Aviaspetstrans Yamal amphibian

Hello Hesham!
This project was designed in late 1980s/early 1990s by Vladislav Korchagin, as a development of KAI-20 Angara, which was designed by him even in 1964 but was never built. Like the Angara, the Yamal was a multi-purpose amphibian (passenger, transport, medical, ice patrol, etc...) designed specially for Northern regions of Russia. Unfortunately, the destroying of industry afterwards Yeltsin's "reforms" and lack of financing led to death of this interesting project (and many others... :( ). After 1998 default all was stopped, thus almost all engineering works were finished and the aircraft was almost ready to production. Only full-scale mockup of the Yamal was built in 1994...

Wingspan - 21.40 m
Length - 17.47 m
Wing area - 51.90 m2
Empty weight - 4500 kg
Max. takeoff weight - 9200 kg
Engines - two turboshaft RD-600S (2x1300 hp). Alternative version - two TVD-1500.
Maximum speed - 450 km/h
Range - 2800 km
Service ceiling - 3600 m
Crew - 2
Payload - 2000 kg (max. 22 passengers)

More detailed info (in Russian only):


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Composite photograph (top) of full-size Aviaspetstrans Yamal mockup.

Inboard profile (second) of Aviaspetstrans Yamal cabin configurations.

Remaining images are possible color schemes.

Source: http://www.airwar.ru/enc/sea/yamal.html


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Aviapetstrans Consotium
Zhukovsky 5, Moscow Region

Consortium formed in 1990 by Russia's Arctic and Antarctic Research Institute, Scientific Research Institute for Civil Aviation, Gasprom gas enterprises, Institute of Oceanography Engineering Center, People of the North Foundation, Myasischev Design Bureau and Promstroybank. These have a common interest in air transport in remote regions of the north, Siberia and Far East. Aviapetstrans will market services such as monitoring systems and navigation aids as well as aircraft of its own design. First aircraft project headed by Chief Designer/Director General VA Korchagin, is amphibious twin-tuboshaft Yamal, capable of autonomous operation in regions with minimal transport infrastructure.

Source: Jackson, Paul editor. Jane's All the World's Aircraft 1995-96 Jane's Information Group Limited 1995 p. 308.
Aviapetstrans Yamal

Type: Twin-turboshaft cargo/passenger multi-purpose amphibian.

Program: Work performed by five scientific and research institutes and aviation design bureaus under Gosaviaregstr supervision, consistent with FAR requirements. Development delegated to Myasishchev OKB. Full-scale mockup exhibited at MosAeroshow '92; prototype was to be manufactured in Moscow; first flight was scheduled early 1998.

Design features: Basically conventional small amphibian. Unique power plant; two turboshafts side by side on top decking over center-wing section, driving single pusher propeller mounted behind tail unit, through helicopter-like reduction gearbox; position of air-intakes protects them from water and foreign object ingestion. Flying-boat hull and two fixed underwing stabilizing floats. All between-flights servicing of systems and equipment possible from technical bay inside fuselage; access to engine inspection points is provided through access panels in technical bay ceiling, protecting engineer from low temperature, precipitation, mosquitoes, and effects of waves on water. Similar access practicable to remedy in-flight failure.

Landing gear: Retractable tail wheel type; twin wheels on each main unit; all units retract upward, main units into sponsons each side of hull. Optional nosewheel gear under development.

Power plant: Two RKBM RD600S (TVD-1500) turboshafts; six-blade propeller, dimensions and aerodynamics similar to those of of Il-114 propellers. Fuel tank, capacity 2,400 kg (5,291 lb), between spars on each wing.

Accommodation: Provision for 18 passengers from land, 15 from water, or freight stretchers and medical equipment, cameras, equipment for variety of commercial and military duties.

Avionics: Radar in nose thimble.

Equipment: Optional equipment being developed for ecological monitoring, forest protection and firefighting, ice and fish reconnaissance, 200 mile economic zone patrol, and air/sea rescue.

