Flight Sequence Program - Revision history

Indy91: LOX NPV Vent

2025-04-17T15:50:48Z

LOX NPV Vent

@@ Line 93: / Line 93: @@
 |-
 |LH2 Tank Continuous Vent Valve Close Off||2.0||3 (S-IVB)||87||
 |}

Indy91 at 20:25, 16 April 2025

2025-04-16T20:25:40Z

← Older revision		Revision as of 20:25, 16 April 2025
Line 77:		Line 77:
	\|-		\|-
	\|LH2 Tank Continuous Vent Relief Override Shutoff Valve Open On\|\|0.1\|\|3 (S-IVB)\|\|107\|\|		\|LH2 Tank Continuous Vent Relief Override Shutoff Valve Open On\|\|0.1\|\|3 (S-IVB)\|\|107\|\|
			\|-
			\|LH2 Tank Continuous Vent Orifice Shutoff Valve Open Off\|\|2.0\|\|3 (S-IVB)\|\|112\|\|
			\|-
			\|LH2 Tank Continuous Vent Relief Override Shutoff Valve Open Off\|\|2.1\|\|3 (S-IVB)\|\|108\|\|
	\|}		\|}

Line 89:		Line 93:
	\|-		\|-
	\|LH2 Tank Continuous Vent Valve Close Off\|\|2.0\|\|3 (S-IVB)\|\|87\|\|		\|LH2 Tank Continuous Vent Valve Close Off\|\|2.0\|\|3 (S-IVB)\|\|87\|\|
	\|-
	~~\|LH2 Tank Vent and Latching Relief Valves Boost Close On\|\|3.2\|\|3 (S-IVB)\|\|77\|\|~~
	\|-
	~~\|LH2 Tank Vent and Latching Relief Valves Boost Close Off\|\|5.2\|\|3 (S-IVB)\|\|78\|\|~~
	\|}		\|}

Indy91: Saturn V S-IVB continuous vent system procedures

2025-04-16T19:45:00Z

Saturn V S-IVB continuous vent system procedures

@@ Line 62: / Line 62: @@
 |LH2 Tank Vent Valve Close||-3.0||3 (S-IVB)||76||
 |-
-|LH2 Tank Ven Valve Boost Close On||0.0||3 (S-IVB)||77||
+|LH2 Tank Vent Valve Boost Close On||0.0||3 (S-IVB)||77||
 |-
 |LH2 Tank Vent Valve Boost Close Off||2.0||3 (S-IVB)||78||
 |}

Indy91 at 20:23, 5 February 2025

2025-02-05T20:23:42Z

← Older revision		Revision as of 20:23, 5 February 2025
Line 40:		Line 40:
	\|Engine He Control Valve Open Off\|\|0.0\|\|3 (S-IVB)\|\|110\|\|		\|Engine He Control Valve Open Off\|\|0.0\|\|3 (S-IVB)\|\|110\|\|
	\|-		\|-
	\|-Aux Hydraulic Pump Flight Mode Off\|\|2.0\|\|3 (S-IVB)\|\|29\|\|		\|Aux Hydraulic Pump Flight Mode Off\|\|2.0\|\|3 (S-IVB)\|\|29\|\|
	\|}		\|}

Indy91 at 20:22, 5 February 2025

2025-02-05T20:22:38Z

← Older revision		Revision as of 20:22, 5 February 2025
Line 16:		Line 16:

	{\|class="wikitable"		{\|class="wikitable"
	!Event\|\|Time from Event\|\|Stage\|\|Channel		!Event\|\|Time from Event\|\|Stage\|\|Channel\|\|Remarks
	\|-		\|-
	\|~~Engine Mainstage Control Valve Open~~ On\|\|-0.2\|\|3 (S-IVB)\|\|30		\|Aux Hydraulic Pump Flight Mode On\|\|-22.0\|\|3 (S-IVB)\|\|28\|\|The auxiliary hydraulic pump is turned on to center the J-2 engine for damping
	\|-		\|-
	\|Engine He Control Valve Open\|\|0.0\|\|3 (S-IVB)\|\|~~109~~		\|Engine Mainstage Control Valve Open On\|\|-0.2\|\|3 (S-IVB)\|\|30\|\|Commands open main LOX valve
	\|-		\|-
			\|Engine He Control Valve Open\|\|0.0\|\|3 (S-IVB)\|\|109\|\|Provides pneumatics to open main LOX valve
			\|-
			\|LOX Tank NPV Valve Open On\|\|10.0\|\|3 (S-IVB)\|\|42\|\|The LOX NPV valve is latched open, if it is desired to do so
			\|-
			\|LOX Tank NPV Valve Open Off\|\|12.0\|\|3 (S-IVB)\|\|37\|\|Only if opened in the previous step
	\|}		\|}

