91 relations: Advance ratio, Airbus A400M Atlas, Airfoil, Airship, Alberto Santos-Dumont, Alphonse Pénaud, Angle of attack, Antonov An-70, Aspect ratio (aeronautics), Axial fan design, Bamboo-copter, Baopuzi, Betz's law, Blade pitch, Bonanza, Camber (aerodynamics), Cambridge University Press, Center of pressure (fluid mechanics), China, Constant-speed propeller, Control theory, Critical engine, Donald F. Lach, Drag (physics), Drag divergence Mach number, Ducted fan, Engine, Fairey Aviation Company, Fraxinus, French Academy of Sciences, Ge Hong, George Cayley, Ground-adjustable propeller, Helicopter rotor, Helix angle, Henri Dupuy de Lôme, Hiram Maxim, Homebuilt aircraft, Homebuilt machines, Inertia, Jean Baptiste Meusnier, Jean-Pierre Blanchard, Juglans, Langley Research Center, Leonardo da Vinci, Light aircraft, List of aircraft propeller manufacturers, Lockheed P-38 Lightning, Mach number, Mahogany, ..., Mechanic, Mechanical efficiency, Meteorology, Mikhail Lomonosov, National Advisory Committee for Aeronautics, Oak, P-factor, Power (physics), Propeller, Propeller governor, Propeller speed reduction unit, Prunus, Revolutions per minute, Russian Academy of Sciences, Santos-Dumont 14-bis, Schneider Trophy, Scimitar, Scimitar propeller, Shock wave, Steam engine, Taoism, The Great Exhibition, Thrust, Thrust reversal, Torque, Tractor configuration, Transonic, Tupolev Tu-95, Turboprop, Turkey (bird), V-Prop, Vought VE-7, William Bland, William F. Durand, William Froude, William John Macquorn Rankine, Wind tunnel, Wing, World War I, World War II, Wright brothers. Expand index (41 more) » « Shrink index
In aeronautics and marine hydrodynamics, the advance ratio is the ratio of the freestream fluid speed to the propeller, rotor, or cyclorotor tip speed.
The Airbus A400M Atlas Airbus Military, 6 July 2012.
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).
An airship or dirigible balloon is a type of aerostat or lighter-than-air aircraft that can navigate through the air under its own power.
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.
Alphonse Pénaud (31 May 1850 – 22 October 1880), was a 19th-century French pioneer of aviation design and engineering.
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.
The Antonov An-70 (Антонов Ан-70) is a four-engine medium-range transport aircraft, and the first aircraft to take flight powered only by propfan engines.
In aeronautics, the aspect ratio of a wing is the ratio of its span to its mean chord.
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.
The bamboo-copter, also known as the bamboo dragonfly or Chinese top (Chinese zhuqingting (竹蜻蜓), Japanese taketombo 竹蜻蛉), is a toy helicopter rotor that flies up when its shaft is rapidly spun.
The Baopuzi, written by the Jin dynasty scholar Ge Hong 葛洪 (283-343), is divided into esoteric Neipian 內篇 "Inner Chapters" and exoteric Waipian 外篇 "Outer Chapters".
Betz's law indicates the maximum power that can be extracted from the wind, independent of the design of a wind turbine in open flow.
Blade pitch or simply pitch refers to turning the angle of attack of the blades of a propeller or helicopter rotor into or out of the wind to control the production or absorption of power.
Bonanza is an NBC television western series that ran from 1959 to 1973.
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).
Cambridge University Press (CUP) is the publishing business of the University of Cambridge.
The center of pressure is the point where the total sum of a pressure field acts on a body, causing a force to act through that point.
China, officially the People's Republic of China (PRC), is a unitary one-party sovereign state in East Asia and the world's most populous country, with a population of around /1e9 round 3 billion.
A constant-speed propeller is a variable-pitch aircraft propeller that automatically changes its blade pitch in order to maintain a chosen rotational speed.
Control theory in control systems engineering deals with the control of continuously operating dynamical systems in engineered processes and machines.
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).
Donald Frederick Lach (pronounced "Lach, as in Bach") (September 24, 1917–October 26, 2000) was an American historian based as a professor in the Department of History at the University of Chicago.
