Aviation Dictionary
نوعی مانور پروازی که هواپیما به شکل یک 8 ناقص در بالا و پایین سطح افق حرکت می کند به صورت دو چرخش 180 درجه ای و در خلاف جهت هم.
مانور ابتدا با یک چرخش 180 درجه همراه با صعود شروع شده و سپس یک شیرجه مستقیم و بعد از آن چرخش 180 درجه خلاف چرخش قبلی همراه با صعود و در انتها با یک شیرجه مستقیم و کاهش ارتفاع دیگر پایان می یابد.
This maneuver derives its name from the manner in which the extended longitudinal axis of the airplane is made to trace a flight pattern in the form of a figure 8 lying on its side (a "Lazy" 8) . Objective of the Lazy 8 is to develop the pilot's feel for varying control forces, and the ability to plan and remain oriented while maneuvering the airplane with positive, accurate control. It requires constantly changing control pressures necessitated by changing combinations of climbing and descending turns at varying airspeeds. This is a maneuver often used to develop and demonstrate the pilot's mastery of the airplane in maximum performance flight situations.
A "Lazy 8" consists of two 180 degree turns, in opposite directions, while making a climb and a descent in a symmetrical pattern during each of the turns. At no time throughout the Lazy 8 is the airplane flown straight and level; instead, it is rolled directly from one bank to the other with the wings level only at the moment the turn is reversed at the completion of each 180 degree change in heading.