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System and method for detecting bad runway conditions

  • US 9,981,754 B2
  • Filed: 11/13/2015
  • Issued: 05/29/2018
  • Est. Priority Date: 11/13/2015
  • Status: Active Grant
First Claim
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1. A method for detecting a runway condition comprising:

  • detecting that an aircraft is on a runway with a weight on wheel system;

    transitioning to an on ground condition, wherein the on ground condition permits braking of the aircraft; and

    determining that the runway is contaminated due to the transitioning being due to expiration of a weight on wheel time limit; and

    delaying application of a braking force to at least one of a first landing gear or a second landing gear due to a calculated first axle reference speed being less than an on ground threshold speed until expiration of the weight on wheel time limit, wherein calculating the first axle reference speed comprises averaging a wheel reference speed of a plurality of wheels on the first landing gear.

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