DE1267992B - Vertical takeoff and landing aircraft with a twin-flow jet engine with side swivel nozzles - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY GERMAN 4fflj9Wl · PATENT OFFICE Int. α .:

B64d

EDITORIAL

German class: 62 b -37/02

Number:
File number:
Registration date:
Display day:

P 12 67 992.4-22
June 24, 1966
May 9, 1968

The invention relates to a vertical take-off and landing aircraft with a twin-flow jet engine, whose thrust jets are directed through pivotable nozzles arranged on the side of the fuselage.

Airplanes that take off and land vertically are known which have a twin-flow jet engine are equipped with swivel nozzles on both sides of the fuselage. With airplanes of this type, the resulting thrust vector must pass through or near the center of gravity, to get moment equilibrium. An optional jet heating of the cold jet in the Vertical and hovering flight to increase the thrust would be the resulting thrust vector immigrate to an inadmissible extent.

The inventor set himself the task of eliminating this disadvantage.

According to the invention, when the cold flow is heated, its exit is shifted backwards. According to a first embodiment, a further pair of swivel nozzles is provided between the cold and hot nozzles is arranged and a monitored by a control body connection to the has cold nozzles, which is equipped with a device for heating the cold jet.

According to a further embodiment, the swivel nozzles for the cold flow are at the end of pipe arms stored, which in turn are pivotable about transverse axes.

The invention is shown schematically in the drawing in two exemplary embodiments.

In the fuselage of an aircraft 1 (FIG. 1), in the area of the aircraft's center of gravity S, a twin-flow jet engine 2 with pairs of swivel nozzles 3, 4, 5 is attached. The hot jets emerge from the pair of swivel nozzles 5 at the end of the engine 2, while the pair of swivel nozzles 3 is intended for the cold jets. The middle pair of swivel nozzles 4 is connected to the front pair of swivel nozzles 3 by connecting lines 6. In the normal state, a control device (not shown) closes the connecting lines 6, and all of the cold jets emerge from the front pair of swiveling nozzles 3. When the cold jet is heated up, for which the possibility is provided in the connecting lines 6 (not shown), the control device opens the connecting lines 6 and closes the feed lines to the front swivel nozzles 3. The heated jet now flows out through the middle swivel nozzle pair 4.

In order to avoid that the jets from the front swivel nozzle pair 3 in cruise flight onto the mid-vertical take-off and landing aircraft with a twin-flow jet engine with lateral
Swivel nozzles

Applicant:

United Flugtechnische Werke G. m. B. H.

formerly »Weser« aircraft construction / Focke-Wulf /

Heinkel aircraft construction,

2800 Bremen 1, Hünefeldstr. 1-5

Named as inventor:

Hans-Justus Meier, 2800 Bremen

If the swivel nozzles 4 impinge, they are arranged somewhat higher than the swivel nozzles 3.

In the embodiment according to FIG. 2 the swivel nozzles 7 are mounted at the end of pipe arms, which can be pivoted about bearing 8. In the position shown in solid lines, the swivel nozzles are after adjusted in front. When the beam is heated, they are moved to a rear (dash-dotted) position. It's in the Swivel nozzles provided a deflection device, not shown, according to the desired Thrust direction can be adjusted.

In the way described last, the moment equilibrium can be achieved for each load case and flight condition produced and optionally a heating of the cold beam can be carried out, whereby a larger lift or smaller engines are generated in vertical and hover flight Can be used.

Claims (3)

Patent claims: 1.Airplane taking off and landing vertically with a twin-flow jet engine, its heatable cold flow through the front and its hot gases through the rear side Swivel nozzles emerge, characterized in that when the cold flow is heated, its exit is displaced backwards is. 2. Aircraft according to claim 1, characterized by a further pair of swivel nozzles (4), 809 5W105 which is arranged between the cold and hot nozzles (3 and 5, respectively) and one of one Control body has monitored connection (6) to the cold nozzles, which with a device is equipped to heat the cold beam. 3. Aircraft according to claim 1 ,. characterized, that the swivel nozzles (7) for the cold jets are mounted at the end of pipe troughs, which in turn are in bearings (8) around transverse axes are pivotable. 1 sheet of drawings 809 548/105 4.68 © Bundesdruckerei Berlin