公开(公告)号：US11933814B2

公开(公告)日：2024-03-19

申请号：US17562501

申请日：2021-12-27

Applicant: Textron Innovations Inc.

Inventor： Kip Gregory Campbell

IPC: G01P5/02 ,  G01C23/00 ,  G05D1/00 ,  G05D1/08

CPC classification number: G01P5/02 ,  G01C23/00 ,  G05D1/0808

Abstract: According to one implementation of the present disclosure, a method for determining airspeed for an unpowered vehicle is disclosed. The method includes: determining first and second body-fixed load factor measurements; determining a body Z-force coefficient based on an angle-of-attack parameter; and determining an airspeed value based on the second body-fixed load factor measurement and the body Z-force coefficient.

公开(公告)号：US20240034465A1

公开(公告)日：2024-02-01

申请号：US17873983

申请日：2022-07-26

Applicant: TEXTRON INNOVATIONS INC.

Inventor： Steven R. Ivans ,  Danielle Lynn Moore ,  William Anthony Amante ,  Kip Gregory Campbell ,  Mathew Chapdelaine ,  Brian John Cox ,  Carey Andrew Cross ,  Steve Michael Loveland ,  Bradley Paul Regnier ,  Robert W. Roe ,  Steve R. Schafer

IPC: B64C27/82 ,  B64C27/20

CPC classification number: B64C27/82 ,  B64C27/20 ,  B64C2027/829 ,  B64C2027/8272

Abstract: One embodiment is an apparatus for inhibiting accidental contact by a human with a tail rotor connected to an empennage of an aircraft. The apparatus includes an inverted V-tail connected to an empennage of the aircraft forward of the tail rotor, the inverted V-tail stabilizer comprising a first V-tail stabilizer on a side of the empennage to which the tail rotor is connected and a second V-tail stabilizer on a side of the empennage opposite the side of the empennage to which the tail rotor is connected; and a shroud bar having a first end connected to an outboard end of the first V-tail stabilizer and a second end opposite the first end connected to the empennage aft of the tail rotor, wherein a horizontal distance from the shroud bar to the tail rotor is greater than a length of an arm of the human.

公开(公告)号：US20220258863A1

公开(公告)日：2022-08-18

申请号：US17545158

申请日：2021-12-08

Applicant: Textron Innovations Inc.

Inventor： Kip Gregory Campbell

IPC: B64D1/02 ,  B64C29/00

Abstract: A tiltrotor aircraft has a vertical takeoff and landing flight mode and a forward flight mode. The aircraft includes an airframe having at least one wing. First and second oppositely disposed booms extend longitudinally from the at least one wing. Forward rotors are coupled to the forward ends of the booms and aft rotors are coupled to the aft ends of the booms. The forward rotors are reversibly tiltable between a vertical lift orientation, wherein the forward rotors are above the booms, and a forward thrust orientation, wherein the forward rotors are forward of the booms. The aft rotors are reversibly tiltable between a vertical lift orientation, wherein the aft rotors are below the booms, and a forward thrust orientation, wherein the aft rotors are aft of the booms.

公开(公告)号：US20210341947A1

公开(公告)日：2021-11-04

申请号：US17373682

申请日：2021-07-12

Applicant: Textron Innovations Inc.

Inventor： Kip Gregory Campbell

IPC: G05D1/06 ,  B64D45/00 ,  G08G5/00

Abstract: According to one implementation of the present disclosure, a method for determining angle-of-attack for an unpowered vehicle is disclosed. The method includes: determining a monotonic portion of a look-up curve of an angle-of-attack operating plot; during flight, determining, by an accelerometer disposed on the unpowered vehicle, first and second accelerometer outputs, where the first and second accelerometer outputs correspond to first and second body-fixed load factor measurements, respectively; determining an operating point on the monotonic portion by applying a quotient of the first and second accelerometer outputs to the angle-of-attack operating plot; and determining an angle-of-attack parameter corresponding to the determined operating point.