초록 ▼

The marker has a pair of upwardly converging reflectant planar panels facing approximately in opposite directions. In its correct attitude on a support surface the panels slope at 2°-6°to the vertical if the marker is intended for assisting the landing of fixed wing aircraft and at 8°-10°to the vert

The marker has a pair of upwardly converging reflectant planar panels facing approximately in opposite directions. In its correct attitude on a support surface the panels slope at 2°-6°to the vertical if the marker is intended for assisting the landing of fixed wing aircraft and at 8°-10°to the vertical if the marker is intended for assisting the landing of helicopters (Collectively at 2°-10°to the vertical). The reflectant panels are preferably retroreflectant. Preferably the opposed sloping panels converge when considered relative to intersecting horizontal planes (when the marker is properly levelled). This convergence may also be measured as the angle between vertical planes respectively perpendicular to the opposed panels. Such convergence in plan may preferably be 0°-6°for use with fixed wing aircraft but may be larger for fixed wing aircraft in certain conditions. Such convergence in plan is preferably 16°-20°in markers used with helicopters. Collectively for fixed wing aircraft and helicopters the convergence in plan may therefore be considered as 0°-20°.

대표청구항 ▼

A marker designed to be mounted on a support surface, means for mounting said marker on said support surface in a predetermined attitude said marker, when so mounted, comprising a pair of panels facing approximately away from each other in azimuthal directions, said panels sloping upwardly toward ea

A marker designed to be mounted on a support surface, means for mounting said marker on said support surface in a predetermined attitude said marker, when so mounted, comprising a pair of panels facing approximately away from each other in azimuthal directions, said panels sloping upwardly toward each other at an angle of between 2°and 10°to the vertical, and having retroreflectant material covering a substantial area of said panels, wherein said marker is shaped so that, when mounted in said attitude, vertical planes through said panels, and perpendicular thereto, intersect at more than 0°and less than 20°to each other.