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One way to increase thermal software performance has been developed at AEROSPATIALE Cannes by means of a condensation algorithm for conductive models (EQUIVALE). The benefit of this improvement is exportable to other software packages by developing specific interfaces. Therefore, two gateways are now available to perform ESATAN conductive models condensation: the first (ESAEQU) translates the initial ESATAN input deck into the different files required by EQUIVALE; the second (EQUESA) generates a new ESATAN input deck including the equivalent conductances provided by EQUIVALE. Three examples of application are described hereafter: the first (RADIATOR PANEL) illustrates the condensation processing coupled to ESATAN, the second (TV-SAT/TDF), more realistic, refers to a flight model in the frame of the AEROSPATIALE Thermal Software environment and the third (TÜRKSAT) shows the optimum use of EQUIVALE with the combination of both PLATEAU and EQUIVALE software packages.

FLUIDNET-G is a “workstation” based graphic's orientated software package, developed by AEROSPATIALE under a C.N.E.S. contract on joint funding. The package performs single phase fluid loops thermal and hydraulic preliminary design. The main characteristics of this tool are: the user friendliness of the graphic's and the workstation concept. the “upstream compatibility” towards others analysis tools (FLUINT, ESATAN, …) This paper illustrates an application for which FLUIDNET-G has increased engineer performance to perform trade-offs and sensitivity studies in the frame of the preliminary thermal and hydraulic design of HERMES spaceplane.