Craft and method for assembling craft with controlled spin
First Claim
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1. A coanda craft, comprising:
- an impeller for generating a jet of fluid, the axis of the impeller defining an axial direction, and the jet of fluid defining a radial direction;
a canopy having a lift producing surface positioned with respect to the impeller and shaped to divert the jet to flow from a substantially radial direction towards a substantially axial direction; and
an aerofoil control surface separate from the impeller, the aerofoil control surface including;
a non-moveable air flow vane affixed to the canopy, at least a portion of the non-moveable air flow vane positioned upstream of the lift producing surface and having an upstream portion and a downstream portion, the upstream portion angled away from the radial direction, the downstream portion oriented in substantially the radial direction; and
a hinged air flow vane positioned adjacent the non-moveable air flow vane and configured to pivot with respect to the non-moveable air flow vane.
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Abstract
This invention relates to a craft designed to move through or on a surface of a fluid. It is believed to be principally of use in relation to airborne craft and missiles but the theory behind the invention is equally applicable for example to submarines.
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Citations
21 Claims
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1. A coanda craft, comprising:
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an impeller for generating a jet of fluid, the axis of the impeller defining an axial direction, and the jet of fluid defining a radial direction; a canopy having a lift producing surface positioned with respect to the impeller and shaped to divert the jet to flow from a substantially radial direction towards a substantially axial direction; and an aerofoil control surface separate from the impeller, the aerofoil control surface including; a non-moveable air flow vane affixed to the canopy, at least a portion of the non-moveable air flow vane positioned upstream of the lift producing surface and having an upstream portion and a downstream portion, the upstream portion angled away from the radial direction, the downstream portion oriented in substantially the radial direction; and a hinged air flow vane positioned adjacent the non-moveable air flow vane and configured to pivot with respect to the non-moveable air flow vane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 20)
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11. A method of controlling a flight orientation of a Coanda craft having an impeller for generating a jet of fluid and means for causing it to flow over a curved surface including a lift producing surface, the axis of the impeller defining an axial direction, and the jet of fluid defining a radical direction, the method comprising:
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selectively pivoting a plurality of aerofoil control surfaces each having a fixed vane and a pivoting vane, the control surfaces spaced separate from the impeller and positioned circumferentially around an outlet of the impeller, at least a portion of the fixed vane positioned upstream of the lift producing surface to control jet flow along the radial direction, the fixed vane having an upstream portion and a downstream portion, the upstream portion angled away from the radial direction, the downstream portion oriented in substantially the radial direction; and an adjusting mechanism for pivoting the pivoting vanes to control spin of the vehicle, the mechanism enabling a differential of flow over one portion of the radial portion of the curved surface as compared with another portion of the radial portion of the curved surface to thereby enable control of a flight orientation of the craft.
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15. An aircraft, comprising:
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an impeller for generating a jet of fluid, the axis of the impeller defining an axial direction, and the jet of fluid defining a radial direction; an airflow surface using the coanda effect and including a lift producing portion; a plurality of air flow vanes radially disposed about and not connected to the impeller to control airflow exiting the impeller along the radial direction, one or more of the plurality of vanes including; a fixed vane positioned upstream of the lift producing portion and having an upstream portion and a downstream portion, the upstream portion angled away from the radial direction, the downstream portion oriented in substantially the radial direction; and a hinged vane connected to the fixed vane to be downstream of the fixed vane and adjustable with respect to the fixed vane to thereby direct a flow of fluid emanating from the impeller to stabilize the aircraft. - View Dependent Claims (16, 17, 18, 19, 21)
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Specification