X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=doc%2Faltusmetrum.xsl;fp=doc%2Faltusmetrum.xsl;h=39b3998a5154f35e35fa9042b56222b79340e736;hp=885c573e15b3b684ad5540753405bd467f192d34;hb=0bf1c74e83fe49a11916b52596363f4dd56c522c;hpb=dbb0fcf6d161a9d49fe699c37a18e4c33c409b59

diff --git a/doc/altusmetrum.xsl b/doc/altusmetrum.xsl
index 885c573e..39b3998a 100644
--- a/doc/altusmetrum.xsl
+++ b/doc/altusmetrum.xsl
@@ -2183,6 +2183,20 @@ NAR #88757, TRA #12200
           way quite happily, including Keith's successful L3 cert.
         </para>
       </section>
+      <section>
+	<title>Apogee Lockout</title>
+	<para>
+	  Apogee lockout is the number of seconds after boost where
+	  the flight computer will not fire the apogee charge, even if
+	  the rocket appears to be at apogee. This is often called
+	  'Mach Delay', as it is intended to prevent a flight computer
+	  from unintentionally firing apogee charges due to the pressure
+	  spike that occurrs across a mach transition. Altus Metrum
+	  flight computers include a Kalman filter which is not fooled
+	  by this sharp pressure increase, and so this setting should
+	  be left at the default value of zero to disable it.
+	</para>
+      </section>
       <section>
         <title>Main Deployment Altitude</title>
         <para>