Semi Automated Radio Control Hovercraft (Bachelor level project)

Summary

Two powerful motors separately serve the purpose of lifting the craft and move or steer the craft. The air blown by motor pointing downwards is contained in a skirt and creates an appropriate lift. This amphibious machine is capable of traversing easily on almost any terrain (land, water ice and marshy areas).

  Design Of Skirt And Stability Factor

We have made our skirt out of polyethylene material sheet. The sheet should be pour less strong enough and water proof  because it encounters different types of surfaces . The sheet covers the entire base of the hovercraft. the stability is also an important and  main factor in the designing of   the skirt. The skirt should not weigh too much. the skirt should be pour less because  air has to be filled in it.

Lift Motor Implementation

We inserted a powerful motor in the middle of the base of the hovercraft. This power full motor basically enables the craft to lift in air above 3 to 4 inches above the ground and therefore air acts as a cushion between the body and the surface it encounters.

Axial Fan Implementation

We inserted the axial fan the axial fan basically allows the horizontal  movement of the hovercraft and allows the craft to propel horizontally easily on any surface. The propeller is connected through rotary  to linear converter. We can go in any direction through this fan.

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Boiler Control Using Control Area Network

Summary

         In this project 3 parameters of a boiler are controlled. These three parameters are flow, level, and temperature. For level and flow control, we are using water as a conductor. When water will be flowing through the input water supply pipe then we ‘ll be getting an indication on computer screen to make sure that water supply is available. Similarly when water level is reduced from the set point then solenoid valve ‘ll be operated automatically to increase the water level in the boiler. For temperature control, we are using PT100 as a sensor. Its output is given to microcontroller and serial communication circuit. When the temperature increases from a set point, the microcontroller gets close the solenoid valve, which is placed at the output of the gas cylinder. The data received from the flow and temperature sensor is given to serial communication kit. This kit sends the data to the control area netwrok (CAN) transciever. CAN tranciever sends the data to the CAN controller and then to the CAN bus respectively. This data is received by the CAN tranciever, which is placed the other end of the CAN bus. That CAN tranciever sends the data to the CAN controller and to the serial communication kit. Serial communication kit sends the data to the P.C through serial port. That data is shown on the GUI, which is built using the matlab.

General Block Diagram

Electrical System Block Diagram

Cold Water System Block Diagram

(figure 1-1)

Hot Water System Block Diagram

(figure 1-2)

        Water tank provides input supply of water. Input pipe of water contains flow sensor, electronic valve and one way valve. One way valve avoids water to return back. Gas cylinder is used as fuel for burner and pilot. Manual valves are used to control the pressure of the gas for both the burner and pilot, separately. Control valve concerns only with the burner, not the pilot. Steam produced in the boiler is collected at the jar, in the form of distilled water. The process of conversion of steam into the distilled water happens in way, where pipe is given a shape of coil and dipped into the cooled water tub. Cold water has a recycled system to keep cooling the water all the time. That recylcing system contains a water submersible pump, which pumps the hot the water contain in the tub, to the radiator through a pipe, that radiator cools the water with the help of a fan and sends the water back into the tub through pipes. The whole process is shown in the fig    1-1 and fig 1-2

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