123 relations: Acceleration, Admiralty, Advance ratio, Airfoil, Alberto Santos-Dumont, Alfred George Greenhill, Angle of attack, Archimedes, Archimedes' screw, Atlantic Ocean, Axial fan design, Azimuth thruster, Azipod, Baffin Bay, Balancing machine, Bernoulli's principle, Blackwall, London, Blade element theory, Bushing (isolator), Camber (aerodynamics), Canoe, Cavitation, Composite material, Contra-rotating propellers, Counter-rotating propellers, Critical engine, Cyclorotor, Danish language, David Bushnell, David W. Taylor, Dimensionless quantity, Dover, Drag coefficient, Ducted propeller, Egyptians, European Union, Fan (machine), Fixed-wing aircraft, Fluid dynamics, Folding propeller, Folkestone, Francis Pettit Smith, Franklin's lost expedition, Friction, Froude number, Gondola, Grand Junction Canal, Gross register tonnage, Helicoid, Helix, ..., Hendon, Henry Wimshurst, HMS Erebus (1826), HMS Rattler (1843), HMS Terror (1813), Horsepower, Hydraulics, Hydrofoil, Hydroplane (boat), Hydrostatics, Hythe, Kent, Impeller, Ingeniøren, Interference fit, Isambard Kingdom Brunel, James Watt, John Ericsson, John Patch, Josef Ressel, Kitchen rudder, Lift coefficient, London, Manoeuvring thruster, Mathematical model, Modular propeller, Momentum theory, Newton's laws of motion, Normal (geometry), P-factor, Paddle steamer, Pleuger rudder, Propeller, Propeller walk, Propulsor, Pump-jet, Ramsgate, Relative wind, Reynolds number, River Thames, Rotation, Royal Navy, Saint John, New Brunswick, Santos-Dumont 14-bis, Scimitar propeller, Screw, Screw-propelled vehicle, Sculling, Shear pin, Shear stress, Shock wave, Single-blade propeller, Spline (mechanical), SS Archimedes, Stealth technology, Stefan Drzewiecki, Supercavitating propeller, Surveyor of the Navy, Sweden, Thrust, Torque, Tugboat, Turtle (submersible), Type 212 submarine, United States Navy, Vapor pressure, Variable-pitch propeller, William Froude, William John Macquorn Rankine, William Symonds, Wing, Wingtip device, Wright brothers, Yarmouth, Nova Scotia. Expand index (73 more) » « Shrink index
In physics, acceleration is the rate of change of velocity of an object with respect to time.
The Admiralty, originally known as the Office of the Admiralty and Marine Affairs, was the government department responsible for the command of the Royal Navy firstly in the Kingdom of England, secondly in the Kingdom of Great Britain, and from 1801 to 1964, the United Kingdom and former British Empire.
In aeronautics and marine hydrodynamics, the advance ratio is the ratio of the freestream fluid speed to the propeller, rotor, or cyclorotor tip speed.
An airfoil (American English) or aerofoil (British English) is the shape of a wing, blade (of a propeller, rotor, or turbine), or sail (as seen in cross-section).
Alberto Santos-Dumont (20 July 187323 July 1932, usually referred to as simply Santos-Dumont) was a Brazilian inventor and aviation pioneer, one of the very few people to have contributed significantly to the development of both lighter-than-air and heavier-than-air aircraft.
Sir (Alfred) George Greenhill, F.R.S. (29 November 1847 in London – 10 February 1927 in London), was a British mathematician.
In fluid dynamics, angle of attack (AOA, or \alpha (Greek letter alpha)) is the angle between a reference line on a body (often the chord line of an airfoil) and the vector representing the relative motion between the body and the fluid through which it is moving.
Archimedes of Syracuse (Ἀρχιμήδης) was a Greek mathematician, physicist, engineer, inventor, and astronomer.
An Archimedes' screw, also known by the name the Archimedean screw or screw pump, is a machine historically (and also currently) used for transferring water from a low-lying body of water into irrigation ditches.
The Atlantic Ocean is the second largest of the world's oceans with a total area of about.
An axial fan is a type of fan that causes gas to flow through it in an axial direction, parallel to the shaft about which the blades rotate.
