Field propulsion

Field propulsion

Field propulsion is the concept of spacecraft propulsion where no propellant is necessary but instead momentum of the spacecraft is changed by an interaction of the spacecraft with external force fields. The concepts for such means of propulsion range from schemes using the presently accepted physics paradigm to other more speculative means using "frontier physics" that may or may not be discovered in the future. Schemes for field propulsion that operate within presently within the present physics paradigm , such as the commonly used gravity assist trajectory, which uses planetary gravity fields and orbital momentum, schemes that use electromagnetic fields such as radiation pressure such as solar sails or photonic drive, and even aerodynamic fields such as solar wind and aerobraking. Concepts for field propulsion that rely on physics outside the present paradigms are various schemes for Warp drive and antigravity. All such schemes worthy of discussion rely on momentum transfer from the spacecraft to the external force field and from there to other masses in the cosmos in order to satisfy conservation of momentum.


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • Field Emission Electric Propulsion — (FEEP) is an advanced electrostatic propulsion concept, a form of ion thruster, that uses liquid metal (usually either caesium or indium) as a propellant. A FEEP device consists of an emitter and an accelerator electrode. A potential difference… …   Wikipedia

  • Propulsion MHD — Accélérateur MHD Un accélérateur MHD (magnétohydrodynamique) est un convertisseur MHD qui met en mouvement un fluide conducteur, grâce à un champ électrique et un champ magnétique combinés. Le principe de base est le même que celui d un moteur… …   Wikipédia en Français

  • Propulsion magnétohydrodynamique — Accélérateur MHD Un accélérateur MHD (magnétohydrodynamique) est un convertisseur MHD qui met en mouvement un fluide conducteur, grâce à un champ électrique et un champ magnétique combinés. Le principe de base est le même que celui d un moteur… …   Wikipédia en Français

  • Propulsion laser — La propulsion par laser est une discipline relativement jeune remontant aux années 1970 comparée aux propulsions liquides et solides. D’où la nécessité de faire un tour d’horizon des domaines déjà couverts par les chercheurs et de ceux encore à… …   Wikipédia en Français

  • Field emission display — A field emission display (FED) is a display technology that incorporates flat panel display technology that uses large area field electron emission sources to provide electrons that strike colored phosphor to produce a color image as a electronic …   Wikipedia

  • Spacecraft propulsion — A remote camera captures a close up view of a Space Shuttle Main Engine during a test firing at the John C. Stennis Space Center in Hancock County, Mississippi Spacecraft propulsion is any method used to accelerate spacecraft and artificial… …   Wikipedia

  • Advanced Space Propulsion Investigation Committee — (ASPIC) was a research group of specialists, including Y.Minami,cite journal|last=Minami|first=Yoshinari|date=2003|title= An Introduction to Concepts of Field Propulsion|journal=Journal of the British Interplanetary Society|volume=56|pages=350… …   Wikipedia

  • United States gravity control propulsion research (1955 - 1974) — American interest in gravity control propulsion research intensified during the early 1950s. Literature from that period used the terms anti gravity, anti gravitation, baricentric, counterbary, electrogravitics, G projects, gravitics, gravity… …   Wikipedia

  • Breakthrough Propulsion Physics Program — The Breakthrough Propulsion Physics Project (BPP) was a research project funded by NASA from 1996 through 2002, to study various proposals for revolutionary methods of spacecraft propulsion which would require breakthroughs in physics before they …   Wikipedia

  • Electric propulsion — is a form of spacecraft propulsion used in outer space. This type of rocket like reaction engine utilize electric energy to obtain thrust from propellant carried with the vehicle. Unlike rocket engines these kinds of engines do not necessarily… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”