For
fast movement of the drones are based on the wing movement of the birds.
researches are trying to implore the capabilities of the birds that can be
implemented in real life scenario. The drones are being improvised for better
efficiency and movement in real environment.
The
nature is an awesome place for inspiration for discoveries and inventions for
many things that is existing in this world. Take an example of the aeroplane.
It was inspired by the birds flocking in the air. And there are millions of
examples in day to day life.
The
recent research on drones is based on one of the findings of the nature. Few
birds want their territories defined. They ensure that no other bird would
occupy their territory. Sometimes there are fights between the two flocks. One
such incident inspired the researches. The swallow fight noticed by the
researchers was near the cliff regions. The manoeuvring of the birds were swift
and reflex. They deep dived in the air with the force ranging up to 7.8-g. This
is much larger than the roller coaster itself, whose highest gravitational
force( called as "g force") is in South Africa having 6.3g. The
swallows performed various turns which were extreme in nature much to the
incapability of the human pilot.
So
researchers wanted to build a drone which could perform the same moves as that
of the swallows. The researchers placed the high speed camera which could
capture about 100 frames per second. The cameracaptured
the movements of the wing at each angle when it was performing the manoeuvre.
The feather movement, its wing direction, its body direction along with the
movement of the tail was noted down. Even the wind direction and its speed was
noted down for better analysis.
After
this study they found out many important facts. Every feather is used as an
aero¬dynamic sensor. When the wind pushes against these sensors, they send
nerve signals to the brain and trigger reflexive movements. Each gust is like a
finger prick that causes birds to instinctively contort their wing shape, which
is known as actuation, to relieve the strain.
So
the researches are trying to figure out the basic principles of the swallow to
be implemented in the drones. They recreated the wings of the bird using
synthetic materials and attached it as an appendages of the drones. The drones
are then tested to take advantage of the course of the wind to minimise the
fuel factor and increase the efficiency.
Push
broom studio is one such example. The computer program uses two small cameras
on a drone to scan the space about five meters in front of the drone. When an obstacle appears, push broom
temporarily remembers the object's position so the drone can evade it. Initial
flights were manually piloted, but researchers are confident that the system
could autonomously avoid the obstacles, as well. Once past, its memory banks
forget the obstacle. This amnesia means that engineers can use smaller
computers for piloting, which translates into smaller drones.
So
almost all the future drones will be on this concept. The drones will be able
to dodge any obstacle, move between the two posts, calculate the distance and
will be able to pass through narrow passages. In future it will involve a mix
of all fields from mathematics, physics, material science to name a few.
The
scientists are doing research on how the birds are able to migrate in large
numbers to particular areas during winters in their part. Extensive research
has to be done to replicate the same in our world to know the weather patterns
and climatic effect on large scale. If it becomes a success then we might be
able to unleash many secrets of nature still hidden behind.
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