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Flight navigation holding pattern entry algorithms

  • US 20040230351A1
  • Filed: 05/15/2003
  • Published: 11/18/2004
  • Est. Priority Date: 05/15/2003
  • Status: Active Grant
First Claim
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1. A hold entry algorithm for a teardrop holding pattern entry, the hold entry algorithm comprising:

  • a) a teardrop turn 1 segment;

    b) a teardrop outbound segment following the teardrop turn 1 segment, the teardrop outbound segment having a length equal to the smaller of a hold racetrack outbound distance and a default leg distance, and wherein if the outbound segment length is less than a defined minimum distance the outbound segment length is extended to the greater of the hold racetrack outbound distance or the default leg length distance;

    c) a teardrop turn 2 segment following the teardrop outbound segment; and

    d) a teardrop inbound segment following the teardrop turn 2 segment.

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