|Bartini's Bizarre Behemoth|
|$215 Giclee on paper||Call 800-731-0060|
|Size 22 x 13|
|Military Aviation Art
A Soviet VVA-14 ekranoplan, or Wing-In-Ground (WIG) Effect vehicle, demonstrates it's abilities of speed and economy. One of the prototype designs of Roberto Bartini, and built by Beriev, it was the size of a Hercules transport.
If you want to know more, take a look at this:
If you build a hovercraft, you induce drag, which increases
resistance to the water, which decreases speed.
The ultimate low-drag marine craft would be a boat without
water contact, a hovercraft without a fan: a WIG boat. A WIG boat is a
boat with wings that cruises just above the water surface, it is floating
on a cushion of relatively high-pressure air between its wing and the
water surface. This cushion is created by the aerodynamic interaction
between the wing and the surface, called ground effect. This is where a
WIG boat is different from an aircraft, it cannot operate without ground
effect, so its operating height is limited relative to its size.
WIG is an abbreviation of Wing In Ground-effect. A WIG boat
can be seen as a crossover between a hovercraft and an aircraft. It flies
just above the surface, usually the water surface, therefore others use
the term WISE or WISES (Wing In Surface Effect Ship). The Russians use the
word Ekranoplan (Ekran = screen, plan = plane), which is also commonly
used in other languages nowadays. Some other
terms are commonly used in literature.
A hovercraft is floating on a cushion of air that is created
by a fan that blows in a cavity under its hull. The cavity is bounded by
so called skirts, rubber balloons that restrict air leakage and more or
less seal the cavity. The air cushion reduces the friction drag of the
hovercraft with the water which would make it a very efficient vehicle if
is wasn't for the fan that creates the cushion. A WIG craft also sits on a
cushion of air, but this cushion is created by aerodynamics rather than by
an engine. This means that it only exists when the WIG craft has
sufficient forward speed. This is called a dynamic air cushion as opposed
to the hovercrafts static air cushion. You can compare this to the
relation aircraft-helicopter, the aircrafts wings generate lift because of
their forward speed, whereas the helicopters rotor has work continuously
for generating lift. A more indepth explanation of ground effect
aerodynamics can be found in the aerodynamics
A WIG boat is especially designed to take advantage of the benefits of ground effect. Therefore it will always fly close to the surface. Although it is called ground effect, most WIG vehicles only operate over water, but some are amphibious. Some WIG vehicles have the ability to fly without ground effect as well, but inefficiently as compared to aircraft.