diff --git a/mission/controller/acs/AcsParameters.h b/mission/controller/acs/AcsParameters.h
index 813851dc..828e4495 100644
--- a/mission/controller/acs/AcsParameters.h
+++ b/mission/controller/acs/AcsParameters.h
@@ -895,9 +895,10 @@ class AcsParameters /*: public HasParametersIF*/ {
   } magnetorquesParameter;
 
   struct DetumbleParameter {
-    uint8_t detumblecounter;
-    double omegaDetumbleStart;
-    double omegaDetumbleEnd;
+    uint8_t detumblecounter = 75;  // 30 s
+    double omegaDetumbleStart = 2 * M_PI / 180;
+    double omegaDetumbleEnd = 0.4 * M_PI / 180;
+    double gainD = pow(10.0, -3.3);
   } detumbleParameter;
 };