What is a disadvantage of hovercraft design?
Like all vehicles hovercraft do have limitations: Hovercraft are limited to carry a certain payload depending on their size to ensure effective hover. Their weight must be balanced for effective mobility and control. High winds and heavy sea states have an unfavourable effect on performance.
What are the most important parts of a hovercraft?
A conventional hovercraft has three main components: A platform, a motorized fan, and a skirt. The fan blows air underneath the platform, where it is trapped between the platform and the ground by the skirt.
What is the best material for a hovercraft?
A craft built lightweight enough (more like an airframe than an naval vessel), so usually aluminium alloys and possibly composites.
What makes the hovercraft rise?
Hovercraft use blowers to produce a large volume of air below the hull, or air cushion, that is slightly above atmospheric pressure. The pressure difference between the higher pressure air below the hull and lower pressure ambient air above it produces lift, which causes the hull to float above the running surface.
How efficient is a hovercraft?
A hovercraft is 100% more fuel-efficient than a boat with similar capacity or size. Hovercraft ride much smoother than boats because they travel over the surface of the water, not through it.
Why did the hovercraft fail?
Essentially, they just aren’t cost effective. For the amount of fuel they take and the maintenance costs, combined with a lack of common comforts to the mode of travel, it just isn’t a feasible method of transportation in a majority of instances.
On what principle does the hovercraft work?
Basic Principle of Hovercraft The basic principle of the hovercraft is that moving an object from the ground using air, then it requires less force to move the object. Because the object does not have any contact with the ground, then the surface tension will get reduced.
What material is a hovercraft made of?
A hovercraft hull is typically constructed from aluminum, fiberglass, plastic or plywood, or a combination thereof. Some racing hovercraft have been made from composite honeycomb sheet aluminum. It is important that a provision be made for buoyancy so the craft will float on water.
What materials are used to make a hovercraft?
Materials: One-half sheet of 5/8″ exterior plywood; backpack-style leaf blower 30 cc engine or greater (Husquarna, model 145BT with Kawasaki engine) or if used indoors an electric or battery leaf blower, like Black and Decker with 230 mph and 380 cfm; sheet of heavy plastic (6 mil) or heavy duty tarpaulin larger than …
Which lubricant is used in hovercraft?
Solid, plastic, or liquid materials called lubricants are used to reduce the effects of friction. Petroleum jelly, motor oil, and the ball bearings contained between a wheel and its axle are examples of common lubricants. Hovercrafts work on two main principles: lift and propulsion.
How is friction reduced in a hovercraft?
Vents or currents of slow-moving, low-pressure air are ejected downward against the surface below the hovercraft. The trapped air currents can create an air cushion on any smooth surface, land or water! The cushion greatly reduces friction, allowing the vehicle to glide freely over the smooth surface below.
What are the requirements for the design and construction of a hovercraft?
Hovercraft must be constructed from all new materials and components, which will last more than 25 years under normal use. Maintenance of structure, power plant and components must be of a level similar to any vehicle (s) having the same characteristics.
What are the characteristics of a light hovercraft?
Characteristics and specifications for a light hovercraft which has broad abilities such as operations over thin ice, open water, swiftwater, flood water, salt water, mud and marsh and which meets the following specifications will provide good service and will represent value in the eyes of the owner or operator.
How much weight can the hovercraft lift on the floor?
The hovercraft is capable of static hovering with over a 300 lb. payload on the smooth garage floor. A larger capacity was not tested because more weights were not available.
What was the goal of the Hovercraft project?
Sustained and accelerating forward motion was achieved on a paved, downhill road with a passenger. The hovercraft was incapable of traversing grassy terrain or moving uphill gradients. So, the hovercraft was able to hover and move depending on the hardness, smoothness, and slope of the terrain so our basic goals were achieved.