Figure 9From: Force probes for development and testing of different electric propulsion systems(a) View into the test chamber at the force probe (left) with the carbon fiber velvet measurement target (diameter 40 mm) and the FEEP thruster (right). Unlike the measurement configuration, the thruster was rotated by 90 degrees for better visibility. (b) Example measurement of the displacement. The thruster is firing for 10 s starting at \(t \approx 10~\text{s}\)Back to article page