What are floatplanes?

In 1910, Henri Fabre created the first floatplane. He called it the “Hydroavion” which is French for floatplane/seaplane. It was made out of plywood, so it was very light but it only went half a kilometer but landed safely. In the year following, in 1911, Glenn Curtiss created the Curtiss Model D . He was the first American inventor of the floatplane.It had a central float and had extra minor winged like structures called sponsons to help with buoyancy. During the first world war, the F-5 Northrop_F-5 and Curtiss Model H Curtis Model H were used by the Royal airforce and navy. For plenty of reasons, but one major one was there were limited landing strips, so pilots used these planes to land on the water when they had no access to an airport. In the 1930s, the Boeing 214 Clipper Boeing 314 Clipper was made- and it was supposed to be a luxurious transatlantic flight. But soon after, World War Two broke out in 1939-1945, and again float planes were used in the same way in WWI by the allies.

So, now we know what it does, what it’s been used for, who created it, and when it was created… Now we need to look at how it works, how it floats and takes off, and all of that jazz. This is just a diagram of a standard floatplane - as you can see there are two floats, some only have one big float like the Curtiss Model D. We want the plane to stay afloat on the water.

Diagram of standard floatplane

There are only two linear forces on it. The force of gravity, which is mass times gravity, and the force of buoyancy. Buoyancy is the water that’s displaced when the aircraft is in the water. Knowing that, mg has to be less than buoyant to float.

This is all due to Archimedes principles. Just like a boat, the hull of the floats can have different shapes.

Most commonly, there’s a flat, round, catamaran, deep-vee, and shallow vee. In floatplanes, shallow vee and round are the two most common because shallow vee’s make it smoother in rough water and round’s make it easier to maneuver. But because the round shapes have to constantly have a strong keel, which means always replacing it…

We’re going to focus on the shallow vee. Usually, there are five supportive structures. The middle one that’s on the bottom of the hull, keeps the craft steady and in a straight line, which is crucial for take-offs and landings. No pilot would ever want to curve when they are trying to taxi. The chines, the four other structures, serve to eliminate the water spray when the aircraft is taking off, which helps a lot with lift.

Next, there are three other things on the floats that make this aircraft usable. The rudder, the step, and the skeg. The rudder is used to steer the plane when it’s in the water. When the pilot begins their takeoff procedure, they put the floatplane “on the step” which lifts the back of the float. The skeg makes sure it stays up.

That’s the basics of how it floats, moves in water, takes off, and lands.

The four most beneficial things that the floatplane achieves and has helped humanity are the following: It can actually land in the water! Without it, search and rescue would be so much more difficult to achieve. Also, as previously mentioned, it helped in the world wars. It, in addition, helps contain forest fires. This is definitely something that has benefitted California with all of the wildfires that take place here in California!! Finally, there is now more access to underdeveloped places that may have no roads.

But what is the future of float planes? Some float planes have been converted to green energy- they use electricity and batteries, rather than fossil fuel. Prices are on a steady decrease, The icon A5 is a seaplane that cost 250,000. You can learn how to operate it easily and the price will eventually drop to 197,000. This would ensure more people would have access to floatplanes, so in the near future, we will be seeing a lot more of them. And we foresee floatplanes being used in more military operations. And any wars like the world wars or anything else.