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  • Chapter 6: Flight Controls › Flight Control Systems › Primary Flight Controls

    Flight Control Systems Flight Controls Aircraft flight control systems consist of primary and secondary systems. The ailerons, elevator (or stabilator), and rudder constitute the primary control system and are required to control an aircraft safely during flight. Wing flaps, leading ... edge devices, spoilers, and trim systems constitute the secondary control system and improve the performance characteristics of the airplane or relieve the pilot of excessive control forces. Primary Flight Controls Aircraft control systems are carefully designed to provide adequate responsiveness…

  • Chapter 9: Techniques of Flight Instruction › Positive Exchange of Flight Controls › Procedure

    Procedure During flight training, there should always be a clear understanding between learners and flight instructors about who has control of the aircraft. The preflight briefing should include procedures for the exchange of flight controls. A positive three-step process ... exchange of flight controls between pilots is a proven procedure and one that is strongly recommended. When an instructor is teaching a maneuver to a learner, the instructor normally demonstrates the maneuver first, then has the learner follow along…

  • Chapter 1: Introduction to Flight Training › Safety Considerations › Use of Checklists

    pilots. During flight training, there should be a clear understanding between the learner and flight instructor of who has control of the aircraft. Prior to any flight, a briefing should be conducted that includes the procedures for the exchange ... flight controls. The following three-step process for the exchange of flight controls is highly recommended. When a flight instructor wishes the learner to take control of the aircraft, he or she should say to the learner, “You have…

  • Chapter 6: Flight Controls

    addition, in some large and fast aircraft, controls are boosted by hydraulically or electrically actuated systems. In both the fly-by-wire and boosted controls, the feel of the control reaction is fed back to the pilot by simulated means ... Current research at the National Aeronautics and Space Administration (NASA) Dryden Flight Research Center involves Intelligent Flight Control Systems (IFCS). The goal of this project is to develop an adaptive neural network-based flight control system. Applied directly to flight…

  • Chapter 14: Airport Operations › Collision Avoidance › ATC Instructions—“Line Up and Wait” (LUAW)

    ATC Instructions—“Line Up and Wait” (LUAW) ATC now uses the “line up and wait” (LUAW) instruction when a takeoff clearance cannot be issued immediately due to traffic or other reasons. The words “line up and wait” have replaced “position ... hold” in directing you to taxi onto a runway and await takeoff clearance. An ATC instruction to “line up and wait” is not a clearance for takeoff. It is only a clearance to enter the runway and hold in position…

  • Chapter 5: Maintaining Aircraft Control: Upset Prevention and Recovery Training › Slow Flight › Maneuvering in Slow Flight

    test. With an AOA just under the AOA which may cause an aerodynamic buffet or stall warning, the flight controls are less effective. [Figure 5-7] The elevator control is less responsive and larger control movements are necessary to retain ... control of the airplane. In propeller-driven airplanes, torque, slipstream effect, and P-factor may produce a strong left yaw, which requires right rudder input to maintain coordinated flight. The closer the airplane is to the 1G stall, the greater…