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"WING-IN-GROUND-EFFECT (WIG) AIRCRAFT

This is a discussion on "WING-IN-GROUND-EFFECT (WIG) AIRCRAFT within the Military Photos & Videos forum, part of the Global Defense & Military category; Strange designs by Sukhoi!!! S-90-200 passenger WIG aircraft project. Passenger capacity: 220 S-90-8 PASSENGER WIG (PROJECT) The S-90-8 WIG vehicle ...


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Old January 19th, 2004   #1
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"WING-IN-GROUND-EFFECT (WIG) AIRCRAFT

Strange designs by Sukhoi!!!



S-90-200 passenger WIG aircraft project. Passenger capacity: 220

S-90-8 PASSENGER WIG (PROJECT)

The S-90-8 WIG vehicle is the latest representative of the WIG vehicle family designed by Sukhoi Design Bureau. The S-90-8 is a high speed passenger craft intended for carrying 8 passengers over a water surface on short-haul routes. Its design features are a high speed, comfort and cost effectiveness. The high performance of the WIG vehicle is the result of its perfect aerodynamics, the use of advanced scientific and engineering solutions, an optimized powerplant based on the Czech-built M601 seriesproduced engine, and advanced on-board equipment. Besides, the development of the S90-8 is additionally aimed at creating the vehicle, the development, building and test experience of which will allow to extend the development work on larger WIG vehicle with a less technical risk. A brief description of the S-90-8 design is given below. Aerodynamically, the S-90-8 is a two-fuselage craft of conventional aerodynamic configuration with a center-wing section arranged between the fuselages.

Fuselage. The fuselages of a moderate fineness ratio are ogival cross-section structures which have segmented rubber-fabric shells on their bottom surfaces. The arrangement of the left and right fuselages is similar. The nose section of each accommodates an electronic equipment bay followed by a passenger cabin. There are a pilots station and three passenger seats in the left passenger cabin, and four passenger seats in the right one. A large glazing area of the bubble canopies affords good view in all directions. Between the fuselage is a thick profiled centerwing section with a cutout (a shaped port) located in its forward part, to pass the propeller air stream for creating a static air cushion. This radically improved the aerodynamic characteristics of the vehicle and ensures take-off from, and landing onawaterorfirm surface.

Wing and Tail Surfaces: The wings, with an aspect ratio of 5.0, are slightly swept forward at the leading edges, the sweep angle being -1deg. The wings are fitted with ailerons for lateral control. Dihedral is 100. The tail sections of the vehicle fuselages mount a Vee tail unit, the panels of which are canted 450 outside. Each of the tail unit panels has a control surface.

Powerplant. An engine nacelle housing the M-601 turboprop engine with a four-bladed variable pitch coaxial propeller is mounted on a pylon located along the line of symmetry of the center-wing section in its forward part. The engine is rated at 740 hp (551 kW).

S-90-8 SPECIFICATIONS AND PERFORMANCE

Length ft(m) 38.38(11.7)

Wingspan ft (in) 49.53(15.1)

Height ft(m) 11.48(3.5)

Tailpiane span ft(m) 30.50(9.3)

Wing area w/center section ft2(m2) 518.78(48.2)

Center section area ft2(m2) 393.93(36.6)

Outerwing panel area ft2(m2) 124.85(11.6)

Aileron area ft2(m2) 14.10(1.31)

Tailplane area ft2(m2) 118.39(11.0)

Control surfaces area ft2 (m2) 30.78(2.86)

Wing leading edge forward sweep angle -1 deg

Tailpiane incidence 30

Takeoff gross weight lb (kg) 8,155(3,700)

Fuel weight lb(kg) 1,102(500)

Wing loading @ norm takeoff weight lb/ft2 (kg/m2) 15.71(77)

Specific power @ standard takeoff weight hp/lb(hp/kg) .44 (.2)

Max speed mph (kmh) 186(300)

Cruise speed mph (kmh) 124(200)

Max range ml (kin) 397 (640)

Range w/max payioad ml (kin) 273(440)

Max flight altitude ft(m) 4,920(1,500)

Ground effect altitude ft (in) 4.9-6.6(1.5-2)

Passenger capaclty 6 [Strange plane yet so few can sit]

The S-90-200 features the following technical novelties:

-the aerodynamic configuration with a highlyefficient plus-shape wing;

-a capability of transition from WIG flight to medium-altitude flight;

-a retractable flexible skirt for changing from static pressurization during take-off to dynamic pressurization in flight;

-a cruise engine for static pressurization of the center-wing section during take-off and landing;

-longitudinal segmented components of the flexible skirt for shock absorption during landing;

-the ability to taxi on water, snow-covered, swampy and grass-covered surfaces.



for more info go here
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Old January 19th, 2004   #2
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Re: "WING-IN-GROUND-EFFECT (WIG) AIRCRAFT

The Ekranoplans making a comeback.

A completely underrated design...Just one burning question: Sea State 10. What happens? Maintain a much higher altitude for the rest of the flight?
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Old January 19th, 2004   #3
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I bet these are not in production? Tell me they are not!
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Old January 19th, 2004   #4
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Originally Posted by PAF GIRL
I bet these are not in production? Tell me they are not!
Yep. All developed, then the Soviet Union leaps off a cliff (into a bottomless pit). I think there are abandoned factories still with incomplete production lines somewhere/everywhere.
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Old January 19th, 2004   #5
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Re: "WING-IN-GROUND-EFFECT (WIG) AIRCRAFT

Hasn't a company in the US picked up the license rights on some of these? IIRC there is a small WIG being trialled on Lake Eyrie....
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Old January 20th, 2004   #6
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russian passenger planes never seem to work out. we hear all the time about an il-76 or some tupelov crashing.
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Old January 20th, 2004   #7
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Re: "WING-IN-GROUND-EFFECT (WIG) AIRCRAFT

some of that is due to extremely poor training and support standards.

personally I would not buy a russian "turnkey" solution. I would want to manage every stage of the production, supply, construction and delivery process.
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Old January 20th, 2004   #8
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PAF girl no they are not in production or in service anymore! If they are they should follow the same fate as Ukrainian tu-122s-wreck em.
(Ukrain recenlty destroyed its 12 tu-122 bombers and i have some pics of them being trashed and will be posting their pics soon as well.)
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Old January 23rd, 2004   #9
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Re: "WING-IN-GROUND-EFFECT (WIG) AIRCRAFT

They are fascinating to say the least. Practicallity wise they are kind of geography specific, sort of like the hovercrafts that make the run across the channel.
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