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Companion vs Afterbody - What's the difference?

companion | afterbody |

In nautical|lang=en terms the difference between companion and afterbody

is that companion is (nautical) the covering of a hatchway on an upper deck which leads to the companionway; the stairs themselves while afterbody is (nautical) the part of a vessel abaft midships.

In astronomy|lang=en terms the difference between companion and afterbody

is that companion is (astronomy) a celestial object that is associated with another while afterbody is (astronomy) a companion body that trails a satellite or spacecraft.

As nouns the difference between companion and afterbody

is that companion is a friend, acquaintance, or partner; someone with whom one spends time or keeps company while afterbody is the afterpart of a vehicle.

As a verb companion

is (obsolete) to be a companion to; to attend on; to accompany.

companion

English

Noun

(en noun)
  • A friend, acquaintance, or partner; someone with whom one spends time or keeps company
  • His dog has been his trusted companion for the last five years.
  • * Shakespeare
  • Here are your sons again; and I must lose / Two of the sweetest companions in the world.
  • (dated) A person employed to accompany or travel with another.
  • (nautical) The framework on the quarterdeck of a sailing ship through which daylight entered the cabins below.
  • (nautical) The covering of a hatchway on an upper deck which leads to the companionway; the stairs themselves.
  • (topology) A knot in whose neighborhood another, specified knot meets every meridian disk.
  • (figuratively) A thing or phenomenon that is closely associated with another thing, phenomenon, or person.
  • (astronomy) A celestial object that is associated with another.
  • A knight of the lowest rank in certain orders.
  • a companion of the Bath
  • (obsolete, derogatory) A fellow; a rogue.
  • * 1599 , , III. i. 111:
  • and let us knog our / prains together to be revenge on this same scald, scurvy, / cogging companion ,

    Synonyms

    * See also

    Derived terms

    * companionable, uncompanionable * companion hatch * companion ladder * companionship * companionway

    Verb

    (en verb)
  • (obsolete) To be a companion to; to attend on; to accompany.
  • (Ruskin)
  • (obsolete) To qualify as a companion; to make equal.
  • * (rfdate) (William Shakespeare)
  • Companion me with my mistress.

    afterbody

    English

    Alternative forms

    * after body

    Noun

    (afterbodies)
  • The afterpart of a vehicle.
  • * {{quote-book
  • , year=2005 , author=Erik M. Conway , title=High-speed dreams: NASA and the technopolitics of supersonic transportation, 1945-1999 , chapter=1 , isbn=080188067X , page=34 , passage=North American [Aviation] (NAA) added six General Electric X279 engines to the large, flat afterbody and turned the "wedge" into a pair of two-dimensional variable-geometry air inlets to feed the engines, and it fleshed out the vexing problem of what to build the plane out of using the experience it had gained working on the Navaho missile's structure.}}
  • (nautical) The part of a vessel abaft midships.
  • * {{quote-book
  • , year=1754 , author=Mungo Murray , title=A treatise on ship-building and navigation , chapter=6 , page=45 , passage=After the diagonals are drawn in the plane of the projection, the ribbands may be laid down in the horizontal plane, and from thence all the other frames may be laid down in the plane of projection, in the very same manner that the horizontal ribbands and the frames for the afterbody were laid down.}}
  • * {{quote-book
  • , year=1882 , author=John Wilson Danenhower , title=Lieutenant Danenhower's Narrative of the "Jeannette" , page=32 , passage=As well as could be judged by looking down through the water under the counters, there was no injury whatever to the afterbody of the ship.}}
  • * {{quote-book
  • , year=1977 , author=John Nicholas Newman , title=Marine Hydrodynamics , chapter=7 , isbn=0262140268 , page=343 , passage=The extension of slender-body theory to account for the interaction of the afterbody with vortex sheets shed upstream has been carried out by Newman and Wu (1973) in the general case where the local lateral velocity of the body differs from the downwash of the trailing vortices.}}
  • (astronomy) A companion body that trails a satellite or spacecraft.
  • (astronautics) A section or piece of a launch vehicle, rocket, or spacecraft that enters the atmosphere unprotected behind the nose cone or other body that is protected for entry.
  • * {{quote-book
  • , year=2000 , author=David M. Harland , title=Jupiter odyssey: the story of NASA's Galileo mission , chapter=6 , isbn=1852333014 , page=105 , passage=After two minutes of aerodynamic breaking — now some 400 kilometres below the entry interface, and with the probe having slowed to the speed of sound — a mortar was programmed to deploy the small drogue into the slipstream, and once the drogue had slowed the probe to 430 kilometres per hour the afterbody shield was to be released so that the 2.5-metre wide dacron main parachute could be deployed.}}
  • * {{quote-book, year=2004
  • , author=Michael Douglas Griffin and James R. French , title=Space vehicle design , chapter=6 , isbn=1563475391 , page=299 , passage=However, turbulent flow along the vehicle afterbody can under some conditions produce a comparable or greater heat flux.}}

    See also

    * forebody * middle body