Encyclopedia Astronautica
ATS 8 cm


EOS electric/cesium rocket engine. 4.5 mN. Flown in 1974. Isp=6700s.Thruster for the ATS-6 test; consisted of two electron bombardment engines using cesium propellant. The thruster anode diameter was 8 cm, and a cesiated tungsten neutralizer was used.

Beam power supply voltage was 5600 V, and the power per thruster was 0.15 kW, producing 4.5 mN thrust at a specific impulse of 2500 seconds. About 3.6 kg of propellant was carried. The longest ground test prior to launch was 2614 hours, and on ATS-6 the thruster operated for 92 hours before further testing was terminatd due to feed system flooding problems.

Electrical Input Power: 0.15 kW.

Status: Flown in 1974.
Thrust: 0.0045 N (0.0010 lbf).
Specific impulse: 6,700 s.
First Launch: 1974.

More... - Chronology...


Associated Countries
See also
Associated Manufacturers and Agencies
  • EOS Electro-Optical Systems, Queanbeyan, NSW, Australia. More...

Associated Propellants
  • Electric/Cesium The many versions of electric engines use electric or magnetic fields to accelerate ionized elements to high velocity, creating thrust. The power source can be a nuclear reactor or thermal-electric generator, or solar panels. More...

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