STARTING WITH THE BUZZ AROUND THE GLOBE:-
1.World’s first sonic tractor beam moves objects using sound waves.
Tractor beams—a term coined by sci-fi author E. E.
Smith—have been brought to life by researchers at University
of Bristol and Sussex, in collaboration with a company
called UltraHaptics. Together, they have developed
the world’s first sonic tractor beam that can not only lift
but also move objects in thin air using sound waves.
The tractor beam makes use of high-amplitude sound
waves to create an acoustic hologram that can pick up
and move small objects. Not only does the technique
manipulate objects suspended in air, these also defy
gravity. These control several dozen loudspeakers
individually so that an acoustic hologram is created to
manipulate different objects in real-time without any
physical contact.
The researchers used 64 tiny loudspeakers that created
high-intensity, high-pitch sound waves. The tractor beam
surrounded the object that had a high-intensity sound and
therefore created a force field that held the object in its
place. By controlling sound waves, the team could rotate,
move or hold the object almost instantly.
The team has demonstrated three different types of
acoustic force fields that can work as tractor beams,
which include an acoustic force field that looks just like
a pair of fingers or tweezers, an acoustic vortex where
objects are stuck-in and trapped at the core and a highintensity
cage that envelopes an object and holds it in
place from all directions.
2.Scientists develop world’s first 3D blood vessel bio-printer.
A Chinese company has developed the world’s first 3D
blood vessel bio-printer, which makes it possible to produce
personalised functional organs.
According to biotechnological company Sichuan
Revotek Co. Ltd, based in Sichuan Province, the
breakthrough has been achieved through its selfdeveloped
stem cell bio-ink technology, 3D bio-printer
and cloud computing platform.
James Kang, who led the programme, said that
blood vessels that transport nutrients to organs are
indispensable elements when creating any organs. His
team created a novel type of bio-ink—Biosynsphere—
whose primary goal is the personalised stem cell bioprinting
to pave the way for organ regeneration.
3.Wearable sensors could translate sign language into English.
Engineers at Texas A&M University, USA, are
developing a wearable device that can sense movement
and muscle activity in a person’s arms. It works by
figuring out the gestures a person is making by using
two distinct sensors: one that responds to the motion
of the wrist and the other to the muscular movements
in the arm. A program then wirelessly receives this
information and converts the data into English.
* AS PER ARTICLE IN EFY
TECHNOLOGY AT WORK:-
NAVIGATION IN AIRCRAFT CARRIER:- TACAN
In the sea, even gigantic carriers appear smaller than a dot for their aircraft flying at
heights greater than 10km. At those heights, visually sighting the carrier becomes impossible.
To retrieve the launched aircraft, the carrier must reveal its position to the incoming
aircraft. The carrier does this through a system called TACtical Air Navigation (TACAN).
1.World’s first sonic tractor beam moves objects using sound waves.
Tractor beams—a term coined by sci-fi author E. E.
Smith—have been brought to life by researchers at University
of Bristol and Sussex, in collaboration with a company
called UltraHaptics. Together, they have developed
the world’s first sonic tractor beam that can not only lift
but also move objects in thin air using sound waves.
The tractor beam makes use of high-amplitude sound
waves to create an acoustic hologram that can pick up
and move small objects. Not only does the technique
manipulate objects suspended in air, these also defy
gravity. These control several dozen loudspeakers
individually so that an acoustic hologram is created to
manipulate different objects in real-time without any
physical contact.
The researchers used 64 tiny loudspeakers that created
high-intensity, high-pitch sound waves. The tractor beam
surrounded the object that had a high-intensity sound and
therefore created a force field that held the object in its
place. By controlling sound waves, the team could rotate,
move or hold the object almost instantly.
The team has demonstrated three different types of
acoustic force fields that can work as tractor beams,
which include an acoustic force field that looks just like
a pair of fingers or tweezers, an acoustic vortex where
objects are stuck-in and trapped at the core and a highintensity
cage that envelopes an object and holds it in
place from all directions.
2.Scientists develop world’s first 3D blood vessel bio-printer.
A Chinese company has developed the world’s first 3D
blood vessel bio-printer, which makes it possible to produce
personalised functional organs.
According to biotechnological company Sichuan
Revotek Co. Ltd, based in Sichuan Province, the
breakthrough has been achieved through its selfdeveloped
stem cell bio-ink technology, 3D bio-printer
and cloud computing platform.
James Kang, who led the programme, said that
blood vessels that transport nutrients to organs are
indispensable elements when creating any organs. His
team created a novel type of bio-ink—Biosynsphere—
whose primary goal is the personalised stem cell bioprinting
to pave the way for organ regeneration.
3.Wearable sensors could translate sign language into English.
Engineers at Texas A&M University, USA, are
developing a wearable device that can sense movement
and muscle activity in a person’s arms. It works by
figuring out the gestures a person is making by using
two distinct sensors: one that responds to the motion
of the wrist and the other to the muscular movements
in the arm. A program then wirelessly receives this
information and converts the data into English.
* AS PER ARTICLE IN EFY
TECHNOLOGY AT WORK:-
NAVIGATION IN AIRCRAFT CARRIER:- TACAN
In the sea, even gigantic carriers appear smaller than a dot for their aircraft flying at
heights greater than 10km. At those heights, visually sighting the carrier becomes impossible.
To retrieve the launched aircraft, the carrier must reveal its position to the incoming
aircraft. The carrier does this through a system called TACtical Air Navigation (TACAN).
Tactical Air Navigation, or TACAN,
is a navigation system used by military aircraft. It provides
the user with a distance and bearing from a ground station. It is a more
accurate version of the VHF omni-directional range / Distance
Measuring Equipment (VOR-DME) system that provides range and bearing information for
civil aviation.
as per wiki.flightgear.org
TACAN. Through a TACAN transponder the carrier continuously relays its identity
in Morse code at a particular frequency.Through appropriate antenna arrangement,
it maintains a cardioid radiation pattern for this transmission. Aircraft can receive these
signals by tuning their TACAN receivers.For this, aircraft’s TACAN receiver interrogates
the carrier’s TACAN transponder with an interrogate pulse. The TACAN
transponder receives that and, after a delay of 50μs, sends a reply signal. Aircraft’s TACAN
receiver receives this reply. Then, by knowing the time at which the receiver had
sent the interrogating pulse and the time it received the reply, it calculates the roundtrip
distance time. This time minus the 50μs delay is the actual round-trip distance time.
With the speed of the radio waves known,range is calculated, which is the
crow-flight distance.
Direction and range are displayed in the aircraft’s moving map display as
waypoints and also as pointers in the pilot’s head-up display (HUD) .
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