An azimuth thruster is a configuration of marine propellers placed in pods that can be rotated to any horizontal angle (azimuth), making a rudder unnecessary.
Azipod is an electric podded azimuth thruster produced by ABB Group.
Baffin Bay (Inuktitut: Saknirutiak Imanga; Avannaata Imaa; Baie de Baffin), located between Baffin Island and the southwest coast of Greenland, is a marginal sea of the North Atlantic Ocean.
A balancing machine is a measuring tool used for balancing rotating machine parts such as rotors for electric motors, fans, turbines, disc brakes, disc drives, propellers and pumps.
In fluid dynamics, Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy.
Blackwall is a district in London, located in the London Borough of Tower Hamlets and also forms part of the Port of London.
Blade element theory (BET) is a mathematical process originally designed by William Froude (1878), David W. Taylor (1893) and Stefan Drzewiecki to determine the behavior of propellers.
A bushing or rubber bushing is a type of vibration isolator.
In aeronautics and aeronautical engineering, camber is the asymmetry between the two acting surfaces of an aerofoil, with the top surface of a wing (or correspondingly the front surface of a propeller blade) commonly being more convex (positive camber).
A canoe is a lightweight narrow vessel, typically pointed at both ends and open on top, propelled by one or more seated or kneeling paddlers facing the direction of travel using a single-bladed paddle.
Cavitation is the formation of vapour cavities in a liquid, small liquid-free zones ("bubbles" or "voids"), that are the consequence of forces acting upon the liquid.
Christmas is an annual festival commemorating the birth of Jesus Christ,Martindale, Cyril Charles.
The Christmas season, also called the festive season, or the holiday season (mainly in the U.S. and Canada; often simply called the holidays),, is an annually recurring period recognized in many Western and Western-influenced countries that is generally considered to run from late November to early January.
Christmas Eve is the evening or entire day before Christmas Day, the festival commemorating the birth of Jesus.
Christmas traditions vary from country to country.
A composite material (also called a composition material or shortened to composite, which is the common name) is a material made from two or more constituent materials with significantly different physical or chemical properties that, when combined, produce a material with characteristics different from the individual components.
Aircraft equipped with contra-rotating propellers, also referred to as CRP, coaxial contra-rotating propellers, or high-speed propellers, apply the maximum power of usually a single piston or turboprop engine to drive two coaxial propellers in contra-rotation (rotation about the same axis in opposite directions).
Counter-rotating propellers, also referred to as CRP, found on twin- and multi-engine propeller-driven aircraft, spin in directions opposite one another.
The critical engine of a multi-engine, fixed-wing aircraft is the engine a failure of which would most adversely affect the performance or handling abilities of an aircraft(§1.1).
A cyclorotor, cycloidal rotor, cycloidal propeller or cyclogiro, is a fluid propulsion device that converts shaft power into the acceleration of a fluid using a rotating axis perpendicular to the direction of fluid motion.
Danish (dansk, dansk sprog) is a North Germanic language spoken by around six million people, principally in Denmark and in the region of Southern Schleswig in northern Germany, where it has minority language status.
David Bushnell (August 30, 1740 – 1824 or 1826), of Westbrook, Connecticut, was an American inventor, a patriot, a scholar, and a veteran of the Revolutionary War.
David Watson Taylor (March 4, 1864 – July 28, 1940) was a U.S. naval architect and an engineer of the United States Navy.
In dimensional analysis, a dimensionless quantity is a quantity to which no physical dimension is assigned.
Dover is a town and major ferry port in the home county of Kent, in South East England.
In fluid dynamics, the drag coefficient (commonly denoted as: \scriptstyle C_\mathrm d\,, \scriptstyle C_\mathrm x\, or \scriptstyle C_\mathrm w\) is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment, such as air or water.
A ducted propeller, also known as a Kort nozzle, is a marine propeller fitted with a non-rotating nozzle.
Egyptians (مَصريين;; مِصريّون; Ni/rem/en/kīmi) are an ethnic group native to Egypt and the citizens of that country sharing a common culture and a common dialect known as Egyptian Arabic.
The European Union (EU) is a political and economic union of EUnum member states that are located primarily in Europe.
