DE383526C - Process for the production of hollow metal bodies for aircraft - Google Patents

Description

Process for the production of hollow metal bodies for aircraft. The invention gives another application for that provided by patent 362528 Protected manufacturing process of hollow metal bodies for aircraft and consists in that it is in the main patent for the manufacture of floats for seaplanes procedure described analogously to simplify the riveting of fuselages of metal aircraft Applies.

The conditions for fuselages of metal aircraft are similar to with the metal swimmers.

The production takes place either in such a way that the fuselage only consists of side walls and bottom openly assembled and finally by applying the top surface is covered or the fuselage is made of individual ring-shaped pieces as a tube manufactured. In any case, in the manufacturing processes that have been customary up to now, the Last riveted seams, especially with small hulls, very difficult to access, and one too Repairs face the greatest difficulties.

Here the invention improves by expediently one in the upper deck approximately or completely parallel to the longitudinal axis, essentially Leaves a continuous strip free from front to back, which only comes through at the end a closure plate is covered. However, such tracks can also be in the side walls and left free in the bottom and covered in the same way at the end.

In pursuit of the idea of the invention, the last riveted seams are then made Not only to make easily accessible - what has already been achieved - but entirely according to to be laid outside, the inner edges of those already connected to the side walls The epidermis is bent upwards and the covering membrane itself is designed accordingly, d. H. their edges bent upwards so that the rows of rivets are used to connect the Cover sheet are completely out of control. The riveting then takes place particularly expediently with the help of a placed on the edge point pointing upwards, im essential L / -shaped profile. An exemplary embodiment is shown in the drawing.

Fig. I shows a cross section through a fuselage, Fig. 2 shows a connection point on a slightly larger scale.

According to the invention, the hull body i shows a deployment track in the upper deck 2.

The production now takes place in such a way that initially this insert track remains free, with the actual fuselage also in the case of airplanes of normal size small dimensions is easily accessible. In the end, this deployment track is used, appropriately with a detachable connection. This deployment path can be used in the case of those in question Sheet thicknesses are gradually bent. The operational track can be said to be unwind so that every single stitch to be knocked is still easily accessible is.

The connection shown in Fig. 2 shows a particularly advantageous one Connection between fuselage body i and deployment lane 2. It is a special profile 3 pulled over the two sheets.

Claims (2)

PATENT CLAIMS: -1. Process for the production of hollow metal bodies for aircraft according to patent 362528, characterized in that according to the main patent Type of manufacture specified for swimmers of seaplanes hulls of metal planes be made in the same way, such that expediently on the top of the fuselage between the one-piece or firmly riveted edge sheets with the side walls approximately parallel to the longitudinal axis of the trunk, essentially v at the front continuous strip to the rear is left free, which only comes through at the end a closure plate is covered. 2. aircraft fuselage according to claim i, characterized in that that the edges of the closure plate and the associated edge strips of the upper deck are bent upwards in the width required for the rivet seam.