MP3 Calendar

February

4. Production of the calendar.
5. Calendar due/ update webblog.
6. Glue frame together.
7. Cut pieces with Jeremy for mechanical arm.
8. Begin the process of putting the arm together.

11. Finish the construction of the mechanical arm.
12. Update webblog with the first set of construction pictures.
13. Revise expanded isometric drawing.
14. Begin to compile a master drawing of the entire craft together.
15. Finish the drawing of all the pieces together.

19. Cut the base for the components and attach with zip ties.
20. Update webblog with new photos of the construction process.
21. Paint the frame and base piece.
22. Attach bilge pumps to base.

25. Connect power cables to bilge pumps and test.
26. Construct electrical housing for craft.
27. Gut Atari Joystick and draw up sketching for the redone wire plan.
28. Begin to replace old wiring with newly adjusted CAT-5 wiring.
29. Complete rewiring of Joystick

March

3. Attach mechanical arm to the PVC.
4. Mount two waterproof cameras to the frame of the craft.
5. Begin construction of the “Umbilical cord”/ work on the hydraulic hosing.
6. Continue work on the “Umbilical cord” working on the CAT-5 cables to control the craft.
7. Finish the “Umbilical cord” finishing work on the video cables and power cables.

10. Possible testing date for the craft at Monmouth University
11. Possible testing date for the craft at Monmouth University/ reworking any needed changes.
12. Rework any needed changes to the craft.
13. Begin Press release document.
14. Continue the press release document.

17. Wrap up major elements of press release document.
18. Finish press release document.
19. Press release.
20. Construction due.

31. Preparation for presentations, produce outline.

April

2. Finish review of all material for the presentation.
3. Presentations begin & webblog due.
4. Continue presentations.
5. Third day of presentations.
6. Fourth day of presentations courtesy of Joe DiMarco.

9. Wrap up anything that needs work before the competition.
10. Relax.

Math and Science Report

The ROV Mate Submersible is a complicated project that entails many aspects of science, math and technology. Incorporated particularly in the frame of the ROV; the science and technology are the two predominating factors for success; math plays a major role, involving buoyancy and the angles that the pieces are put together at.
Science and Technology:

Zip tie:

Zip ties are a hard plastic, reusable strap that can hold two objects very tightly together. They are cheap and easy to come by and good for many situations. They will be used to strap the plastic mesh that will hold all of the components onto the PVC frame.

The Chemistry of PVC:

Polyvinyl chloride, better known as PVC, it is a thermoplastic (see figure 1 below for chemical make up). A thermoplastic is a plastic that can be melted into a liquid and put into molds to make the desired piece. It is generally used in piping systems in commercial structures in today’s modern world (Wikipedia). This material is durable, cheap, easy to come by and very customizable in the fact that an endless number of structures can be built with it according to the situation in which it best fits.

(Figure 1) – The chemical make up of polyvinyl chloride on the right hand of the equation. It is made up of hydrogen (H), chlorine (Cl), and carbon (C). This than goes through polymerization and becomes what is PVC on the left (Wikipedia).

PVC Cement:

PVC cement is a critical tool in putting together several lengths and/or joints of PVC. It chemically bonds the PVC to create a nearly unbreakable, airtight seal when applied correctly. The chemicals in PVC could not have been combined many years ago, but due to today’s technology this is possible. PVC cement contains: acetone, methyl ethyl ketone, cyclohexanone, tetrahydrofuran, and finally polyvinyl chloride. All of these chemicals are dangerous to humans if ingested but together when mixed properly they make an adhesive for plastics that is strong as cement.
Mathematics:
Buoyancy:

Buoyancy is the waters force pushing upward on an object, in this specific case the ROV Mate Frame. To calculate the buoyancy of the craft, an equation for the volume will be necessary. The way to most accurately measure the volume of the craft will be to measure all of its components as cylinders. This will give a relatively accurate volume of the craft. The equation for the volume of a cylinder is as follows: V= 3.14r²h

The “r” or radius for all of the piping in the frame is 1in because the diameter is 2 in. The “h” or height for the two long sides seen in Figure 3 will have a height of 31.2 in. The shorter sections will have a height of 13 in. And the six short bottom pieces will have a height of 2.5 in.

