(misc_10_8)= # Reliability data for miscellaneous “standard model” {numref}`misc-table_10_8` provides the basic failures rates or basic probability of failure (%) to be considered for miscellaneous “standard models”. The meaning of the columns is explained in {numref}`misc-table_10_7`. ````{admonition} Note 1 : MIS_01 TWTA, Single HPA :class: note The failure rate is provided per TWT Channel (mono channel or dual channel). In order to be used for {term}`LEO`, if adaptation is necessary, it is recommended to use: 1. By default the following proportion (based on average MIL-HDBK-217 {cite:p}`mis-MIL-HDBK-217F` {term}`reliability prediction `) of the whole failure rate. * EPC_common = 36% * EPC_channel = 9% * {term}`CAMP` = 25% * TWT = 30% 2. To use the supplier repartition as per its own reliability prediction. ```` ```{list-table} Structure of the reliability data table :name: misc-table_10_7 :header-rows: 1 :widths: 20 55 25 * - Column - Description - Remark * - REF - Identifies the miscellaneous item - * - EQUIPMENT - Name of the item - * - FR - Depending on the model, either a constant failure rate (fit) or a % standing for an estimate of the proportion of failures: - A figure (integer) means a failure rate in fit, - A proportion (figure followed by %) means a proportion of failure. - Constant failure rate at 60% LoC (Chi-square) **or** Probability of failure at 60% upper-bound one-sided interval * - POINT ESTIMATE - When relevant — observed failure(s) — point estimate of the failure rate or of the proportion of failures % - * - QUALITY - Level of quality used to define the “standard model” - High, Medium, Low * - MATURITY - Indicates the level of maturity, generally based on the first use of the equipment in-orbit - * - TECHNOLOGY - Indicates, when relevant, which technology is concerned - * - COMPLEXITY - Indicates, when relevant, the level of complexity - * - ORBIT - Indicates which orbit is relevant to the “standard model” - LEO, GEO * - T° - Indicates the range of T° when T° should be considered - * - POWER - Indicates the range of Power when Power should be considered - * - CYCLING - Indicates the fact that cycling is a contributor to reliability - * - DUTY CYCLE - The percentage of time during which the item is operated - * - OTHER - Any other parameters or data to be considered - * - DEG - Degradation is to be considered when “YES” - ``` ```{list-table} Reliability data :name: misc-table_10_8 * -

REF	EQUIPEMENT	FR (fit) / %	POINT ESTIM.	QUALITY	MATURITY	TECHNOLOGY	COMPLEXITY	ORBIT	T°	POWER	CYCLING	DUTY CYCLE	OTHER	WO
STD_001	TWTA, Single HPA	200	n/a	HIGH	since 1990	HPA (TWTA)	TWTA complexity	GEO LEO	30° C < T° < 60°C	ALL	30° C < T° < 60°C	ON ON/OFF	All frequencies C, X, Ku, Ka, L	YES
STD_002	TWTA, Dual HPA	400	n/a	HIGH	since 1990	HPA (TWTA)	TWTA complexity	GEO LEO	30° C < T° < 60°C	ALL	30° C < T° < 60°C	ON ON/OFF	All frequencies C, X, Ku, Ka, L	YES
STD_003	BATTERY CELL (GEO)	5	2	HIGH	since 2000	Li-Ion	X S - Y P Z P- A S	GEO	0°C < T°C < 20°C	n/a	n /a	100%	DoD < 70% V < 50v	YES
STD_004	BATTERY CELL (LEO)	1	n/a	HIGH	since 2000	Li-Ion	18560	LEO	0°C < T°C < 20°C	n/a	90mn	100%	DoD < 70% CID, PTC	YES
STD_005	SOLAR ARRAY CELL Si	0,15	n/a	HIGH	since 1990	Si	Triple-Junction	GEO LEO	-100°C < T° <100°C	n/a	n/a	n/a	n/a	YES
STD_006	SOLAR ARRAY CELL GaAs	0,15	n/a	HIGH	since 1991	GaAs	Triple-Junction	GEO LEO	-100°C < T° <100°C	n/a	n/a	n/a	n/a	YES
STD_007	SADM GEO	210	150	HIGH	since 1992	SlipRing	n/a	GEO	-100°C < T° <100°C	some kW	n/a	100%	n/a	YES
STD_008	SADM LEO	213	105	HIGH	since 1992	SlipRing	n/a	LEO	-100°C < T° <100°C	some kW	n/a	100%	n/a	YES
STD_009	THRUSTER	82	71	HIGH	since 1990	Cold gas Hot gas	1N – 10N	GEO LEO	n/a	n/a	ALL	from low to high rate		YES
STD_010	TANK TUBING (SPF)	3,27%	2,4%	HIGH	since 2000	Ti Al	PIPING	GEO LEO	n/a	n/a	n/a	n/a	MEOP up to 200bars	NO
STD_011	RW GEO	250	205	HIGH	since 1990	bearing magnetic	n/a	GEO	-30° C < T° < 80°C	n/a	n/a	100%	REACTION MOMENUM	YES
STD_012	RW LEO	140	112	HIGH	Since 1990	Bearing magnetic	n/a	LEO	-30° C < T° < 80°C	n/a	n/a	100%	REACTION MOMENTUM	YES
STD_013	DEPLOYMENT DEVICE Antenna	0,2%	n/a	HIGH	since 1990	hinge	n/a	GEO LEO	n/a	n/a	n/a	one-shot		no
STD_014	DEPLOYMENT DEVICE Solar Array	0,3%	n/a	HIGH	since 1990	hinge	n/a	GEO LEO	n/a	n/a	n/a	one-shot		no

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