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losing both horizontal stabilizer and instantly nose down


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Posted (edited)

im just curious. doesn't losing both of your Horstab especially the 109, would cause the plane to instantly nose up instead of down? the reason for this is because you most likely always put the stabilizer position in a nose heavy position right? so that means the horstab(which is an all flying tail for the 109) will have a negative angle of incidence which creates a big downward moments to counter the nose up tendency, so that you have a level flight. wouldn't losing all of that moment from losing the horstab will cause the plane to go up instead of down? the only way i can think of is that the dev simplified the damage model by, losing horstab = losing tail. 

 

now i understand why losing the tail will cause an instant nose down becuase the CG shift forward away from the Central of preassure which cause an instant nose down. but i dont think losing both horstab will cause a significant amount of CG change to do this(unless the Horstab is very very heavy).

 

P.S im not here to make things change. im just here for discussion cause im curious

Edited by 69th_Ustio
Posted

It isn't that simple. For an aircraft to have positive stability in pitch, the centre of lift has to be behind the centre of gravity. Which implies that the tailplane must be exerting a downward force. The tailplane may be at a positive angle relative to the aircraft datum, but the datum is an arbitrary line, and has no specific relationship to the airflow the tailplane experiences. In particular, if the wing is creating lift, the airflow behind it will be deflected downward, altering the direction of airflow over the tail.

 

 

 

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