Dimensions external
Wing span: 21.40 m (70 ft 2.5 in)
Length overall: 16.825 m (55 ft 2.5 in)
Height overall: 5.367 m (17 ft 7.5 in)

Dimensions internal
Passenger cabin volume: 23.4 cu m (826 cu ft)

Wings, gross: 51.9 sq m (558.7 sq ft)

Weights and loadings
Max payload: 2,000 kg (4,410 lb)

Performance (estimated at max T-O weight)

Max cruising speed at 7,500 m (24,600 ft): 235 kts (435 km/h; 270 mph)
Econ cruising speed at 7,500 m (24,600 ft): 202 kts (375 km/h; 233 mph)
T-O run on land: 225 m (740 ft)
T-O run on water: 230 m (755 ft)
Range with max payload at max cruising speed: 631 n miles (1,170 km; 727 miles)
Range with max payload at econ cruising speed: 755 n miles (1,400 km; 870 miles)
Range with 500 kg (1,100 lb) payload at max cruising speed: 2,212 n miles (4,100 km; 2,547 miles)
Range with 500 kg (1,100 lb) payload at econ cruising speed: 2,374 n miles (4,400 km; 2,734 miles)

Source: Jackson, Paul editor. Jane's All the World's Aircraft 1995-96 Jane's Information Group Limited 1995 pp. 308-309.
Given the conditions in which it would work, having access to engine etc via internal bay strikes me as very useful.

Hope fire-suppression is up to the job, though...
Several missing episodes:
1) KAI-18 / 1ASh-62 / (1952-56)
2) KAI-20 Angara

Wingspan, m 20.00
Lenght 15.30 m
Height, m 5.55
Wing area, m2 42.50
Weight, kg
Empty aircraft 3226
Normal take-off 6275
Engine type TBG 2 TVD-10
Power, hp 2 x 750
Maximum speed, km / h 570
Cruising speed, km / h 500
Range, km 2100
Ceiling, m 12000
Crew 2
Payload: up to 16 people or 1,414 kg of cargo

3) Yamal-2 (1991)

Wing area, m2 84,1
Length, m 23,5
Height, m 8,0
Engine Type 2 TVDD TV-7-117
Power, hp 2 x 2500
Maximum speed, km / h 540
Weight, kg
Empty aircraft 11540
Loaded 21000
Range, km 4300
Payload: up to 58 people or 6000 kg of cargo

4) Yamal-6 (1991-96)

Wing span, m 12.8
Wing area, m2 20.48
Weight, kg
Empty aircraft 1700
normal takeoff, kg 2750
Engine type RT6A-27/28
Power, hp 680
Maximum speed, km / h 420
Range, 900 km
Crew 2
Payload: up to 5 people

5) Kayra ( "diving-pigeon" / guilemot) 1992-93
Structurally the aircraft is close to, with the WIG effect, design bureau by EMZ V. Myasishchev

Sources: http://www.airwar.ru/enc/sea/angara.html
Konstantine Udalov. Airplane Angara Avico Press 1993
K. Udalov, V. Pogodin. Angara. magazine "Wings of Motherland" № 3-2004
K. Udalov, V. Pogodin. Yamal-2. magazine "Wings of Motherland" № 8-2004
K. Udalov, V. Pogodin. Yamal-6. magazine "Wings of Motherland" № 11-2004
A. Brook, K. Udalov, V. Pogodin, S. Smirnov, A. Arkhipov, B. Puntus
"Illustrated Encyclopedia of Aircraft EMZ V. Myasishchev's" Volume 10
Special thanks to K.G. Udalov, well known to us as Ukon


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Thanks borovik, nice projects... ::)

...but you forget a pic from KAI-18? :-\

Thanks Maveric
Artist's impression (first image) KAI-20 Angara.

Three-view line drawing (second image) of KAI-20 Angara.

Artist's impression (third image) of KAI-20 Angara in Polar Aviation livery.

Artist's impression (fourth image) of KAI-20 Angara in Aeroflot livery.

Artist's impression (fifth image) of KAI-20 Angara medical variant.

Source: http://www.airwar.ru/enc/sea/angara.html


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Photograph of full-size Aviaspetstrans Yamal mockup.

Source: Petrov, GF. Russian Seaplanes and WIG Types 1919-1999


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the suffix KAI was used for Kazan,but I find no relationship
between Kazan and Korchagin !.
hesham said:

the suffix KAI was used for Kazan,but I find no relationship
between Kazan and Korchagin !.
From 1956 to 1960 V. Korchagin closely related to the Kazan Aviation Institute (KAI). During this period he led student design bureau (SKB-KAI)
From Krylya Rodine 8/2004,

here is the Korchagin/Aviaspetstrans Yamel-2.


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Dear elena,
Please ask your friend Valentin if those narrow "sponsons/seawings provide much hydrodynamic lift.
We understand that their primary function is to conceal main landing gear.
Photograph of full-size Aviaspetstrans Yamal mockup.

Source: Petrov, GF. Russian Seaplanes and WIG Types 1919-1999
I came across another photo of the Yamal mockup next to the Buran-Analogue 002
taken in 1999, at Zhukovsky, via this blog post on the excellent "Drew Ex Machina" spaceflight and astronomy blog


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