公开(公告)号：US11643194B2

公开(公告)日：2023-05-09

申请号：US16717314

申请日：2019-12-17

Applicant: THE BOEING COMPANY

Inventor： Keyvan Sayyah ,  Pamela R. Patterson ,  Raymond Sarkissian ,  Oleg M. Efimov ,  Biqin Huang ,  David L. Hammon

IPC: B64C27/00 ,  G01S17/89 ,  G05D1/08 ,  G01S7/481 ,  G01S17/66 ,  G01S17/88 ,  G01S17/06

CPC classification number: B64C27/008 ,  G01S7/4817 ,  G01S17/06 ,  G01S17/66 ,  G01S17/88 ,  G01S17/89 ,  G05D1/0816

Abstract: A blade positioning system and method are provided to dynamically measure blade position during flight of a rotorcraft. In the context of a method, a blade of the rotorcraft is repeatedly illuminated by a light source during flight of the rotorcraft while the blade is rotating. The method also includes detecting radiation scattered from the blade in response to illumination of the blade. The method further includes determining at least one of a blade pitch angle, a blade flap angle, a blade leading position or a blade lagging position based upon the radiation that is scattered from the blade and detected. A rotorcraft is also provided that includes a chip-scale light detection and ranging (LIDAR) sensor configured to illuminate the plurality of blades while the blades are rotating in order to permit blade position to be measured or to illuminate terrain beneath the rotorcraft in order to provide an altitude measurement.

公开(公告)号：US20220107545A1

公开(公告)日：2022-04-07

申请号：US17450031

申请日：2021-10-05

Applicant: The Boeing Company

Inventor： Daniel Yap ,  Shuoqin Wang ,  Ivan Alvarado ,  Biqin Huang ,  Thaddeus Ladd

IPC: G02F1/365 ,  G02F1/35 ,  G02F1/39

Abstract: A method, apparatus, and system for non-linear optical process. A first light of a first wavelength is routed in a first loop in a main nonlinear optical waveguide. The first loop has a first length for the first light of the first wavelength. A second light of a second wavelength is routed in a second loop that includes portions of the main nonlinear optical waveguide and a first extension optical waveguide. The second loop has a second length for the second light of the second wavelength. A third light of a third wavelength is routed in a third loop that include portions of the main nonlinear optical waveguide and a second extension optical waveguide. The third loop has a third length for the third light of the third wavelength.

公开(公告)号：US11614672B2

公开(公告)日：2023-03-28

申请号：US17450031

申请日：2021-10-05

Applicant: The Boeing Company

Inventor： Daniel Yap ,  Shuoqin Wang ,  Ivan Alvarado ,  Biqin Huang ,  Thaddeus Ladd

IPC: G02F1/365 ,  G02F1/35 ,  G02F1/39 ,  G02F1/377 ,  G02F1/37

Abstract: A method, apparatus, and system for non-linear optical process. A first light of a first wavelength is routed in a first loop in a main nonlinear optical waveguide. The first loop has a first length for the first light of the first wavelength. A second light of a second wavelength is routed in a second loop that includes portions of the main nonlinear optical waveguide and a first extension optical waveguide. The second loop has a second length for the second light of the second wavelength. A third light of a third wavelength is routed in a third loop that include portions of the main nonlinear optical waveguide and a second extension optical waveguide. The third loop has a third length for the third light of the third wavelength.