Abstract: A supercritical wing of the variety in which the compression shock is stabilized is being improved by providing a suction device, substantially along the entire wing span, right at the chord station of the upper-wing surface where intercepting the sonic line. Specific rules concerning the suction and suction slit are given. A small chord station range may be covered by a movable slot or several parallel-running slots. The surface contour may be modified right at a slot to, thereby stabilize the compression shock further. The invention shifts buffet onset to larger off-design Mach numbers and angles of attack.

Abstract: A locking dog for restraining pieces of cargo in the cargo area of an aircraft is disclosed having a frame in which a locking member is pivotally mounted and can be folded down by means of an actuator flap either upon passage of a piece of frieght or manually by pushing the actuator flap down into an overcenter position in which a spring locks the folded down locking member, the member being released upon pulling the actuator flap up and over the dead center position.

Abstract: The floor in an aircraft having a cargo space is provided with a conveyor system comprised of roller type tracks and an array system of rails superimposed upon the conveyor system. Latch elements positionable in relation to and connectable to the rails in variable positions are provided for sliding on the rails and being fastened thereto in selective positions. The latch elements are constructed for engaging pieces of freight, such as containers and pallets, for latching them into positions as predetermined by the positions of the rail elements.

Abstract: The hydraulic control valve as described includes two precontrol valves, each of them capable of operating the valve slide element in a primary control fashion while the respective other of the precontrol valve performs auxiliary functions so that in total two sets of outputs can be controlled whereby in each case the secondary control function can be carried out persistently or intermittently for the duration of persistence of the primary control function.

Abstract: The control valve for an hydraulic actuator is provided with a particular operating state for venting the hydraulic system, which state is attainable positively whenever the hydraulic pressure is inadequate, e.g., in the case of venting or presence of air bubbles; a pressure-monitoring element permits positively the slide element of the control valve to be placed into the venting disposition, in that a particular stop on the slide rod cooperates with a plunger extending from the monitoring cylinder and being subject to the differential force between a spring and system pressure.

Abstract: The tool includes a handle containing a motor whose shaft extends from a tool head and carries a ball-shaped or a barrel-shaped cutter. A cantilever arm extends from the tool head and has a guide element cantilevered from its free end. The guide element is pivoted about one or two axes, extending at right angles to the axis of cutter rotation.

Abstract: The device disclosed is a rapid action clamping element for locking, for example, latch elements to the floor in an aircraft provided with slot tracks. The element includes a base element holding two mushroom headed posts, there being a spring biased cylindrical post in between and a crown ring mounts the base element to the latch housing under determination of the degree of projection of the mushroom headed posts. A two position handle permits spring bias protraction of the cylindrical posts for insertion in one of the apertures in the slot track while permitting retention of a retraction against the spring in the other position.

Abstract: Large, spherically preshaped, thin workpieces are held and clamped in discrete, well-defined points under utilization of holding and clamping elements in which a portion of a head is universally pivotable about a point being the center of a sealing rim for a plenum chamber adjacent the engaging workpiece in which plenum chamber high pressure is established so that the workpiece can slide above the rim on an air cushion while it is being held through application of below-atmospheric suction pressure in the plenum.

Abstract: A spring-biased restraining member is retracted by means of a remotely positioned, manually operable lever being outside the cargo space; the linkage includes a hydraulic structure for delayedly returning the lever and the restraining member to the protracted position. The linkage unlocks a latch and enables the cargo to overrun the restraining member even from that side that is to lock the cargo when the restraining member is in its locked position. In the other direction, the restraining member is overridden by the cargo out of each position of the restraining member structure between the lever and the restraining member.

Abstract: A load-bearing part for aircraft or space vehicle is integrally made in a uniform manner from fiber-reinforced resin connecting endpieces of a small cross section merged via transition zones with a circular main- and central hollow. A particular method and particular tooling, for carrying out the method and making the hollow, are also disclosed.

Abstract: A frame structure is fastened to two rails which normally serve in an aircraft for fastening the seating. That frame structure, in turn, holds a frame element to which is mounted a spring-biased latch hook; the frame element can be fastened to the frame structure in different positions, the latter having also a fixed end hook. The structure as a whole establishes a removable YZ restrainer that is readily adaptable to differently wide cargo pallets or the like.

Abstract: A drawer-like frame has an open bottom which is provided with a lattice-kind construction of transverse bars extending from one wall to the opposite wall (e.g., a partition) and an elongated mounting plate across the transverse bars. Terminal elements have one of their ends bolted to such a mounting plate and the other end is bolted to a mounting bar at one of the walls.

Abstract: A rear-edge flap is held on an aircraft wing by means of two pantograph-like guide systems carrying swivel heads on which the flap is pivoted. Control arms extend from the guide systems to cause the flap to be pivoted and the guide systems extend the flap. Details concerning bearings and kinematics are disclosed. Application of the invention to all rear flaps of two aircraft wings is described.

Abstract: A gas turbine driving a compressor is supplemented by a centrifugal injection chamber which receives fuel as well as air compressed by the compressor; the chamber is configured as an annular nozzle, surrounding the turbine discharge duct, both feeding a mixing tube with thrust nozzle. A portion of the combustion gases is discharged via the annular nozzle, the remainder is fed via a control valve to the turbine.

Abstract: The aircraft is provided with an infrared sensor which is adjustable by means of feedback control so that its line of sight (image center) is and remains in line with the middle one of three infrared fires at and near the end of the runway. The craft is now maneuvered in such a way that its longitudinal axis is aligned with the horizontal component of the line of sight. After a particular distance has been reached, the aircraft descends while the image of the middle fire remains centered. The system uses existing equipment and is further supplemented to correct an initial gross deviation from the desired approach path.

Abstract: Pressure equalization between the upper and lower compartments of an aircraft is provided through normally covered openings along the edges of the floor of the upper compartment. The covers each are comprised of a double-flap arrangement in which one flap is constructed as two hinged panels with locking features in order to hold the other flap in a clinging position. The space between the flaps participates in the air-conditioning circulation. In the case of a pressure drop in the lower compartment, the pressure differential tends to fold the winged panels, thereby releasing the locks so that air pressure can be equalized through uncovering of the openings.