Airbus Defence and Space Gmbh

Eads Deutschland Gmbh

Saier, Beatrice

Saier, Michael

Joachim Schupp

Michael Kirchner

Michael Saier

Andreas Schuster

Heinz Voggenreiter

Matthias Soellner

Axel Runge

Christian Schlosser

Martin Goetzelmann

Matthias SÖLLNER

Martin GÖTZELMANN

A method and apparatus for detecting an Equivalent Isotropically Radiated Power (EIRP) degradation of a satellite radio frequency (RF) transmitter being in a repeating ground track orbit. Sets of signal-to-noise (C/N) and satellite orbit data are obtained from first and second sources. Each data set is associated with the satellite and one of several receivers. Computing temporal information on an elevational and azimuthal satellite direction for each receiver location. A temporal information based time interval is determined for a single ground track. Determining, for each receiver, one of a first plurality of differences between a first time point data set value and a second time point data set value. The two time points differ by the time interval. A first average of the first plurality of differences is computed and compared with a predetermined threshold. A signal is triggered when the computed first average is larger than the threshold.

Near-real time EIRP monitoring device/system

The present invention relates to an attachment device for a cryogenic satellite tank. In order to achieve adequate rigidity in such an attachment device while reducing the thermal conductivity and at the same time ensuring simple construction which is easy to realize from a technical point of view, so-called shape memory alloy elements are used. Due to suitable arrangement or interaction between a support element ( ) and a connecting component ( ) or a thermally controlled connection arranged in the support element ( ) it is achieved that after the launch of the rocket, the SMA element automatically expands significantly in the cold space environment as a result of phase transformation, thus reducing surface pressure at respective connection points of the attachment device, and partly disengaging the contact. Consequently, the thermal flow via these connection points is reduced or completely eliminated.

Attachment device for a cryogenic satellite tank

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Munich, Germany

Joachim Schupp