Question Answer Section
Gerald Glasser, Dreamland Robotics, Wed 4/02/08
For the Data Recorder: Do we know the net force on the box ( Fb - Mg ). I have re-read the rules and did not find it. That can/will make a big difference in design if we do not know the "range" of the lift required.
Answer by Fredi Lajvardi
It as a downward force of 38 Newtons in air. It is weighted so that it is negatively buoyant in water, just under the neutral side.
Kandi Romero, WISE, Wed 3/19/08 1:50 PM
If we use two robots for the competition does that mean the count times 2 for the power requirements?
Answer by Fredi Lajvardi
You can have as many ROVs as you want. You are limited by the overall power limit of 1700 Watts and the upper limit voltage and current listed in the rules. Your total number of Robots power limit should not exceed 1700 Watts combined.
Kandi Romero, WISE, Tue 1/29/08
What is the spacing between the vials (glowsticks)?
Answer by Fredi Lajvardi
1 1/2 to 3 1/2 inches, or 3.82cm to 8.89cm depending on their orientation, they will be able to rotate freely if bumped
Kandi Romero, WISE, Tue 1/29/08
What are the glow sticks stuck into, i.e., is it a piece of styrofoam? What is the material made of so that we know how much force our arm will need to pull them out .
Answer by Fredi Lajvardi
There is a hole that they will slip into and they they will be weighted to sit in the hole without floating out. They will be slightly negatively buoyant. There will be no other form of attachment, so they should be able to slip out.
Frances, Blue Tide, Mon 4/14/08 7:42 PM
Our team, the Blue Tide, is registered for the upcoming Underwater Robotics Competition. I am working on the temperature probe and was wondering if we need to measure the temperature in the hole where the serum vial is removed from or just in that area?
Answer by Fredi Lajvardi
It will be the area next to it. There will be a marked off area that we will show you prior to the mission so you will know where to be.
rene valenzuela, Embry Riddle, Mon 4/14/08 1:40 PM
Answer by Allan Cameron
Volume: 75 db at a distance of 1 meter in the air. Submerged will affect the volume, but this should be a good ballpark figure
More Code, standard International Morse, Farnsworth spacing, 5 words per minute.
Gerald Glasser, Deamland Robotics, Sun 4/27/08 6:01 PM
Will Power Point
equip. be available for the tech presentation or should we bring our own. And ,
can we set it up. Other teams may use our system also if they are not so
equipped.
Answer by Fredi Lajvardi
You will need to bring your own power point equipment.
rene valenzuela, Embry Riddle, thu 5/08/08 6:53 PM
For the temperature we have to measure in the case, do we have to measure it underwater, or could we bring the case up to the surface and measure it there? Also how much guessing is allowed? If we can't bring up the case, we plan on using two thermometers, each set at a different starting temp and see where they converge.
Answer by Fredi Lajvardi
The case will be attached to the seat on the plane. You will not be able to
bring it up. I am not sure about how to answer the guessing question...you have
to show how you know what the temperature is. Try this link for thermometer,
http://www.extech.com/instrument/products/310_399/39240.html
To the question of your video problem. Yes we use Supercircuits. The quality of
the image is dependant on several factors. One is interference with control line
of the ROV. This can be tested by shutting down all system except video. The
other is the lux rating of the camera, The lower the lux rating the darker the
environment can be and the picture quality will still remain good. This can be
tested by adding more light to the environment. Another factor can be the
quality of the camera you purchased, what is the resolution of the camera?
Hope this helps
Ruy
Garcia-Acosta, Thu 5/29/08 3:02 PM
I have a question. On the place where we have to measure the depth, is the measurement of the plane on the mark?
Answer by Fredi Lajvardi
There will be a mark that is movable up and down by about two to three feet, so it can vary between teams. It will be on the side of the opening of the plane and will be of a bright color so you can see it.