JAI JAI-60 60 years of the JAI

The JAI-60 (Russian: ЄАИ-60) all-metal trainer was designed at the SKB JAI and built at the Kharkov Aviation Factory in 1990, in commemoration of the 60 years of the JAI.

One of the last works of the SKB JAI was the JAI-60 light aircraft (also known as ā€œ60 years of the JAIā€) design began in 1985, when the magazine “Krilya Rodini” (Wings of the Fatherland), together with the DOSAAF and the NII MAP, launched a competition for the development and construction of a light aircraft for primary training.

The design group was led by the head of NIL OSKB JAI Gennadi G. Jmyz. The developers, from the very beginning, decided that the new model should be useful not only for training, but also for transporting passengers and cargo. In compliance with the conditions of the contest, great attention was paid to the take-off and landing characteristics, and the ability to operate from airfields with asphalt runway, and the ability to tow gliders.

The JAI-60 was designed as a high-wing, braced monoplane with a conventional type tail unit. In its construction, the wing has negative sagging (-7Āŗ).

The landing gear features fixed main titanium legs. The enclosed cabin easily accommodates the pilot and two passengers, also featuring a luggage compartment.

This model originally featured an MZ three-cylinder engine capable of 110 hp, but due to strong vibrations it was soon replaced by a 140 hp Czechoslovak M-332 engine.

The fuel system featured tanks located on the wing leading edge for a range of 700 km and capacity for a suspended auxiliary tank.

The JAI-60 prototype flew in 1990. Only the one was built.

Engine: MZ, 115 hp
Wingspan: 10.0 m
Wing area: 12.0 m²
Length: 6.2 m
Empty weight: 406 kg
Maximum takeoff weight: 680 kg
Maximum speed at sea level: 240 km / h
Landing speed: 70 km / h
Range: 670 km
Take-off run: 100 m
Landing run: 80 m
Accommodation: 1

JAI JAI-48

The JAI-48 (Russian: ЄАИ-48) was developed by the SKB JAI student group as a two-seater light aircraft. This model, of a tricycle undercarriage, shows a clear descent from the previous models of the group.

Structurally it was similar in its construction to the JAI-35, with a minimalist fuselage made up of a structure of tubes and metal sheets to which a vertical bar was fixed on which the wing plane was supported, braced by uprights. As control structures the wings had ailerons.

The tail unit was of the conventional type with a mid-set empennage, braced by uprights.

The landing gear is fixed tricycle type, with the main wheels on titanium legs and the front wheel, steerable, with oil-pneumatic suspension.

The crew members were located in an open cockpit with a simple instrument panel and a transparent windshield.

The engine was located under the wing, driving a two-bladed propeller in pusher configuration.

Only one was built.

JAI JAI-47

The JAI-47 (Russian: ЄАИ-47) two-seater sport deltaplane was developed by a group of JAI students in 1989.

Only the one was built.

JAI-47
Engine: RMZ-640, 35 hp
Wingspan: 9.0 m
Length: 2.2 m
Wing area: 12.0 m²
Empty weight: 125 kg
Maximum takeoff weight: 295 kg
Maximum speed at sea level: 50 km / h
Range: 200 km
Take-off run: 25 m
Landing run: 25 m
Accommodation: 2

JAI JAI-46

The JAI-46 (Russian: ЄАИ-46) sport deltaplane was developed by a group of JAI students in 1988.

The JAI-41 participated in the First Soviet Glider Championship, which took place in September 1988 in Crimea, receiving the gold medal of the competition for its category.

Only the one was built.

JAI-46
Engine: RMZ-640, 35 hp
Wingspan: 9.0 m
Length: 2.2 m
Wing area: 12.0 m²
Empty weight: 120 kg
Maximum takeoff weight: 215 kg
Maximum speed at sea level: 45 km / h
Range: 250 km
Take-off run: 25 m
Landing run: 15 m
Accommodation: 1

JAI JAI-45

The JAI-45 (Russian: ЄАИ-45) light sports aircraft was developed at SKB JAI in 1989.

Metal tubes were used in its construction and due to the lack of experience in this construction, the plane was not as simple as its builders expected.

JAI-45
Engine: 35 hp RMZ-640
Wingspan: 6.1 m
Length: 4.3 m
Wing area: 8.8 m²
Empty weight: 142 kg
Maximum takeoff weight: 283 kg
Maximum speed at sea level: 116 km / h
Landing speed: 54 km / h
Range: 130 km
Accommodation: 1

JAI JAI-44

The JAI-44 (Russian: ЄАИ-44) was developed by the SKB JAI student collective as a light sports aircraft and was released in 1989.

