4 Final Report - Emits - ESA
4 Final Report - Emits - ESA
4 Final Report - Emits - ESA
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4 <strong>Final</strong><br />
<strong>Report</strong><br />
4.3.4 PLM budgets<br />
The PLM budgets are computed for the baseline configuration with the following assumptions:<br />
• A 1.5 m diameter instrument with 5 focal planes.<br />
• Dual wing solar arrays, which is less favourable for thermal control efficiency because<br />
radiators on the NS walls have a reduced viewing factor.<br />
• Conventional 2.5 m baffle and Sun avoidance manoeuvres around midnight to keep the LoSto-Sun<br />
angle larger than 30 deg, i.e. preventing that Sun enters the telescope.<br />
• Remote Electronics Modules used for digital processing of the images are implemented in the<br />
SVM and accounted for in the SVM budgets.<br />
The PLM budgets are provided in the following figure:<br />
2930 mm<br />
2340 mm<br />
Mass Power<br />
Best estimate 505 kg 423 W<br />
Margins: 20% 101 kg 85 W<br />
TOTAL with margins 606 kg 508 W<br />
Figure 4.3-15: Geo-Oculus instrument interface budgets<br />
650 mm<br />
Page 4-42 Doc. No: GOC-ASG-RP-002<br />
Issue: 2<br />
Astrium GmbH Date: 13.05.2009
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