light weight and highly efficient drone that has the following features:
120 minutes without payload. 90 minutes with Aquascan payload (2 kilos)
-5°C to 45°C
The body of Aquascan is a retractable shaft that can extend from 5 meters to 30 meters. The remote controlled shaft is attached at the bottom of the drone (see introduction pic). The body of Aquascan must be made of non-corrosive material. The shaft must be concentric telescopic pipes that can use signals from the proximity sensors and extend or retract based on the proximity of the ocean floor. The length of the shaft can also be controlled remotely by a computer.
The outer diameter of the shaft is 1.5 inches. It is made of aluminum or a plastic that can withstand water corrosion. The whole unit must be waterproof. The inner most shaft is made of plastic or polycarbonate. It must be 1 inch in diameter and hollow to allow cables and wires from the sensors unit to the transmitter on the drone.
Figure 1 - Cross section view of the retractable body
1 bidirectional motor is installed in the sensor circuitry enclosure to control the length of the entire shaft. 4 pulleys are installed at the top of the outermost shaft. These pulleys are used to expand or retract the entire shaft. The motor is controlled remotely from a computer as well as signals from the proximity sensors at the base of Aquascan. The motor has metallic strings hooked to the inner most pipe and then to a roller mounted on the motor.
The inner most pipe in the shaft has as outward rim at the bottom edge. This allows for the innermost pipe to lift or drop the other pipes based on the depth specified from the computer and signals from the proximity sensors. The rim is also attached to the camera and lighting enclosure.
Figure 2 - Illustration of AquaScan body (not to scale).
3 high resolution cameras are placed in the camera and lighting enclosure at an angle of 120° to each other to get a complete 360° view of the ocean floor. The cables for these cameras should go through the shaft and connect to the transmitter on the drone.
Figure 3 - Camera enclosure
Figure 4 - Camera placement for 360° coverage.
Following are the specifications for the cameras.
The cameras must have the option to display date and time. All 3 cameras must be set to the exact date and time in the following formats:
Time - HH:MM:SS
Date - MM/DD/YYYY
Optional - The date and time can be set to or Coordinated Universal Time (UTC) or Greenwich Mean Time (GMT) standard time and converted to local time in the software application or vice versa.