Abstract:
This invention relates generally to a lift augmentation system for an airframe. More particularly, the invention concerns the combination of extendable/retractable wing tips with an airframe for lift augmentation as well as wings that can pivot into a deployed position. Flexible surface elements may be rolled for storage and unrolled for deployment with at least one being on the suction surface of the wing and at least one being on the pressure surface of the wing.
Abstract:
A coaxial propulsion system has a primary propeller, a flow control element to reduce swirl, and a secondary propeller, mounted in series configuration. A connecting shroud directs the combined thrust. Said primary propeller and said secondary propeller may be connected to the same engine, or independent engines for greater reliability and performance. A coaxial jet fan system has a primary fan, a flow control element to reduce swirl, and a secondary fan, mounted in a series configuration. A connecting shroud directs the combined bypass and jet thrust. Further, a secondary shroud provides a primary bypass and a secondary bypass thrust, thereby establishing a greater level of control over the bypass ratio and engine efficiency.
Abstract:
The present invention discloses an aircraft capable of vertical take-off and landing. The aircraft comprises a single constant speed variable pitch propeller (3), a fuselage (2), an empennage (21, 22) and main wings (6) fixed to the fuselage (2); arranged similar to a conventional aircraft, but sized and positioned for vertical flight. A stator is positioned a minimal distance behind the propeller so as to compensate the torque caused by the propeller. The aircraft comprises high lift and high drag devices such as flaps (19) and a leading edge slat (7) on the main wings (6), and a fuselage spoiler (18). The positioning of the center of gravity (23) allows for a stable nose-up take-off and landing, NUTOL, position. The propeller generated airflow (PGA) over the main wings (6) and high lift and drag devices (7, 18, 19) creates lift and drag forces. Due to the NUTOL position, the sum of the propeller thrust, the lift forces and the drag forces on the aircraft results in a vertical force and no forward (horizontal) force, thus enabling vertical flight. Roll, pitch and yaw control is achieved by aerodynamic surfaces positioned inside and outside of the PGA.
Abstract:
La invención se refiere a una hélice que comprende una base (2, 15) y una pluralidad de palas (1, 14) que se extienden de dicha base de forma inclinada aguas arriba, es decir, en la dirección correspondiente a la dirección de marcha (D1) hacia delante de la nave. Las palas se extienden en una dirección que forma un ángulo agudo α con la dirección de marcha hacia delante, 10° ≤α≤80°. La invención también se refiere a un sistema de propulsión que incluye la hélice así como a una nave que incluye el sistema de propulsión.
Abstract:
A fluid flow control mechanism is provided for linearizing a fluid flow. The mechanism includes a frame having a cylindrical outer baffle which rotatably supports a plurality of propeller elements thereon. Each propeller element defines a respective sweep area as the propeller element is rotated which overlaps sweep areas of adjacent propeller elements. The outer baffle circumscribes an outer periphery of the collective sweeps areas of the respective propeller elements. The propeller elements rotate in the same direction whereby forces of curvature flow of adjacent propeller elements substantially cancel one another to linearize fluid flow through the mechanism. Additional baffles and infills within the areas of non blade sweeps may be provided for particular applications of the mechanism. In various applications, linear forces of vector flow are formed by integrating curvature forces of tangential flow and economy flow systems are formed by integrating curvature forces potentials on the planes of rotating propellers to provide the emission and induction flow with an insulation whereby fluid in the immediate vicinity of the mobile flow remains in an undisturbed static state. This allows a fluid propulsion assembly to be fitted with an outer utility mantle in the static zone of the field.
Abstract:
An engine arrangement (14) comprises a gas turbine engine unit (16) and first and second support members (18, 20). The support members (18, 20) extend from a structural component (24) of the engine casing (22) to support the engine unit in a position spaced from the body or airframe of the aircraft.
Abstract:
A vortex generating apparatus (60) has the capability of attracting and removably adhering one or more solid objects. The apparatus (60) comprises an impeller housed within a shell. The vortex attractor generates a vortical fluid flow (69a) generally in the form of a helical or spiral shaped flow. The fluid flow (69a) creates a low pressure region extending from the impeller end of the device. This low pressure region is contained by the walls of the fluid flow, thus directing the attractive forces toward a surface and minimizing effects of ambient fluid on the system. When the surface is part of a stationary object, wall, floor or ceiling, the vortex attractor may move toward and adhere to the surface. When the surface is part of a movable object, the vortex attractor may attract the object and maintain the attracted position.
Abstract:
Airplane comprising a fuselage with an empennage, wherein the fuselage is provided with wings and comprises a propulsion system (6) with propellers, wherein the propulsion system is integrated with the aft-fuselage mounted empennage forming a propulsive empennage. The 'propulsive empennage' preferably comprises two ring wings (7), each forming a duct wherein each duct is provided with at least one propeller mounted in the duct. The two ring wings are mounted symmetrically on sides of the fuselage.
Abstract:
This invention relates to propulsion systems. The Centrifugal Propeller is a dosed propulsion system with no external moving parts, other than a drive shaft, and has no external vents. The Centrifugal Propeller creates thrust by redirecting the reaction from centrifugal force so as to create directed thrust. The Centrifugal Propeller has significant advantages over other propulsion systems because it can be closed to the environment that it operates in. That means that it can operate in water, in air, or in outer space. It does not produce energy such as an electric motor but rather, converts that energy from a drive source such as an electric motor, into directed thrust. The invention's operation is not limited to closed environments. The Centrifugal Propeller will create thrust in any environment that its drive source will operate in. An electric motor can be completely closed to the environment it operates in and so would be the best source of power for the Centrifugal Propeller. Potential drive sources for the invention are: electric motors, internal combustion motors, turbines, and rockets. The Centrifugal Propeller will operate in outer space. An ideal match would be to use an electric motor running off of a nuclear generator, to turn the Centrifugal Propeller. In space the Centrifugal Propeller will continually accelerate and so space craft will have constant gravity while accelerating or decelerating. The Centrifugal Propeller will be used to propel and/or lift objects. It can be used to replace any current propulsion systems including but not limited to: cranes, jet engines, rocket engines, marine propellers and aircraft propellers.
Abstract:
A diverter duct for a propeller includes a second duct element having a semi-annular wedge shape, which is pivotably coupled to the first duct element, a first drive structure configured to drive a pivoting of the second duct element relative to the first duct element and a second drive structure configured to drive a rotation of the first and second duct elements about an axis of rotation of the propeller.