TEDxDaedeokValley - SamOk Koo - Smart UAV success and sky travel dreams


Uploaded by TEDxTalks on 17.11.2012

Transcript:
Hello! More than a year has passed since my presentation last year but I feel still awkward with the video.
You know one year cannot make a poor speaker to become a fluent one, don't you?
Last year I talked a dreaming way towards future aircraft
by utilizing autonomous flying technology of
unmanned aircraft system(UAS).
Today I am going to show you some progress
since then from our UAS development program.
For those who are not much aware of unmanned aircraft system, let me firstly explain it very briefly.
An aircraft is in the air
and control station and equipments are on the ground, tele-communication equipments are both on the ground and on the aircraft to make a radio link between the aircraft and control station.
In the ground control station,
a set of computers and monitors are there to show
the status and location of the unmanned aircraft.
Can you see the complexity of the aircraft ?
I hope you cannot read the small letters (laughter...).
It was just meant to show you the complexity of the aircraft. We designed and developed necessary technology indigenously.
On the complex aircraft only the gas turbine engine and
a few commercially-off-the-shelf parts are purchased from overseas.
a few commercially-off-the-shelf parts are purchased from overseas.
Technology transfer is highly restricted
for those items related to unmanned aircraft,
because they are a nation's strategic technology.
because they are a nation's strategic technology.
Such restrictions give very good and challenging opportunities
to the engineers and researchers.
That special aircraft, as you could see from the video,
takes off like a helicopter and should transform to an airplane.
We've done very hard process of tests such as tethered under a tower crane at the beginning,
followed by helicopter mode flying and transformation.
Finally it flies like an airplane.
Do you know the difference between the words airplane and aircraft?
Airplane has a fixed wing,
propulsion system,
heavier than air, and get lift by the dynamic reaction of air.
That's why a hot-air balloon
and a helicopter are not called as airplanes.
Aircraft is representing all the flying machines in the air.
Tilt-rotor aircraft is a helicopter when it takes off and lands,
but it transforms to an airplane after conversion process.
You can see it from the flight test video.
You can see it from the flight test video.
Since its maiden flight on Feb. 23, 2011 we had been trapped for some 5 months only in helicopter mode.
We expected the conversion process,
which has been seemed to be a black box,
would be very difficult
even though we had already tested the process successfully with a sub-scale model in 2008.
But the simpler-would-be process drove us tough.
A typical phenomenon was a crab-like flying (a side-slip in engineering words).
It never flew straight for such a long time.
It reminded us a joke about golf : the similarity of golf ball and kid is that
we wish them go to the right direction.
We invested 2 more months for curing that problem.
On a fine day in September, after we resolved the side-slip problem, we could go through the conversion process in one sortie of test.
We have expanded the test envelope since then
and finally in December we got to the point of 440km/h speed that is the maximum trial speed for our test vehicle.
Now it's the fastest unmanned vehicle which can takeoff and land vertically.
Let's watch the video. We edited it in a short cut.
It lifts off vertically.
It's a 1-ton of weight vehicle.
Two crews operate it to fly autonomously with simple touches of touch-screen buttons.
It looks simple but very sweating job in our development program,
but it would be just a quick, simple process of developing a future aircraft in which anybody can fly without difficulty.
Do you see the propellers gradually tilted forward?
Small windows to the right and lower right show you the pilot's screens.
Now it's transformed to an airplane.
The aircraft is approaching to land.
You can see the onboard camera looking down a target on the ground.
You can get Infra Red or Color TV images,
night or day, so we can use it to various purposes.
night or day, so we can use it to various purposes.
Next technology to show you is...to avoid the most fearful situation of all flying things,
how to avoid another aircraft in the air when encountered accidentally.
Could you (in the video) see another traffic just passing by when it made an abrupt maneuver?
Aircrafts are not supposed to encounter in the same altitudes by regulations.
However, such close encounters would be perhaps very common in the future
when aircrafts are flying busy in the air as cars are on the roads today.
So we have to prevent collision of aircrafts in the air.
That's why we have developed such kind of sense-and-avoid technology.
The last slide of my presentation is the same dream picture I showed last year.
I hope next generation engineers and younger audiences here should complete the technology of future aircraft.
When that time come true, perhaps we will see such a scene
every morning in the sky over a populated town. They are flying to work.
My dream is : all those birds in this picture be aircrafts.
Thank you.