In fluid dynamics, drag (sometimes called air resistance, a type of friction, or fluid resistance, another type of friction or fluid friction) is a force acting opposite to the relative motion of any object moving with respect to a surrounding fluid.
The drag divergence Mach number (not to be confused with critical Mach number) is the Mach number at which the aerodynamic drag on an airfoil or airframe begins to increase rapidly as the Mach number continues to increase.
A ducted fan is a propulsion arrangement whereby a mechanical fan, which is a type of propeller, is mounted within a cylindrical shroud or duct.
An engine or motor is a machine designed to convert one form of energy into mechanical energy.
The Fairey Aviation Company Limited was a British aircraft manufacturer of the first half of the 20th century based in Hayes in Middlesex and Heaton Chapel and RAF Ringway in Lancashire.
Fraxinus, English name ash, is a genus of flowering plants in the olive and lilac family, Oleaceae.
The French Academy of Sciences (French: Académie des sciences) is a learned society, founded in 1666 by Louis XIV at the suggestion of Jean-Baptiste Colbert, to encourage and protect the spirit of French scientific research.
Ge Hong (葛洪; b. 283 - d. 343 or 363) was an Eastern Jin Dynasty scholar, and the author of Essays on Chinese Characters.
Sir George Cayley, 6th Baronet (27 December 1773 – 15 December 1857) was an English engineer, inventor, and aviator.
A ground-adjustable propeller is a simple type of aircraft variable-pitch propeller where the blade angle can be adjusted between pre-set limits of fine and coarse pitch.
A helicopter main rotor or rotor system is the combination of several rotary wings (rotor blades) and a control system that generates the aerodynamic lift force that supports the weight of the helicopter, and the thrust that counteracts aerodynamic drag in forward flight.
In mechanical engineering, a helix angle is the angle between any helix and an axial line on its right, circular cylinder or cone.
Stanislas Charles Henri Dupuy de Lôme (15 October 18161 February 1885) was a French naval architect.
Sir Hiram Stevens Maxim (5 February 1840 – 24 November 1916) was an American-born British inventor, best known as the creator of the Maxim Gun, the first portable fully automatic machine gun.
Homebuilt aircraft, also known as amateur-built aircraft or kit planes, are constructed by persons for whom this is not a professional activity.
Homebuilt machines are machines built outside of specialised workshops or factories.
Inertia is the resistance of any physical object to any change in its position and state of motion.
Jean Baptiste Marie Charles Meusnier de la Place (Tours, 19 June 1754 — le Pont de Cassel, near Mainz, 13 June 1793) was a French mathematician, engineer and Revolutionary general.
Jean-Pierre Blanchard (4 July 1753 – 7 March 1809) was a French inventor, best known as a pioneer in balloon flight.
Walnut trees are any species of tree in the plant genus Juglans, the type genus of the family Juglandaceae, the seeds of which are referred to as walnuts.
Langley Research Center (LaRC or NASA Langley) located in Hampton, Virginia, United States, is the oldest of NASA's field centers.
Leonardo di ser Piero da Vinci (15 April 14522 May 1519), more commonly Leonardo da Vinci or simply Leonardo, was an Italian polymath of the Renaissance, whose areas of interest included invention, painting, sculpting, architecture, science, music, mathematics, engineering, literature, anatomy, geology, astronomy, botany, writing, history, and cartography.
A light aircraft is an aircraft that has a maximum gross takeoff weight of or less.
This is a list of aircraft propeller manufacturers both past and present.
The Lockheed P-38 Lightning is a World War II-era American piston-engined fighter aircraft.
In fluid dynamics, the Mach number (M or Ma) is a dimensionless quantity representing the ratio of flow velocity past a boundary to the local speed of sound.
Mahogany is a kind of wood—the straight-grained, reddish-brown timber of three tropical hardwood species of the genus Swietenia, indigenous to the AmericasBridgewater, Samuel (2012).
A mechanic is a tradesman, craftsman, or technician who uses tools to build or repair machinery.
Mechanical efficiency measures the effectiveness of a machine in transforming the energy and power that is input to the device into an output force and movement.
