Hello,
all.Recently, I got to see something that most of us don't get a
chance to see: a Marine unit employing a very special type of UAV called
the Dragon Eye.
I met the Marines from 3rd Bn 2nd Marines at the 29 Palms Marine
Combat center in Twentynine Palms, California. They were as excited
about the bird as I was to see it, and I can see why. The Marines
use this versatile flyer to scope out the battlespace before they move
in. They can use the Dragon Eye to find the enemy silently and
safely.
The Marines were practicing for an upcoming deployment to Iraq, where
they will use Dragon Eye to gain tactical advantage on an unsure
battleground. This amazing RC plane uses a laptop computer for
programming coordinates and sends back a live video feed. It
maintains contact with the ground station autonomously; if the
connection is lost, the bird returns to its origin and lands itself.
Unlike me, the bird knows how to fly.
The plane is made of Kevlar covered foam, and breaks apart with a
hard-hit. The pieces are reassembled and the plane goes up again.
I've never seen an ARF take so much punishment. Repairs? A square
of Duct tape will do just fine, thanks.
Bungee launched, it gains altitude and airspeed very quickly
(it seemed like about 2 seconds to 200 feet) and is out of sight and out
of mind. You can't see it or hear it, but its up there. The
bird lands on its own, gliding in without power. If a wind gusts
at the last second, Dragon Eye goes full power and circles around for
another try (like you haven't).
It sends back crystal-clear images on the laptop, and also viewable
on a pair of sunglasses-like VR goggles. I was simply amazed at
the quality of the pictures.
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Flight Programming
The UAV is awaiting orders. |
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Hamming it up with the bird
A Marine displays the bird while a couple of burgeoning pilots program the flight. |
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Dragon Eye
No elevator and one hell of a big rudder. |
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Preflight checks
Marines ensure that the trim is set, and all onboard comm systems can talk. |
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About to launch the bird
The Marine toting the other end of the bungee is about 100' away. |
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A little about the bird (from
GlobalSecurity.org):
In 2003, the Marine Corps adopted the Dragon Eye UAV, the smallest
functioning unmanned aerial vehicle, in an effort to minimize friendly
casualties and maximize pre-movement surveillance. The Dragon Eye UAV is
specifically designed to follow a predetermined mission into
questionable areas to deliver a bird's eye view of its surroundings with
two near-real-time video cameras.
With the Dragon Eye, Marines have access to a new sophisticated
reconnaissance tool to allow them to see what's going on further down
the battlefield -- one which fits in a backpack and Marines can take it
with them and use it somewhere else. Dragon Eye is a new robotic aerial
vehicle funded by the Office of Naval Research (ONR), the latest in a
collection of uncomplicated, high-tech, autonomous tools that were being
developed for ground forces.
Dragon Eye's primary mission is reconnaissance and surveillance for
small unit commanders, across the battlefield functions, with an organic
capability to see over the next hill/building, or conduct route
reconnaissance, battle damage assessment, and unit force protection. The
autopilot must provide fully autonomous operation, GPS navigation, air
vehicle stability for imagery, preprogrammed search patterns, inflight
waypoint updates, and interface protocol with the GCS software and
payload sensors.
The Dragon Eye (DE) Interim-Small Unit Remote Scouting System (I-SURSS)
was developed by the Marine Corps Warfighting Laboratory in Quantico,
Va., as a small, fully autonomous, back-able, hand launched UAV to
provide the Marine Corps an “over-the-next-hill, or building” tactical
reconnaissance and surveillance capability.
A Marine on a dangerous reconnaissance mission in unknown or enemy
territory has a problem if he doesn't know what's over the hill in front
of him and the situation doesn't lend itself to sending out scouts. But,
if he can easily launch an instrument that has the radar signature of a
bird, and can get the reconnaissance and surveillance information from
it that he needs, then he's got a terrific advantage. The beauty of the
system is that it allows the Marine immediately to make out not only the
nature and general size and condition of the enemy in front of him, but
their movements, their hardware, the general landscape and the cover
provided. And best of all, it comes back when called.
