Propulsion 25 min read
Helicopter rotor
A helicopter main rotor or rotor system is the combination of several rotary wings (rotor blades) and a control system that generates the aerodynamic lift force that supports…
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Ducted fan
A ducted fan is a propulsion arrangement whereby a mechanical fan, which is a type of propeller, is mounted within a cylindrical shroud or duct. The duct…
Propulsion 8 min read
Propfan
A propfan or open rotor engine is a type of aircraft engine related in concept to both the turboprop and turbofan, but distinct from both. The European Aviation Safety Agency (EASA)…
Propulsion 2 min read
Aircraft fans
A fan is a propeller with a large number of blades. A fan therefore produces a lot of thrust for…
Propulsion 7 min read
Contra-rotating propeller
Contra-rotating propellers of a modified North American P-51 Mustang fitted with a Rolls-Royce Griffon engine. A contra-rotating propeller or contra-prop places two counter-rotating propellers…
Propulsion 4 min read
Counter-rotating propellers
Counter-rotating propellers are sometimes used on twin-, and other multi-engine, propeller-driven aircraft. The propellers of these wing-mounted engines turn in…
Propulsion 4 min read
Varying pitch
The purpose of varying pitch angle is to maintain an optimal angle of attack for the propeller blades, giving maximum…
Propulsion 4 min read
Theory and design of aircraft propellers
A well-designed propeller typically has an efficiency of around 80% when operating in the best regime. The efficiency of the…
Propulsion 5 min read
Propeller History
The earliest references for vertical flight came from China. Since around 400 BC,Chinese children have played with bamboo flying toys.This bamboo-copter is spun by…
Propulsion 1 min read
Propeller – aeronautics
An aircraft propeller, or airscrew, converts rotary motion from an engine or other mechanical power source, to provide propulsive force. It comprises a rotating power-driven hub, to…
Propulsion 4 min read
Hydromatic Propellers
Basic Operation Principles :The pitch changing mechanism of hydromatic propeller is a mechanical-hydraulic system in which hydraulic forces acting upon a piston…
Propulsion 3 min read
Governor Operation Condition
On-Speed ConditionThe on-speed condition exists when the propeller operation speed are constant . In this condition, the force of the flyweight (5)…