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Oct 29, 2020 · Tail rotor designs. Focusing on the smaller tail rotor of single rotor helicopter designs, you might wonder why it’s needed at all. After all, the large rotor does most of the work lifting the ...
The tail rotor is a smaller rotor mounted vertically or near-vertically at the tail of a traditional single-rotor helicopter, where it rotates to generate a propeller -like horizontal thrust in the same direction as the main rotor 's rotation. The tail rotor's position and distance from the helicopter's center of mass allow it to develop enough ...
To explain what a helicopters tail rotor does, this video also covers the different types of anti-torque systems - traditional helicopter tail rotor, ducted ...
- 4 min
- 44.3K
- Helicopter Training Videos
- What Is A Helicopter Anti-Torque System?
- Types of Helicopter Anti-Torque Systems
- The Fenestron System
- To Finish
Before we jump into the types of tail rotor systems I wanted to quickly explain what the tail rotor system is actually for as this will help you understand each type of system better. A tail rotor system is designed to stop the helicopter from spinning around when it lifts off the ground. As the engine drives the main rotor in one direction, the fu...
Now we know what the role of a tail rotor system is, let’s look at some of the incredible pieces of engineering that prevent today’s helicopters from spinning around! There are four main types of helicopter Anti-Torque system: 1. Bladed Tail Rotor 2. Fenestron Tail Rotor 3. NOTAR 4. No System
The Fenestron is a Trademarked Anti-Torque system used on many Eurocopter, now Airbus Helicopters. This anti-torque system works by placing a multi-bladed fan within a duct in the tail of the helicopter. The duct is integrated into the tail boom and is usually made of a fiberglass skin. The fan consists of between 8-18 blades, depending on the airc...
No matter what type of helicopter is flying they all need some form of anti-torque system to prevent the fuselage from spinning around. The mechanical genius’ that have created the technical wonders you have just read about really do give helicopter operators a vast choice of systems to pick from. When flying in the bush I am always ‘Flying The Tai...
Oct 10, 2022 · The RPM of the tail rotor on the C2 is roughly 2150 RPM. This is a lot lower compared to the Fenestron RPM of roughly 3150 RPM (about 50% higher RPM!). This again, is to make sure the thrust output remains high enough to support the anti-torque required to lift an EC145 from the ground. Smaller blades need more speed to achieve the same amount ...
As it’s linked to the main engine, the tail rotor usually spins at a speed that is proportional to the speed of the main rotor. In most helicopters, the ratio between the main rotor and tail rotor resides somewhere between 3:1 to 6:1. This means that if the ratio is, for instance, 6:1, the tail rotor will spin six times as fast as the main rotor.
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Jan 11, 2023 · Sometimes, for safety reasons, the tail rotor is built right inside the tail (a design called a fenestron or fan-tail). Another alternative is called a NOTAR® ("no tail rotor"), which uses a jet of air, fired through a vent on the tail, to counteract the main rotor torque instead. If a helicopter has a single main rotor blade, it has to have a ...
