are braked by hydraulic brakes, which are controlled by foot pedals for steering. Each wheel is braked individually. The braking system can be duplicated. Upon request, the airplane can be equipped with a parking brake.

Engine

The power unit consists of an air plane engine ROTAX 912 UL with 80 HP or ROTAX 912IS, ROTAX 912ULS with 100 HP. Rotax 912 is a four-cylinder, four-stroke engine with antipodal cylinders, central camshaft and OHV wiring. The engine is attached to the engine bed suspended on the anti-fire wall.

The engine cooling is combined – cylinder heads are cooled by water, the cylinders are cooled by air. The lubrication is with the dry box. The ignition is double non-contact, condenser with a magnet. The engine is equipped with an electric starter, AC generator and a mechanical fuel pump. The propeller is driven through an integrated gearbox and slipper clutch.

The engine installation can be extended by an electric fuel pump, an airbox, a fire protection of the fuel and oil hoses or an auxiliary generator.

The engine is equipped with sensors which sense the parameters of its operation, i. e., fuel pressure, fuel flow, oil pressure, oil temperature, temperature of cylinder heads, exhaust temperature or underpressure of suction.

Propeller

Customers can choose between fixed and variable pitch propeller. The in-flight electrically adjustable propeller is offered in two versions – two-blade/three-blade by Woodcomp or Arplast. It is installed with a constant speed device.

As fixed propellers are used the three-blade props by Peszke or DUC Helices, which are able (due to their unique carbon construction) to change the angle of the blades with changing speed and thus partly compensate the function of the in-flight adjustable propeller.

Cockpit

Behind the anti-fire wall separating the engine compartment from the trunk there is the heart of the aircraft – the cockpit. The composite fuselage structure in the cabin area is made up of so-called hybrid, i. e. a combination of carbon and aramid fibers, which is extremely tough, providing safety to the crew in case of an emergency landing.

Canopy

Good view from the airplane provides the great canopy, which is made from one piece of acrylic glass, offered in clear or color design in shades of blue, green and brown. The canopy can be easily folded, in charge of its lifting are two gas struts. The canopy is equipped with a locking latch, which can be easily locked by key from the outside.

Looking to back hemisphere is provided by two windows located on the sides, which are installed into the airplane as standard. Their color is always the same as the color of the main canopy.

Controls

All the controls of the main and auxiliary systems are digestedly and ergonomically arranged in the cockpit.

The engine throttle and elevator trim control is located in the center console under the dashboard. Their control is very convenient, since none of the drivers must be detented. The lever of the mechanical controlling of the flaps is located directly between the seats.

Foot control is equipped with brake cylinders. The brake system can be installed for the co-pilot seat as well. The control of parking brake is located under the center panel and it is controlled manually from pilots position.

Each seat has a stick of standard construction.

Dashboard

We are able to install a wide array of avionics into the aircraft. From conventional mechanical flight and engine instruments to the combined unit, called "glass cockpit", or their combination.

We offer several types of GPS, radios and transponders. We are able to link selected devices for their mutual communication to facilitate piloting an airplane. Selected mechanical clocks can be equipped with controlled light exposure.

We have experience with installing two types of two-axis autopilots, which is particularly handy for long haul flights. On request of the customer we will equip the airplane with a VOR navigation system.

Each dashboard is made to measure for the customer, according to the specification of the concrete airplane. The instruments are mounted in a laser-fired plate with surface inscriptions created by serigraphy – wihtout stamps.

Cabin interior

The width of the cabin in place of the crew seats ensures that there will be a comfortable place for both pilots. The interior of cabin is equipped with basic fabric upholstery. On request it is possible to choose from several comfortable textile and leather versions in different colors. The solid seats are equipped with four-point safety belts, whose color is aligned with the color of the upholstery.


Ventilation and heating

The aircraft is equipped with efficient ventilation and heating system. The drivers are under the dashboard on the left side. Warm air is distributed to the legs area, cold air is going through vents on the upper surface of the dashboard.

The canopy can be fitted with simple round or sliding windows with air vent valves.


Baggage compartment

Behind the pilot seats there is the baggage compartment. It is accessible from inside of the cabin through the area above the seats.

It is equipped with holders for headphones and audio outputs for their involvement. On request a net can be installed into the baggage compartment.

Rescue system

Customers can choose a rescue system by Galaxy into their airplane, which is applicable at maximum take-off weight up to speed of 162 kts.

The system is newly installed behind the anti-fire wall. In case of using the rescue system, the airplane is attached to it by four carrying points in his center. This will ensure its stability in flight on a parachute. After using it and in case of small damage to the airplane, the rescue system can be installed into the airplane again.

Lighting

The airplane can be equipped with several types of position, anti-collision and lantern lights at the ends of the wings and keel, including the landing light in the lower engine cowling.

Stickers

Customer can choose from several types of color stickers, which can be color-coordinated with airplane interior.