Meteorology is a branch of the atmospheric sciences which includes atmospheric chemistry and atmospheric physics, with a major focus on weather forecasting.
Mikhail Vasilyevich Lomonosov (ləmɐˈnosəf|a.
The National Advisory Committee for Aeronautics (NACA) was a U.S. federal agency founded on March 3, 1915, to undertake, promote, and institutionalize aeronautical research.
An oak is a tree or shrub in the genus Quercus (Latin "oak tree") of the beech family, Fagaceae.
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.
In physics, power is the rate of doing work, the amount of energy transferred per unit time.
A propeller is a type of fan that transmits power by converting rotational motion into thrust.
A propeller governor senses the speed of an aircraft engine and changes the propeller blade angle to maintain a selected RPM regardless of the operational conditions of the aircraft.
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 rpm of the powerplant.
Prunus is a genus of trees and shrubs, which includes the plums, cherries, peaches, nectarines, apricots, and almonds.
Revolutions per minute (abbreviated rpm, RPM, rev/min, r/min) is the number of turns in one minute.
The Russian Academy of Sciences (RAS; Росси́йская акаде́мия нау́к (РАН) Rossíiskaya akadémiya naúk) consists of the national academy of Russia; a network of scientific research institutes from across the Russian Federation; and additional scientific and social units such as libraries, publishing units, and hospitals.
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.
The Coupe d'Aviation Maritime Jacques Schneider, commonly called the Schneider Trophy or Schneider Prize (sometimes incorrectly referred to as the Schneider Cup, a different prize), was a trophy awarded annually (and later, biannually) to the winner of a race for seaplanes and flying boats.
A scimitar is a backsword or sabre with a curved blade, originating in the Middle East.
A scimitar propeller is shaped like a scimitar sword, with increasing sweep along the leading edge.
In physics, a shock wave (also spelled shockwave), or shock, is a type of propagating disturbance.
A steam engine is a heat engine that performs mechanical work using steam as its working fluid.
Taoism, also known as Daoism, is a religious or philosophical tradition of Chinese origin which emphasizes living in harmony with the Tao (also romanized as ''Dao'').
The Great Exhibition of the Works of Industry of All Nations or The Great Exhibition, sometimes referred to as the Crystal Palace Exhibition in reference to the temporary structure in which it was held, was an international exhibition that took place in Hyde Park, London, from 1 May to 15 October 1851.
Thrust is a reaction force described quantitatively by Newton's third law.
Thrust reversal, also called reverse thrust, is the temporary diversion of an aircraft engine's thrust so that it is directed forward, rather than backward.
Torque, moment, or moment of force is rotational force.
An aircraft constructed with a tractor configuration has the engine mounted with the airscrew in front of it so that the aircraft is "pulled" through the air, as opposed to the pusher configuration, in which the airscrew is behind and propels the aircraft forward.
In aeronautics, transonic (or transsonic) flight is flying at or near the speed of sound (at sea level under average conditions), relative to the air through which the vehicle is traveling.
The Tupolev Tu-95 (Туполев Ту-95; NATO reporting name: "Bear") is a large, four-engine turboprop-powered strategic bomber and missile platform.
A turboprop engine is a turbine engine that drives an aircraft propeller.
The turkey is a large bird in the genus Meleagris, which is native to the Americas.
The V-Prop is an automatic self-powering electronic variable-pitch propeller developed by Silence Aircraft, the manufacturers of the Silence Twister single-seat elliptical-winged kitplane.
The Vought VE-7 "Bluebird" was an early biplane of the United States.
William Bland (5 November 1789 – 21 July 1868) was a transported convict, medical practitioner and surgeon, politician, farmer and inventor in colonial New South Wales, Australia.
William Frederick Durand (March 5, 1859 – August 9, 1958) was a United States naval officer and pioneer mechanical engineer.
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.
A wind tunnel is a tool used in aerodynamic research to study the effects of air moving past solid objects.
A wing is a type of fin that produces lift, while moving through air or some other fluid.
World War I (often abbreviated as WWI or WW1), also known as the First World War, the Great War, or the War to End All Wars, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918.
World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although conflicts reflecting the ideological clash between what would become the Allied and Axis blocs began earlier.
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.