Ulysses Upper Equipment Bay

Thermistors

You clicked on a thermistor.

 

Thermistors measure the temperature of components on board the spacecraft. The thermistor temperatures are received in telemetry and used by the Flight Control Team to make decisions about spacecraft maintenance. Fuel lines must be kept from freezing, experiments must be in their correct operating range, and sensitive components must be kept from overheating.

The thermistors have been placed such that temperature information can be derived for the maximum number of critical locations; and to preferentially cover those areas with very strict thermal requirements. With a limited number of thermistors available, many of them have been placed between units so that the temperatures of both can be derived.

 

The upper platform thermistors measure the following unit temperatures:

U007 PLTF +X-Y/PCU Platform +X-Y area, in the vicinity of the Power Control Unit.

U015 PIPE+X W/RCE +X Wing, on the pipe section between the +X wing standoffs.

U018 PIPE-X W/RCE -X Wing, on the pipe section between the -X wing standoffs.

U013 PLTF -X-Y/TR Platform -X-Y area, between IPDs 3&4. 'TR' stands for 'tape recorder', as the DSUs are situated directly below this thermistor in the lower equipment bay.

U004 PLTF -X+Y/PTR Platform -X+Y area, in the vicinity of the Pressure Transducer

S175 CTU 1 TEMP Inside the CTU bonded to a CTU1 curcuit board.

S176 CTU 2 TEMP Inside the CTU bonded to a CTU2 curcuit board.

R001 TAN TEMP UP Surface of the upper (pressurant) tank hemisphere.

U005 PLTF +X/W SIM +X wing between SIM 1 & 2

H062 LTEMPSCSIM-1 SIM Low Energy Telescope, front flange.

H140 HTEMPSCSIM-2 SIM High Energy Telescope temperature.

B003 2ASENSTMPX Solar Wind Ion Composition Spectrometer, deflection plate power supply temperature.