A propeller speed reduction unit is a gearbox or a belt and pulley device used to reduce the output revolutions per minute (rpm) from the higher input...

device which controls the propeller pitch and thus speed is called a propeller governor or constant speed unit. Reversible propellers are those where the pitch...

variable "constant-speed" type. The propeller attaches to the power source's driveshaft either directly or through reduction gearing. Propellers can be made...

Aircraft equipped with contra-rotating propellers (CRP) coaxial contra-rotating propellers, or high-speed propellers, apply the maximum power of usually...

also be started manually by pulling a cable). After the Riedel unit has reached a speed of about 300 rpm, it automatically engages the compressor shaft...

reduces propeller efficiency at high rotational speed which, in turn, reduces power transmission from the aircraft's engine. In the case of a propeller, this...

Components Propeller governor Propeller speed reduction unit Spinner Terminology Autofeather Blade pitch Constant-speed Contra-rotating Counter-rotating...

Counter-rotating propellers (CRP) are propellers which turn in opposite directions to each other. They are used on some twin- and multi-engine propeller-driven...

an aircraft to be designed with a variable-pitch propeller, to give maximum thrust over a larger speed range. A fine pitch would be used during take-off...

is a gas turbine engine that drives an aircraft propeller. A turboprop consists of an intake, reduction gearbox, compressor, combustor, turbine, and a...

conversation of the pilots. The two devices may be combined into a single unit. Together, the FDR and CVR objectively document the aircraft's flight history...

the rated pressure and speed. In electronics, volumetric efficiency quantifies the performance of some electronic function per unit volume[of what?], usually...

starter/generator) at speeds above which the engine no longer requires starter assistance. Index of aviation articles Air Start Unit AVPIN - A monofuel used...

of British engines. Aircraft fitted with variable-pitch propellers or constant speed propellers are started in fine pitch to reduce air loads and current...

engine funnels a mixture of air and fuel at hypersonic speeds (more than five times the speed of sound) toward a ramp, which creates a shock wave. This...

constant speed drive (CSD) also known as a constant speed generator, is a type of transmission that takes an input shaft rotating at a wide range of speeds, delivering...

The power section consists of additional stages of turbines, a gear reduction system, and the shaft output. The gas generator creates the hot expanding...

Ford vehicles from 1973 through 1990, when a gear-reduction unit conceptually similar to the Chrysler unit replaced it. A variant on the electric starter...

an increased exhaust gas temperature, an increase in rotor speed due to the large reduction in work done by the stalled compressor and – in the case of...

Reverse thrust is also available on many propeller-driven aircraft through reversing the controllable-pitch propellers to a negative angle. The equivalent...

Patent 6619585 Helicopter single-blade rotor US Patent 5971322 - Propeller propulsion unit for aircraft in general Samara (fruit) single blade-like seed...

formation of ice. The air then exits through small holes in the wing edge. On propeller-driven aircraft, it is common to use bleed air to inflate a rubber boot...

cooling for the Pratt & Whitney J58. Propeller engines are most efficient for low speeds, turbojet engines for high speeds, and turbofan engines between the...

than a heavy gas turbine because the reduction of turbine diameters causes an increase in shaft rotational speed. Heavy gas turbine generators are too...

P.E. (1967). Two-Stroke Power Units. Newnes. Ricardo, Harry (1922). The Internal Combustion Engine. Vol. I: Slow-Speed Engines (1st ed.). London: Blackie...

pumps; should all the engines fail in flight the pilot will deploy a propeller-driven electric generator called a Ram-Air Turbine (RAT) which is concealed...

higher speed and greater fuel efficiency than piston and propeller aeroengines over long distances. A few air-breathing engines made for high-speed applications...

Propeller Speed Reduction Unit (PSRU) with helical gears in an oil bath. Final drive to the wooden 63 in (160 cm) diameter 2-blade Hoffman propeller was...

low speed or low Isp at high speed. It is in some respects similar to turbo-electric marine engines that allow propellers to turn at a different speed than...

spinner is an aircraft component, a streamlined fairing fitted over a propeller hub or at the centre of a turbofan engine. Spinners both make the aircraft...