Design of a Hovercraft

Project Overview

The hovercraft is an important used for many purposes. It can float above any type of terrain. Hovercraft sometimes called Air Cushion Vehicle due to its ability to move by cushion or skirt filled with air and causes the board to hover above the ground, and it moves by a thrust engine forward and fills up the cushion by the lift engine. In this project, the aim is to design and manufacture one-­‐man hovercraft. It can carry around 70 kg with a rated speed between 5 to 10 kilo meter per hour. Two fans are used for this hovercraft; one of the fans is used for thrust while the other is used for lift. Each fan has a separate engine to perform the required task. The thrust engine produces up to 5.5 horsepower at a rated revolution per minute of 3300, and the list engine is rated at 6.7 horsepower at rated revolution per minute of 3600. The dimensions of the hovercraft is 1.75 meters long and 0.875 meters, and reason behind these dimensions is to have performance and equilibrium a hovercraft must a have 2:1 ratio for length and width for the optimum stability. Furthermore, the thrust duct diameter used in this hovercraft is 90 cm, while the thrust propeller is approximately 80 cm (32 inches) with a pitch of 10. The engines shaft is connected to a hub, which is linked to the propeller. However, the design of the hovercraft applies a horizontal shaft engine and a vertical shaft engine that is used for the list mechanism. The hovercraft is provided with rudders to control the direction of airflow, consequently controls the direction of movement of the hovercraft. The whole engine base of the hovercraft is semi rectangular in shape, while the edges are semi circle in shape (fillet) in order to decrease unneeded friction and increase aerodynamics. While the base itself is made out of natural wood that is from Indonesia, while the skirt of the hovercraft 1680 D. Traveler Nylon which is a plastic material that has rigid properties and used in all sorts of hovercrafts. Moreover, the propeller are made of wood that CNC cut and pre-­‐balanced to decrease vibration during engine rotation. Finally, our objective is to approach a hovercraft that is able to float and move while carrying a person with a weight of 80 kg

Project Objectives

The hovercraft project went into several phases, and challenges to approach the following objectives.
  • Prototype the hovercraft with a simple design that can do the required functions of movements.
  • The approach design of hovercraft is to move with a rated speed of 10 to 15 kilometers per hours.
  • Hovercraft can tolerate with more weight up to 200 kilograms and operates under intensive conditions smoothly.
  • Improve the factor of safety for all materials during all operation processes.
  • Propagate new vision for a vehicle that can operate in different terrains and conditions.