controllable-pitch propeller

controllable-pitch propeller

[kən¦trōl·ə·bəl ′pich prə′pel·ər]
(mechanical engineering)
An aircraft or ship propeller in which the pitch of the blades can be changed while the propeller is in motion; five types used for aircraft are two-position, variable-pitch, constant-speed, feathering, and reversible-pitch. Abbreviated CP propeller.

controllable-pitch propeller

A propeller whose pitch can be altered by the pilot in flight. Unlike in a constant-speed propeller, where the governor automatically controls the pitch, here the pilot carries out the pitch adjustments. Takeoff is made with a low blade angle, so that the engine develops maximum power. The blade angle is increased during cruise, so that the engine operates at a slower and more economical speed.
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The company won the Collier Trophy in 1933 for a controllable-pitch propeller patented in 1927.
Four "Caterpillars" and a funeral documents on the crash of the Huff-Daland XLB-5
For each vessel Wartsila will deliver a Wartsila 32 main engine, a reduction gearbox, a Lips controllable-pitch propeller and a Lips transverse tunnel thruster.
Wartsila wins order for two propulsion plants
The other three tugs use controllable-pitch propellers with twin azimuthing drives.
Tanker escorts for Valdez and Cook Inlet: strikingly different measures in place
In airplanes with controllable-pitch propellers, reducing propeller speed is an essential part of attaining best glide performance.
Making the field: planning a dead-stick approach works a lot better, when you employ the "key position" concept for turns and other decisions
The workshop will provide reconditioning services to owners and operators of marine engines, gearboxes, controllable-pitch propellers, thrusters and other ship equipment.
Wartsila Corporation opens new workshop in China
The propulsion engine output is transmitted via reduction gears with hydraulic clutches to the controllable-pitch propellers.
The resurgence of the ocean liner
These next generation towing vessels are outfitted with twin-screw, controllable-pitch propellers in nozzles and high lift rudders for a combination of performance and fuel economy.
Crowley Begins Ocean Class Tug Building Program at Bollinger Shipyard
Less apparent but still critical to maximum performance are things like good rudder coordination, retracting cowl flaps ("cooling drag" from excess air flowing across cylinders and engine components greatly increase drag) and--very important--propeller speed with controllable-pitch propellers.
From denial to final, II: things to do once you shake of the initial shock of an engine failure include nailing the best-glide airspeed, configuring the airplane and finding a place to land
In airplanes with controllable-pitch propellers, know the expected manifold pressure and rpm at take-off power.
Takeoff aborts: the properly prepared takeoff is spring-loaded to turn into an abort. Here's how to decide when to call the whole thing off
The vessels would each have a fully-redundant propulsion plant with two Wartsila 8L32 diesel engines, each driving Lips 4CF13 feathering controllable-pitch propellers through a Wartsila SCV95-P58 reduction gearbox.
Wartsila Corporation wins order to supply two propulsion plants

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