Outer Cover: The external covering of the hull of a rigid airship.
Outer Marker-beacon: A radio beacon comprising part of a blind approach installation which defines a predetermined distance from the aerodrome boundary.
An outer covering used on wings and fuselages, designed to carry the tension and compression forces encountered in flight.
Stringer
Light, lengthwise fuselage strips intended more to give the desired shape than to add strength.
A flexible tube guides the air into the metal outer cover or shroud around the aircraft muffler.
like bulk-heading on a steamship, so that if one or more cells fail the ship will still remain aloft: (b) The triple cover system, one cover to hold the lifting gas, one consisting of the shape-forming duralumin frame-work, and an outer cover to shed ...
 See also: Direct, Force, Flight, Power, Aircraft
  
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