Airspeed Indicators
Readings from an airspeed indicator are used to estimate ground speed and…
Aircraft Instruments
Pitot-Static System The aircraft pitot-static system includes instruments that operate on the…
Hydraulics
Most helicopters, other than smaller piston-powered helicopters, incorporate the use of hydraulic…
Electrical Systems
The electrical systems, in most helicopters, reflect the increased use of sophisticated…
Turbine & Accessory Gearbox
Turbine The two-stage turbine section consists of a series of turbine wheels…
Engines
Reciprocating Engines Reciprocating engines, also called piston engines, are generally used in…
Antitorque Drive Systems
The antitorque drive system consists of an antitorque drive shaft and a…
Antitorque System
Helicopters with a single, main rotor system require a separate antitorque system.…
Freewheeling Unit
Since lift in a helicopter is provided by rotating airfoils, these airfoils…


