Can You Use a Raft as a Hovercraft?

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Using a raft as a hovercraft is proposed by installing a pillow bladder type skirt around the outer edge and securing a hard deck in the center. This design includes creating airflow and lift through strategically placed holes inside the raft. A ducted fan engine with a controlled vent is suggested for lift, along with a check valve to maintain airflow direction. The estimated power requirement is around 1.5 hp for achieving a 0.5-inch lift for a gross weight of 350 lbs, with additional power allocated for thrust. Concerns about stability and the risk of flipping are noted, emphasizing the importance of keeping the craft lightweight. The discussion also references the need for an engine in the 8 to 15 hp range for a 400 lb gross weight.
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Use a raft as a hovercraft by using a pillow bladder type skirt. Installing a hard deck in raft and securing the skirt in center forming a pillow around outer edge of raft. Then placing 2 in. Holes in upper inside for air flow and lift? Can it work?
 
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Piper84 said:
Use a raft as a hovercraft by using a pillow bladder type skirt. Installing a hard deck in raft and securing the skirt in center forming a pillow around outer edge of raft. Then placing 2 in. Holes in upper inside for air flow and lift? Can it work?
Welcome to the PF.

What are you going to use for an engine and propeller system?

https://upload.wikimedia.org/wikipedia/commons/0/05/Formel1_hovercraft.jpg
Formel1_hovercraft.jpg
 
Thinking of a ducted fan with a controlled vent at the base of duct to direct some air flow for lift. Also add a check valve to keep air flowing in one direction. With a 15 hp eng. the deck dem. Are 5 feet by 12 feet I think it would only take 1.5 hp for a .5 in lift at a gross wt. of 350 lbs. and the rest for thrust.?
 
By starting with a raft my thought is keeping the craft light just hope it will be stable and not flip.
 
Try a Google search of 'hovercraft kit'.
400 lb. gross takes an 8 to15 hp engine.
 
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