Abstract: The structural or bridge element is constructed from a sheath (1) made of textile fabric, preferably of low extensibility, which is covered in an airtight manner with a flexible plastic. Secured longitudinally within the sheath 1 are a plurality of textile webs of low extensibility in an assembly of mutually parallel planes. The thread profile of first layers 4 of the fabric of the webs 3 is turned through approximately 45° in relation to the longitudinal axis of the bridge element. Second layers 5, each arranged within the same web 3 as the first layer 4, have a thread profile which is selected to be parallel and perpendicular to the longitudinal axis of the bridge element. Bars 6 are arranged on the outside of the sheath 1, respectively in each plane of the webs 3, and are secured within shackles on the sheath 1. The sheath 1 is supplied with compressed air within the range of a few 100 mB.

Abstract: The structural or bridge element is constructed from a sheath (1) made of textile fabric, preferably of low extensibility, which is covered in an airtight manner with a flexible plastic. Secured longitudinally within the sheath 1 are a plurality of textile webs of low extensibility in an assembly of mutually parallel planes. The thread profile of first layers 4 of the fabric of the webs 3 is turned through approximately 45° in relation to the longitudinal axis of the bridge element. Second layers 5, each arranged within the same web 3 as the first layer 4, have a thread profile which is selected to be parallel and perpendicular to the longitudinal axis of the bridge element. Bars 6 are arranged on the outside of the sheath 1, respectively in each plane of the webs 3, and are secured within shackles on the sheath 1. The sheath 1 is supplied with compressed air within the range of a few 100 mB.

Abstract: The additional device according to the invention for floats for seaplanes and floatplanes comprises four airtight bladders (10) to which compressed air can be applied, and which extend along the float and rest on side surfaces (11) of the float, which essentially consists of a box (1). The bladders (10) are composed of a flexible material with little expansion capability or an elastomer material, and are entirely covered with an elastic and watertight textile skin (9). In the state when compressed air is applied, the edges of the box (1), that is to say the side edges (8) and the keel edge (7), are smoothed. Thus, as soon as the aircraft has become airborne, the drag coefficient cD of the float can be considerably reduced. The compressed air is released for the aircraft to land on and take off from water, so that the edges (7, 8) can produce their effect for directional stability (keel edge (7)) and in order to prevent the Coanda effect (side edges 8)).

Abstract: The pneumatic float according to the invention comprises an airtight outer skin (5), which can be inflated with compressed air via a valve (21). Webs (6) extend essentially over the entire length of the float, which are joined to the outer skin (5) along the lines (1) and on the one hand divide the inside of the float into intercommunicating chambers (7), and on the other hand give the float the desired contours (14), stability and stability against bending. The webs can comprise single or multiple layers of low-stretch woven material or plastics material foils. To improve directional stability in operation and as a protection against damage to the outer skin (5) the float has a keel rail (8), for instance comprising plastics material, and glued on. To avoid the Coanda effect two side rails (9) are attached in a similar manner.

Abstract: The additional device according to the invention for floats for seaplanes and floatplanes comprises four airtight bladders (10) to which compressed air can be applied, and which extend along the float and rest on side surfaces (11) of the float, which essentially consists of a box (1). The bladders (10) are composed of a flexible material with little expansion capability or an elastomer material, and are entirely covered with an elastic and watertight textile skin (9). In the state when compressed air is applied, the edges of the box (1), that is to say the side edges (8) and the keel edge (7), are smoothed. Thus, as soon as the aircraft has become airborne, the drag coefficient cD of the float can be considerably reduced. The compressed air is released for the aircraft to land on and take off from water, so that the edges (7, 8) can produce their effect for directional stability (keel edge (7)) and in order to prevent the Coanda effect (side edges 8)).

Abstract: Modules that can be impinged upon by compressed air are arranged in front of and behind a box-shaped spar, whereby the modules have an airtight top skin and an airtight bottom skin and first plates that can transmit thrust are disposed therebetween. Each first plate has a console on each side. The console extends along the entire length of a profile of a wing. One to two flexible tubes that are airtight and only slightly extensible are inserted between two such consoles. When the tubes are subjected to pressure, they cause the first plates to move substantially parallel to each other and provide the wing with a desired camber. An aerodynamic profile is defined by rigid sheeting, whereby the sheeting is secured to the top skin, bottom skin, and the sheet in an articulated manner by the second plates that are provided with hinges.

Abstract: An adaptive pneumatic wing for a fixed wing aircraft having an airtight envelope (8) defined by a top skin (1) and a bottom skin (2) subdivided internally by a plurality of cells extending longitudinally of the wing, portions of the cells being airtight forming wing structure adapted to provide an aileron function, a landing flap function, and to change the shape of the wing profile.