Hall Thrusters

[Photon Guy]

When are we going to start using hall thrusters?

 

[TheVat]

1971.  

From an easily searched online source, which took me about 30 seconds to find:

Hall thrusters have been flying in space since December 1971, when the Soviet Union launched an SPT-50 on a Meteor satellite. Over 240 thrusters have flown in space since that time, with a 100% success rate. Hall thrusters are now routinely flown on commercial LEO and GEO communications satellites, where they are used for orbital insertion and stationkeeping...

 

🙄

[swansont]

1971. ~240 have flown in space
 

https://en.m.wikipedia.org/wiki/Hall-effect_thruster

(xpost with TheVat)

[TheVat]

Jinx!