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Dihedral (aeronautics)

Index Dihedral (aeronautics)

Dihedral angle is the upward angle from horizontal of the wings or tailplane of a fixed-wing aircraft. [1]

41 relations: Aircraft, Aircraft principal axes, Angle of attack, Angle of incidence (aerodynamics), Antonov An-124 Ruslan, Bücker Bü 131, Bücker Bü 133, Bücker Flugzeugbau, Beriev Be-12, Bird, Center of gravity of an aircraft, Center of mass, Charles Harvard Gibbs-Smith, Chord (aeronautics), Dihedral angle, Drop tank, Dutch roll, Dynamic pressure, Fighter aircraft, Fixed-wing aircraft, George Cayley, Glider (aircraft), Gull wing, Keel effect, Lockheed C-5 Galaxy, Materiel, McDonnell Douglas F-4 Phantom II, Office of Public Sector Information, Paragliding, Pendulum, Phugoid, Radian, Roll moment, Slip (aerodynamics), Stability derivatives, Swept wing, Tupolev Tu-134, Tupolev Tu-154, Vought F4U Corsair, Yaw (rotation), Zero-lift axis.


An aircraft is a machine that is able to fly by gaining support from the air.

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Aircraft principal axes

An aircraft in flight is free to rotate in three dimensions: yaw, nose left or right about an axis running up and down; pitch, nose up or down about an axis running from wing to wing; and roll, rotation about an axis running from nose to tail.

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Angle of attack

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.

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Angle of incidence (aerodynamics)

On fixed-wing aircraft, the angle of incidence (sometimes referred to as the mounting angle) is the angle between the chord line of the wing where the wing is mounted to the fuselage, and a reference axis along the fuselage (often the direction of minimum drag, or where applicable, the longitudinal axis).

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Antonov An-124 Ruslan

The Antonov An-124 Ruslan (Антонов Ан-124 "Руслан") (NATO reporting name: Condor) is a strategic airlift jet aircraft.

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Bücker Bü 131

The Bücker Bü 131 "Jungmann" (Young man) was a German 1930s basic training aircraft which was used by the Luftwaffe during World War II.

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Bücker Bü 133

The Bücker Bü 133 Jungmeister (Young master) was an advanced trainer of the Luftwaffe in the 1930s.

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Bücker Flugzeugbau

Bücker-Flugzeugbau GmbH was a German aircraft manufacturer founded in 1932.

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Beriev Be-12

The Beriev Be-12 Chayka ("Seagull", NATO reporting name: Mail) is a Soviet turboprop-powered amphibious aircraft designed for anti-submarine and maritime patrol duties.

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Birds, also known as Aves, are a group of endothermic vertebrates, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.

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Center of gravity of an aircraft

The center of gravity (CG) of an aircraft is the point over which the aircraft would balance.

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Center of mass

In physics, the center of mass of a distribution of mass in space is the unique point where the weighted relative position of the distributed mass sums to zero, or the point where if a force is applied it moves in the direction of the force without rotating.

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Charles Harvard Gibbs-Smith

Charles Harvard Gibbs-Smith (22 March 1909 – 3 December 1981) at Information Britain web site was a British polymath historian of aeronautics and aviation.

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Chord (aeronautics)

In aeronautics, chord refers to the imaginary straight line joining the leading and trailing edges of an aerofoil.

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Dihedral angle

A dihedral angle is the angle between two intersecting planes.

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Drop tank

In aviation, a drop tank (external tank, wing tank, or belly tank) is used to describe auxiliary fuel tanks externally carried by aircraft.

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Dutch roll

Dutch roll is a type of aircraft motion, consisting of an out-of-phase combination of "tail-wagging" and rocking from side to side.

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Dynamic pressure

Dynamic pressure (sometimes called velocity pressure) is the increase in a moving fluid's pressure over its static value due to motion.

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Fighter aircraft

A fighter aircraft is a military aircraft designed primarily for air-to-air combat against other aircraft, as opposed to bombers and attack aircraft, whose main mission is to attack ground targets.

