List of aircraft upset factors
Encyclopedia
The U.S. FAA lists factors of aircraft upset in the Airplane Upset Recovery Training Aid as follows:
- TurbulenceTurbulenceIn fluid dynamics, turbulence or turbulent flow is a flow regime characterized by chaotic and stochastic property changes. This includes low momentum diffusion, high momentum convection, and rapid variation of pressure and velocity in space and time...
causes:- Clear air turbulenceClear Air TurbulenceClear Air Turbulence is an album by British jazz-rock fusion band Ian Gillan Band, released in 1977 with cover by Chris Foss. The album was reissued in 1989 by Virgin Records on CD.- Track listing :...
- Mountain waveMountain WaveMountain Wave is a security management company in the United States. It was acquired by Symantec on July 2, 2002....
turbulence - WindshearWindShearThe Windshear Full Scale Rolling Road Wind Tunnel is an automotive wind tunnel in Concord, North Carolina.In January 2008 Wind Shear, a division of US machine tool builder Haas Automat-80.7ion, completed construction on one of the most advanced automotive wind tunnels in the world. The full-scale...
- Thunderstorms
- Microbursts
- Wake turbulenceWake turbulenceWake turbulence is turbulence that forms behind an aircraft as it passes through the air. This turbulence includes various components, the most important of which are wing vorticies and jetwash. Jetwash refers simply to the rapidly moving gases expelled from a jet engine; it is extremely turbulent,...
- Aircraft icing
- Clear air turbulence
- Systems anomalies:
- Flight instrumentsFlight instrumentsFlight instruments are the instruments in the cockpit of an aircraft that provide the pilot with information about the flight situation of that aircraft, such as height, speed and altitude...
- Autoflight systems
- Flight control and other anomalies
- Flight instruments
- Pilot-Induced
- Instrument cross-check
- Adjusting attitude and power
- Inattention
- Distraction from primary cockpit duties
- VertigoVertigo (medical)Vertigo is a type of dizziness, where there is a feeling of motion when one is stationary. The symptoms are due to a dysfunction of the vestibular system in the inner ear...
or spatial disorientation - Pilot incapacitation
- Improper use of airplane automation
- Pilot techniques
- Pilot induced oscillation avoidance and recovery
- Combination causes:
- Swept-wing airplane fundamentals for pilots
- Flight dynamicsFlight dynamicsFlight dynamics is the science of air vehicle orientation and control in three dimensions. The three critical flight dynamics parameters are the angles of rotation in three dimensions about the vehicle's center of mass, known as pitch, roll and yaw .Aerospace engineers develop control systems for...
- Energy states
- Load factor (flight mechanics)
- Aerodynamic flight envelope
- Aerodynamic causes:
- Angle of attackAngle of attackAngle of attack is a term used in fluid dynamics to describe the angle between a reference line on a lifting body and the vector representing the relative motion between the lifting body and the fluid through which it is moving...
and stall - CamberCamberCamber may refer to a variety of curvatures and angles:* Camber angle, the angle made by the wheels of a vehicle* Camber thrust in bike technology* In the steel industry, the concavity of rolls...
- Control surface fundamentals
- Spoiler-type devices
- Trim
- Lateral and directional aerodynamic considerations
- Angle of sideslip
- Wing dihedral effects
- Pilot-commanded sideslip
- Crossover speed
- Static stability
- Maneuvering in pitch
- Mechanics of turning flight
- Lateral and directional maneuvering
- Flight at extremely low airspeeds
- High-altitude factors
- Stalls
- IcingIcingIcing may refer to:* Atmospheric icing, occurs when water droplets freeze on objects they contact, very dangerous for aircraft* Aufeis, also called icing, a sheet-like mass of layered ice that forms from the freezing of successive flows of groundwater...
- Automation during high altitude flight
- Primary flight display airspeed indicationsAirspeed indicatorThe airspeed indicator or airspeed gauge is an instrument used in an aircraft to display the craft's airspeed, typically in knots, to the pilot.- Use :...
- Human factors and high altitude upsets
- Angle of attack
- Additional considerations:
- Multi-engine flame out
- Core lock
- Engine rollback
- Flight at extremely high speeds
- Defensive, aggressive maneuvers
- Situation awareness
- Startle factor
- Negative G-forceG-forceThe g-force associated with an object is its acceleration relative to free-fall. This acceleration experienced by an object is due to the vector sum of non-gravitational forces acting on an object free to move. The accelerations that are not produced by gravity are termed proper accelerations, and...
- Use of full control inputs
- Counter-intuitive factors
- Previous training in non-similar airplanes
- Engine performance in upset situation
- Post-upset conditions