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：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.