Autorotation is a term that is commonly used in aviation and refers to the ability of a helicopter to land safely in the event of an engine failure. It is a technique that is taught to all helicopter pilots and is an essential part of their training. In this article, we will explore the meaning and definition of autorotation, its origins, and its associations.
Definitions
Autorotation is defined as the controlled descent of a helicopter when the engine is not providing power. During autorotation, the rotor blades are allowed to spin freely, and the air flowing through them provides lift, allowing the helicopter to descend safely to the ground.
Origin
The concept of autorotation was first introduced in the early 1900s by Juan de la Cierva, a Spanish engineer and inventor. He developed the first successful autogyro, which used autorotation to achieve lift and stability. The technique was later adapted for use in helicopters and became an essential part of helicopter pilot training.
Meaning in different dictionaries
According to the Oxford English Dictionary, autorotation is defined as “the rotation of the blades of a helicopter in the absence of engine power, caused by the upward flow of air through the rotor.”
Merriam-Webster defines autorotation as “the rotation of the rotor blades of a helicopter during descent, in which the engine is disengaged and the rotor blades are driven solely by the upward flow of air.”
Associations
Autorotation is closely associated with helicopter safety and is an essential technique that all helicopter pilots must learn. It is also associated with emergency situations, as it is often used as a means of safely landing a helicopter in the event of an engine failure.
Synonyms
Some synonyms for autorotation include free descent, unpowered descent, and glide descent.
Antonyms
There are no direct antonyms for autorotation, as it is a unique technique used only in helicopters.
The same root words
The root words of autorotation are “auto,” meaning self, and “rotation,” meaning the action of rotating.
Example Sentences
- During autorotation, the helicopter pilot must maintain a constant rate of descent to ensure a safe landing.
- The helicopter’s engine failed, and the pilot had to perform an autorotation to land safely.
- Autorotation is an essential part of helicopter pilot training and is taught to all aspiring pilots.