A mechanical fan is a powered machine used to create flow within a fluid, typically a gas such as air.
A fixed-wing aircraft is an aircraft, such as an airplane or aeroplane (note the two different spellings), which is capable of flight using wings that generate lift caused by the vehicle's forward airspeed and the shape of the wings.
In physics and engineering, fluid dynamics is a subdiscipline of fluid mechanics that describes the flow of fluids - liquids and gases.
A folding propeller is a type of propeller whose blades automatically fold out when the engine is turning, and then fold back (or "feather") when the engine stops.
Folkestone is a port town on the English Channel, in Kent, south-east England.
Sir Francis Pettit Smith (1808 – 12 February 1874) was an English inventor and, along with John Ericsson, one of the inventors of the screw propeller.
Franklin's lost expedition was a British voyage of Arctic exploration led by Captain Sir John Franklin that departed England in 1845 aboard two ships, and.
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.
In continuum mechanics, the Froude number is a dimensionless number defined as the ratio of the flow inertia to the external field (the latter in many applications simply due to gravity).
The gondola is a traditional, flat-bottomed Venetian rowing boat, well suited to the conditions of the Venetian lagoon.
The Grand Junction Canal is a canal in England from Braunston in Northamptonshire to the River Thames at Brentford, with a number of branches.
Gross register tonnage (GRT, grt, g.r.t., gt) or gross registered tonnage, is a ship's total internal volume expressed in "register tons", each of which is equal to.
The helicoid, after the plane and the catenoid, is the third minimal surface to be known.
A helix, plural helixes or helices, is a type of smooth space curve, i.e. a curve in three-dimensional space.
Hendon is a London suburb in the Borough of Barnet, northwest of Charing Cross.
Henry Wimshurst (1804–1884), Nature, No.
HMS Erebus was a designed by Sir Henry Peake and constructed by the Royal Navy in Pembroke dockyard, Wales in 1826.
HMS Rattler was a 9-gun wooden sloop of the Royal Navy and the first British warship to adopt a screw propeller powered by a steam engine.
HMS Terror was a specialized warship and a newly developed bomb vessel constructed for the Royal Navy in 1813.
Horsepower (hp) is a unit of measurement of power (the rate at which work is done).
Hydraulics (from Greek: Υδραυλική) is a technology and applied science using engineering, chemistry, and other sciences involving the mechanical properties and use of liquids.
A hydrofoil is a lifting surface, or foil, that operates in water.
A hydroplane (or hydro, or thunderboat) is a fast motorboat, where the hull shape is such that at speed, the weight of the boat is supported by planing forces, rather than simple buoyancy.
Fluid statics or hydrostatics is the branch of fluid mechanics that studies fluids at rest.
Hythe is a small coastal market town on the edge of Romney Marsh, in the district of Folkestone and Hythe on the south coast of Kent.
An impeller (also written as impellor or impellar) is a rotor used to increase (or decrease in case of turbines) the pressure and flow of a fluid.
Ingeniøren (full name: Nyhedsmagasinet Ingeniøren, literally The News Magazine "The Engineer") is a Danish weekly newspaper specialising in engineering topics.
An interference fit, also known as a press fit or friction fit is a fastening between two parts which is achieved by friction after the parts are pushed together, rather than by any other means of fastening.
Isambard Kingdom Brunel (9 April 1806 – 15 September 1859), was an English mechanical and civil engineer who is considered "one of the most ingenious and prolific figures in engineering history", "one of the 19th-century engineering giants", and "one of the greatest figures of the Industrial Revolution, changed the face of the English landscape with his groundbreaking designs and ingenious constructions".
James Watt (30 January 1736 (19 January 1736 OS) – 25 August 1819) was a Scottish inventor, mechanical engineer, and chemist who improved on Thomas Newcomen's 1712 Newcomen steam engine with his Watt steam engine in 1781, which was fundamental to the changes brought by the Industrial Revolution in both his native Great Britain and the rest of the world.
John Ericsson (born Johan) (July 31, 1803 – March 8, 1889) was a Swedish-American inventor, active in England and the United States, and regarded as one of the most influential mechanical engineers ever.
John Patch (1781 – August 27, 1861) was a Canadian fisherman who invented one of the first versions of the screw propeller.
