公开(公告)号：EP3730947A1

公开(公告)日：2020-10-28

申请号：EP19214956.5

申请日：2019-12-10

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： SLY, Jamie ,  SHANNON, Daniel W. ,  MATHEIS, Brian Daniel ,  ELL, Todd A. ,  KUNIK, William ,  KOUSHIK, Surdarshan N.

IPC: G01P5/24 ,  G01P13/02 ,  B64D43/02

Abstract: An ultrasonic air data system (100) can include a pole (103) having a length (103) longer than a boundary layer thickness (105) of a boundary layer flow (107) such that at least a distal end of the pole is configured to extend outwardly from an aircraft surface to be at least partially outside of the boundary layer flow. The system can include a transmitter (111) disposed on or in the pole at or near the distal end of the pole such that the transmitter is located at least partially outside of the boundary layer flow when in use, wherein the transmitter is configured to output a transmitter signal. The system can include one or more receivers (115) disposed downstream of the pole as defined by the boundary layer flow and configured to receive the transmitter signal.

公开(公告)号：EP3712620A1

公开(公告)日：2020-09-23

申请号：EP19213156.3

申请日：2019-12-03

Applicant: ROSEMOUNT AEROSPACE INC.

Inventor： MATHEIS, Brian Daniel ,  SHANNON, Daniel W. ,  KOUSHIK, Surdarshan N.

IPC: G01P5/24 ,  G01P5/04 ,  G01P5/10 ,  G01P13/02 ,  G01P13/00 ,  G01H5/00

Abstract: An acoustic air data sensing system includes an acoustic transmitter, a plurality of acoustic receivers, and a skin friction sensor. The acoustic transmitter is located to transmit an acoustic signal into airflow about an exterior of a vehicle. Each of the acoustic receivers is located at a respective angle from a wind angle reference line and a respective distance from the acoustic transmitter. The skin fiction sensor is positioned in a boundary layer region of the airflow that interacts with the acoustic receivers and transmitter. Based on time of flight values of the acoustic signal from the transmitter to each of the receivers and a skin friction measurement from the skin friction sensor as inputs to a transformation matrix, the acoustic air data sensing system outputs, from the transformation matrix, the true airspeed, the relative wind angle, and the speed of sound for operational control of the vehicle.