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Why Wings for True Axis Flight®?
The winged Nova Ray® ROV design solves long-time industry
struggles with cable drag in strong currents. The patented
wing design eliminates the phenomenon known as "Dutch
Roll Instability" by incorporating the "Arcuate"
form wing with a rudder.
The bow-shaped wing of the Nova Ray® ROV counteracts
the lifting force of the umbilical or tether. Therefore,
the speed of the boat or current will have little effect
on the operational stability of the Nova Ray® ROV. The
wing increases cable use efficiency and reduce the amount
of cable necessary to operate or tow at depth. At the same
time, it creates a remarkable stability ROV.
Under thruster power, the wing operates just as a high
winged airplane would in free flight. Under tow, the arcuate
wing, combined with the seamless shift in the center of
rotation from the cable pull, produces a stable configuration.
Read more at Technology.
What kind of Umbilical is used?
The Nova Ray uses an umbilical for precision
sending and receiving of communications between the ROV
and the pilot Control Console, and for sending power to
the vehicle.
- Standard: 12 conductor umbilical, neutrally buoyant.
- Standard Length: 300 ft. umbilical (longer lengths available)
Fiber Optics: Option available at additional cost and delivery
time.
Where is the Umbilical attached and why this location?
There are two umbilical attachment points. The primary
one is located at the top of the hull just forward of center
of mass. A second attachment point is placed well forward
of center of mass, and serves as a secondary connection
in the event of unusual stress. When using the second attachment
only, the ROV can continue to operate at reduced depth or
return to the surface for a replacement link (recommended
approach).
What are the advantages of Dual Mode operation?
Underwater conditions are continually challenging. Thrusters
can be used to visually inspect a target located while towing,
without having to launch additional equipment. Having both
options allows for the ability to work in adverse conditions
and environments more efficiently, saving time and money.
What size Thrusters are used and what is the rated horsepower?
The Nova Ray® is designed with thrusters to operate
in strong currents with minimum and maximum power ranges.
- Standard: two, ¼ hp thrusters, variable DC power.
Option: Increased horsepower for enhanced project needs.
How many Knots can be achieved under Thruster power and
under Tow?
- 4 ½ knots under thruster power, and with 1/3
hp up to 6 knots.
Up to 9 knots under tow with deeper operation and less
cable than other Underwater Towed Vehicles (UTV).
What kind of Navigational Software is used?
Coral Partners, LLC. developed its own proprietary
Command and Control software. This was a necessary and important
step for Nova Ray® performance specifications. Its unique
design and the challenging demands for performance in adverse
conditions required an equally robust Command and Control
software system. Navigational systems are available from
several companies, and can be integrated into the Nova Ray®
system, and work in conjunction with the vehicle's Command
and Control software.
How does the Command and Control system work?
The ROV pilot has up to four auto pilot modes:
- Wings Level
- Heading Hold
- Depth Hold
- Altitude Hold (optional altimeter purchase)
The Nova Rayâ has sophisticated software, engineered
to compensate for deviations to course, depth and wing attitude.
This enables the operator to multi-task and concentrate
on specific project demands. To make control changes, the
operator simply moves the joy stick or slides the thrust
control.
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