US1770088A - Aircraft - Google Patents

Description

July 8, 1930. 1.. J. RASMUSSEN AIRCRAFT Fild July 8, 1929 Patented July 8, 1930 UNETED STATES LUDVIG J'. RASMUSSEN, OF SPOKANE, WASHINGTON AIRCRAFT Application filed July 8, 1929. Serial No. 376,558.

My present invention relates to improvements in aircraft of the monoplane type of flying machine, and the invention. particularly relates to the construction of the main plane and the construction and operation of its auxiliary planes or ailerons. In carryin'g out my invention I preferably utilize a monoplane having its major dimension or length alined with the longitudinal axis of the air craft or ship and its minor dimension or width disposed transversely of the ship, thus reducing the lateral spread and elongating the longitudinal axis of the existing well known types of monoplanes, but at the same '15 time maintaining an ample area for sustaining the ship in flight. By reducing the lateral spread of the ship it will be apparent that less side space is required for maneuvering the ship, and less storage space is require-d in the hangar for the ship. The stability of the ship in flight is enhanced by the disposition of the wing-spread fore and aft and at a substantial distance laterally of the ship, and a flexibility in manipulating or maneuvering the ship is provided by the arrangement of wing-spread.

In combination with the main plane of the ship I utilize a central longitudinal auxiliary plane, together with lateral ailerons, the

:20 iliary plane and ailerons being tiltable for elevating or depressing the nose of the ship, and for banking, turning, 626., respectively. The auxiliary plane and ailerons are of course under control of the pilot or aviator and the 15 control means are located in convenient position for use.

The invention consists in certain novel combinations and arrangements of parts as will hereinafter be more fully set forth and claimed.

In the accompanying drawing I have illustrated one complete example of the physical embodiment of my invention wherein the parts are combined and arranged according to the best mode I have thus far devised for the practical application of the principles of my invention.

Figure 1 is a side elevation of an air craft or ship embodying my invention, the movement of the tiltable plane and ailerons being indicated by dotted lines. Figure 2 is a top plan View of the ship. Figure 3 is a front elevation showing a portion of the fuselage and the landing gear, with the control means for the movable elements of the plane. Figure 4 is a detail of the plane adjusting mechanism. Figure 5 is a detail view showing one of the pulleys and its control cable.

In order that the general arrangement and relation of parts, together with the utility of my invention may readily be understood I have illustrated a monoplane type of air ship having the usual body or fuselage 1, landing wheels 2 and frame or rigging 3. The propeller .4, rudder 5 and elevator 6 are all of usual type, and the motor is indicated at 7 in front of the cockpit 8.

. The monoplane is spread over the top of the fuselage or body and comprises a forward, transversely extending portion 9 with its front edge incurved as at 9, and this forward spread of the plane which extends laterally'a suflicient distance from the sides of the fuselage, is of course symmetrically arranged, and supported from'the fuselage by the forward struts S. The struts project forwardly and laterally from the fuselage, Where they are supported, and their upper ends are attached to and support the plane from its underside From the outer ends of the front portion 9 ofthe plane extend two longitudinally disposed portions 10 and 11, arranged in parallelism at the opposite sides of a well 13, and within the well 13 the auxiliary plane 14 is located. The plane 14 is shown disposed centrally and-longitudinally of the fuselage, an ample space being provided between the plane and the fuselage to permit manipulation of the plane 14:, and the latter, it will be observed provides a spaced covering over the fuselage.

The lateral edges of the wings 10 and 11 are notched or opened as at 15, and two lateral ailerons 16 occupy these openings in the wings, said ailerons, like the auxiliary plane, being tiltable on an axis transversely of the ship. The auxiliary plane and the ailerons are supported from a transversely extending axle 17 that extends through the side wings 10 and 11 where it is supported, and the central auxiliary, plane and the ailerons are mounted on the axle as by hubs or brackets 18. A cable (or cables) 19 is connected to the plane 14 and cables 20 and 21 are connected to the aileronsin order that they may be tilted on their axle. The cables 20 and 21 pass around drums 22 that are mounted rigid to turn with a shaft 23 which is journaled in bearings in the frame 3, and the shaft is turned by the control lever 24 having its hub 25 fixedto the shaft.

The central auxiliary plane is tilted by means of a crank lever 26 journaled by its sleeve 27 on the shaft 23, and the crank arm 28 on the sleeve is connected with the pull cable 19. Thus by means of the two levers 24 and 26 the central auxiliary plane and the ailerons may be tilted. The cables 20 and 21 are so arranged that one cable pulls down the forward edge of an aileron while the other cable pulls down the rear edge, and vice versa, this difference in movement being accomplished by crossing one of the cables. The ship may be maneuvered with or without the assistance of the rudder 5 and elevator 6. I

Having thus fully described my invention,

what I claim as new and desire to secure by Letters Patent is; I

1. Inan aircraft the combination with its fuselage of a generally'U-shaped monoplane and struts supporting said monoplane from the fuselage, tiltable ailerons at the edges of the monoplane and a tiltable, centrally located longitudinally extending auxiliary plane, a single,.transverse axle for the ailerons and auxiliary plane, and means for tilting these members on their axis.

2. In an aircraft the combination with its fuselage of a generally U-shaped monoplane comprising a transversely extending front portion and laterally disposedlongitudinally extending wings forming a central longitudinal space, a transverse axle supported 1n said wlngs, an auxiliary plane mounted on said axle, a pair of lateral ailerons located in openings in the side edges of the wings and mounted on the axle, and control means 7 for tilting said auxiliary plane and ailerons. In testimony whereof I aflix' my signature.

' LUDVIG J RASMUSSEN.

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