Cavitation noise: noise generated by the creation of gas bubbles by the turning of a ship's propellers.
A second G.P. was built, which was structurally stronger through the use of heavier gauge metal fittings and revised structure, with power supplied by two Rolls-Royce 190hp engines (later to be renamed Falcon) driving handed four bladed propellers in similar fashion to the first aircraft.
Located 3 miles northeast of Blakesburg, the Airpower Museum features approximately 25 mostly pre-World War II aircraft on display as well as the Library of Flight, and early flight simulators, propellers, engines, and original art.
Its original Piaggio propellers proved inadequate, but their replacement with Alfa Romeo-built propellers in 1941 resulted in the aircraft having improved performance which, in fact, exceeded expectations.
Some of the more successful British aircraft with contra-rotating propellers are the Avro Shackleton, powered by the Rolls-Royce Griffon engine, and the Fairey Gannet, which used the Double Mamba Mk.101 engine.
:1945 - the initial 25 Bf109 G-2 aircraft, from German production, with Hispano-Suiza 12Z-89 engines fitted, in lieu of Daimler-Benz DB 605A's, using VDM or Escher-Wyss propellers.
Hordern-Richmond merged with Lang Propellers of Weybridge, and a new factory was built at Haddenham, near Thame, Buckinghamshire.
It is powered by twin 1965 Cummins 220 marine diesel engines with gear-reduction transmissions and 32 inch four blade propellers.
As a secretary and note taker to the scientist she took dictation as he explored genetics, genealogy, telecommunications and marine architecture in the form of the world's fastest boat, the HD-4, a hydrofoil propelled by two of the most powerful aircraft engines and propellers then available.
The Douglas DC-4 piston aircraft with four propellers had made its first flight in 1945 and had 20,835 airframe hours.
Eden was given turbines to test their viability for future destroyer classes, with three propellers on each of her two shafts, to transmit the power at the high revolutions of the direct drive turbines, a feature of the earlier Turbinia.
Knapp went to the United Kingdom with his unit, the 92d Aero Squadron (Bombardment), in August 1918, but failed to see action in World War I due to a late shipment of propellers for his unit's Handley Page O/400 bombers.
In March 2013, a blade and hub from one of the aircraft's propellers was shown on the BBC television programme Antiques Roadshow.
In the 19th century, during the introduction of the steam engine, ships driven by propellers were differentiated from those driven by paddle-wheels by referring to the ship's screws (propellers).
Alfred Secqueville and Gaston Hoyau established their business at Gennevilliers in 1911 as a producer of aircraft engines and propellers.
Driven by 2 semi-submerged, supercavitating controllable, reversible propellers, achieved speeds in excess of 96 knots (approximately 110 mph) in the Gulf outside of St. Andrews Bay in Panama City, Florida.