| The dual rotor helicopter | - 2 Rotor Helicopter |
|
The dual rotor helicopter at the Harris stand at DSEi 2007 |
|||||||
- from http://www.modelhelicopters.co.uk/acatalog/info_8965.html
Hirobo has modified the bird with a new main frame design, larger tank,
additional body style (CH-47 Chinook - item number 0406904), and updated heads
and swashplates. Controls are now electronically mixed via Hirobo designed
control system included with the kit. A 3 axis gyro is also included. No more
complicated mechanical control system. The starting system is changed to the
shaft type like that of the Sceadu and Freya series. It is setup for a 50 size
motor to carry the weight, and
17 September 2007
Flight International
- from
http://www.flightglobal.com/news/articles/dragonfly-pictures-unveils-tandem-rotor-dp-6-uav-216798/
Harris Corporation and
Dragonfly Pictures
have unveiled proposals for a wide-area surveillance network using a combination
of ground-based sensors and the latter's DP-6 " Whisper" tandem-rotor unmanned
air vehicle, with the system being pitched for border surveillance and area
denial missions in the Middle East.
Dragonfly Pictures president Michael Piasecki says the electric-powered DP-6
would effectively be used as a " bird dog" in the proposed architecture.
© Dragonfly Pictures
The vertical take-off and landing UAV would be deployed in a cradle system
fitted to either the roof of a command-and-control shelter for the network, or
on a ground vehicle. This would contain electric couplings to charge the UAV's
batteries and provide constant data on the status and condition of the sensor
network, allowing automatic deployment as intruders are detected.
Once launched, the UAV would fly at speed to an alert area, before descending to
low altitude to capture imagery at slant angles as low as 30deg to positively
identify an intruder with its high-definition TV sensor. The system is intended
to ensure persons detected can be captured, rather than killed, Piasecki says.
The DP-6 is capable of flying to within 500ft (150m) of a human without being
detected, says Piasecki, who unveiled the new design at the DSEi show.
This will enable operators to identify an individual and gather data on their
intent, he says, rather than the restricted identification opportunities
provided using current fixed-wing UAVs, which are largely limited to overflight
during surveillance operations.
© Dragonfly Pictures
Piasecki says the developmental DP-6 design stems from a combination of work
undertaken in conjunction with the
US Defense Advanced Research Projects Agency
and a company-funded effort. Several demonstrators are flying, with one of these
already having accumulated 50h in the air. Two aircraft have already been sold
to an undisclosed US defence contractor, he reveals.
|
|||||||
