feep - meaning and definition. What is feep
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What (who) is feep - definition

A TYPE OF ELECTRIC PROPULSION SYSTEM.
FEEP; Field emission electric propulsion; Feep; Field Emission Electric Propulsion

feep         
/feep/ 1. The soft electronic "bell" sound of a display terminal (except for a VT-52); a beep (in fact, the microcomputer world seems to prefer beep). 2. To cause the display to make a feep sound. ASR-33s (the original TTYs) do not feep; they have mechanical bells that ring. Alternate forms: beep, "bleep", or just about anything suitably onomatopoeic. (Jeff MacNelly, in his comic strip "Shoe", uses the word "eep" for sounds made by computer terminals and video games; this is perhaps the closest written approximation yet.) The term "breedle" was sometimes heard at SAIL, where the terminal bleepers are not particularly soft (they sound more like the musical equivalent of a raspberry or Bronx cheer; for a close approximation, imagine the sound of a Star Trek communicator's beep lasting for five seconds). The "feeper" on a VT-52 has been compared to the sound of a '52 Chevy stripping its gears. See also ding. [Jargon File]
Field-emission electric propulsion         
Field-emission electric propulsion (FEEP) is an advanced electrostatic space propulsion concept, a form of ion thruster, that uses a liquid metal as a propellant – usually either caesium, indium, or mercury.
featuritis         
EXCESSIVE ONGOING EXPANSION OR ADDITION OF NEW PRECLUDED FEATURES IN A PRODUCT, ESPECIALLY IN COMPUTER SOFTWARE, VIDEO GAMES AND CONSUMER AND BUSINESS ELECTRONICS
Feeping creaturism; Creeping featuritis; Feature Creep; Creeping featureism; Feature creep.; Creature feep; Creeping featurism; Complexity trap; Featuritis; Technical creep; Feeping creaturitis; Creeping feature
A disease carried by management and sales. Caught by projects (exp. software) when m/s decide to add unnecessary features to give a product unique selling points.
That new gizmo has developed acute featuritis.

Wikipedia

Field-emission electric propulsion

Field-emission electric propulsion (FEEP) is an advanced electrostatic space propulsion concept, a form of ion thruster, that uses a liquid metal as a propellant – usually either caesium, indium, or mercury.

A FEEP device consists of an emitter and an accelerator electrode. A potential difference of the order of 10 kV is applied between the two, which generates a strong electric field at the tip of the metal surface. The interplay of electric force and the liquid metal’s surface tension generates surface instabilities, which give rise to Taylor cones on the liquid surface. At sufficiently high values of the applied field, ions are extracted from the cone tip by field evaporation or similar mechanisms, which then are electrically accelerated to high velocities – typically 100 km/s or more. Although the ion exhaust velocity is high, their mass is very low, resulting in very weak acceleration forces. Their benefit comes from sustained acceleration forces over long time periods.

Due to its very low thrust (in the micronewton (μN) to millinewton (mN) range), FEEP thrusters are primarily used for microradian, micronewton attitude control on spacecraft, such as in the ESA/NASA LISA Pathfinder scientific spacecraft. The FEEP thruster was also slated for installation on Gravity Field and Steady-State Ocean Circulation Explorer spacecraft, but the Gridded ion thruster was used instead. The first FEEP thruster operated in space was the IFM Nano Thruster, successfully commissioned in Low Earth Orbit in 2018.