From: David Scheel [mailto:dscheel@alaskapacific.edu] Sent: Tuesday, September 04, 2001 1:36 PM To: douglasj@email.arizona.edu; Paddy; Tye; Adele Lauster Subject: RE: Shadow project Good to hear from you Douglas. I've put your team up on the Shadow Project web page at http://marine.alaskapacific.edu/octopus/shadow.html by accessing the "Teams" link. Most of the design constraints and details are in the NSF proposal (see attached). Specifically for your team, Dr. Vincent proposed that: The AUV to be constructed under this proposal will be based on many of the Shadow II design features and will be designed to satisfy the following requirements: · Operate depth up to 30m. · Underwater operation for periods of time up to 3 days (Actual duration will be a function of target activity). · Self-propelled with a maximum underwater speed of approximately 7 m/s. · Able to turn about it’s own axis at zero forward speed. · Autonomous in the sense of being able to track a signal generated by a sensor (sensors are not a part of this proposal). · Able to maintain a specified orientation with respect to a stationary target (as located by a sensor) for extended periods of time. · Able to return to the surface when batteries get low. · The AUV will have sufficient cargo capacity for a video camera, extra electronics to run the camera, and batteries for the camera and external lights. (None of the cargo components are a part of this proposal) It is anticipated that the new AUV (Shadow III) will resemble Shadow II in size and shape. The specifications of Shadow II are: · Main Body Diameter. = 10" · Overall Length = 34" · Max. Height = 17" · Max. Width = 22" · Dry Weight = 95 lbs · Space allotted for camera = front hemisphere = 449 cubic inches · Top speed = 4 mph Note that in the proposal we also anticipated placing a rudimentary bottom avoidance system on board in which a series of sonic pingers might deliminate an "all clear" zone or mark conspicous obstacles for the system, which would otherwise simply follow the target signal in a straight line. I am not sure whether the Control team (CSM) or the Power team (you guys) deal with that issue. At the very least, we hope to have the system ready for pool tests by the end of the school year. From what I have heard, the Drs. Vincent intend to speed this up a bit - Tom has been talking about field trials that summer, implying pool tests successfully completed by then. You will also be working with my team on interfacing a video camera system to the Shadow's power and control systems. Cheers, David David Scheel Alaska Pacific University e-mail: dscheel@alaskapacific.edu On the web at http://marine.alaskapacific.edu/ ~~~~~~~~~~~ Assistant Professor of Marine Biology Environmental Science Department 4101 University Drive Anchorage, AK 99508 Phone: (907) 564-8318 ~~~~~~~~~~~ -----Original Message----- From: douglasj@email.arizona.edu [mailto:douglasj@email.arizona.edu] Sent: Thursday, August 30, 2001 10:43 AM To: dscheel@alaskapacific.edu Subject: Shadow project Dr. Sheel; Greetings from Tucson... The Shadow team for the University of Arizona has assembled and is ready to start working. We have contacted Dr. Vincent from the Colorado School of Mines in order to develope a plan for the year that we will submit to you in the near future. Our Dr. Vincent (from Tucson) has unfortunatly gone on a trip for about two weeks and although we reviewed much of what the past two teams has done, we did not have much time to discuss the details of what you wanted to acheive for this year. In addition, we would like a set of design constraints and goals from you. We look forward to working with you this year, Jason Douglas Here's a list of our team members and emails: Jason Douglas douglasj@u.arizona.edu (for now I'll be the contact person) Keithe Chartier chartiek@msn.com Tom Lind lindt@u.arizona.edu Daniel Wilason wilsondw@uswest.net Josh Carnagie joshuac@u.arizona.edu