Obstacle
61Obstacle Clearance Altitude — Unter Obstacle Clearance Altitude (OCA) versteht man in der Luftfahrt die Höhe über MSL, in der bei einem Instrumentenanflug noch Freiheit von Hindernissen besteht. Sie ist vor allem für den Flug unter Instrumentenflugbedingungen von Bedeutung.… …
62Obstacle épistémologique — Concept inventé par le philosophe Gaston Bachelard dans La formation de l esprit scientifique en 1938, l obstacle épistémologique désigne ce qui vient se placer entre le désir de connaître du scientifique et l objet qu il étudie. Cet obstacle l… …
63obstacle-free zone — The obstacle free zone is a three dimensional volume of airspace set up to protect aircraft transitioning to and from the runway. The OFZ clearing standard precludes taxiing and parked airplanes and object penetrations, except for frangible… …
64obstacle-limitation surfaces — The outer horizontal, conical, inner horizontal, approach, inner approach, transitional, inner transitional, balked landing, and takeoff climb surfaces make up the obstacle limitation surfaces. The outer horizontal surface is a plane located 500… …
65obstacle restricted areas — A command and control measure used to limit the type or number of obstacles within an area. See also obstacle …
66obstacle zone — A division level command and control measure, normally done graphically, to designate specific land areas where lower echelons are allowed to employ tactical obstacles. See also obstacle …
67obstacle-ridden — adjective dominated or plagued by obstacles. the obstacle ridden path to peace in the Middle East …
68obstacle course — track made up of various physical challenges to be overcome in an obstacle race …
69obstacle race — race done on an obstacle course, competition in which contestants try to overcome a series of physical challenges …
70obstacle-clearance box — A rectangle on an aeronautical chart that contains the number indicating the obstacle clearance required (in feet) on the approach segment where the box appears …
