TLI checklist (Standard) - Revision history

24.184.26.93 at 19:23, 15 April 2007

2007-04-15T19:23:57Z

← Older revision		Revision as of 19:23, 15 April 2007
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	* The build-in '''TransX MFD''' <BR> One of the best tutorials explaining how to use the TransX MFD for the TLI burn is still the [http://nassp.sf.net/download/OrbiterApollo11Tutorial.pdf NASSP 5.2 tutorial] made by SaturnV, there the "2. Translunar injection" section.		* The build-in '''TransX MFD''' <BR> One of the best tutorials explaining how to use the TransX MFD for the TLI burn is still the [http://nassp.sf.net/download/OrbiterApollo11Tutorial.pdf NASSP 5.2 tutorial] made by SaturnV, there the "2. Translunar injection" section.

	* Jarmo Nikkanen's '''Interplanetary MFD (IMFD) 4.2.1''' <BR> It's available at [http://koti.mbnet.fi/jarmonik/Orbiter.html Jarmo's site]. This is probably the most accurate and pursuable way to calculate the burn, because it has a ~~quite~~ precise trajectory prediction. Thanks to Jarmo there's a very good [http://koti.mbnet.fi/jarmonik/TLI-FreeReturn.zip tutorial] how to setup an Apollo TLI burn and we suggest to use it.		* Jarmo Nikkanen's '''Interplanetary MFD (IMFD) 4.2.1''' <BR> It's available at [http://koti.mbnet.fi/jarmonik/Orbiter.html Jarmo's site]. This is probably the most accurate and pursuable way to calculate the burn, because it has a very precise trajectory prediction. Thanks to Jarmo there's a very good [http://koti.mbnet.fi/jarmonik/TLI-FreeReturn.zip tutorial] how to setup an Apollo TLI burn and we suggest to use it.

	The TLI burn was done in the 2nd orbit after earth orbit insertation, please keep that in mind when setting up the burn. So the time to ejection normally should be roughly about 2h 30min or 9000s, if you do the calculation directly after earth orbit insertation.		The TLI burn was done in the 2nd orbit after earth orbit insertation, please keep that in mind when setting up the burn. So the time to ejection normally should be roughly about 2h 30min or 9000s, if you do the calculation directly after earth orbit insertation.

imported>Tschachim: Removed introduction

2007-02-04T11:36:26Z

Removed introduction

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 The next step on our journey to the moon is the Trans Lunar Injection, also called TLI. With a single burn of the SIVB engine we'll escape the EPO and extend our orbit so that we reach the moon. In real Apollo this burn was calculated by mission control. The burn data were uploaded to the Saturn Instrument Unit (IU) and the Apollo Guidance Computer (AGC). In Project Apollo there is no mission control simulation yet, so we have to do that a different way, by using the Orbiter MFDs.
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              <tr>
                <td width="13%">&nbsp;</td>
-               <td width="87%"><em>Automatic TLI burn sequence </em></td>
+               <td width="87%"><em>Automatic TLI burn sequence <cite>A15_LAUNCH_CHECK</cite></em></td>
              </tr>
            </table>
@@ Line 429: / Line 410: @@
 [[Category:Checklists]]
 __FORCETOC__

imported>Tschachim at 16:19, 20 October 2006

2006-10-20T16:19:14Z

← Older revision		Revision as of 16:19, 20 October 2006
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	#[[References]]		#[[References]]
	</biblio>		</biblio>

			[[Category:Checklists]]

	__FORCETOC__		__FORCETOC__

imported>Tschachim at 12:55, 20 October 2006

2006-10-20T12:55:01Z

Show changes

imported>Tschachim at 11:51, 20 October 2006

2006-10-20T11:51:56Z

New page

When it's possible, the '''original Apollo documentation''' is used for the checklists. Steps, which are not possible at the moment, are denoted in grey. Additionally there are checklists in Word file format in the Doc\Project Apollo - NASSP\Check List directory of your [[installation]]. Procedural steps in this section are presented in tabular form and in sequence they occure during the mission. The following is a detailed explanation of the columnar data presented in the tabulated lists:

[[Image:Apollo_15_launch_checklist.gif|thumb|right|Apollo 15 launch checklist<cite>A15_LAUNCH_CHECK</cite>]]

{| class="wikitable"
|-valign="top"
|'''Time'''
|This column contains the mission time the procedure is to be done. Sometimes there's no fixed time when to do a procedure, in that case the time is left out.
|-valign="top"
|'''Procedure'''
|The procedure is a group of steps or overall tasks involved in performing a complete function or operation. It often consists of controls the astronauts have to toggle or display readings that have to be checked. See [[CSM panels]] for more informations.
|-valign="top"
|'''Panel'''
|The panel number of a particular switch or display for easier panel navigation.
|-valign="top"
|'''Remarks'''
|Any useful comment. Please notice especially differences to the original function, bugs or other issues.
|}

The next step on our journey to the moon is the Trans Lunar Injection, also called TLI. With a single burn of the SIVB engine we'll escape the EPO and extend our orbit so that we reach the moon. In real Apollo this burn was calculated by mission control. The burn data were uploaded to the Saturn Instrument Unit (IU) and the Apollo Guidance Computer (AGC). In Project Apollo there is no mission control simulation yet, so we have to do that a different way, by using the Orbiter MFDs.

