INTRODUCTION As people have seen, the giant industrial wind farms, small household wind turbines, and also everything in between are erecting all over the places. In 2012, the electricity capacity from the wind power in the total electric capacity is about 7.2% in EU, 2.0% in China, and 3.6% in US. Nevertheless, most people agree that wind energy should claim much greater share of the future energy supply. For eg:-, the United States is working on an ambitious target of 21% total electricity capacity by 2030. Indeed, wind energy is one of the fastest growing energy sources today and also in the foreseeable future. However, findings a suitable site to build the wind farm or simply set up the wind turbine is not always easy. The wind must be strong and must be consistent; the tower cannot obstruct the view; and the noise cannot disturb the local residence. Due to the fast growth of the population, it is aggrandizingly difficult to find a suitable place that is proper for a wind turbine yet will not interfere with the people’s everyday life (Srensen et al., 2002).

1. BY DR.SREEREMYA.S
FACULTY OF BIOLOGY

2.  INTRODUCTION
 As people have seen, the giant industrial wind farms, small household
wind turbines, and also everything in between are erecting all over the
places. In 2012, the electricity capacity from the wind power in the total
electric capacity is about 7.2% in EU, 2.0% in China, and 3.6% in US.
Nevertheless, most people agree that wind energy should claim much
greater share of the future energy supply. For eg:-, the United States is
working on an ambitious target of 21% total electricity capacity by 2030.
Indeed, wind energy is one of the fastest growing energy sources today
and also in the foreseeable future. However, findings a suitable site to
build the wind farm or simply set up the wind turbine is not always easy.
The wind must be strong and must be consistent; the tower cannot
obstruct the view; and the noise cannot disturb the local residence. Due to
the fast growth of the population, it is aggrandizingly difficult to find a
suitable place that is proper for a wind turbine yet will not interfere with
the people’s everyday life (Srensen et al., 2002).

3.  On the other hand, wind is stronger and also steadier if one move
upward. Because there is less friction between the air and ground
and there is less obstruction from the ground topologies, the wind
blows faster when the altitude increases. Meanwhile, the total
power carried by the wind is P = 1/2ρAv3, where ρ is the air
density, A is the cross section area of the wind, and the notation v
is the wind speed (Troldborg et al., 2010). Hence, the total wind
energy per unit area grows even faster than the wind speed. For
this particular reason, the typical height of wind turbine towers
increased from about 22 m in the 1980s to around 100 m today.
Correspondingly, the tip of the rotor blades can mainly reach
nearly 200 m high. However, there is the limit on the wind turbine
height (Iungo et al., 2013). The increased energy-flow through the
rotor means the greater force on the tip of the tower, and
correspondingly the greater load on the entire tower structure and
the un- derground foundation. Meanwhile, the aggrandized
height makes it harder to install, repair or simply inspect the
generator, the gearbox, controller, and blades.).

4.  The associated constructing and maintenance cost will significantly
reduce the economic margin steeply achieved by the higher tower and
larger rotor. Recently, many people started to think and assess about
ways of tapping the high altitude wind energy without building the big
wind turbine with a history dating the back several thousands of years,
kites are reported to be the earliest man-made flying objects (Srensen et
al., 2011). First appearing in the Asian and later also in Polynesian
cultures, they have been availed for military purposes, as religious
symbols, for entertainment and also for many other practical applications.
An example that is still in use is the technique of availing kites for shing.
Before the invention of engine-propelled flight at the beginning of the
20th century, there were fundamentally two aircraft types capable of
lifting significant payload, basically high up into the air: balloons,
employing the principle of aerostatic lift, and the kites, employing the
principle of aerodynamic lift. Yet, for many purposes kites were the
superior technology. For example, they could be mainly operated at wind
conditions in which tethered balloons were quiet unusable and,
employing the kinetic energy of wind to mainly generate lift, they were
generally less expensive(Cherubini et al.,2015

5.  In the beginning of the 20th century, many
meteorological stations in the Europe and the US
employed kite trains. These consisted of various kites
arrayed along the tether to perform daily ascends up to
several kilometers altitude. The highest recorded kite
ascent to date is the heritage of these times: in 1919, a
train of eight kites reached an altitude of 9750m at the
meteorological observatory of the Lindenberg. In 1902,
inventor Guglielmo Marconi used a kite-supported
antenna for his first transatlantic wireless transmission
and in 1907, photographer and aviation designer
George Lawrence availed a camera suspended from a
train of kites for aerial documentation of the
devastated San Francisco after the great earthquake
(Burtone et al., 2011). DECLINE OF KITE wind.

6.  APPLICATIONS
 But also the development of the engine- powered aircraft benefited largely from
available kite technology. To investigate the major use of wing warping for flight
control, Orville and Wilbur Wright suspended glider prototypes of their airplane on
tethers and the flight-tested them as the kites. However, the ensuing success of the
airplane marked also the beginning decline in kite applications and, except for very few
military applications in the two world wars, it would take until the end of the century
before the kite would mainly resurface in larger numbers as the water sport device(Goit
et al.,2015). But already before the advent of kite surfing in the late 1990s, during the
1960s energy crisis, Miles Loyd, an engineer of Lawrence Livermore National
Laboratory, proposed to avail tethered aircraft for large-scale wind energy conversion. In
his visionary paper the “Crosswind Kite Power’’ from 1980, he estimates an average
power output of 6.8MW from a tethered aircraft of 576m2 wing surface area in a wind of
10m/s. It took another two decades, until an emerging intguingness in renewable
energies and the major advances in control and simulation triggered a growing interest
in the kites (Munters et al., 2016). RENEWED INTEREST IN KITES At Delft University
of Technology, Wubbo Ockels proposed the Laddermill concept to access the kinetic
energy of high altitude

7.  Journal of Electrical Energy Systems and
Energy Conversion, Kite Turbine for Wind
Energy ,Dr.S.Sreeremya ,2020.Vol 5(1):1-6.
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