afterbody

plural afterbodies · alternative after body

1. The afterpart of a vehicle.

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   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.

   2005, Erik M. Conway, chapter 1, in High-speed dreams: NASA and the technopolitics of supersonic transportation, 1945-1999, →ISBN, page 34

2. nauticalThe part of a vessel abaft midships.

   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.

   1882, John Wilson Danenhower, Lieutenant Danenhower's Narrative of the "Jeannette", page 32

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   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.

   1754, Mungo Murray, chapter 6, in A treatise on ship-building and navigation, page 45

   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.

   1977, John Nicholas Newman, chapter 7, in Marine Hydrodynamics, →ISBN, page 343

3. astronomyA companion body that trails a satellite or spacecraft.
4. space flightA 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.

   However, turbulent flow along the vehicle afterbody can under some conditions produce a comparable or greater heat flux.

   2004, Michael Douglas Griffin, James R. French, chapter 6, in Space vehicle design, →ISBN, page 299

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   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.

   2000, David M. Harland, chapter 6, in Jupiter odyssey: the story of NASA's Galileo mission, →ISBN, page 105