# US 10,501,197 B2 · Fluidic propulsive system

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- Number: US 10,501,197 B2
- Document ID: US10501197B2
- Status: Granted
- Kind: B2
- Application number: 15/221,389
- Filed: 2016-07-27
- Published: 2017-03-02
- Granted: 2019-12-10
- Earliest claimed: 2015-09-02
- Assignees: Jetoptera, Inc.
- Applicants: Jetoptera, Inc.
- Inventors: Andrei Evulet
- Web page: https://patentgrep.com/patent/US10501197B2

## CPC

- B64D 33/04: of exhaust outlets or jet pipes
- B64C 9/38: Jet flaps
- B64C 15/00: Attitude, flight direction, or altitude control by jet reaction
- B64C 15/14: the jets being other than main propulsion jets (jet flaps B64C9/38)
- B64C 21/00: Influencing air flow over aircraft surfaces by affecting boundary layer flow
- B64C 21/04: for blowing
- B64C 23/00: Influencing air flow over aircraft surfaces, not otherwise provided for
- B64C 23/005: {by other means not covered by groups B64C23/02 - B64C23/08, e.g. by electric charges, magnetic panels, piezoelectric elements, static charges or ultrasounds}
- B64C 39/024: {of the remote controlled vehicle type, i.e. RPV}
- B64D 27/10: of gas-turbine type (jet aircraft B64D27/16)
- B64D 27/18: within, or attached to, wings
- B64D 29/02: associated with wings
- B64D 33/02: of combustion air intakes
- B64U 30/10: Wings
- B64U 50/15: using combustion exhausts other than turbojets or turbofans, e.g. using rockets, ramjets, scramjets or pulse-reactors
- F02C 3/04: having a turbine driving a compressor (power transmission arrangements F02C7/36; control of working fluid flow F02C9/16)
- F02C 6/04: Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output (F02C6/18 takes precedence {; for a fluidised-bed combustor F02C3/205})
- F02K 1/002: {with means to modify the direction of thrust vector (F02K1/54 takes precedence; thrust vectoring of rockets F02K9/80)}
- F02K 1/36: having an ejector
- B64C 2230/04: by actively generating fluid flow
- B64C 2230/06: by explicitly adjusting fluid flow, e.g. by using valves, variable aperture or slot areas, variable pump action or variable fluid pressure
- B64C 2230/16: by blowing other fluids over the surface than air, e.g. He, H, O2 or exhaust gases
- B64D 2033/0273: {for jet engines}
- B64U 10/25: Fixed-wing aircraft (VTOL aircraft B64U10/20)
- B64U 20/65: Composite materials
- B64U 30/00: Means for producing lift; Empennages; Arrangements thereof
- F05D 2220/90: in vehicles adapted for vertical or short take off and landing (v/stol vehicles)
- Y02T 50/10: Drag reduction
- Y02T 50/30: Wing lift efficiency
- Y02T 50/40: Weight reduction
- Y02T 50/60: Efficient propulsion technologies, e.g. for aircraft
- B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64C: AEROPLANES; HELICOPTERS
- B64U: UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00)
- F02K: JET-PROPULSION PLANTS (features of jet-propulsion plants common to gas-turbine plants, air intakes or fuel supply control of air-breathing jet-propulsion plants F02C7/00, F02C9/00)
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A propulsion system coupled to a vehicle. The system includes a convex surface, a diffusing structure coupled to the convex surface, and at least one conduit coupled to the convex surface. The conduit is configured to introduce to the convex surface a primary fluid produced by the vehicle. The system further includes an intake structure coupled to the convex surface and configured to introduce to the diffusing structure a secondary fluid accessible to the vehicle. The diffusing structure comprises a terminal end configured to provide egress from the system for the introduced primary fluid and secondary fluid.

## Claims

### Claim 1

A propulsion system coupled to a vehicle, the system comprising:
a convex surface having a perimeter and a plurality of recesses;
a diffusing structure coupled to the convex surface;
at least one conduit coupled to the convex surface and configured to introduce to the convex surface via multiple nozzles distributed along the entirety of the perimeter a primary fluid produced by the vehicle; and
an intake structure coupled to the convex surface and configured to introduce to the diffusing structure a secondary fluid accessible to the vehicle, wherein the nozzles are downstream of the intake structure, and wherein the diffusing structure comprises a terminal end configured to provide egress from the system for the introduced primary fluid and secondary fluid.

### Claim 2 (depends on 1)

The system of claim 1, wherein the at least one conduit comprises an array of nozzles arranged in at least one of a curved orientation, a spiraled orientation, and a zigzagged orientation.

### Claim 3 (depends on 1)

The system of claim 1, wherein the intake structure is asymmetrical.

### Claim 4

A propulsion system coupled to a vehicle, the system comprising:
a diffusing structure;
at least one conduit coupled to the diffusing structure and configured to introduce to the diffusing structure a primary fluid produced by the vehicle; and
an asymmetrical intake structure coupled to the diffusing structure and configured to introduce to the diffusing structure a secondary fluid accessible to the vehicle, wherein the diffusing structure comprises a terminal end configured to provide egress from the system for the introduced primary fluid and secondary fluid, and wherein the intake structure comprises first and second lateral opposing edges, and the first lateral opposing edge has a greater radius of curvature than the second lateral opposing edge.

### Claim 5 (depends on 4)

The system of claim 4, wherein the at least one conduit comprises an array of conduits arranged in at least one of a curved orientation, a spiraled orientation, and a zigzagged orientation.

### Claim 6 (depends on 4)

The system of claim 4, further comprising a convex surface, wherein the at least one conduit is configured to introduce to the convex surface the primary fluid produced by the vehicle.

### Claim 7

A propulsion system coupled to a vehicle, the system comprising:
a diffusing structure;
at least one conduit coupled to the diffusing structure and configured to introduce to the diffusing structure a primary fluid produced by the vehicle; and
an asymmetrical intake structure coupled to the diffusing structure and configured to introduce to the diffusing structure a secondary fluid accessible to the vehicle, wherein the diffusing structure comprises a terminal end configured to provide egress from the system for the introduced primary fluid and secondary fluid, and wherein the intake structure comprises first and second opposing edges, and the second opposing edge includes a curved portion projecting toward the first opposing edge.

### Claim 8 (depends on 7)

The system of claim 7, wherein the at least one conduit comprises an array of conduits arranged in at least one of a curved orientation, a spiraled orientation, and a zigzagged orientation.

### Claim 9 (depends on 7)

The system of claim 7, further comprising a convex surface, wherein the at least one conduit is configured to introduce to the convex surface the primary fluid produced by the vehicle.