Rationale

Rationale:

    

Alternate Solution 1:

     Alternate solution 1 a three motor configuration with two of the motors side by side facing the rear located in the rear and the third vertical motor placed centrally to the ROV facing propeller up. Solution 1 allows for simple controls, powering the right motor turns the ROV left and vice versa, powering both motors forward at the same time will move the ROV forwards, and powering the vertical motor will move the ROV in the water column.

Alternate Solution 2:

     Alternate Solution 2 is a four motor configuration where all four motors are located in the rear of the ROV, thus allowing for fine maneuvering while operating the ROV. This configuration presents an issue for balancing the weight of the ROV.

Alternate Solution 3:

     Alternate solution 3 is made of six motors each on opposing faces of each other. There is a motor for up, down, a left plane, right plane, forward, and backwards and each is independent of each other.

Alternate Solution 4:

     Alternate Solution 3 is has three motors, one to propel the ROV and two to control steer the ROV. The two sets of flaps redirect the water flow over the ROV and make the ROV either turn left, right, up, and down.

Design:
Circuit difficulty	3	3	2	3
Movement forward and backward	3	4	1	4
Movement left and right	2	3	3	1
Movement up and down	3	3	2	1
Operational in all planes	1	4	3	2
Total	12	17	11	11

Design One scored 12 out 20. Wiring this circuit consists of three double pole double throw switches which is basic but could be potentially difficult so it received a grade of ¾. Movement forward and backward with solution 1 is powerful because of its two rear motors. Vertical movement in the water column is slow because of only one vertical motor. Left and right movements with this design make the ROV sweep to the left and right by powering the left and right independently or inversely (depending on how hard of a turn desired). Not being able to finely adjust the ROV and make it move other than in 90 degree angles gives the solution a score of 12.

Design Two is the highest scoring solution. The design is based on turning and then propelling forward. Four motors in the rear make forward and backwards movement highly effective. To move in the up and down plane, the ROV must rotate itself in the desired direction and then be powered forward. The same is true for moving left and right; the ROV swings itself and then propelled forward. Having the motors in the back and in the “X” configuration allows for fine tuning adjustments.

Design Three is like a cube with a motor and propeller on each face. Wiring six motors is a nuisance so it received a grade of 2 for circuit difficulty. Moving design three is limited because once put in the pool, that is the only way it can face; the ROV design cannot turn itself. It can only move in 90 degree angles.

Design Four is based off the idea of submarines. A single prop and motor in the rear makes the Design very strong moving forward and backward but means that the ROV cannot move directly left or right without moving in the forward or backward direction. Maneuverability is dependent on the operator.