Introduction: Super Easy Hovercraft

Picture of Super Easy Hovercraft

Hovercrafts are very easy to make and they can be constructed with several household items.They are not very time consuming and are overall fun!

Step 1: Materials List

-4'x4' piece of plywood
-2 fender washers
-a 2 inch bolt 14/20
-a nut 1/4-20
-heavy plastic sheet/tarp
-small plastic disk
-hole saw
-drill
-wrench
-sandpaper(optional)
-jig saw
-leaf blower
-staple gun
-razor knife
-smooth surface
-duct tape
-razor knife or scissors

Step 2: Shape the Wood/drill Holes

-using a jig saw cut the wood into your desired shape,a circle or a square with rounded off corners works best, you don't want to keep the sharp edges because they can pose a safety hazard

-find the exact center of the wood and then drill a 5/16 inch hole

-make a hole that will be big enough for the leaf blower nozzle to fit, this hole should be located halfway between the center and the edge to do so use a hole saw

Step 3: Attach the Plastic Sheet/tarp

Picture of Attach the Plastic Sheet/tarp

-place your wood in the center of the plastic/sheet tarp you are using and fold over the edges

-staple the tarp to the wood placing a staple every 4 inches and make sure the tarp is tight but not too tight because then when you try it out it will tear

-to reinforce the tarp duct tape the egdes to make sure no air escapes

Step 4: Attaching the Plastic Disk

Picture of Attaching the Plastic Disk

-poke a hole in the center of your plastic disk large enough to fit the bolt through

-place a fender washer over the bolt and then put the bolt through the plastic disk ,then put it through the 5/16 inch hole in the wood

-put another fender washer over the bolt then take the nut and tighten onto the bolt using a wrench

Step 5: Cutting Vent Holes

Picture of Cutting Vent Holes

-Use the razor knife or scissors to cut six vent holes in the plastic sheet/tarp that are 2 inches in diameter,place them within a few inches of the lid and evenly space out the holes

Step 6: What Worked and What Didn't

-when we made our hovercraft everything worked well we only had one problem which was the hole being too small , but we were able to make the hole bigger and then everything worked fine

-the tarp we used worked well it was strong enough to support the hovercraft and the person on it

Step 7: Physics Concepts Associated With the "Super Easy Hovercraft"

plenum chamber: this chamber is where the air is circulating around the perimeter of the board which gets the board to hover

pressure:more air is being forced into the plenum chamber so the air underneath the hovercraft is always at a higher pressure than the air outside the chamber which makes the hovercraft hover

friction:since there is a small amount of friction the hovercraft freely moves to any direction it wants

Newton's 3rd law of motion:for every action there is an equal and oppsite reaction when you step off the craft the craft moves the opposite direction which demonstrates this law

momentum: momentum is mass in motion and since the hovercraft has mass and it is in motin it thus has momentum

Comments

slaveboy2000 (author)2012-08-05

can you use a hair dryer ?

jessicafromsheekgeek (author)2008-12-26

What type/model leaf blower did you use?

you can use any type above 120mph winds i used a homelite from home depot for $30

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