Nova Wing for Video Ray

Discussion space for posts that don't fit into the other categories, such as issues with VideoRay products, or general ROV tips.

Nova Wing for Video Ray

Postby jmyers » Sun Mar 05, 2006 11:09 pm

Installing the Nova Ray performance fin was easy and quick. It took the place of the existing VideoRay float. The vertical thruster propeller was exchanged with a worm drive that operated the altitude fin on the back or the Nova Ray fin. The fin provided almost 2 lbs of buoyancy more than the VideoRay float so more lead was needed to keep the ROV neutrally buoyant.

Since no river with a current was available, we towed the VideoRay ROV with the Nova Ray fin in Lake Washington to simulate a 3 to 4 knott current. The ROV was stable and was able to be towed between 35ft (with 50ft of cable) and 95ft (with 230ft of cable). Under its own power it was able to descend deeper. While being towed, the ROV was able to travel up to 20 degrees off of the boats heading before returning to the boats original heading. The ROV maintained a smooth and stable ride.

Under its own power, the ROV with the Nova Ray fin provided a smooth and stable video. It was difficult to maintain a constant depth unless it was moving forward. The vertical thruster propeller was removed to operate the altitude fin. Therefore forward motion or a current is needed to dive, rise or maintain depth. In an attemp to gain further insite to the functionality of the Nova Wing, my partner and I took a road trip down to Portland Oregon to attempt a river trial in the Willamette River where we conduct normal ROV operations each year. Due to a high tide and lack of rain fall the river was not running at a current fast enough to utilize the wing properly.

The most effective use of the Nova Ray fin would help in keeping the ROV steady in a boat tow with a side-scanning sonar. This would allow for a good survey platform that can go and investigate any abnormalities without dropping any other gear in the water.

The ROV with the Nova Ray fin could be used to inspect the bottom of a barge or boat in a current. The ROV thrusters would have to be powerful enough to overtake the current. Or if running with the current, the tether could be repositioned to keep the ROV facing forward.

The Nova Ray fin could be modified to allow the forward camera to pan up for better visibility.
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Nova Wing for Video Ray

Postby underwater » Fri May 19, 2006 10:31 pm

Jon, can you post some pictures? Sure would like to see that wing mounted.
Thanks
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Nova Ray

Postby Jonny » Tue Jul 24, 2007 4:05 am

Her you have a picture of the Nova fin

Image
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Re: Nova Wing for Video Ray

Postby rovexchange » Mon Oct 15, 2007 3:13 pm

Here is a pic from Imbros in AU. Their custom cage is pretty neat.

Image

Please check out http://www.rovexchange.com/microwing for more information
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