Boeing 737-3/4/5 aircraft spoilers are divided into two groups: ground spoilers and flying spoilers. The ground spoiler only acts as a ground deceleration; the flight spoiler can slide in the air and the ground.
Deceleration, and work with the aileron for roll control when high tilt rate flight is required. Five hydraulically driven spoilers are mounted on the upper surface of each wing and on the front of the trailing edge flaps. Numbered from left to right: left wing 0 to 4, right wing 5 to 9; flight spoiler is 2, 3, 6 and 7, and the remaining 6 are ground spoilers .
When the flight spoiler is operated as a compensation for the ailerons, only the flight spoiler on the wing on the aileron is raised, while the flight spoiler on the other wing is still attached to the wing surface. . When used as a speed reducer, both the left and right flight spoilers rise. In the air, not only for deceleration, but also to increase the aileron performance, the flight spoiler not only rises, but also the spoiler on the wing that deflects the aileron upwards at a larger angle, the other side The spoiler should be properly angled. The maximum angle at which the flight spoiler rises is 40°. The flight spoiler works only on hydraulic power and cannot be manned. The A system provides hydraulic operating power to the No. 3 and No. 6, B systems to No. 2 and No. 7.
The speed reducer control system is to raise the ground spoiler and the flight spoiler on the left and right wings to the highest position when the aircraft is landing or interrupted to take off, so as to increase the resistance and reduce the lift to reduce the aircraft slip. The purpose of the distance. The ground spoiler is used only after the aircraft is grounded and grounded. It is divided into the outer ground spoiler (numbered 0, 1, 8 and 9, installed outside the flight spoiler) and the inner ground spoiler (number They are number 4 and 5, respectively, mounted on the inside of the engine).