Accession Number : ADD001785

Title :   Stabilized Horizon Plane System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Stevenson,Duncan G

Report Date : 22 Apr 1975

Pagination or Media Count : 4

Abstract : The patent relates to a landing aid whereby a ship has a helicopter landing area and a horizontal plane indicating member with a substantially flat upper surface mounted for angular movement about axes parallel and transverse to the length of the ship. The indicator member is mounted in such a position on the ship and the flat upper surface is of such a size as to be clearly visible to the pilot of a helicopter when landing on the area. Means are provided for maintaining the indicating member in a horizontal attitude.

Descriptors :   *Ships, *Helicopters, *Landing aids, *Patents, Level flight, Aircraft landings, Stabilized platforms, Horizontal indicators

Subject Categories : Helicopters
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE