Marking Period 3: Systems Engineering II Formal Progress Update

 

Arthur Eng
Cuttrell’s Cutthroats	Kevin Guadagno & Joseph Russell
Marine Academy of Science & Technology
Systems Engineering II	Mr. Cuttrell & Ms. Green
Remotely Operated Vehicle	Vehicle Structure

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Vehicle Structure Design Brief

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Vehicle Structure Solution

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Orthographic Side

Orthographic Top

Orthographic Front

Model




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Questions or Comments




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MP3 Log

Tuesday, February 1st, 2011
mark up aluminum.

Wednesday, February 2, 2011
review construction stage with Ms. Green. need to add parts list. construction procedures for each component. assembly procedures for the vehicle structure. installation procedure for each component of the system. double check measurements of aluminum.

Thursday, February 3, 2011
absent for an indoor track meet

Friday, February 4, 2011
re-outline the aluminum to account for the thickness of the material when bending.

Monday, February 7, 2011
absent

Tuesday, February 8, 2011
absent

Wednesday, February 9, 2011
absent

Thursday, February 10, 2011
review assignments for MP3, update calendar

Friday, February 11, 2011
update calendar onto blog, try to fix lines, but can't align properly

Monday, February, 14, 2011
started to fix the lines with the help of meters sticks and an adjustable compass

Tuesday, February 15, 2011
finished the perimeter outline of the aluminum. helped Kevin cut out his piece of aluminum.

Wednesday, February 16, 2011
revised the markup of the bends.

Thursday, February 17, 2011
completed marking up the hull

Tuesday, February 22, 2011
worked on the exhibit poster

Wednesday, February 23, 2011
contacted Mr. Francolini about cutting services for aluminum. continued to work on the presentation.

Thursday, February 24, 2011
absent (field trip)

Friday, February 25, 2011
looked for waterjet shops. contacted two shops for quotes.

Monday, February 28, 2011
contacted Waterjet NJ. made a cad file for them for the pattern. emailed them the CAD file

Tuesday, March 1, 2011
edited the cad file.

Wednesday, March 2, 2011checked me email and replied to them asking about the issue that would arise from having multiple bends on one plane. called Christian to get an understanding of the problem. called H&L fabricators. said it might be possible. worked on writing up a fax. hopefully mike rubens delivers it to him or i will need my dad to fax it over.

Thursday, March 3, 2011
called H&L to see if they received my paperwork - they didn't. edited the CAD file to divide into two pieces with correct dimensioning. scheduled an appointment with WaterJet NJ.

Friday, March 4, 2011
called H&L. they received my paperwork. he wants me to cut it into 2 pieces. scheduled an appointment for Monday in the afternoon.

Saturday, March 5, 2011
went to WaterJet NJ. encountered some problems with the CAD file. eventually got the aluminum cut. did a mockup with mock bend, and then cut the actual 2 pieces.

Monday, March 7, 2011
went to H&L. had the two pieces bent. arrived back at school to take pictures of the completed project.

Tuesday, March 8, 2011
ordered the HDPE.

Wednesday, March 9, 2011

Thursday, March 10, 2011
absent - college visit

Friday, March 11, 2011
absent - college visit

Monday, March 14, 2011
absent - sick

Tuesday, March 15, 2011
deliver the HDPE. discuss the band saw's ability to cut HDPE with Mr. Cuttrell. help Kevin cut the HDPE. mark up my part.

Wednesday, March 16, 2011
absent - (left early)

Thursday, March 17, 2011
absent - sick

Friday, March 18, 2011
cut the HDPE

Monday, March 21, 2011
write up report for Ms. Green & Mr. Cuttrell regarding progress of construction. met up with them to discuss the progress. compiled the mentor contacts.

Tuesday, March 22, 2011
submit mentor contacts. finish marking up the HDPE for Kevin to cut.