Engine: 54 hp FW-1600
Wingspan: 7.5 m
Length: 5.5 m
Wing area: 14.25 m²
Empty weight: 230 kg
Maximum takeoff weight: 330 kg
Maximum speed at sea level: 110 km / h
Landing speed: 52 km / h
Accommodation: 1

JAI JAI-42 Rosinant

The JAI-42 (Russian: ЄАИ-42) was developed by the SKB JAI student group as a light sports aircraft and was launched in 1987, receiving the nickname ā€œRosinanteā€ in resemblance to Don Quixote’s lanky horse.

Only the one was built, first flying in 1987.

JAI-42 Rosinant
Engine: 35 hp RMZ-640
Wingspan: 8.4 m
Length: 4.5 m
Wing area: 10.2 m²
Empty weight: 192 kg
Maximum takeoff weight: 280 kg
Maximum speed at sea level: 85 km / h
Landing speed: 60 km / h
Range: 130 km
Accommodation: 1

JAI JAI-41

The two-seater JAI-41 (Russian: ЄАИ-41) was designed as a pilot training and teaching motor-deltaplane and for the development of topographic surveys, aerial photography and cartography tasks.

Developed at the JAI in 1987, the JAI-41 participated in the First Soviet Glider Championship, which took place in September 1988 in Crimea.

Only the one was built.

Engine: 42-hp Vulcan V-40
Wingspan: 10.0 m
Length: 3.6 m
Wing area: 16,6 m²
Empty weight: 120 kg
Maximum takeoff weight: 220 kg
Maximum speed at sea level: 70 km / h
Landing speed: 40 km / h
Range: 160 km
Take-off run: 30 m
Accommodation: 1

JAI JAI-40

In 1986 at SKB JAI a light aircraft named JAI-40 (Russian: ЄАИ-40) and nicknamed ā€œVOKā€ was developed. Originally this device was obtained as a student work directed by G. Jmyz from the previous JAI-21. The aircraft was safe, light in handling and excellent speed and economy characteristics.

The JAI-40 was designed as a mixed construction single-seater high-wing monoplane. The wing, braced by inverted V posts, was constructed of wood with some use of composite materials and featured control surfaces along the entire length of the trailing edge.

The bar-type fuselage was constructed of metal tubes and sheets.

The glue unit was conceived on the basis of a fabric-coated duralumin tube structure. The horizontal planes were located high above the empennage and were braced to the structure by cables. The rudder featured a large area.

The landing gear was designed in a tricycle configuration. The front wheel was of the steerable type and was located directly at the bow of the device. The pilot sat in a seat on the basic structure of the fuselage. To avoid impacts during landing at large approach angles, a skid was installed under the rear of the fuselage.

The drive configuration difficulties were offset by installing a 35 hp RMZ-640 geared motor. This engine was installed directly on the vertical pylon for fixing the wings, moving a propeller with two wooden blades 1.38 meters in diameter. The selection of the engine and the use of a wing with 8.2 aspect ratio allowed the model to fly easily and have an excellent take-off step. Later and in order to improve performance, a 42 hp Vulcan engine designed by VP Manuilenko would be installed, moving a propeller of 1.51 meters in diameter.

Its further development was reinforced and in 1988 it reached first place in its class in the light aircraft competition held in TĆŗshino. With a takeoff weight of 305 kg and a 42 hp engine this little machine was capable of reaching 105 km / h.

JAI-40 in its final version

The JAI-40 successfully participated in the SLA-87 light aircraft competition.

JAI-40
Engine: 1 x Vulcan 42 hp
Wingspan: 8.50 m
Length: 4.75 m
Wing area: 9.60 m²
Tailplane wingspan: 5 m
Vertical fin area: 1.64 m²
Rudder area: 0.90 m²
Queue area: 1.40 m²
Elevators area: 0.86 m²
Wing aspect ratio: 8.7
Wing Profile: GA (W) -1
Wheel spacing: 2.05m
Empty weight: 172 kg
Gross weight: 262 kg
Maximum takeoff weight: 305 kg
Wing loading: 2.44 lb / sq.ft
Power load: 7.48 kg / hp
Fuel capacity: 10 liters
Maximum speed: 105 km / h
Cruising speed: 95 km / h
Stall speed: 55 km / h
Ascent speed: 128 m / min
Practical range: 90 km
Accommodation: 1

JAI JAI-39

The JAI-39 (Russian: ЄАИ-39) was designed at SKB JAI in 1978 as a single-seat experimental light aircraft of twin-engine configuration.

Only one example was built.

JAI-39
Engines: two 4 hp Druzhba
Wingspan: 10.65 m
Wing area: 17.63 m²
Length: 3.62 m
Empty weight: 42.65 kg
Maximum takeoff weight: 140 kg
Maximum speed at sea level: 45 km / h
Landing speed: 22 km / h
Take-off run: 10 m
Accommodation: 1