The Dragon Eye System is intended to provide threat detection and
reconnaissance capabilities to the United States Marine Corps Small
Unit. Dragon Eye consists of a man-portable, multi-role, 2 kilogram,
hand-launched fixed wing air vehicle, and a wearable Ground Control
Station (GCS) to provide control of, and receive intelligence from, the
air vehicle. Dragon Eye is just one solution. And it has proven to be
very useful for its particular niche.
Dragon Eye is a five-pound modular UAV system capable of fully
autonomous flight. Made of lightweight material, the UAV is designed to
disassemble into five separate pieces and be back-packable by individual
Marines. Dragon Eye is solely composed of fiberglass and Kevlar. It
breaks down into five pieces for easy transport including a fuselage, a
tail, a nose and two wings. The Dragon Eye is primarily used in missions
to take pictures of supposed improvised explosive device strips and
bunkers on buildings invisible from the ground. The air vehicle’s
battery provide up to 60 minutes of flight time, and the aircraft has a
flight weight approximating 5 pounds.
Propeller-driven, Dragon Eye comes packed with a video camera. It is
assembled and launched by a two man team in approximately 10 minutes
though possibly less than five minutes, and comes complete with a
portable control station. This UAV can reach speeds of 35
miles-per-hour, altitudes of 1,000 feet and distances of 10 kilometers.
It weighs approximately six pounds fully assembled and spans
wing-to-wing at three feet. Its maximum endurance rate is approximately
60 minutes, while 45 minutes is nominal. Dragon Eye’s operating altitude
was originally believed to be between 300 and 500 feet above ground
level, with a video link range in excess of 5 kilometers.
The aircraft is programmed via a seven pound rugged-ized handheld
computer which is capable of flight planning, flight monitoring, and
storage of air vehicle transmitted video. The aircraft’s flight profile
is GPS waypoint guided, each waypoint allowing for various linear, and
orbiting search patterns and altitudes. Missions are programmed via a
wireless modem that is integrated into a small, lightweight ground
control station. After bungee launch, Dragon Eye flies to pre-assigned
GPS waypoints but the aircraft’s flight profile has the ability to be
reprogrammed in flight.
The Marine uses a wearable ground control station with a computer
processor and a map display that is located on his forearm or attached
to his vest. By clicking on the moving map display, he tells the bird
how high and where to fly, and programs when he wants it to return. A
video stream comes back to a monitor contained in the wearable ground
station. Lithium batteries allow for 60 minutes of flight time at a
speed of about 45 mph. It has about a 10-kilometer range, and could,
theoretically, be passed from one Marine to the next to extend this
range if batteries are replaced.
Proper operation of the system takes a two-man team - one man to
assemble the aircraft and one man to get the ground control station up
and running. The GCS - a computer system designed to control and operate
the aircraft from the ground - is a touch screen, laptop computer with
wireless satellite connections, which sends signals to the plane. The
operator can view the video through a pair of goggles connected to the
GCS. There are three interchangeable nose cameras including one for
low-light situations such as dusk and dawn, one for regular daylight and
an infrared nose used for night launches. One camera is mounted inside
the nose of the plane and a second is located on the left side. While
the nose camera can move any direction, the left camera can only point
straight, but delivers an eight-digit grid at the center point of the
video. Its small size and aerodynamic design allow it to be a hard
target while executing a mission.
The aircraft’s payloads are capable of real-time high resolution day
color, and low light black/white imagining. Dragon Eye’s electric motors
provide an extremely low noise signature, and the small wingspan make it
very difficult to detect.
The UAV sensors include full motion color, low light, and in the
future other sensors such as infrared cameras in interchangeable payload
noses. The system is capable of transmitting sensor and air vehicle
telemetry data line-of-sight (LOS) to a range of ten kilometers. Dragon
Eye flies up to speeds of 35 mph and has a battery endurance of almost
one hour. The system is based on an evolutionary acquisition strategy
which plans performance improvements in future block upgrades. The
autopilot must weigh less than 4 ounces. The GCS software must run on
the current DE Ground Control Station, which uses the Panasonic
Toughbook 34 laptop computer with windows 2000 operating system.
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