Wednesday, March 23, 2011
inspected the cut of the HDPE. sanded the HDPE. discussed the riveting process with Nick. Ms. Green discussed a possible alternative.

Thursday, March 24, 2011
researched riveting installation. discussed it with Mr. Cuttrell. he demonstrated how a rivet works using a rivet and post it notes. I decided to test - cut out an HDPE block, started to drill holes into the block and aluminum.

Friday, March 25, 2011
redrilled holes into the HDPE and aluminum to the correct diameter. learned how to rivet by watching "How to Use a Rivet Gun" on youtube http://www.youtube.com/watch?v=0bGAiC0_i_k. riveted the HDPE and aluminum together, but there wasn't enough bite. researched some wall anchors.

Marking Period 2: Systems Engineering II Formal Progress Update

 

Arthur Eng
Cuttrell’s Cutthroats	Kevin Guadagno & Joseph Russell
Marine Academy of Science & Technology
Systems Engineering II	Mr. Cuttrell & Ms. Green
Remotely Operated Vehicle	Vehicle Structure

Vehicle Structure Design Brief

Solution #2

Orthographic Side

Orthographic Top

Orthographic Front



MP2 Log

Monday, November 15, 2010

With a delayed start to classroom time, due to the last FPU, I was able to start my supply, equipment, material, and part list, as well as plan of procedure. Had my completed developmental work reviewed. Researched aluminum sheeting and welding techniques.

Tuesday, November 16, 2010

Worked on the first design to the mounting bracket. The design was modified with a suggestion from Ms. Green and had a meeting with Joe Russell to establish a viable solution. Hand drew the initial design and then started to design on AutoCAD by establishing the basic frame.

Wednesday, November 17, 2010

Plagued with computer problems, I had to start my drawings over because I forgot to save. Again designed the brackets but ran into a design issue so I consulted with Joe and adjusted the plan accordingly.

Thursday, November 18, 2010

Finalized the final design with the mounting bracket and added it to the ROV design. Began the process of rendering the drawings.

Friday, November 19, 2010

I continued to work on the orthographic and isometric renderings by dimensioning the drawings. I was only able to complete the dimensioning and rendering of the right side view.

Monday, November 22, 2010
Wrote the week 1 log. updated the calendar.

Monday, November 29, 2010

Updated calendar, updated blog, completed all the dimensioning and started to export the pictures as PDFs

Tuesday, November 30, 2010

Finished dimensioning all views of the drawing.

Wednesday, December 1, 2010

Uploaded the pictures of the AutoCAD drawings and updated the blog.

Monday, December 6, 2010

Started the process to bid for materials by looking at sites to purchase 5052-H32 Aluminum.

Tuesday, December 7, 2010

Found my second store for aluminum.

Wednesday, December 8, 2010

Found my third store for aluminum.

Thursday, December 9, 2010

Bidding for HDPE

Friday completed the biddings inquiry forms for all three companies

Monday, December 13, 2010

Called the companies to ensure they faxed it back, went to pick them up from 305, started to write up the cover sheet

Tuesday, December 14, 2010

Finished the coversheet

Wednesday, December 15, 2010

Finished up the third version of the bidding sheet. And readied the rest of the packet

Thursday, December 16, 2010

Absent

Friday, December 17, 2010

Worked on the press release. Filled in the mentor involvement and edited the format

Monday, December 20, 2010

Added pictures to press release

Tuesday, December 21, 2010

Handed in press release

Monday, January 3, 2011 - Tuesday, January 4, 2011
finalized AutoCAD drawings

Wednesday, January 5, 2011 - Friday, January 7, 2011
helped Joe test the motors, continue to bug the teachers about the materials, helped Kevin take pictures of his gear construction *absent on Friday, January 7, 2011

Monday, January 10, 2011 - Tuesday, January 11, 2011
helped Kevin take pictures of his construction process, finalized dimensions on AutoCAD renderings, created PDFs of renderings to be converted into picture files

