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Mnemonic:

MAJ_HEATER_SURVIVAL

Name:

MAJIS in OFF mode but with survival lines enabled

Description:

The FPEs (IR/VISNIR) shall be kept at T > 120K. This function is covered by the Survival Heater lines that are controlled by the S/C.
Two cases can be foreseen: the two heaters are activated and only one is ON (most realistic case based on thermal analysis)

Payload:

MAJIS

Pointing

Pointing Type:

Target:

PTRSnippet file:

Advanced

Scheduling Rules:

n/a

any rule that is used to schedule the observation: repetition rules, continuous (plasma instruments), one-off, every orbit, every day, etc

Avoidance Rules:

n/a

conditions that make the observation not possible (e.g. thruster firing)

Comments:

Source: JUI-IAS-MAJ-TN-104. Update 23/12/2025.

Support Plot 1:

Support Plot 2:

Support Plot 3:

Commanding

ITLSnippet file:

Power profiles

	Event	Time	Power (Watts)	Comment
Start 00:00:00 4.4 [Watt]	Start	00:00:00	4.4	2 heaters activated (realistic case).

Data profiles

	Event	Time	Data flow	Data Rate (bit/s)	Comment

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