Ejector and airfoil configurations

Patent metadata

Field	Value
Publication number	US-12565327-B2
Application number	US-202318218999-A
Country	US
Kind code	B2
Filing date	Jul 6, 2023
Priority date	Sep 2, 2015
Publication date	Mar 3, 2026
Grant date	Mar 3, 2026

Abstract

A propulsion system coupled to a vehicle. The system includes an ejector having an outlet structure out of which propulsive fluid flows at a predetermined adjustable velocity. A control surface having a leading edge is located directly downstream of the outlet structure such that propulsive fluid from the ejector flows over the control surface.

First claim

What is claimed is:

1 . A vehicle, comprising:
a main body; first and second primary airfoils coupled to the main body; a gas generator coupled to the main body and producing a gas stream, wherein the gas stream produced by the generator is the sole means of propulsion of the vehicle and enables the vehicle to travel at a first velocity; a conduit fluidly coupled to the generator; multiple ejectors fluidly coupled to the conduit and embedded in the first and second primary airfoils, each ejector comprising an input structure configured to discharge the gas stream adjacent to a convex surface within the ejector and an outlet structure out of which the gas stream flows from a respective trailing edge of the first and second primary airfoils at an adjustable second velocity, the second velocity being higher than the first velocity, wherein each of the respective trailing edges has first and second portions, the first portion of each trailing edge being oriented at a non-zero angle with respect to the second portion of the same trailing edge; and first and second secondary airfoils having respective leading edges and located directly downstream of the outlet structure such that the gas stream from the ejector flows over the leading edge of the secondary airfoil, wherein each of the respective leading edges has first and second portions, the first portion of each leading edge being oriented at a non-zero angle with respect to the second portion of the same leading edge.

2 . The vehicle of claim 1 , wherein the gas generator is disposed in the main body.

3 . The vehicle of claim 1 , wherein the primary airfoil comprises a trailing edge, and the at least one ejector emits the gas stream directly from the trailing edge of the primary airfoil.

4 . The vehicle of claim 1 , wherein the entirety of the secondary airfoil is rotatable about an axis oriented parallel to the leading edge.

5 . The vehicle of claim 1 , wherein each ejector is rotatable through a 180° angle.

6 . The vehicle of claim 1 , wherein the outlet structure is non-circular.

Assignees

• Jetoptera Inc

Inventors

• Evulet Andrei

Classifications

• B64D2033/0273

  for jet engines · CPC title

• B64D33/02

  of combustion air intakes · CPC title

• B64D29/02 Primary

  associated with wings · CPC title

• B64D27/18

  within, or attached to, wings · CPC title

• B64C39/024

  of the remote controlled vehicle type, i.e. RPV · CPC title