Thursday, January 13, 2011 - Friday, January 14, 2011
compiled mentor contacts, composed FPU outline, handed in both on Friday *snow day on Wednesday, January 12, 2011

Wednesday, January 19, 2011 -  Monday, January 24, 2011
Formal Progress Update Presentations *absent on Tuesday, January 18, 2011 and on Friday, January 21, 2010
*picked up the aluminum order from the main office on

Model of Intention

Developmental Work

Orthographic

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Front

Exploded Isometric

Rendered Isometric

Plan of Procedures

Supply List
Item	Description	QTY	Size	Remarks
1	Epoxy	1	½ lb	sealing
2	Sandpaper	X	X	Material reduction

Tools & Equipment List
Item	Description	Use
1	Cordless Drill	Preparing holes for the screws
2	Screwdriver	Screwing screws for the attachment of the aluminum body into the HDPE skids
3	GTAW welding torch with various electrodes, cups, collets, and gas diffusers	Welding the edges of the aluminum body
4	Band saw with cross cut carbide blade	Cutting the aluminum frame
5	Scroll saw	Cutting the HDPE

Material List
Item	Description	QTY	Size	Remarks
1	Grade 5052 10 Gage Aluminum Sheet	1	24”X48”	Aluminum body
2	HDPE Natural Sheet	1	1”X24”X48”	skids

Assembly Steps

1. Gather the materials and tools.

2. Cut the aluminum sheet into the flat shape designated in the drawing of the body.

3. Cut the two chamber walls from the aluminum sheet.

4. Bend the edges of the flat to form the body.

5. Seal the dry chamber with epoxy.

6. Weld the dry chamber.

7. Weld the wet chamber.

Rationale

The catamaran design of solution 1 takes its form from the catamaran sailboat design. A multihull design joined by a structure creates the general frame of the vehicle. On the surface of the water, the catamaran design arguably offers the best function, considering that it provides speed, stability and large capacity. The following design is 18 inches long, 12 inches wide and 6 inches tall. The design calls for the two hulls to be constructed with a welded aluminum boxes that is 18 inches long, 4 inches wide and 6 inches tall. The joining structure is a flat high density polyethylene board that will be attached to the two hulls to create the catamaran design. Offering a relatively compact size, the design would be able to maneuver around the pool with out much concern for interfering with the features in the pool. Additionally, the balanced design ensures that there won't be tilting towards one axis. Furthermore, the layout allows for multiple thrusters to be mounted for horizontal propulsion, as well as vertical propulsion. Overall, the only concern is that the buoyancy is on the bottom, which shifts the center of gravity further up.

Design 2, which is basically an aluminum box on two plastic skids offers a great range of options to effectively accomplish the goals. The initial rationale behind the catamaran design and this design is the fact that the ROV would be able to hover over the HUGO tower. However, this design shows more potential to out perform the catamaran design because the open, unobstructed area is more "open". Other pros include the fact that the buoyancy is located near the top and the design is relatively compact, allowing the ROV to maneuver around the pool efficiently. Furthermore, the skids are an excellent mechanism to stabilize the ROV without using a large footprint, when it needs to rest on the pool floor. Nevertheless there are concerns, one of which is the aluminum box, which may cause a problem when constructing due to the limited construction resources - lack of TIG welding equipment. Additionally, the design needs to account for thruster positioning granted there is space to have multiple horizontal and vertical thrusters. Another issue is the skids, which might need to be weighed down with additional weights in order to create a neutrally buoyant system. By and large, the skid design appears to be the top candidate as it seems to have the greatest potential to meet the specifications and complete the four tasks effectively.

