Ett fly på bakken. Boeing 737 (experimental).

Bakside:
P42056
Photo by The Boeing Company
Bildetekst:
New Boeing 737 twinjet's high-lift system is shown in the landing position. Trailing-edge flaps here are set at 40 degrees. Alternate flap settings are 25 and 30 degrees. The triple-slotted flaps combine with the leading-edge slats and flaps to change the shape of the airfoil for greater lift. This enables the 737 to use approach speeds as low as 115 miles an hour (184 km/h) for short-field operation. The leading-edge surfaces consist of three slat sections outboard on each wing and two one-piece flap sections inboard of the engines. They are extended by hydraulic pistons synchronized with the trailing-edge flap extension. Normal operation of all high-lift devices is through a hydraulic system powerd by engine drive pumps. Alternate leading edge operation is provided by a separate hydraulic system which uses an electric motor-driven pump. Alternate trailing edge extension is provided by electric motor. Extension of the flaps and slats produces an increase of approximately 21 per cent im effective wing area. Fuel tank vent can be seen on the lower wing panel slightly inboard of the wing tip lights. An additional light and static discharge mast are shown on the wing trailing edge.

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