Question Answer Section

E-mailed questions will be posted here with the answers.
Send Questions to lajvardi@h2orobots.org

 

11-27-06 Jerry Glasser

Q: Is the torpedo made of a ferrous material? Is the U-bolt also ferrous? Is the carabineer on the Torpedo Recovery Device (TRD) ferrous?

11-27 Fredi Lajvardi

A: The torpedo shell is made of ABS plastic used in irrigation and available at Home Depot. The U-bolt is ferrous. The carabineer is aluminum. There are mounts being designed for the Torpedo Recovery Device and the modified design will posted as soon as possible. The Torpedo's flashing detonation indicator, and detonation switch are now complete and will be posted soon as well. We will also show a video of what the detonation looks like in the pool in the dark.

 4-7-07kmander5@asu.edu

Q: 1) Are we required to use the TRD?  If so, once the torpedo is at the surface, are we penalized if we detonate it taking it out of the water?

A: 1. yes, you must use the TRD to bring the torpedo to the surface. The torpedo must not be detonated until it is put into the detonation chamber. (basically it will be a box of some sort)

Q: 2) When our bot comes to the surface (after retrieving objects) are we allowed to manually adjust anything on our bot (for example, fix a camera angle, add some foam for buoyancy, etc)?
 

A: 2. Yes you may adjust anything you want, its your half hour!

5-23-07 Tom Heller

Q: What are each of the plaques and ID
cards made of (ferrous, Aluminum, plastic, etc)?  And what are their
approximate masses?  Thanks.

A: They are both made of Lexan , 16.66 oz or  469 grams  ( in air) for the Commemorative Plaque, Dim 11 x 11 x 1/4

1.59 oz or 45.1 (in air) grams for the sub ID tag, Dim 3 x 3 x 1/4
 

4-22-07 Corina Smith

Q: I have a 7.2V battery connected to the control system, a 24V battery connected to the grabberm, and a 12V battery connected to the rest of the ccmpontents. So when calculating the overall power of the bot do I calculate the powers individually and add them up?? Having so many batteries is throwing me off. I appreciate your help.
 
Thank you,
 
Corina Smith

 

A: Yes multiply the voltage and current draw of each and add them up. One thing that will help is to use a fuse for each system to show the judges what the current draw limit is. The fuses ensure the power limit. Add up the fuses and the multiply by system voltage to get watts.