Line 29:		Line 34:

	{\|class="wikitable"		{\|class="wikitable"
	!Event\|\|Time from Event\|\|Stage\|\|Channel		!Event\|\|Time from Event\|\|Stage\|\|Channel\|\|Remarks
	\|-		\|-
	\|Engine Mainstage Control Valve Open Off\|\|-1.0\|\|3 (S-IVB)\|\|65		\|Engine Mainstage Control Valve Open Off\|\|-1.0\|\|3 (S-IVB)\|\|65\|\|
	\|-		\|-
	\|Engine He Control Valve Open Off\|\|0.0\|\|3 (S-IVB)\|\|110		\|Engine He Control Valve Open Off\|\|0.0\|\|3 (S-IVB)\|\|110\|\|
	\|-		\|-
			\|-Aux Hydraulic Pump Flight Mode Off\|\|2.0\|\|3 (S-IVB)\|\|29\|\|
	\|}		\|}

Line 42:		Line 48:

	{\|class="wikitable"		{\|class="wikitable"
	!Event\|\|Time from Event\|\|Stage\|\|Channel		!Event\|\|Time from Event\|\|Stage\|\|Channel\|\|Remarks
	\|-
	\|~~LH2 Tank Vent Valve Open\|\|0.0\|\|3 (S-IVB)\|\|38~~
	\|-		\|-
			\|LH2 Tank Vent Valve Open\|\|0.0\|\|3 (S-IVB)\|\|38\|\|
	\|}		\|}

Line 53:		Line 58:

	{\|class="wikitable"		{\|class="wikitable"
	!Event\|\|Time from Event\|\|Stage\|\|Channel		!Event\|\|Time from Event\|\|Stage\|\|Channel\|\|Remarks
	\|-
	\|~~LH2 Tank Vent Valve Close\|\|-3.0\|\|3 (S-IVB)\|\|76~~
	\|-		\|-
	\|LH2 Tank ~~Ven~~ Valve ~~Boost~~ Close On\|\|0.0\|\|3 (S-IVB)\|\|77		\|LH2 Tank Vent Valve Close\|\|-3.0\|\|3 (S-IVB)\|\|76\|\|
	\|-		\|-
	\|LH2 Tank ~~Vent~~ Valve Boost Close ~~Off~~\|\|2.0\|\|3 (S-IVB)\|\|78		\|LH2 Tank Ven Valve Boost Close On\|\|0.0\|\|3 (S-IVB)\|\|77\|\|
	\|-		\|-
			\|LH2 Tank Vent Valve Boost Close Off\|\|2.0\|\|3 (S-IVB)\|\|78\|\|
	\|}		\|}

Indy91: Add more sequences

2025-02-05T19:59:50Z

Add more sequences

@@ Line 21: / Line 21: @@
 |-
 |Engine He Control Valve Open||0.0||3 (S-IVB)||109
 |-
 |}

Indy91: Initial page

2025-02-05T19:56:56Z

Initial page

New page

The flight sequence program is a series of scheduled commands that is being sent from the LVDC to the stages of the Saturn vehicle (S-IB/C, S-II, S-IVB and IU) during a mission. They are scheduled in various time bases. In NASSP the LVDC loads a flight sequence program file that is valid for a given mission. The file can be found under Config/Project Apollo.

TBD:

-Explain time bases

-Explain stage code

-List of all available Saturn IB and V commands

==Sequences==

'''Initiate LOX Dump (Saturn IB)'''

Prerequisites: Passivation Enable, Stage 3 (S-IVB), Channel 85

{|class="wikitable"
!Event||Time from Event||Stage||Channel
|-
|Engine Mainstage Control Valve Open On||-0.2||3 (S-IVB)||30
|-
|Engine He Control Valve Open||0.0||3 (S-IVB)||109
|-
|}