Joseph Ludwig Franz Ressel (Josef Ludvík František Ressel; 29 June 1793 – 9 October 1857) was an Austrian forester and inventor of Czech-German descent, who designed one of the first working ship's propellers.
The Kitchen rudder is the familiar name for "Kitchen's Patent Reversing Rudders", a combination rudder and directional propulsion delivery system for relatively slow speed displacement boats which was invented in the early 20th century by John G. A. Kitchen of Lancashire, England.
The lift coefficient (CL, CN or Cz) is a dimensionless coefficient that relates the lift generated by a lifting body to the fluid density around the body, the fluid velocity and an associated reference area.
London is the capital and most populous city of England and the United Kingdom.
Manoeuvring thruster (bow thruster or stern thruster) is a transversal propulsion device built into, or mounted to, either the bow or stern, of a ship or boat, to make it more maneuverable.
A mathematical model is a description of a system using mathematical concepts and language.
A modular propeller is a forged propeller using complex composite materials that has replaceable parts.
In fluid dynamics, the momentum theory or disk actuator theory is a theory describing a mathematical model of an ideal actuator disk, such as a propeller or helicopter rotor, by W.J.M. Rankine (1865), Alfred George Greenhill (1888) and Robert Edmund Froude (1889).
New Year is the time or day at which a new calendar year begins and the calendar's year count increments by one.
New Year's Day, also called simply New Year's or New Year, is observed on January 1, the first day of the year on the modern Gregorian calendar as well as the Julian calendar.
In the Gregorian calendar, New Year's Eve (also known as Old Year's Day or Saint Sylvester's Day in many countries), the last day of the year, is on 31 December which is the seventh day of Christmastide.
Newton's laws of motion are three physical laws that, together, laid the foundation for classical mechanics.
In geometry, a normal is an object such as a line or vector that is perpendicular to a given object.
P-factor, also known as asymmetric blade effect and asymmetric disc effect, is an aerodynamic phenomenon experienced by a moving propeller,(Willits 3-49) that is responsible for the asymmetrical relocation of the propeller's center of thrust when an aircraft is at a high angle of attack.
A paddle steamer is a steamship or riverboat powered by a steam engine that drives paddle wheels to propel the craft through the water.
The Pleuger rudder (also known as a Dutch rudder) is a power assisted ship's rudder.
A propeller is a type of fan that transmits power by converting rotational motion into thrust.
Propeller walk is the term for a propeller's tendency to rotate a boat as well as accelerating it forwards or backwards.
A propulsor is a mechanical device that gives propulsion.
A view of pump-jets operating ''Discovery'' jet ski pump jet Rear view of pump-jet on a Mark 50 torpedo A pump-jet, hydrojet, or water jet is a marine system that creates a jet of water for propulsion.
Ramsgate is a seaside town in the district of Thanet in east Kent, England.
In aeronautics, the relative wind is the direction of movement of the atmosphere relative to an aircraft or an airfoil.
The Reynolds number is an important dimensionless quantity in fluid mechanics used to help predict flow patterns in different fluid flow situations.
The River Thames is a river that flows through southern England, most notably through London.
A rotation is a circular movement of an object around a center (or point) of rotation.
The Royal Navy (RN) is the United Kingdom's naval warfare force.
Saint John is the port city of the Bay of Fundy in the Canadian province of New Brunswick.
The 14-bis (Quatorze-bis), also known as Oiseau de proie ("bird of prey" in French), was a pioneer era canard biplane designed and built by Brazilian aviation pioneer Alberto Santos-Dumont.
A scimitar propeller is shaped like a scimitar sword, with increasing sweep along the leading edge.
A screw is a type of fastener, in some ways similar to a bolt (see Differentiation between bolt and screw below), typically made of metal, and characterized by a helical ridge, known as a male thread (external thread).
A screw-propelled vehicle is a land or amphibious vehicle designed to cope with difficult snow and ice or mud and swamp.
Sculling is the use of oars to propel a boat by moving the oars through the water on both sides of the craft, or moving a single oar over the stern.
A shear pin is a mechanical detail designed to allow a specific outcome to occur once a predetermined force is applied.