V= 3.14 (1²) 31.2 in = 97.97 in³ x 2 = 195.94 in³

V= 3.14 (1²) 13 in = 40.82 in³ x 2 = 81.64 in³

V= 3.14 (1²) 2.5 in = 7.85 in³ x 6 = 47.1 in³

Total volume = 195.94 in³ + 81.64 in³ + 47.1 in³ = 324.68i n³

Conversion from cubic inches to liters of displacement:

324.68 in³ x 0.01639 = 5.322 liters

The crafts overall buoyancy and displacement of water is roughly 324.68 or 5.322 liters.

Physical Check:

To check the math, the crafts underwater submerged volume will be needed. This measurement will be obtained after the frame is built. The method to check the crafts volume will be based on Archimedes Principle; when an object is placed in a liquid the amount of fluid that it displaces is its . The craft will then be submerged in a measured body of water. After the craft is placed in the water the displacement will be measured by the change in height of the water. This displacement is the submerged volume. After finding the submerged volume this measure will be multiplied with the density of the surrounding liquid. This liquid will be water. The density of water is 1gram/cm³. The ROV will not be operated at a depth of more than four meters so the pressure will be approximately one atmosphere, or G= 9.81. The equation that will be used to check the math:

Buoyancy = (1gram/cm³) (Volume) (9.81)

After the calculation is made weights will be added evenly to the “F” pieces displayed in Figure two below. The weights will be added until the craft is close to neutral buoyancy yet is still positively buoyant.

Pythagoras Theorem:

A² + B² = C². This simple equation can be used to measure the length of any side of a right angle triangle, if the other two dimensions are known. This will help the construction of the frame so that the corner angles on the top rectangle (see Figure 2; the combined pieces of “A," "B," "D," and "E"). When "A," "B," and "D" are combined the angle must be precisely at 90˚. In order to do this the lengths of two adjacent sides must be taken (see Figure 3). The longer side length of the top of the frame is 2’-6”. The shorter side length is 1’-6”. These are sides A and B.

A = 1.5’

B = 2.5’

A² = 2.25’

B² = 6.25’

2.25’ + 6.25’ = 8.5’ the square root of 8.5’ is 2.915’. When the frame is being dry fitted together the distance from corner to corner must be 2’-11”.

These sciences, mathematics, and technology all contribute to the soundness of the design and the final production of the frame. The mathematics will help make the craft the perfect dimensions. The calculation of buoyancy will aid in the counter weighting the crafts positive buoyancy even after all of the components are added.
Pictures:

(Figure 2) – The completed expanded isometric CAD drawing of the ROV Mate Submersible frame.

(Figure 3) - This is the completed labeled orthographic view of the ROV Mate frame.

