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In aviation, the lawn dart effect occurs when fighter aircraft pilots accelerate horizontally at more than 1 standard gravity. The effect occurs when such extreme stimulation to the vestibular system leads to the perception that the aircraft is climbing, prompting the pilot to lower the aircraft's pitch attitude, or drop the nose. [1] [2]
For fixed-wing aircraft, ground effect is the reduced aerodynamic drag that an aircraft's wings generate when they are close to a fixed surface. Reduced drag when in ground effect during takeoff can cause the aircraft to "float" while below the recommended climb speed. The pilot can then fly just above the runway while the aircraft accelerates in ground effect until a safe climb speed is reached.
In fluid dynamics, a stall is a reduction in the lift coefficient generated by a foil as angle of attack increases. This occurs when the critical angle of attack of the foil is exceeded. The critical angle of attack is typically about 15°, but it may vary significantly depending on the fluid, foil, and Reynolds number.
Wind shear, sometimes referred to as wind gradient, is a difference in wind speed and/or direction over a relatively short distance in the atmosphere. Atmospheric wind shear is normally described as either vertical or horizontal wind shear. Vertical wind shear is a change in wind speed or direction with a change in altitude. Horizontal wind shear is a change in wind speed with a change in lateral position for a given altitude.
Landing is the last part of a flight, where a flying animal, aircraft, or spacecraft returns to the ground. When the flying object returns to water, the process is called alighting, although it is commonly called "landing", "touchdown" or "splashdown" as well. A normal aircraft flight would include several parts of flight including taxi, takeoff, climb, cruise, descent and landing.
In aviation, a go-around is an aborted landing of an aircraft that is on final approach or has already touched down. A go-around can either be initiated by the pilot flying or requested by air traffic control for various reasons, such as an unstabilized approach or an obstruction on the runway.
In flight dynamics a spin is a special category of stall resulting in autorotation about the aircraft's longitudinal axis and a shallow, rotating, downward path approximately centred on a vertical axis. Spins can be entered intentionally or unintentionally, from any flight attitude if the aircraft has sufficient yaw while at the stall point. In a normal spin, the wing on the inside of the turn stalls while the outside wing remains flying. It is possible for both wings to stall, but the angle of attack of each wing, and consequently its lift and drag, are different.
In aeronautics, dihedral is the angle between the left and right wings of an aircraft. "Dihedral" is also used to describe the effect of sideslip on the rolling of the aircraft.
Avianca Flight 410 was a flight that crashed at 13:17 on March 17, 1988, near Cúcuta, Colombia, which occurred shortly after takeoff when it flew into a mountain. All 143 people on board were killed. It was the deadliest aviation accident to occur in Colombia at the time.
An uncontrolled decompression is an undesired drop in the pressure of a sealed system, such as a pressurised aircraft cabin or hyperbaric chamber, that typically results from human error, structural failure, or impact, causing the pressurised vessel to vent into its surroundings or fail to pressurize at all.
Castle Aviation is a cargo airline and private passenger airline based in North Canton, Ohio, United States. It offers charter cargo and private passenger services, but primarily provides priority freight service for the Canadian parcel post service Purolator. Its only base is the Akron–Canton Airport.
In aviation, icing conditions are atmospheric conditions that can lead to the formation of water ice on an aircraft. Ice accretion and accumulation can affect the external surfaces of an aircraft – in which case it is referred to as airframe icing – or the engine, resulting in carburetor icing, air inlet icing or more generically engine icing. These phenomena may possibly but do not necessarily occur together. Both airframe and engine icing have resulted in numerous fatal accidents in aviation history.
The Canadair CL-84 "Dynavert", designated by the Canadian Forces as the CX-131, was a V/STOL turbine tiltwing monoplane designed and manufactured by Canadair between 1964 and 1972. Only four of these experimental aircraft were built with three entering flight testing. Two of the CL-84s crashed due to mechanical failures, with no fatalities occurring in either of the accidents. Despite the CL-84 being successful in the experimental and operational trials carried out between 1972 and 1974, none of the prospective customers placed any orders for the type.
In aeronautics, inertia coupling, also referred to as inertial coupling and inertial roll coupling, is a potentially catastrophic phenomenon of high-speed flight which caused the loss of aircraft and pilots before the design features to counter it were understood. It occurs when the inertia of a heavy fuselage exceeds the ability of the aerodynamic forces and moments generated by the wing and empennage to stabilize the aircraft. The problem became apparent as jet fighter aircraft and research aircraft were developed with narrow wingspans, that had relatively low roll inertia, caused by a long slender high-density fuselage, compared to the pitch and yaw inertias.
Human senses are not naturally geared for the inflight environment. Pilots may experience disorientation and loss of perspective, creating illusions that range from false horizons to sensory conflict with instrument readings or the misjudging of altitude over water.
United Air Lines Flight 297 was a scheduled flight from Newark International Airport to Atlanta that crashed 10 miles (16 km) southwest of Baltimore on November 23, 1962, killing all 17 people on board. An investigation concluded that the aircraft, a Vickers Viscount 745D turboprop airliner, had struck at least two whistling swans, which caused severe damage to the plane, resulting in a loss of control.
The Nanchang CJ-6 is a Chinese basic trainer aircraft designed and built by the Nanchang Aircraft Factory for use by the People's Liberation Army Air Force (PLAAF).
Alitalia Flight 404 (AZ404/AZA404) was an international passenger flight scheduled to fly from Linate Airport in Milan, Italy, to Zürich Airport in Zürich, Switzerland, which crashed on 14 November 1990. The Douglas DC-9-32, operated by Alitalia, crashed into the woodlands of Weiach as it approached Zurich Airport, killing all 46 people on board.
The United States capital, Washington, D.C., has been the site of several events in the nation's history of aviation, beginning from the time of the American Civil War, often for the purpose of promoting the adoption of new aeronautical technologies by the government. It has also been home to several aircraft manufacturers and aviation organizations, and many aerospace contractors have maintained a presence there as well.
On 29 May 2021, a Cessna 501 Citation I/SP crashed into the Percy Priest Lake in Tennessee. All seven occupants died, including diet guru Gwen Shamblin Lara and her husband, actor Joe Lara, who was piloting the aircraft.
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