A shear stress, often denoted by (Greek: tau), is the component of stress coplanar with a material cross section.
In physics, a shock wave (also spelled shockwave), or shock, is a type of propagating disturbance.
A single-blade propeller may be used on aircraft to generate thrust.
Splines are ridges or teeth on a drive shaft that mesh with grooves in a mating piece and transfer torque to it, maintaining the angular correspondence between them.
SS Archimedes was a steamship built in Britain in 1839.
Stealth technology also termed low observable technology (LO technology) is a sub-discipline of military tactics and passive electronic countermeasures, which cover a range of techniques used with personnel, aircraft, ships, submarines, missiles and satellites to make them less visible (ideally invisible) to radar, infrared, sonar and other detection methods.
Stefan Drzewiecki (Джеве́цкий Степа́н Ка́рлович (Казими́рович); July 26, 1844 in Kunka, Podolia, Russian Empire (today Ukraine, April 23, 1938 in Paris) was a Polish and Russian scientist, journalist, engineer, constructor and inventor, working in France and the Russian Empire. He built the first submarine in the world with electric battery-powered propulsion (1884).
The supercavitating propeller is a variant of a propeller for propulsion in water, where supercavitation is actively employed to gain increased speed by reducing friction.
The Surveyor of the Navy also known as Department of the Surveyor of the Navy and originally known as Surveyor and Rigger of the Navy was a former principle commissioner and member of both the Navy Board from the inauguration of that body in 1546 until its abolition in 1832 and then a member Board of Admiralty from 1848-1859.
Sweden (Sverige), officially the Kingdom of Sweden (Swedish), is a Scandinavian country in Northern Europe.
Thrust is a reaction force described quantitatively by Newton's third law.
Torque, moment, or moment of force is rotational force.
A tug (tugboat or towboat) is a type of vessel that maneuvers other vessels by pushing or pulling them either by direct contact or by means of a tow line.
Turtle (also called American Turtle) was the world's first submersible vessel with a documented record of use in combat.
The German Type 212 class, also Italian Todaro class, is a highly advanced design of non-nuclear submarine developed by Howaldtswerke-Deutsche Werft AG (HDW) for the German and Italian navies.
The United States Navy (USN) is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States.
Vapor pressure or equilibrium vapor pressure is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases (solid or liquid) at a given temperature in a closed system.
A controllable-pitch propeller (CPP) or variable-pitch propeller is a type of propeller with blades that can be rotated around their long axis to change the blade pitch.
William Froude (28 November 1810 in Devon – 4 May 1879 in Simonstown, South Africa) was an English engineer, hydrodynamicist and naval architect.
Prof William John Macquorn Rankine LLD (5 July 1820 – 24 December 1872) was a Scottish mechanical engineer who also contributed to civil engineering, physics and mathematics.
Sir William Symonds CB FRS (24 September 1782, Bury St Edmunds – 30 March 1856, aboard the French steamship Nil, Strait of Bonifacio, Sardinia), page 345.
A wing is a type of fin that produces lift, while moving through air or some other fluid.
Wingtip devices are intended to improve the efficiency of fixed-wing aircraft by reducing drag.
The Wright brothers, Orville (August 19, 1871 – January 30, 1948) and Wilbur (April 16, 1867 – May 30, 1912), were two American aviators, engineers, inventors, and aviation pioneers who are generally credited with inventing, building, and flying the world's first successful airplane.
Yarmouth is a port town located on the Bay of Fundy in southwestern Nova Scotia, Canada.
2018 has been designated as the third International Year of the Reef by the International Coral Reef Initiative.
2019 (MMXIX) will be a common year starting on Tuesday of the Gregorian calendar, the 2019th year of the Common Era (CE) and Anno Domini (AD) designations, the 19th year of the 3rd millennium, the 19th year of the 21st century, and the 10th and last year of the 2010s decade.
Boat Propeller, Cleaver (propeller), Marine propeller, Propeller (marine craft), Propeller (marine), Propeller (ship), Propeller blade, Propeller engine, Propellers, Propellor, Propellors, Screw propeller, Screw propellor, Screw ship, Screw-Propeller, Screw-propeller, Skewback propeller, Skewback propellor, Surface piercing propeller, Ventilated propeller.