What is the purpose of Nacelles?
Nacelles serve a variety of purposes including drag reduction and directing airflow for the purposes of engine cooling and use in the combustion reactions inside engines. Nacelles are also used on horizontal axis wind turbines (HAWT).
Where does the word nacelle come from?
Etymology. Like many aviation terms, the word comes from French, in this case from a word for a small boat.
What are engine nacelles made of?
Metals, such as steel, aluminum, and titanium and its alloys, are preferred for the manufacture of aircraft nacelles on account of their strength and high temperature enduring capacity.
What is a jet engine pod called?
A podded engine is a jet engine in a pod, typically attached below the wing or to the tail of the aircraft. The pod itself is called a nacelle . Almost all modern large jet airplanes use engines in pods located a significant distance from the wing root for substantial wing bending relief.
What is DG in aviation?
The heading indicator (also called an HI) is a flight instrument used in an aircraft to inform the pilot of the aircraft’s heading. It is sometimes referred to by its older names, the directional gyro or DG, and also (UK usage) direction indicator or DI.
What is cowling aviation?
Definition of cowling : a removable metal covering that houses the engine and sometimes a part of the fuselage or nacelle of an airplane also : a metal cover for an engine.
Why are warp nacelles on pylons?
The nacelles aren’t responsible for providing any thrust whatsoever. Their sole function is to turn warp plasma from the warp core into a warp bubble. After that bubble is created and stable, the impulse engines are responsible for thrust at warp.
Why are engines mounted under the wing?
Structural strength. Wings want to bend upwards as lift increases, and to counteract this wing bending relief, fuel tanks are in the wings and engines are mounted under the wings. Due to this wing bending relief, much larger and heavier engines can therefore also be used.