diff --git a/init.lua b/init.lua
index 8d66975..7f35367 100644
--- a/init.lua
+++ b/init.lua
@@ -331,9 +331,9 @@ function airutils.getLiftAccel(self, velocity, accel, longit_speed, roll, curr_p
     return retval
 end
 
-function airutils.get_plane_pitch(velocity, longit_speed, min_speed, angle_of_attack)
+function airutils.get_plane_pitch(y_velocity, longit_speed, min_speed, angle_of_attack)
     local v_speed_factor = 0
-    if longit_speed > 0 then v_speed_factor = (velocity.y * math.rad(2)) end --the pitch for climbing or descenting
+    if longit_speed > 0 then v_speed_factor = (y_velocity * math.rad(2)) end --the pitch for climbing or descenting
     local min_rotation_speed = min_speed/2
     local pitch_by_longit_speed = 0
     if longit_speed > min_rotation_speed then --just start the rotation after the rotation speed
diff --git a/lib_planes/custom_physics.lua b/lib_planes/custom_physics.lua
index a394f54..eec787d 100755
--- a/lib_planes/custom_physics.lua
+++ b/lib_planes/custom_physics.lua
@@ -32,7 +32,8 @@ function airutils.physics(self)
         local height = self.height
 		local submergence = math.min(surface-spos.y,height)/height
 --		local balance = self.buoyancy*self.height
-		local buoyacc = airutils.gravity*(self.buoyancy-submergence)
+		--local buoyacc = airutils.gravity*(self.buoyancy-submergence)
+        local buoyacc = airutils.gravity*(self.buoyancy-submergence)
         --local buoyacc = self._baloon_buoyancy*(self.buoyancy-submergence)
         accell = {x=-vel.x*self.water_drag,y=buoyacc-(vel.y*math.abs(vel.y)*0.4),z=-vel.z*self.water_drag}
         if self.buoyancy >= 1 then self._engine_running = false end
@@ -41,7 +42,7 @@ function airutils.physics(self)
         self.object:move_to(self.object:get_pos())
         return
 	else
-        airutils.set_acceleration(self.object,{x=0,y=airutils.gravity,z=0})
+        --airutils.set_acceleration(self.object,{x=0,y=airutils.gravity,z=0})
 		self.isinliquid = false
         --new_velocity = vector.add(new_velocity, {x=0,y=airutils.gravity * self.dtime,z=0})
 	end
diff --git a/lib_planes/entities.lua b/lib_planes/entities.lua
index c253156..0f08c04 100644
--- a/lib_planes/entities.lua
+++ b/lib_planes/entities.lua
@@ -322,14 +322,16 @@ function airutils.logic(self)
     end
 
     --adjust climb indicator
-    local climb_rate = velocity.y
+    local y_velocity = 0
+    if self._engine_running or is_flying then y_velocity = velocity.y end
+    local climb_rate =  y_velocity
     if climb_rate > 5 then climb_rate = 5 end
     if climb_rate < -5 then
         climb_rate = -5
     end
 
     -- pitch
-    local newpitch = airutils.get_plane_pitch(velocity, longit_speed, self._min_speed, self._angle_of_attack)
+    local newpitch = airutils.get_plane_pitch(y_velocity, longit_speed, self._min_speed, self._angle_of_attack)
 
     --for airplanes with cannard or pendulum wing
     local actuator_angle = self._elevator_angle
@@ -499,11 +501,16 @@ function airutils.logic(self)
 	    self.object:move_to(curr_pos)
         --airutils.set_acceleration(self.object, new_accel)
         local limit = (self._max_speed/self.dtime)
-        local vel_to_add = vector.multiply(new_accel,self.dtime)
         if new_accel.y > limit then new_accel.y = limit end --it isn't a rocket :/
-        vel_to_add.y = 0
+
+        if not self.isinliquid then --why? because whe work water movements in the phisics code
+            new_accel.y = new_accel.y + airutils.gravity --gravity here
+        end
+
+        local vel_to_add = vector.multiply(new_accel,self.dtime)
+        --vel_to_add.y = 0
         self.object:add_velocity(vel_to_add)
-        self.object:set_acceleration({x=0,y=new_accel.y, z=0})
+        --self.object:set_acceleration({x=0,y=new_accel.y, z=0})
     else
         if stop == true then
             self._last_accell = self.object:get_acceleration()