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Propulsion/control for VTOL vehicle
| Details |
Inventors: Van Nimwegen, Robert R.;
Assignee: The Garrett Corporation (Los Angeles, CA)
Primary Examiner: Frankfort; Charles E.
Assistant Examiner:
Attorney, Agent or Firm: McFarland; James W., Miller; Albert J., Omohundro; Herschel C.
A propulsion/control system for aircraft of the vertical takeoff and landing type having a body without wings or tail and relying entirely on fluid streams for effecting liftoff, propulsion, and control. The body has an air duct with an inlet adjacent the rear end and a downwardly directed outlet at each side, an engine driven fan being disposed in the duct at the inlet and a cascade of adjustable vanes at each outlet. Operation of the fan causes air to flow into the inlet, through the duct, and issue in streams from the outlets, the reaction of such streams imparting lifting and flight forces to the body. By adjusting the cascades of vanes, the effects of the forces can be varied to control the movement of the body. To further control the movement and stability of the body in the air, additional adjustable elements may be provided. For example, trim doors may be disposed in the air duct immediately in advance of the cascades of vanes, adjustment of the doors shifting the air streams flowing to and through the outlets relative the center of gravity of the body. In this manner better balance can be secured and shifts of the center of gravity, due to changes in loading or other causes, can be compensated. It may be found desirable also, to apply adjustable roll control vane elements to the body adjacent the sides of the outlets to partially oppose the streams of air flowing to and from the outlets to vary the reactionary forces. A shield is applied to the rear end of the body to confine inlet airflow to a predetermined path. |
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DETAILED DESCRIPTION I claim: 1.
In an aircraft of the verical takeoff and landing type having a body, the combination comprising: (a) means forming an air duct in said body with an inlet at a predetermined point in the body and downwardly directed outlets at opposit sides of said body; (b) an engine in said body; (c) a fan in said air duct adjacent said inlet and connected for operation by said engine to cause a flow of air through said duct; (d) a cascade of deflector blades in said duct adjacent each of said outlets, said blades being adjustable about axes disposed in a plane coextensive with the axis of rotation of said fan to direct airflow from said outlets at selected angles to the vertical; and (e) door means in said air duct in advance of said outlets, said door means being adjustable to change the effective positions of said outlets relative to the center of gravity of said body.
2.
The combination set forth in claim 1 in which the inlet of the air duct is disposed adjacent the rear of said body.
3.
The combination set forth in claim 2 in which a shield is secured to the rear of said body to direct air laterally into the inlet of said duct.
4.
The combination set forth in claim 1 in which the air duct is bifurcated at the downstream side of said fan to form branches leading to said downwardly directed outlets.
5.
The combination set forth in claim 1 in which the door means are disposed in said duct upstream of said cascades of deflector blades.
6.
The combination set forth in claim 1 in which said door means is disposed in said air duct above the plane containing the axes of adjustment of said deflector blades.
7.
The combination set forth in claim 6 in which said door means includes two elements for each outlet, one being disposed at the forward end of the outlet and the other at the rear of the outlet.
8.
The combination set forth in claim 1 in which additional deflector means are provided exteriorly of said body adjacent said outlets, said additional deflector means being adjustable to limit varying amounts of air flowing from said outlets and impart predetermined forces to said body
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