Thermal Performance of BIRD Microsatellite Thermal Control System - 3 Years of Operation in Space Institute of Composite Structures and Adaptive Systems, DLR, Braunschweig/Berlin, Germany

Format:

Conference/Event

Author/Creator:

Lura, F., author.

Conference Name:

International Conference On Environmental Systems (2005-07-11 : Rome, Italy)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2005

Summary:

Microsatellite BIRD (Bispectral InfraRed Detection), mass 92 kg, sizes 550610620 mm was put on October 22, 2001 in a sun-synchronous orbit. The passive thermal control system (TCS) provided a temperature range of 10+30 °C for a payload. It is assembled from precision optical instruments and housekeeping equipment with average power about 35 W. In the observation mode a power consumption peak of 200 W is occurred during 10-20 minutesThe TCS ensured a thermal stable design of the payload structure and is realised by heat transfer elements (conductors and grooved heat pipes), which thermally connected the satellite segments, two radiators, multilayer insulation and low-conductive stand-offs.Three years in space have brought an enormous volume of telemetric data about thermal performance of the TCS, based on information from temperature sensors, power consumption, attitude relative to Sun and Earth. The TCS successfully supported the required temperature level of satellite components during the whole period of exploitation. Nevertheless, the authors aimed at analysing the temperature history during these years for the main units of housekeeping equipment such as radiator, payload platform, power supply subsystem, board computer, power supply system, communication and draw conclusions on possible changes in performance. A survey is conducted for the following time scales: payload operation time (10-30 min), one orbit (96 min), shortly after launch and current time

Notes:

Vendor supplied data

Publisher Number:

2005-01-2986

Access Restriction:

Restricted for use by site license