Abstract: A sealing arrangement for sealing the clearance between the outlet end of a rigidly mounted jet pipe and the inlet end of another pipe tiltable three-dimensionally with respect to the rigidly mounted pipe, one of the pipes being formed with a ball socket-like surface. A ring shaped seal support is mounted on the pipe not having the ball socket-like surface. A sealing ring in the support is formed of segments which overlap one another in the circumferential and axial directions, the sealing ring protruding from the support toward the ball socket-like surface. A corrugated flat spring is located between the sealing ring and the base of the seal support to urge the sealing ring toward the ball socket-like surface. The sealing ring is pressed against the ball socket-like surface and one wall of the support by pressure in the pipes when the engine is running, and that wall of the support is provided with pressure equalizing pockets.

Abstract: A jet deflecting device has a first rotatable pipe section connected to the nd of an engine jet pipe and a second pipe section rotatably connected to the end of the first pipe section. Nozzle flaps are provided at the end of the second pipe section, and coupled to be moved inwardly and outwardly in response to axial movement of a nozzle actuating skirt slidably mounted at the end of the second pipe section. A first drive motor on the stationary jet pipe directly rotates the first pipe section by way of driving gears. A second drive motor is coupled by means of gears to rotate the second pipe section independently of rotation of the first pipe section. Actuating devices mounted on the engine jet pipe and providing a linear movement are coupled by way of actuating arms extending externally of the pipe sections to the nozzle actuated skirt for control of the nozzle flaps.