US 11,787,547 B2
Icing detection using temperature data from an external data source
Haifeng Wang, Beijing (CN); and Jing Song, Beijing (CN)
Assigned to Honeywell International Inc., Charlotte, NC (US)
Filed by Honeywell International Inc., Charlotte, NC (US)
Filed on Feb. 22, 2021, as Appl. No. 17/181,964.
Prior Publication US 2022/0267014 A1, Aug. 25, 2022
Int. Cl. B64D 15/20 (2006.01); G01S 13/95 (2006.01); B64D 45/00 (2006.01)
CPC B64D 15/20 (2013.01) [G01S 13/953 (2013.01); B64D 2045/0085 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A system configured to mount on a vehicle, the system comprising:
a receiver configured to receive temperature data for a region of airspace from a data source external to the vehicle,
wherein the region of airspace includes a location; and
wherein the location is a point in space defined by a latitude, a longitude, and an altitude; and
processing circuitry configured to:
determine one or more moisture values for the region of airspace based on radar returns received by a weather radar onboard the vehicle;
determine a freezing altitude for the latitude and the longitude of the location based on the temperature data received from the data source;
determine a potential for icing at the location based on the one or more moisture values for the location, and further based on the temperature data received from the data source by:
determining that a difference between an altitude of the location and the freezing altitude for the location is less than a threshold altitude difference; and
determining that a moisture value associated with the location is greater than a threshold level; and
generate an output based on the determined potential for icing at the location.