2 See wide area augmentation system.
5 See wide area augmentation system.
1 Wingtip vortices that are created when an airplane generates lift. When an airplane generates lift, air spills over the wingtips from the high pressure areas below the wings to the low pressure areas above them. This flow causes rapidly rotating whir
2 Wingtip vortices that are created when an airplane generates lift. When an airplane generates lift, air spills over the wingtips from the high pressure areas below the wings to the low pressure areas above them. This flow causes rapidly rotating whir
2 The boundary area formed when a warm air mass contacts and flows over a colder air mass. Warm fronts cause low ceilings and rain.
2 An area containing hazards to any aircraft not participating in the activities being conducted in the area. Warning areas may contain intensive military training, gunnery exercises, or special weapons testing.
5 An area containing hazards to any aircraft not participating in the activities being conducted in the area. Warning areas may contain intensive military training, gunnery exercises, or special weapons testing.
2 See weather and radar processing.
12 Slight twist built in towards the wingtips, designed to improve the stall characteristics of the wing.
1 A controllable valve in the tailpipe of an aircraft reciprocating engine equipped with a turbocharger. The valve is controlled to vary the amount of exhaust gases forced through the turbocharger turbine.
2 A controllable valve in the tailpipe of an aircraft reciprocating engine equipped with a turbocharger. The valve is controlled to vary the amount of exhaust gases forced through the turbocharger turbine.
12 Water present in the air while in its vapor form. It is one of the most important of atmospheric constituents.
12 The distance between two wave crests or wave troughs.
12 Special areas arranged by Letter of Agreement (LOA) with the controlling ATC wherein gliders may be allowed to fly under VFR in Class A Airspace at certain times and to certain specified altitudes.
2 A designated geographical location used for route definition or progress-reporting purposes and is defined in terms of latitude/longitude coordinates.
4 A predetermined geographical position used for route/instrument approach definition, progress reports, published VFR routes, visual reporting points or points for transitioning and/or circumnavigating controlled and/or special use airspace, that is defined relative to a VORTAC station or in terms of latitude/longitude coordinates.
5 A designated geographical location used for route definition or progress-reporting purposes and is defined in terms of latitude/longitude coordinates.
4 Area navigation waypoints are specified geographical locations, or fixes, used to define an area navigation route or the flightpath of an aircraft employing area navigation. Waypoints may be any of the following types: predefined, published, floating, user-defined, fly-by, or fly-over.
2 See wind correction angle.
5 See wind correction angle.
2 A device that provides real-time, accurate, predictive, and strategic weather information presented in an integrated manner in the National Airspace System (NAS).
5 A device that provides real-time, accurate, predictive and strategic weather information presented in an integrated manner in the National Airspace System (NAS).
2 Details surface conditions as derived from METAR and other surface observations.
1 The tendency of the aircraft to turn into the relative wind.
1 A measure of the heaviness of an object. The force by which a body is attracted toward the center of the earth (or another celestial body) by gravity. Weight is equal to the mass of the body times the local value of gravitational acceleration. One of
2 The force exerted by an aircraft from the pull of gravity.
5 The force exerted by an aircraft from the pull of gravity.
12 Acting vertically through the glider’s center of gravity, weight opposes lift.
1 The aircraft is said to be in weight and balance when the gross weight of the aircraft is under the max gross weight, and the center of gravity is within limits and will remain in limits for the duration of the flight.
1 A condition caused when forward yoke or stick pressure during takeoff or landing causes the aircraft to ride on the nose-wheel alone.
2 A differential global positioning system (DGPS) that improves the accuracy of the system by determining position error from the GPS satellites, then transmitting the error, or corrective factors, to the airborne GPS receiver.
4 A method of navigation based on GPS. Ground correction stations transmit position corrections that enhance system accuracy and add vertical navigation (VNAV) features.
5 A differential global positioning system (DGPS) that improves the accuracy of the system by determining position error from the GPS satellites, then transmitting the error, or corrective factors, to the airborne GPS receiver.
1 Correction applied to the course to establish a heading so that track will coincide with course.
2 The angle between the desired track and the heading of the aircraft necessary to keep the aircraft tracking over the desired track.
5 The angle between the desired track and the heading of the aircraft necessary to keep the aircraft tracking over the desired track.
1 Indicators that include a wind sock, wind tee, or tetrahedron. Visual reference will determine wind direction and runway in use.
2 Indicators that include a wind sock, wind tee, or tetrahedron. Visual reference will determine wind direction and runway in use.
1 A sudden, drastic shift in wind speed, direction, or both that may occur in the horizontal or vertical plane.
2 A sudden, drastic shift in windspeed, direction, or both that may occur in the horizontal or vertical plane.
5 A change in wind speed and/or wind direction in a short distance.
2 A twice daily forecast that provides wind and temperature forecasts for specific locations in the contiguous United States.
1 When the air moving through a propeller creates the rotational energy.
1 A truncated cloth cone open at both ends and mounted on a freewheeling pivot that indicates the direction from which the wind is blowing.
1 Airfoil attached to each side of the fuselage and are the main lifting surfaces that support the airplane in flight.
2 Airfoils attached to each side of the fuselage and are the main lifting surfaces that support the airplane in flight.
2 The wing root is the part of the wing on a fixed- wing aircraft that is closest to the fuselage. Wing roots usually bear the highest bending forces in flight and during landing, and they often have fairings to reduce interference drag between the win
1 The maximum distance from wingtip to wingtip.
2 The maximum distance from wingtip to wingtip.
1 A design feature incorporated into some wings to improve aileron control effectiveness at high angles of attack during an approach to a stall.
2 A design feature incorporated into some wings to improve aileron control effectiveness at high angles of attack during an approach to a stall.
1 The rapidly rotating air that spills over an airplane’s wings during flight. The intensity of the turbulence depends on the airplane’s weight, speed, and configuration. It is also referred to as wake turbulence. Vortices from heavy aircraft may be ex
2 The rapidly rotating air that spills over an airplane’s wings during flight. The intensity of the turbulence depends on the airplane’s weight, speed, and configuration. Also referred to as wake turbulence. Vortices from heavy aircraft may be extremel
2 A measurement of force used to produce movement.
5 A measurement of force used to produce movement.
7 The portion of the brain that receives information from the sensory register. This portion of the brain can store information in memory for only a short period of time. If the information is determined by an individual to be important enough to remember, it must be coded in some way for transmittal to long-term memory.
2 A standard series of aeronautical charts covering land areas of the world at a size and scale convenient for navigation (1:1,000,000) by moderate speed aircraft. Topographic information includes cities and towns, principal roads, railroads, distincti