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28 relations: Angle of attack, Attack helicopter, Bölkow, Bückeburg, Bellcrank, Drag (physics), Experimental aircraft, Federal Ministry of Defence (Germany), Fenestron, Hubschraubermuseum Bückeburg, Luftwaffe, MBB Bo 105, Pendulum, Phase lag (rotorcraft), Precession, Retreating blade stall, Siebel, Sikorsky S-69, Spar (aeronautics), Speed of sound, Tip jet, Turbomeca Marboré, Turbomeca Turmo, Turboshaft, Wave drag, Wilfried von Engelhardt, Wind tunnel, 1964 in aviation.
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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Attack helicopter
An attack helicopter is an armed helicopter with the primary role of an attack aircraft, with the capability of engaging targets on the ground, such as enemy infantry and armored fighting vehicles.
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Bölkow
Bölkow was a German aircraft manufacturer based in Stuttgart, Germany, and later Ottobrunn.
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Bückeburg
Bückeburg is a town in Lower Saxony, Germany, on the border with North Rhine Westphalia.
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Bellcrank
A bellcrank is a type of crank that changes motion through an angle.
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Drag (physics)
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.
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Experimental aircraft
An experimental aircraft is an aircraft that has not yet been fully proven in flight.
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Federal Ministry of Defence (Germany)
The Federal Ministry of Defence (Bundesministerium der Verteidigung), abbreviated BMVg, is a top-level federal agency, headed by the Federal Minister of Defence as a member of the Cabinet of Germany.
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Fenestron
A Fenestron (sometimes alternatively referred to as a fantail or a "fan-in-fin" arrangementLeishman 2006, p. 321.) is a protected tail rotor of a helicopter operating like a ducted fan.
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Hubschraubermuseum Bückeburg
The Hubschraubermuseum Bückeburg (Bückeburg Helicopter Museum) is located in the German town of Bückeburg, 30 miles (50 km) to the west of Hannover.
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Luftwaffe
The Luftwaffe was the aerial warfare branch of the combined German Wehrmacht military forces during World War II.
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MBB Bo 105
The Messerschmitt-Bölkow-Blohm Bo 105 is a light, twin-engine, multi-purpose helicopter developed by Bölkow of Ottobrunn, Germany.
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Pendulum
A pendulum is a weight suspended from a pivot so that it can swing freely.
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Phase lag (rotorcraft)
In the aerodynamics of rotorcraft such as helicopters, phase lag refers to the angular difference between the point at which a control input to a rotor blade occurs and the point of maximum displacement of the blade in response to that control input, said displacement occurring in the direction of rotor rotation.
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Precession
Precession is a change in the orientation of the rotational axis of a rotating body.
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Retreating blade stall
Retreating blade stall is a hazardous flight condition in helicopters and other rotary wing aircraft, where the rotor blade with the smaller resultant relative wind exceeds the critical angle.
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Siebel
Siebel was a German aircraft manufacturer founded in 1937 in Halle an der Saale.
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Sikorsky S-69
The Sikorsky S-69 (military designation XH-59) is an experimental co-axial compound helicopter developed by Sikorsky Aircraft as the demonstrator of the Advancing Blade Concept (ABC) under US Army and NASA funding.
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Spar (aeronautics)
In a fixed-wing aircraft, the spar is often the main structural member of the wing, running spanwise at right angles (or thereabouts depending on wing sweep) to the fuselage.
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Speed of sound
The speed of sound is the distance travelled per unit time by a sound wave as it propagates through an elastic medium.
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Tip jet
A tip jet refers to the jet nozzles at the tip of some helicopter rotor blades, to spin the rotor, much like a Catherine wheel firework.
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Turbomeca Marboré
The Turbomeca Marboré was a small turbojet engine produced by Turbomeca from the 1950s into the 1970s.
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Turbomeca Turmo
The Turbomeca Turmo is a French turboshaft engine developed for helicopter use.
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Turboshaft
A turboshaft engine is a form of gas turbine that is optimized to produce shaft power rather than jet thrust.
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Wave drag
In aeronautics, wave drag is a component of the aerodynamic drag on aircraft wings and fuselage, propeller blade tips and projectiles moving at transonic and supersonic speeds, due to the presence of shock waves.
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Wilfried von Engelhardt
Wilfried Baron von Engelhardt (11 September 1928, Liebenberg – 24 January 2015, Linz, Austria) was Chief Test Pilot of MBB, first flight of Bölkow Bo 46 and Bo 105.
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Wind tunnel
A wind tunnel is a tool used in aerodynamic research to study the effects of air moving past solid objects.
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1964 in aviation
This is a list of aviation-related events from 1964.
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Redirects here:
Boelkow BO 46, Boelkow Bo 46, Boelkow Boe 46, Bolkow BO 46, Bolkow Bo 46, Bölkow BO 46, Bölkow Bö 46.
References
[1] https://en.wikipedia.org/wiki/Bölkow_Bo_46
