US1729970A - Wing for flying machines - Google Patents

Description

Oct. 1, 1929. A. SOLDENHOFF WING FOR FLYING MACHINES Filed Sept. 6. 1927 3 Sheets-Sheet 1 .[nvevzfom A. GoZcZnAoff Attorney Oct. 1, 1929. A. SOLDENHOFF 1,729,970

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Oct. 1,1929. SOLDENHQFF 1,729,970

WING FOR FLYING MACHINES Filed Sept. 6, 1927 s sheets-sheet 5 A Z'Cor-r/ey Inven or.-

Patented Oct. 1, 1929 ALEXANDER sonnmvnorr, or zunrcn, swrrznnnnm:

WING FOR FLYING MACHINES Application fled September 6, 1927, Serial No. 217,783, and in Germany December 8, 1925.

This invention relates to aeroplanes and other aerial machines and more particularly to the supporting planes or wings whereof the under-surfacesof which have one or more steps.

The invention differs from what is hitherto known in that the steps on the bottomside of the supporting plane or wing extend in rectilinear direction but obliquely with relation to the longitudinal edges of the plane or wing, or alternately in curves transversely in relation to the direction of fligh Further essential novel features reside in the fact that, in case of several steps, the same are assembled to meet at different angles, and furthermore in the provision of a rigid bracing or staying between the rear edge of the step of the plane and the rear edge of the plane or wing, if required for the purpose of enlarging the supporting area thereof.

The advantages obtained by this arrangement lies, as compared with the present state of the art, in the fact that such supporting surfaces possess immanent stability, that is to say, the relation of the points of pressure, in their totality, to the center of gravity of the machine will be retained in spite of the changing position of flight, and that the aircraft will obtain sufiicient propulsion in any gliding or floating position.

I will now proceed to describe my invention more in detail in connection with the embodiments thereof illustrated diagrammatically onv the accompanying drawings, it being understood that the right is reserved to embodiments other than those actually illustrated herein, to the full extent indicated by the general meaning of the terms in which the claims are expressed.

Figures 1 to 9 are top views of various forms of the invention,

Figs. 1 2, 3, 1" and 2 are cross sections through the wings of Figs. 1 to 7,- and Fig. 10 is a side view of an aeroplane.

In the drawings showing several constructions of the step arrangement according to the present invention, Figures 1 and 2 illustrate an embodiment in which the wing, rigid in itself, has on its under-face a curved face can,

stepping't," formed by the steps 3 and 4 or 5 or constituted by uniting the steps 3 and fl. A multiple stepping 6, 7 and 8 is shown in Figure 3 with the steps 6 and 8 meeting at difierent angles.

Figures 4, 5 and 6 illustrate similar steps 9, 10, 11, 12, 13 and 14 particularly for use in connection with supporting surfaces arranged in the form of an arrow-head.

Figure 7 illustrates an aircraft having wings with a double Figure 8 shows two steps 17 and 18 meeting a point in the axial line of'the aircraft and Figure 9 illustrates a modification in which a curved step 19 extends from the rear edge of the wing and from the axial line of the aircraft towards the free end of the wing.

Figure 10 shows an aircraft having wings arranged in arrow-head position, and the profiles a and d thereof.

According to the present invention, the wing either may be limited in the rear by the rear longitudinal edge of the step or a rigid bracing or staying means may be provided between the said longitudinal edge and the rear edge of the plane or wing for the purpose of increasing the area of the supportmg surface, as hereinbefore intimated.

According to-the present invention, the low er carrying surface of the wings can be bounded by the rear edge of the step or in case of a plurality of steps by the rear edge of the rearmost step, whereby thus between the rearmost edge of the wings and the edge of the rearmost step will form an open chamber, that is, an open surface will remain. This'open surhowever, be also covered and as a matter of fact by means of a rigid cover, which is secured on one side to the rear edge of the rear step and at the other side to the rear edge of the wings, whereby the rigidity is increased as also the carrying surface of the wings which likewise is increased.

I have herein described and shown several practical constructions of my present improvements, but it will be apparent that the latter are susceptible of embodiment in various other alternative forms and I, therefore, reserve the privilege of resorting to all such legitimate changes as may be fairly embodied within the spirit and scope of the invention as claimed.

I claim as my invention 1. A supporting plane or wing for aircraft comprising a step on the underside of the wing extending in rectilinear direction and obliquely in relation to the longitudinal edges of the supporting surface or in curves transversely with relation to the direction of flight.

2. A supporting plane or wing for aircraft comprising a plurality of steps on the underside of the wing extending in rectilinear direction and obliquely in relation to the longitudinal edges of the supporting surface or in curves transversely with relation to the direction of flight.

3. A supporting plane or wing for aircraft comprising a plurality of steps on the underside of the Wing extending in rectilinear direction and obliquely in relation to the longitudinal edges of the supporting surface or in curves transversely with relation to the direction of flight, said steps meeting each other at difierent angles.

4. A supporting plane or wing for aircraft comprising a step on the underside of the wing extending in rectilinear direction and obliquely in relation to the longitudinal edges of the supporting surface or in curves transversely with relation to the direction of'flight', the space between the rear edge of the step and the rear edge of the wing being covered with a rigid cover to strengthen the wing and to increase the surface thereof.

5. A supporting plane or wing for aircraft comprising a plurality of steps on the underside of the wing extending in rectilinear direction and obliquely in relation to the longitudinal edges of the supporting surface or in curves transversely with relation to the direction of flight, the space between the rear edge of the rearmost step and the rear edge of the wing being covered with a rigid cover to stren then the wing and to increase the surface t ereof.

In testimony whereof I affix my signature.

ALEXANDER SOLDENHOFF.

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