# US 10,370,100 B2 · Aerodynamically actuated thrust vectoring devices

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- Number: US 10,370,100 B2
- Document ID: US10370100B2
- Status: Granted
- Kind: B2
- Application number: 15/077,268
- Filed: 2016-03-22
- Published: 2016-10-06
- Granted: 2019-08-06
- Earliest claimed: 2015-03-24
- Assignees: United States of America as represented by the Administrator of NASA
- Applicants: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
- Inventors: Paul M. Rothhaar; William J. Fredericks; David D. North
- Web page: https://patentgrep.com/patent/US10370100B2

## CPC

- B64C 29/0033: {the propellers being tiltable relative to the fuselage}
- B64C 9/04: with compound dependent movements
- Y02T 50/30: Wing lift efficiency
- Y02T 50/40: Weight reduction
- B64C: AEROPLANES; HELICOPTERS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A vehicle includes a wing and a control surface pivotably coupled to the wing and configured to pivot about a range of motion. A propulsor is coupled to the control surface and configured to rotate between a first position associated with a hover flight mode and a second position associated with a forward flight mode. The propulsor is aerodynamically actuated between the first position and the second position due to aerodynamics about the wing. The propulsor may rotate from an initial flight mode, such as a takeoff mode, to a second flight mode, such as a forward flight mode.

## Claims

### Claim 1

A vehicle comprising:
a wing;
a control surface pivotably coupled to the wing and configured to pivot about a range of motion; and
a propulsor coupled to the control surface and configured to rotate between a first position associated with a hover flight mode and a second position associated with a forward flight mode,
wherein the propulsor is aerodynamically actuated between the first position and the second position due to aerodynamics about the wing.

### Claim 2 (depends on 1)

The vehicle of claim 1, further comprising a connecting member connecting the propulsor to the control surface such that movement of the control surface about the range of motion produces rotation of the propulsor.

### Claim 3 (depends on 2)

The vehicle of claim 2, Wherein the connecting member is coupled to the control surface at a first end and coupled to the propulsor at a second end, and wherein the connecting member is coupled to the wing at a pivot point at a location of the connecting member between the first end and the second end.

### Claim 4 (depends on 3)

The vehicle of claim 3, wherein the pivot point is located aft of a center of gravity of the wing and forward of an aerodynamic center of the wing.

### Claim 5 (depends on 3)

The vehicle of claim 3, wherein the pivot point is positioned at a chord length location of the wing based on a weight of the propulsor and a weight the control surface and a length of the connecting member.

### Claim 6 (depends on 5)

The vehicle of claim 5, wherein a portion of the connecting member forward of the pivot point is configured to lie flush with an upper surface of the wing and wherein the wing comprises a notch sized to fit a portion of the connecting member aft of the pivot point.

### Claim 7 (depends on 2)

The vehicle of claim 2, wherein the control surface is a trailing edge flap.

### Claim 8

A vehicle comprising:
a vehicle body;
a tilting body configured to move through a range of motion relative to the vehicle body; and
a series of propulsors coupled to the vehicle body and configured to rotate between a first position associated with a hover flight mode and a second position associated with a forward flight mode,
wherein the series of propulsors are configured to aerodynamically actuate through the range of motion along with the tilting body due to aerodynamics about the tilting body to change between the first position and the second position.

### Claim 9 (depends on 8)

The vehicle of claim 8, further comprising:
a tail including a tail control surface configured to tilt through a range of motion relative to the tail and a series of tail propulsors coupled to the tail and configured to rotate between a first position associated with a hover flight mode and a second position associated with a forward flight mode,
wherein the series of tail propulsors are configured to aerodynamically actuate through the range of motion along with the tail due to aerodynamics about the tail to change between the first position and the second position.

### Claim 10 (depends on 8)

The vehicle of claim 8, wherein the series of propulsors are configured to be positioned in the first position prior to takeoff due to weights of the tilting body and the series of propulsors.

### Claim 11 (depends on 8)

The vehicle of claim 8, wherein the series of propulsors are configured to be positioned in the second position during forward flight due to lifting forces acting on the tilting body.

### Claim 12

A thrust vectoring device comprising:
a control surface configured to pivot about a range of motion; and
a propulsor coupled to the control surface and configured to rotate between a first position associated with a hover flight mode and a second position associated with a forward flight mode,
wherein the propulsor is aerodynamically actuated between the first position and the second position due to aerodynamic conditions about the control surface.