Plan of Procedures and Bill of Materials

Plan of Procedure
1. Gather all materials listed in the above tables, and bring them to the working area.
2. Gather all measuring and marking material and bring them to the working area.
3. Measure and mark out, “A” 10 3/8” (See Figure 1 below and Table 3 above).
4. Four lengths of this size are required (repeat three more times).
5. These lengths will than be cut accurately on the band saw.
6. Proceed to measure and mark out “B” 1’-0 1/8” (See Figure 1 below and Table 3 above).
7. Two lengths of this size are required, repeat once.
8. Cut these two lengths using the band saw.
9. Proceed to measure and mark out “C” 2 3/4" (See Figure 1 below and Table 3 above).
10. Six lengths of this size are required so repeat step “9” five additional times.
11. Cut these six lengths of PVC with the band saw.
12. Now all of the pieces that need to be custom cut have been completed the pieces can now be cemented together.
13. First begin with item “E,” (See Figure 1 below and Table 3 above), use the brush in the primer can to spread the primer inside the joint on the top or cap of the of the “Tee.” Do this in a circular motion until the entire inside of the Tee to the first ridge is covered in primer.
14. Do this on both ends of one Tee.
15. No time is required for the primer to sit; after both sides of the top of the Tee have been primed, proceed to apply the PVC cement in the same fashion on both sides of the top of the Tee. NOTE: Do not yet apply primer or cement to the bottom of the Tee, this will be done later in the construction.
16. After the PVC cement has been thoroughly spread on the inside of the top of the Tee, insert “A” (one of the pieces cut out in steps “3” and “4”) as far as the Tee joint will allow the piping to slide. Sometimes a moderate amount of force will be required to ensure that the piece is all the way in.
17. Repeat step “16”on the opposing side of the Tee.
18. Repeat steps “13-17” with the other “E” piece and the two remaining “A” pieces.
19. Begin with one of the “D” pieces and apply primer and than glue to the inside of one side of it as done with piece “E” in steps “13” and “15.”
20. Repeat step “19” on another “D” piece.
21. With two pieces of “D” primed and ready to be bonded with PVC insert piece “B” into the appropriately prepared opening.
22. Take the second prepared “D” piece and push it onto the end of “B” so that it is at the same angle as the other “D” piece and so that one of its openings is facing down like the other “D.”
23. Now repeat steps “18-22” with the remaining “B” and “D” pieces.
24. After these four sets of pieces have been assembled the basic rectangular shape is ready to be assembled for the structure.
25. First prime and cement the insides of the all four “D” pieces.
26. Next insert the one of the “A” pieces into the “D,” while inserting this pipe into the joint make sure that the Tee’s open hole is facing downward in the same way that the open “D” hole is.
27. Repeat step “26” on the other side of this set.
28. Now push the remaining set of the “A” and “D” pieces together with the exposed “A” pieces (as seen in Figure 1).
29. Now let the competed rectangle sit for several minutes until the cement hardens and the joints become inseparable.
30. After the rectangle sets and becomes one piece prime and cement the opening on the two Tees and the four corners.
31. When all six of these openings are prepared insert the “C” pieces (as seen in figure 1).
32. Let these set joints set; when these are solidly joined the assembly is finished for the time being.
33. Now piece “G” must be measured and cut to the appropriate dimensions.
34. Use the band saw to cut the plastic mesh to the proper dimensions.
35. Set the cut plastic mesh inside the rectangular structure.
36. Use zip ties to fasten the hard plastic mesh to the frame.
37. “F” pieces will be permanently cemented on at a later point after the buoyancy measurements are completed and the craft is ready to have the final counter buoyancy weights attached.

Expanded Isometric

This is the completed 3D expanded isometric showing all the parts that will be used to build the frame.

Isometric

This is the completed isometric view of the frame for the ROV Craft.

Final Orthographic Design

This is the final orthographic view with dimensions and labels for all of the materials.

MP2 Calender

November
12. Work on calendar.
13. Finish calendar and post on webblog.
14. Begin developmental work, orthographic views.
15. Continue orthographic views.
16. Continue orthographic views.
19. Continue orthographic views.
20. Continue orthographic views.
21. Continue orthographic views.
22. Have completed orthographic views completed post on webblog.
23. Begin work on exploded isometric views.
26. Continue work on exploded isometric views.
27. Continue work on exploded isometric views.
28. Continue work on exploded isometric views.
29. Continue work on exploded isometric views.
30. Continue work on exploded isometric views.

December
3. Have completed exploded isometric views and post on webblog.
4. Begin work on the rendered isometric.
5. Continue work on rendered isometric.
6. Continue work on rendered isometric.
7. Continue work on rendered isometric.
8. Continue work on rendered isometric.
10. Continue work on rendered isometric.
11. Continue work on rendered isometric.
12. Finish work on rendered isometric and post on webblog.
13. Begin work on plan of procedures.
14. Begin bid process and continue with plan of procedures.
17. Continue bid process.
18. Complete bid process and plan of procedures, and post on webblog.
19. Touch up any areas needing it on webblog.
20. Prepare to collect materials upon return.
21. Take a well deserved rest this class.
22-31. Winter break

January
1. Winter break
2. Prepare to collect materials for construction.
3. Continue collecting materials for construction.
4. Continue collecting materials for construction.
7. Finish collecting materials for construction.
8. Begin construction of frame.
9. Continue construction of frame.
10. Continue construction of frame
11. Continue construction of frame
14. Begin preparation for presentation.
15. Continue presentation.
16. Finish preparing for presentation.
17. Begin presentations.
18. Continue presentations.
21. MLK DAY
22. Finish presentations.