|status reports||21-May-2013 22:18:27|
No. 54 - Successful Perilune Raising Manoeuvres
24 July 2006Report for Period 19 June to 16 July 2006
The main activity during the reporting period has been the perilune raising manoeuvres using the attitude thrusters. The manoeuvres started as planned on 19 June. Due to the spacecraft's good performance, the necessary delta-V to boost SMART-1's orbit was achieved earlier than planned, and the period during which the manoeuvres were carried out ended on 2 July as opposed to the expected end date of 7 July.
In total, the perilune raising manoeuvres required 2404 attitude segments in two weeks (this number usually lies between 180 and 240 per week) and 520 reaction wheel off-loadings were commanded in 65 orbits.
The next step will be the trim manoeuvres lasting about two days in late July to fine tune the impact time between 5:30 and 06:30 UTC on 3 September 2006, allowing optimal observations from ESO, US Kitt-peak and Hawaii.
A Spacecraft Safe Mode occurred on 15 July 2006 at 04:17:04 because the startracker stopped providing valid attitude data for more than 5000 seconds. The spacecraft was fully recovered and payload activities were restarted on the 18 July 2006. The cause of the problem is still under investigation.
The payload activities will continue during the last weeks of the mission with short interruptions for the trim manoeuvres at the end of July and just prior to the impact.
The operations with the SMART-1 Ground Operations Automation System (GOAS) are proceeding as planned with some delays due to problems with the interface of the mission control system. A real time demonstration of GOAS is planned during the second half of July before the end of the mission.
The future activities are focused on:
The spacecraft status is good with all functions working nominally.
Electric Propulsion, Power, Thermal
The changes in four parameters since apolune 2598 are:
Last Update: 06 November 2006For further information please contact: SciTech.email@example.com
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