During our interaction with ISEE-3 today we tried a variety of valve and thruster selections using both sides of the propulsion system combined with tank and fuel line heating. Although we met with limited success we did get several instances of thrust (the main intent) and also a change in the Fine Sun Sensor angle of the spacecraft. So, something changed the trajectory of ISEE-3 albeit slightly. Also, the temperatures in the fuel tanks only rose a little bit which is what you’d expect of they were still full of fuel. This is good news since we were concerned for a while that there might have been a loss of fuel and/or pressurant. So … we’re analyzing the data and trying to sleuth out how we got the momentary thrust and then apply that to our next interaction with the spacecraft. We have applied for an extension to our license from NASA to transmit to the spacecraft and are awaiting their reply.
