Pilot's view of a Schempp-Hirth Janus-C glider. The yaw string (red wool) on the canopy and the turn and bank indicator (top center of the instrument panel) both show the glider is not in coordinated flight. The glider is slipping slightly nose-left. Coordinated flight can be restored by the pilot applying pressure to the right rudder pedal.
The Türk Yıldızları performing a coordinated turn. In team aerobatics the notion is especially important, as sideslip may likely result in an in-flight collision.
When an aircraft is flying with zero sideslip a turn and bank indicator installed on the aircraft's instrument panel usually shows the ball in the center of the spirit level. The occupants perceive no lateral acceleration of the aircraft and their weight to be acting straight downward into their seats.
Particular care to maintain coordinated flight is required by the pilot when entering and leaving turns.[2]
Airplanes and helicopters are usually equipped with a turn and bank indicator to provide their pilots with a continuous display of the lateral balance of their aircraft so the pilots can ensure coordinated flight.
Glider pilots attach a piece of coloured string to the outside of the canopy to sense the sideslip angle and assist in maintaining coordinated flight.
Pitch – in which the nose of the airplane moves up or down. This is typically controlled by the elevator at the rear of the airplane.
Yaw – in which the nose of the airplane moves left or right. This is typically controlled by the rudder at the rear of the airplane.
Roll (bank) – in which one wing of the airplane moves up and the other moves down. This is typically controlled by ailerons on the wings of the airplane.
Coordinated flight requires the pilot to use pitch, roll and yaw control simultaneously. See also flight dynamics.
Coordinating the turn
If the pilot were to use only the rudder to initiate a turn in the air, the airplane would tend to "skid" to the outside of the turn. [3]
If the pilot were to use only the ailerons to initiate a turn in the air, the airplane would tend to "slip" toward the lower wing.[3]
If the pilot were to fail to use the elevator to increase the angle of attack throughout the turn, the airplane would also tend to "slip" toward the lower wing.[1]
However, if the pilot makes appropriate use of the rudder, ailerons and elevator to enter and leave the turn such that sideslip and lateral acceleration are zero the airplane will be in coordinated flight. [3]
coordinated, flight, aviation, coordinated, flight, aircraft, flight, without, sideslip, pilot, view, schempp, hirth, janus, glider, string, wool, canopy, turn, bank, indicator, center, instrument, panel, both, show, glider, coordinated, flight, glider, slippi. In aviation coordinated flight of an aircraft is flight without sideslip 1 Pilot s view of a Schempp Hirth Janus C glider The yaw string red wool on the canopy and the turn and bank indicator top center of the instrument panel both show the glider is not in coordinated flight The glider is slipping slightly nose left Coordinated flight can be restored by the pilot applying pressure to the right rudder pedal The Turk Yildizlari performing a coordinated turn In team aerobatics the notion is especially important as sideslip may likely result in an in flight collision When an aircraft is flying with zero sideslip a turn and bank indicator installed on the aircraft s instrument panel usually shows the ball in the center of the spirit level The occupants perceive no lateral acceleration of the aircraft and their weight to be acting straight downward into their seats Particular care to maintain coordinated flight is required by the pilot when entering and leaving turns 2 Contents 1 Advantages 2 Instrumentation 3 Axes of rotation 4 Coordinating the turn 5 See also 6 ReferencesAdvantages EditCoordinated flight is usually preferred over uncoordinated flight for the following reasons it is more comfortable for the occupants it minimises the drag force on the aircraft it causes fuel to be drawn equally from tanks in both wings it minimises the risk of entering a spinInstrumentation EditAirplanes and helicopters are usually equipped with a turn and bank indicator to provide their pilots with a continuous display of the lateral balance of their aircraft so the pilots can ensure coordinated flight Glider pilots attach a piece of coloured string to the outside of the canopy to sense the sideslip angle and assist in maintaining coordinated flight Axes of rotation EditMain article Aircraft principal axes An airplane has three axes of rotation Pitch in which the nose of the airplane moves up or down This is typically controlled by the elevator at the rear of the airplane Yaw in which the nose of the airplane moves left or right This is typically controlled by the rudder at the rear of the airplane Roll bank in which one wing of the airplane moves up and the other moves down This is typically controlled by ailerons on the wings of the airplane Coordinated flight requires the pilot to use pitch roll and yaw control simultaneously See also flight dynamics Coordinating the turn EditIf the pilot were to use only the rudder to initiate a turn in the air the airplane would tend to skid to the outside of the turn 3 If the pilot were to use only the ailerons to initiate a turn in the air the airplane would tend to slip toward the lower wing 3 If the pilot were to fail to use the elevator to increase the angle of attack throughout the turn the airplane would also tend to slip toward the lower wing 1 However if the pilot makes appropriate use of the rudder ailerons and elevator to enter and leave the turn such that sideslip and lateral acceleration are zero the airplane will be in coordinated flight 3 See also EditAdverse yawReferences EditClancy L J 1975 Aerodynamics Pitman Publishing Limited London ISBN 0 273 01120 0 Coordinated flight Retrieved on 2008 09 19 a b Clancy L J Aerodynamics Section 14 6 Transport Canada Flight Training Manual 4th edition page 9 Gage Publishing 1994 ISBN 0 7715 5115 0 a b c Clancy L J Aerodynamics Section 14 7 Retrieved from https en wikipedia org w index php title Coordinated flight amp oldid 996506959, wikipedia, wiki, book, books, library,
