found: Work cat.: Norgren, C.T. Colloid thrustor beam analysis, 1965:p. 1 (A quadrupole mass filter and a monopole spectrometer were designed and calibrated to be used in the analysis of the beam produced by a colloid thrustor)
found: Encyclopedia of physical science and technology, 2002:v. 5, p. 134 (Another simple electrostatic thruster concept that has the advantages over FEEP [field emission electric propulsion] of higher thrust-to-power ratios and the use of more benign propellants is the colloid thruster. It employs similar physical processes, except that nonmetallic liquids are used and sub-micron-sized charged particles (colloids) are produced and accelerated)
found: Wikipedia, via WWW, July 28, 2006(A colloid thruster is an engine that uses electrostatic acceleration of charged liquid droplets (instead of hot gas) for propulsion. Its benefits include high efficiency, thrust density, and specific impulse; however it has very low total thrust ... Its primary utility is in very efficient fine control or efficient primary acceleration of small spacecraft over long periods of time)
found: Encyclopedia of astrobiology, astronomy, and spaceflight, via WWW, Aug. 4, 2006(Electrostatic propulsion -- A form of electric propulsion in which the thrust is produced by accelerating charged particles in an electrostatic field. It includes three types of devices: electron bombardment thrusters, contact ion thrusters, and field emission/colloid thrusters ... The third type involves the production and acceleration of charged liquid droplets)
