公开(公告)号：EP4554020A1

公开(公告)日：2025-05-14

申请号：EP24204935.1

申请日：2024-10-07

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： HALAMA, Gary E. ,  ACOTT, Phillip

IPC: H01S5/00 ,  H01S3/23

Abstract: In accordance with at least one aspect of this disclosure, a method for seeding an optical beam (106) includes, emitting an optical beam (106) from an energy source towards an optical amplifier along an optical axis, and rotating one or more optical elements disposed with in the beam path of the optical beam (106) between the energy source and the optical amplifier about the optical axis to a align the optical beam with a reference beam.

公开(公告)号：EP4497323A1

公开(公告)日：2025-01-29

申请号：EP24191294.8

申请日：2024-07-26

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： SLY, Jaime A. ,  BOELMAN, Joshua A. ,  ACOTT, Phillip

IPC: A01G15/00 ,  B64D43/00 ,  B64D45/00 ,  F02C9/00 ,  G01P5/26 ,  G01P13/02 ,  G01S7/48 ,  G01S7/497 ,  G01S17/42 ,  G01S17/58 ,  G01S17/933 ,  G01N15/0205 ,  G01S17/95

Abstract: Apparatus and associated methods relate to measuring metrics of a contrail produced by an aircraft engine. To measure such metrics, a beam of light is projected into a projection volume (26) that intersects an exhaust path of the aircraft engine. Light from a reception volume (28) that intersects the exhaust path (96) of the aircraft engine is received. An intersection volume (30) is formed by an intersection of the reception volume (28) and the projection volume (26). The light received includes a reflected portion of the projected beam backscattered by the atmosphere from within the intersection volume (30). The reflected portion of light received is used to determine whether a contrail is forming within the intersection volume (30). An alert is generated in response to determination that a contrail is forming within the intersection volume (30).

公开(公告)号：EP4498094A1

公开(公告)日：2025-01-29

申请号：EP24191256.7

申请日：2024-07-26

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： BOELMAN, Joshua ,  ACOTT, Phillip

IPC: G01P5/26 ,  G01S7/48 ,  G01S17/42 ,  G01S17/58 ,  G01S17/933 ,  B64D43/00 ,  G01P13/02 ,  G01S17/95

Abstract: Apparatus and associated methods relate to improving measurement of metrics determined by laser air-data systems subject to unwanted background light. Such measurements are improved by estimating and excising the unwanted background light from the total light received by an optical receiver (14) which receives a Doppler-shifted reflected portion of a projected beam of light backscattered by aerosols and air molecules of an atmosphere. The background light is estimated using a background-light rejection filter (16) that receives the light received by the optical receiver (14) after it has been filtered by a vapor cell filter (22) and separates the light received by the optical receiver (14) into a beam sampling portion and a complementary non-beam portion. The non-beam sampling portion is used to estimate the background light portion within the beam sampling portion, which also contains the Doppler-shifted reflected portion of the projected beam used for calculating the metrics of air data.

公开(公告)号：EP4455747A1

公开(公告)日：2024-10-30

申请号：EP24171269.4

申请日：2024-04-19

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： WESSER, Aaron ,  ACOTT, Phillip ,  MILLER, Mark Sherwood ,  SLY, Jaime ,  BOELMAN, Joshua A.

IPC: G02B6/42 ,  G01S7/481

Abstract: An optical apparatus (102) can be configured to cover an optical transceiver (104). At least a portion of the apparatus (102) can be configured to move relative to the transceiver (104) between a block state wherein the apparatus (102) is configured to block transmission from a transmitter (106) of the optical transceiver to a receiver (108) of the optical transceiver as well as block emission from the transmitter (106) to the atmosphere, and one or more transmit states wherein the apparatus (102) is configured to allow at least partial transmission from the transmitter (106) of the optical transceiver to a receiver (108) of the optical transceiver while blocking emission from the transmitter (106) to the atmosphere.

公开(公告)号：EP4497693A1

公开(公告)日：2025-01-29

申请号：EP24191300.3

申请日：2024-07-26

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： BOELMAN, Joshua A. ,  ACOTT, Phillip ,  SLY, Jaime A.

IPC: B64D43/02 ,  G01P5/26 ,  G01P13/02 ,  G01S7/48 ,  G01S17/42 ,  G01S17/58 ,  G01S17/933 ,  G01S17/95

Abstract: Apparatus and associated methods relate to improving measurement of metrics of air data of an atmosphere outside an aircraft. Such measurements are improved by estimating a daylight portion of light received by an optical receiver (14) configured to receive a reflected portion of the projected beam backscattered by the atmosphere. Estimation of the daylight portion is performed using a daylight filter. The daylight filter receives the light received by the optical receiver (14) after it has been filtered by a vapor cell filter (22) and separates the light, as filtered, into a beam sampling portion and a complementary non-sampling portion. The non-beam sampling portion includes wavelengths immediately adjacent to the beam sampling portion. The non-beam sampling portion is used to estimate the daylight portion within the beam sampling portion, which also contains the reflected portion of the projected beam used for calculating the metrics of air data.

公开(公告)号：EP4497692A1

公开(公告)日：2025-01-29

申请号：EP24191505.7

申请日：2024-07-29

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： MILLER, Mark S. ,  ACOTT, Phillip

IPC: B64D43/00 ,  G01P5/26 ,  G01P13/02 ,  G01S7/48 ,  G01S17/42 ,  G01S17/58 ,  G01S17/933 ,  G01S17/95

Abstract: Apparatus and associated methods relate to improving measurement of metrics determined by laser air-data systems subject to unwanted background light. Such measurements are improved by estimating and excising the unwanted background light from the total light received by an optical receiver (14) which receives a Doppler-shifted reflected portion of a projected beam of light backscattered by aerosols and air molecules of an atmosphere. The background light is estimated using a background-light rejection filter (16) that separates the light received by the optical receiver (14) into a beam sampling portion and a complementary non-beam portion. The beam sampling portion has band-pass wavelengths that include the Doppler-shifted reflected portion and a portion of the unwanted background light. The complementary non-beam portion includes background light of wavelengths outside of the band-pass wavelengths of the beam sampling portion. The non-beam sampling portion is used to estimate the unwanted background light included in the beam sampling portion.