摘要 |
A method ( 200 ) is disclosed for designing an RNP approach for an aircraft at a particular runway ( 90 ). The method includes selecting a runway ( 201 ), gathering obstacle data for the obstacle evaluation area ( 202 ), selecting a VEB method and terms ( 204 ), laying out a preliminary approach, inducing a missed approach segment ( 206 ), calculating a preliminary obstacle clearance surface ( 208 ), calculating a momentary descent segment using a physical model of the aircraft ( 210 ), adjusting the obstacle clearance surface so that no obstacles intersect the surface ( 212 ), and optionally optimizing the approach by departing from the operator's standard procedures ( 214 ). Preferably, the obstacle clearance surface is adjusted so that it just touches an obstacle, without any object intersecting the surface, thereby providing an optimal decision altitude.
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