公开(公告)号：US11685534B2

公开(公告)日：2023-06-27

申请号：US16989475

申请日：2020-08-10

Applicant: Lockheed Martin Corporation

Inventor： William Betush ,  Russell Guy Torti

IPC: B64D15/00 ,  B64D15/20 ,  B64C3/38 ,  B64D43/02

CPC classification number: B64D15/20 ,  B64C3/38 ,  B64D43/02

Abstract: A system includes a plurality of sensors along a surface of an airfoil operable to measure a first set of ice thickness values at a first time and a second set of ice thickness values at a second time. The system further includes a processor configured to determine a first plurality of lift calculation variables and a second plurality of lift calculation variables. The processor also generates a threshold angle of attack value and updates the threshold angle of attack value at the second time, based on one or more differences between the first and second sets of ice thickness values and the first and second plurality of lift calculation variables. The processor is further configured to send, to a display, based on the updated threshold angle of attack, one or more changes to flight data to adjust the actual angle of attack of the airfoil.

公开(公告)号：US20200340928A1

公开(公告)日：2020-10-29

申请号：US16397336

申请日：2019-04-29

Applicant: Lockheed Martin Corporation

Inventor： Russell Guy Torti ,  William Betush ,  James R. Reed

IPC: G01N21/88 ,  G01N21/64 ,  B64F5/60

Abstract: A system includes an ultraviolet light source, a light-receiving apparatus, and a performance detector. The ultraviolet light source is configured to expose a surface to ultraviolet light. The surface includes a surface coating and a fluorescence layer beneath the surface coating. The light-receiving apparatus is configured to measure a fluorescence response to the ultraviolet light of the surface by detecting light in a predetermined frequency range within the visible light spectrum light. The performance detector is communicatively coupled to the light-receiving apparatus. The performance detector is configured to determine a proportion of the surface comprising the surface coating disposed over the fluorescence layer based on the measured fluorescence response. The performance detector is further configured to compare the determined proportion to a predetermined threshold.