== TLI burn calculation ==

At first the burn data have to be calculated. "Burn data" mean the time when the burn will happen and the velocity difference the burn will cause. The exact values you need is the time to ejection in seconds and the delta velocity in m/s. After that the burn data will be entered in the DSKY and then the AGC will do the burn automatically. There are three Orbiter MFDs capable to do the burn data calculation:

* The build-in '''Transfer MFD''' <BR> Use it as explained in the Orbiter user's manual. It's probably the easiest way to do it, but it's also not very accurate.

* The build-in '''TransX MFD''' <BR> One of the best tutorials explaining how to use the TransX MFD for the TLI burn is still the [http://nassp.sf.net/download/OrbiterApollo11Tutorial.pdf NASSP 5.2 tutorial] made by SaturnV, there the "2. Translunar injection" section.

* Jarmo Nikkanen's '''Interplanetary MFD (IMFD) 4.2.1''' <BR> It's available at [http://koti.mbnet.fi/jarmonik/Orbiter.html Jarmo's site]. This is probably the most accurate and pursuable way to calculate the burn, because it has a quite precise trajectory prediction. Thanks to Jarmo there's a very good [http://koti.mbnet.fi/jarmonik/TLI-FreeReturn.zip tutorial] how to setup an Apollo TLI burn and we suggest to use it.

The TLI burn was done in the 2nd orbit after earth orbit insertation, please keep that in mind when setting up the burn. So the time to ejection normally should be roughly about 2h 30min or 9000s, if you do the calculation directly after earth orbit insertation.

== TLI preparation ==

After you managed to see the (decreasing) time to ejection (not the time to burn, the AGC does that by itself) and the delta velocity in on of these MFDs, wait until the time to burn is about 30min or 1800s, then you can continue a little bit more historically correct:

<table width="100%" class="wikitable">
<tr>
<th width="10%" scope="col">Time</th>

<th width="43%" scope="col">Procedure</th>
<th width="5%" scope="col"><div align="center">Panel</div></th>
<th width="42%" scope="col">Remarks</th>
</tr>
<tr>
<td valign="top">about<br>
02:00:00</td>
<td valign="top"><table width="100%" class="wikiembeddedtable">
<tr>
<td><em>TLI preparation </em></td>
</tr>

<tr>
<td> </td>
</tr>
<tr>
<td>cb SECS ARM (2) - close </td>
</tr>
<tr>
<td>SECS LOGIC (both) - on (up) </td>

</tr>
<tr>
<td>SECS PYRO ARM (2) - on (up)</td>
</tr>
<tr>
<td> </td>
</tr>
<tr>

<td width="100%">XLUNAR INJECT - INJECT (verify)</td>
</tr>
<tr>
<td> </td>
</tr>
<tr>
<td>Set Digital Event Timer (DET) to 51:00, stopped </td>
</tr>
</table></td>
<td valign="top"><table width="100%" class="wikiembeddedtable">
<tr>
<td> </td>
</tr>
<tr>

<td> </td>
</tr>
<tr>
<td><div align="center">8</div></td>
</tr>
<tr>
<td> </td>
</tr>

<tr>
<td> </td>
</tr>
<tr>
<td> </td>
</tr>
<tr>
<td><div align="center">2</div></td>

</tr>
<tr>
<td> </td>
</tr>
<tr>
<td><div align="center">1</div></td>
</tr>
</table></td>

<td valign="top"> </td>
</tr>
<tr>
<td valign="top"> </td>
<td valign="top"><table width="100%" class="wikiembeddedtable">
<tr>
<td colspan="2"><em>Start program P15</em></td>
</tr>

<tr>
<td colspan="2"> </td>
</tr>
<tr>
<td colspan="2">Key V37 N15E </td>
</tr>
<tr>
<td width="15%"> </td>

<td width="85%">F 06 33 </td>
</tr>
<tr>
<td colspan="2">V22E </td>
</tr>
<tr>
<td colspan="2">+00020</td>

</tr>
<tr>
<td colspan="2"> </td>
</tr>
<tr>
<td colspan="2">(Wait until time to burn is </td>
</tr>
<tr>

<td colspan="2">exactly 20min or 1200s) </td>
</tr>
<tr>
<td colspan="2">PRO</td>
</tr>
<tr>
<td> </td>
<td>F 06 14 </td>

</tr>
<tr>
<td colspan="2">V21E</td>
</tr>
<tr>
<td colspan="2">Enter delta velocity </td>
</tr>
<tr>

<td colspan="2">in the format +XXXXX</td>
</tr>
<tr>
<td colspan="2">PRO</td>
</tr>
<tr>
<td> </td>
<td>F 06 95 </td>

</tr>
<tr>
<td colspan="2">V16E</td>
</tr>
<tr>
<td> </td>
<td>16 95 </td>
</tr>

<tr>
<td> </td>
<td>R1: Time to burn </td>
</tr>
<tr>
<td> </td>
<td>R2: Delta velocity </td>
</tr>

<tr>
<td> </td>
<td>R3: Velocity at engine cutoff </td>
</tr>
</table></td>
<td valign="top">
<table width="100%" class="wikiembeddedtable">
<tr>

<td> </td>
</tr>
<tr>
<td> </td>
</tr>
<tr>
<td><div align="center">2</div></td>
</tr>

<tr>
<td> </td>
</tr>
</table>
</td>
<td valign="top">
<p>
<br>
<br>
Start P15 "TLI initiate/cutoff ". <br>
<br>
<br>
Set time to burn to 20min<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
For example +03150 for 3150 m/s
<br>
<br>
<br>
<br>
<br>
Monitor burn data
</p></td>
</tr>
</table>

<biblio force=false>
#[[References]]
</biblio>