The last design takes my own input and places them into conventional homemade ROV designs. The "Box" design utilizes PVC piping, which is a common material in homemade ROVs. With a ballast tank for buoyancy situated on the top, and much of the weight being consolidated towards the bottom half, the 24 inch long, 12 inch wide, and 9 inch tall box is designed to be quite stable. In addition, the simple piping not only offers an easy build but also provides the necessary buoyancy to ensure that the ROV will remain neutrally buoyant. For the most part, the design takes into account the specifications, such as having the ability to move in all directions, being portable enough to be carried and launched by the mission team, and having the ability to attach thrusters, as well as cameras, a claw, thermometer, and hydrophone. However, the use of PVC as the vehicle structure limits the ability to maneuver over objects in situations such as the HUGO tower. Additionally, though the design is portable, it might create for a difficult situation when retrieving the crustaceans in the tunnel. Though the design offers many basic functions that are designed according to the specifications, some of the disadvantages, especially the inability to maneuver over the HUGO tower make the "Box" an unworthy candidate compared to the two other designs.

Research

            In order to fully understand the background of ROV design for a fully functioning ROV that is to perform a checklist of tasks in a chlorinated, fresh water pool for the 2011 MATES ROV Competition, some research needs to be completed.

ROV:

A Remotely Operated Underwater Vehicle (ROV) is fundamentally an underwater robot that is controlled by an operator that is independent of the vehicle, from the surface that allows the operator to remain out of harm’s way while the ROV works in the hazardous environment below. The total ROV system is comprised of the vehicle, control, umbilical cord (tether), and power supplies. Basic features on an ROV include: thrusters, cameras, various sensors and/or tools. ROVs can vary in size depending on the work, from small vehicles for simple observation up to complex work systems, which can have several manipulators, cameras, tools, and other equipment.  

AUV:

An Autonomous Underwater Vehicle is a computer-controlled system that operates underwater. They lack any connection to the operator, considering that they are self-guiding and self-powered, unlike an ROV, which is tethered. Since the inception of the first AUV, they have advanced greatly. From simple movement similar to a torpedo, AUVs are now capable of gliding from the sea surface to ocean depths, and back. Others can stop, hover, and move like blimps or helicopters do through the air. And resembling the functions of ROVs, AUVs can be inserted in a multitude of environments, ranging from intertidal waters to the ocean floor. All of these functions can be focused for some tasks. Today, many AUVs are being utilized by the Navy for mine hunting. They are also finding usage in ocean research.

UAV:

Unmanned Aerial Vehicles are remotely operated airplanes that are used in place of sending humans into air for reasons that include: danger, dullness, or dirtiness. Many UAVs are used in military application for reconnaissance or attacks. Controlled from half-way across the country, pilots are able to control the plane in a safe cubicle, away from the warzone. Using bandwidth to exchange data, the pilot is able to send direct and immediate controls to the plane, usually with just a 2 second time delay.

Design:

The ROV system is a highly interrelated group of subsystems that, when functioning together, provides an impressive subsea capability. With many unique designs, there are many things to consider when constructing a functioning ROV, due to its environment, which introduces inherent factors that dictate the operation of the ROV. Because of this highly interdependent relationship, ROV system performance is a delicate balance of design and operational characteristic tradeoffs. The general subsystems of an ROV include: vehicle, tools and sensors, control/display console, electrical power distribution, umbilical and tether cords, and handling system. Thus with all these subsystems, it is understandable to see a small change be magnified across the whole ROV system.

Calendar

September Log

9/27
Looking back on the weekend, I uploaded an updated background, completed my alternate solutions, and uploaded the posts. Today, I started to read over the comments, followed by updating the alternate solutions by posting up the first entry for my first alternate solution. Need to complete the other two solution abstracts and provide an introduction and conclusion.

9/28
Considering I didn't get much done yesterday, and realize my blog is lacking overall I tried to locate some more pictures for my background page. Found about 20 images ranging from users to ROV application and uses. Lastly, added the second's solutions abstract. NEED TO FINISH.

9/29
From the gun, started working on the introduction, the third solution's abstract and conclusion. Looked over past posts to evaluate where I stand. Realize I need to add some more. Reminded that I need to complete my log, so I am posting NOW.