The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 09, 2002
Filed:
Dec. 10, 1999
Dana A. Kromer, Minnetonka, MN (US);
John A. Severson, Eagan, MN (US);
Rosemount Aerospace Inc., Burnsville, MN (US);
Abstract
A smart probe system for an aircraft receives an input from a heated total air temperature sensor. When on the ground, the heater for the total air temperature probe is cycled so that when a preselected temperature is indicated by the temperature sensing element in the total air temperature probe, the heater power is turned off, and as the total air temperature probe cools, changes. Changes in indicated temperature from the temperature sensing element are measured and the changes analyzed and used for determining outside air temperature. The outside air temperature can be calculated by determining the rate of change in the temperature while the probe cools. A complimentary method is to determine when the indicated temperature stabilizes, after the heater is turned off, and deriving outside air temperature from the stabilized temperature signal from the sensing element.