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

torque apply. Contra-rotating propellers should not be confused with counter-rotating propellers, a term which describes propellers rotating in opposite...

Contra-rotating propellers have benefits when providing thrust in marine applications. Contra-rotating propellers are used on torpedoes due to the natural...

which exerts force on the fluid. Most marine propellers are screw propellers with helical blades rotating on a propeller shaft with an approximately horizontal...

Mk 50 weapons. The Mk 48 has also been described as using contra-rotating marine propellers. However, it does have a fully-enclosing, conformal shroud...

directions even on the same wing. A contra-rotating propeller or contra-prop places two counter-rotating propellers on concentric drive shafts so that...

canoeing. Marine propellers are also known as "screws". There are many variations of marine screw systems, including twin, contra-rotating, controllable-pitch...

industry-first innovations to the marine engine market, including the sterndrive unit, contra-rotating propellers Duoprop, and Forward Drive. In 2005...

stabilizers at the ends of the booms to avoid turbulence from the contra-rotating propeller. The pilot was provided with an ejection seat and the aircraft...

for jet reaction pitch control Propellers: 6-bladed Curtiss-Wright, 16 ft 1 in (4.90 m) diameter contra-rotating propellers Performance Maximum speed: 253 mph...

XFY-1 featured a unique design with delta wings and three-bladed contra-rotating propellers powered by a turboprop engine. Test flights began in 1954, and...

Yakovlev Yak-52. The first attempts at constant-speed propellers were called counterweight propellers, which were driven by mechanisms that operated on centrifugal...

emergency with water injection) Propellers: 3-bladed 2x Aeroprop, 13 ft 6 in (4.11 m) diameter contra-rotating co-axial propellers Performance Maximum speed:...

coaxial contra-rotating propellers that are positioned at the leading edge of the inner sections of the wings. A set of contra-rotating propellers has eight...

different shapes and sizes, for example screw propellers, Voith-Schneider propellers, waterjets, ducted propellers, tunnel bow thrusters, and stern thrusters...

with contra-rotating propellers, which eliminated the torque effect. Early problems with the complex gearbox that was required for contra-rotating propellers...

cylinder twin row air-cooled radial engine Propellers: 6-bladed contra-rotating constant-speed propeller Performance Maximum speed: 418 mph (673 km/h...

was intended to be a "one-way" mission. The propellors were of the contra-rotating type. Air for the engine was drawn in through a hollow mast, 6 feet...

thrusters, the company also offers a line of contra-rotating (CRP) propulsion units with two propellers rotating in opposite directions. Finnish maritime...

the turbine. In most designs, two contra-rotating rings of turbine and propeller are used. Intermeshed contra-rotating turbines can act as the guide vanes...

called inward turning. Another possibility is contra-rotating propellers, where two propellers rotate in opposing directions on a single shaft, or on...

larger propellers from an efficiency standpoint. Maximum efficiency is reduced as disk loading is increased due to the rotating slipstream; using contra-rotating...

both designed around the Allison YT40 turboprop engine driving contra-rotating propellers. The British Hawker P.1127 took off vertically in 1960, and demonstrated...

Coupled-Proteus 710 Twin Proteus 710 engines driving contra-rotating propellers for the Bristol Brabazon I Mk.II. Marine Proteus Marinised Proteus engines have been...

and uncommon. Contra-rotating turbines. With axial turbines, some efficiency advantage can be obtained if a downstream turbine rotates in the opposite...

major conversion which included the installation of concentric contra-rotating propellers, a high-capacity silver-zinc battery and a larger main motor....

high disk loading. In a typical implementation, both proprotors must be rotating in order to maintain flight in helicopter mode. To guard against instances...

6 ft diameter (3.5 m; 139 in; 350 cm) coaxial contra-rotating propellers, with the front and back propellers (supplied by Hamilton Standard) each containing...

four cylinder reciprocating engine, in turn powering a pair of contra-rotating propellers. Though this system of propulsion gave the TI great speed and...

Canadair project personnel typically referred to it simply as the "84". Contra-rotating rotors on a vertical axis in the tail provided fore-and-aft (pitch)...