Many beginners, who first saw on the water unusual vessel with a huge propeller in the rear, ask the question: what is the name of a boat with a fan in the rear? planeboat or airboatIt's a unique invention that's very different from traditional glitter boats with outboard motors that use a propeller submerged in water.
The main thing about the design is that it's propelled by an air propeller that's enclosed in a safety ring, which is why the popular name is "fan boat," which is simple, but not quite accurate, and it can reach impressive speeds and, most importantly, pass where ordinary motors will instantly land on the bottom or damage the screw against the rocks.
In this article we will discuss in detail Construction of the aeroboats, their advantages over classical models and answer the question why the presence of the aircraft is not possible. propeller It makes them ideal for certain operating conditions, and you'll learn why pilots of these vessels are not afraid of reeds and shallow waters, and whether you should consider this option for your next purchase.
Official name and history of occurrence
The correct technical name of the boat - boat (from Greek "aer" means air) The term is often used in English documentation. AirboatThe story of these machines goes back to the early twentieth century, when engineers were looking for ways to quickly navigate the wetlands of Florida, where ordinary screws were constantly entangled in algae, and shallow water made navigation impossible.
The first models were bulky and noisy, but the idea was viable. The design evolved over time, with lightweight aluminum bodies and powerful car engines. air-draught Today, aeroboats are used not only for cruising, but also for rescue operations and patrolling nature reserves.
⚠️ Warning: Despite its resemblance to hovercrafts, the aeroboat does not have a skirt to create an air cushion, but moves solely by propeller propulsion, relying on the water body like a normal boat.
The myth is that these boats were only developed in the United States, but propeller experiments were conducted in Russia before the revolution, even though they were widely used in America, and modern models combine high-tech composite materials with time-tested aerodynamics.
The design and operation of the aeroboat
To understand why a boat with a fan behind is so efficient, we need to look at its design: it's based on a flat bottom that minimizes drag when it comes into contact with water and allows you to slide even in very small places, and the engine, most often automobile or aircraft, is located in the aft and is covered with a protective frame.
The main element is propeller Unlike the underwater propeller, it operates in an air environment that eliminates cavitation and damage to solid objects, and is operated by steering feathers directly behind the propeller's airflow, which allows for high maneuverability, allowing for near-situ deployment.
- 🚀 Engine: Often used powerful V-shaped engines from Chevrolet or Ford, providing high traction.
- 🌀 Protective ring: Metal mesh or casing around the screw, preventing injury and damage when in contact with obstacles.
- ⚓ hull: Made of aluminum or fiberglass, has a flat shape for maximum planing.
Why isn't the screw in the water?
The propeller loses efficiency when it is ingested in a mixture of water and air, and is easily damaged by bottom debris. The propeller is devoid of these disadvantages, operating exclusively in air, which increases its reliability in difficult conditions.
It is important to note that the lack of submerged moving parts (except the hull itself) makes these vessels very reliable. propeller The control system is also simpler mechanically, although it requires certain skills from the pilot, especially at high speeds.
Advantages over Classical Boats
Why do fishermen and hunters choose this type of vessel? The answer is uniquely cross-country: a boat with a fan in the back can travel to areas where the depth is less than 10-15 centimeters, and no outboard motor with a conventional propeller can operate in such conditions without the risk of instant failure.
They also have enviable speeds, and because they have no water resistance to moving parts and use powerful engines, they can easily reach speeds of 70-80 km/h, which is critical for rescue services and patrols who need to get to their destination quickly.
| Characterization | Aerolodge | Classic PM boat |
|---|---|---|
| Permeability | Tall (shoulder, grass) | Low (risk to screw) |
| Speed. | Up to 80 km/h and above | Usually 40-60 km/h |
| Noise | Very high. | Medium/Low |
| Cost | High. | Medium |
The main advantage of the aeroboat is absolute independence from the depth of the reservoir and the state of the bottom, which makes it the king of shallow water and overgrown ducts.