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Fixed-wing aircraft

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.

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George Cayley

Sir George Cayley, 6th Baronet (27 December 1773 – 15 December 1857) was an English engineer, inventor, and aviator.

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Glider (aircraft)

A glider is a heavier-than-air aircraft that is supported in flight by the dynamic reaction of the air against its lifting surfaces, and whose free flight does not depend on an engine.

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Gull wing

The gull wing is an aircraft wing configuration with a prominent bend in the wing inner section towards the wing root.

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Keel effect

In aeronautics, the keel effect (also known as the pendulum effect or pendulum stability) is the result of the sideforce-generating surfaces being above (or below) the center of mass (which coincides with the center of gravity) in any aircraft.

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Lockheed C-5 Galaxy

The Lockheed C-5 Galaxy is a large military transport aircraft originally designed and built by Lockheed, and now maintained and upgraded by its successor, Lockheed Martin.

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Materiel, more commonly matériel in US English and also listed as the only spelling in some UK dictionaries (both pronounced, from French matériel meaning equipment or hardware), refers to military technology and supplies in military and commercial supply chain management.

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McDonnell Douglas F-4 Phantom II

The McDonnell Douglas F-4 Phantom II is a tandem two-seat, twin-engine, all-weather, long-range supersonic jet interceptor and fighter-bomber originally developed for the United States Navy by McDonnell Aircraft.

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Office of Public Sector Information

The Office of Public Sector Information (OPSI) is the body responsible for the operation of Her Majesty's Stationery Office (HMSO) and of other public information services of the United Kingdom.

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Paragliding is the recreational and competitive adventure sport of flying paragliders: lightweight, free-flying, foot-launched glider aircraft with no rigid primary structure.

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A pendulum is a weight suspended from a pivot so that it can swing freely.

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A phugoid or fugoid is an aircraft motion in which the vehicle pitches up and climbs, and then pitches down and descends, accompanied by speeding up and slowing down as it goes "downhill" and "uphill".

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The radian (SI symbol rad) is the SI unit for measuring angles, and is the standard unit of angular measure used in many areas of mathematics.

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Roll moment

In a vehicle suspension, roll moment is the moment of inertia of the vehicle's sprung mass (the portion of its weight supported by the suspension).

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Slip (aerodynamics)

A slip is an aerodynamic state where an aircraft is moving somewhat sideways as well as forward relative to the oncoming airflow or relative wind.

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Stability derivatives

Stability derivatives, and also control derivatives, are measures of how particular forces and moments on an aircraft change as other parameters related to stability change (parameters such as airspeed, altitude, angle of attack, etc.). For a defined "trim" flight condition, changes and oscillations occur in these parameters.

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Swept wing

A swept wing is a wing that angles either backward or occasionally forward from its root rather than in a straight sideways direction.

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Tupolev Tu-134

The Tupolev Tu-134 (NATO reporting name: Crusty) is a twin-engined, narrow-body, jet airliner built in the Soviet Union from 1966 to 1989.

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Tupolev Tu-154

The Tupolev Tu-154 (Tyполев Ту-154; NATO reporting name: "Careless") is a three-engine medium-range narrow-body airliner designed in the mid-1960s and manufactured by Tupolev.

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Vought F4U Corsair

The Vought F4U Corsair is an American fighter aircraft that saw service primarily in World War II and the Korean War.

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Yaw (rotation)

A yaw rotation is a movement around the yaw axis of a rigid body that changes the direction it is pointing, to the left or right of its direction of motion.

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Zero-lift axis

A cambered aerofoil generates no lift when it is moving parallel to an axis called the zero-lift axis (or the zero-lift line.) When the angle of attack on an aerofoil is measured relative to the zero-lift axis it is true to say the lift coefficient is zero when the angle of attack is zero.

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Redirects here:

Anhedral (aeronautics), Dihedral (aircraft).


[1] https://en.wikipedia.org/wiki/Dihedral_(aeronautics)

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