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Mon, Oct 12, 2026 / Ideas for a clearer worldINDEPENDENT INSIGHTS · PRACTICAL TOOLS · EXPLAINERS
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Basics

Basics

Airspeed Indicators

Readings from an airspeed indicator are used to estimate ground speed and to determine throttle settings for the…

August 28, 2021 · Rajil TL
Basics

Aircraft Instruments

Pitot-Static System The aircraft pitot-static system includes instruments that operate on the principle of the barometer. The system…

August 28, 2021 · Rajil TL
Basics

Hydraulics

Most helicopters, other than smaller piston-powered helicopters, incorporate the use of hydraulic actuators to overcome high control forces.…

August 28, 2021 · Rajil TL
Basics

Electrical Systems

The electrical systems, in most helicopters, reflect the increased use of sophisticated avionics and other electrical accessories. More…

August 28, 2021 · Rajil TL
Basics

Turbine & Accessory Gearbox

Turbine The two-stage turbine section consists of a series of turbine wheels that are used to drive the…

August 28, 2021 · Rajil TL
Basics

Compressor

The compressor may consist of an axial compressor, a centrifugal compressor, or combination of the two. An axial…

August 28, 2021 · Rajil TL
Basics

Engines

Reciprocating Engines Reciprocating engines, also called piston engines, are generally used in smaller helicopters. Most training helicopters use…

August 28, 2021 · Rajil TL
Basics

Antitorque Drive Systems

The antitorque drive system consists of an antitorque drive shaft and a antitorque transmission mounted at the end…

August 28, 2021 · Rajil TL
Basics

Antitorque System

Helicopters with a single, main rotor system require a separate antitorque system. This is most often accomplished through…

August 28, 2021 · Rajil TL
Basics

Freewheeling Unit

Since lift in a helicopter is provided by rotating airfoils, these airfoils must be free to rotate if…

August 28, 2021 · Rajil TL