Abstract: A gravity-controlled flow valve of the pendulum-type, having a valve body with two chambers which communicate through gaps formed in a separating wall between the chambers and an adjoining outer circumferential surface of a rotary slide valve. A pendulum is connected to the rotary slide valve for movement within the valve body whereby flow apertures in a sleeve-like member are either opened or closed by the rotary slide valve in cooperation with flow apertures in that valve.

Abstract: Control arrangement including an actuator, such as an air motor, for operating the jet deflector flaps of a thrust reverser, and a pilot valve and a control valve for operating the actuator. The pilot valve controls flow of high pressure air from the jet engine to the control valve. The air flows through a first port in the control valve to the actuator. Air leaving the actuator flows through a second port in the control valve and then back to the pilot valve through which it is exhausted. A pilot valve member initially limits air flow through the second port, but as the flaps are deployed, the second port is gradually opened and the first port gradually closed. The operation is reversed to retract the flaps. The pilot valve may be operated by a switch responsive to contact of the nosewheel of the aircraft with a runway. The pilot and control valve may be included in a single cylindrical body with their valve members rotatable about the axis of the body.