High Specific Impulse Missions

Status of Ion Engine Development for High Power, High Specific Impulse Missions

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. for flight decreased to about 4000 seconds, as demonstrated in space on Space Electric Rocket
Tests (SERT) I . of both is critical to the design of high-voltage optics for high power ion thrusters. .
An assumed value of 2500 V/mm for the maximum electric field strength resulted in a