Another advantage is the safety of fauna, because there are no fast-rotating blades under the water, the risk of injuring fish or aquatic animals is minimized, which makes aeroboats popular in protected areas where traditional motors are prohibited.
Disadvantages and limitations of operation
Despite the impressive performance, the aeroboats have some significant downsides. noiseThe high-speed engine and whistled propeller create a sound background comparable to that of a plane taking off. It's almost impossible to talk on board without special headphones, which can irritate people and frighten fish.
The second disadvantage is weather dependence, because strong side winds have a much greater impact on a high-silhouette, high-sailing boat than a normal boat, and storm management requires a high level of pilot skills.
- 🔊 High noise level: It requires hearing protection for all passengers.
- 💨 Wind impact: Strong gusts can significantly deflect the boat from the course.
- ⛽ Fuel consumption: Powerful engines consume a lot of gasoline, especially at full speeds.
⚠️ Attention: Due to the high center of gravity and flat bottom, aeroboats are less resistant to wave than keel boats. Going out on open water in winds above 3-4 points on such vessels can be dangerous.
Also worth mentioning is the cost: a new engined boat can cost several times the cost of a PVC+engine kit, and it requires a special trailer because of its size and weight.
Applications: where the irreplaceable propeller
Where do you find a fan boat from behind most often? Most notably, inaccessible marshy areas, deltas of large rivers (like the Volga or the Lena) and shallow bays, where aeroboats are used for fishing, hunting and shipping.
Emergency services and similar organizations around the world are using these vessels to evacuate people from flood zones, and their ability to pass over the tops of bushes without fear of floating debris makes them indispensable in emergency situations.
The tourism industry has also taken a stand, with many countries (USA, Thailand, Russia) hosting guided tours by aeroboats, offering passengers a breeze through scenic but hard-to-reach natural environments, watching wildlife from a safe distance.
Safety rules and GIMS
Operation of the aircraft requires strict compliance with safety regulations, the absence of the board in the usual sense (often it is just a low board or an open platform) and high speed pose risks of loss of passengers. lifejackets It is a prerequisite.
From the point of view of legislation, in Russia, aeroboats are subject to registration with GIMS if their load capacity exceeds 225 kg or engine power exceeds 8 kW (about 10.8 hp). The boat must be marked with registration numbers, and the driver must have the appropriate certificate.
Before each release to the water, it is recommended to conduct a visual inspection of the protective shell of the screw and engine anchorages. Any crack in the protective mesh can lead to serious consequences if a foreign object enters the rotation zone.
☑️ Checking before getting on the water
⚠️ Attention: It is strictly forbidden to touch a rotating propeller even after the engine stops until it stops completely. The propeller's inertia is high and it can remain mobile for several seconds.
Frequently Asked Questions (FAQ)
Do I need the rights to operate the aircraft?
Yes, if the engine power exceeds 8 kW (about 10.8 hp) or the payload capacity exceeds 225 kg, the vessel is subject to registration and the driver must have a license to operate a small vessel of the appropriate category (usually a “motor boat”).
Can I use an aeroboat in winter?
Theoretically, yes, there are hovercraft, but the classic aeroboat is designed for water, but some enthusiasts use them on ice or snow, although this requires special training and is not a regular operating mode.
Why are the boats so noisy?
Noise is created by two sources: the work of a powerful engine without a water-type silencer (as in ordinary engines) and the aerodynamic whistle of the screw blades, dissecting air at high speed.
Is it difficult to fly an aeroboat?
It's different from the usual. There's no steering wheel in the classical sense, there's no nose rotating, there's a feather shift in the airflow, and it's addictive, especially at low speeds and side winds.
Where to buy an aeroboat in Russia?
Airboats are produced by specialized plants (for example, in St. Petersburg, Novosibirsk, Ufa), they can be purchased directly from manufacturers or through dealers of boating equipment specializing in special equipment.